At the summit forum in Zhengzhou in April this year, we talked about the application of stone chemical protection in the overall grinding and recrystallization hardening of stone. Due to time and space limitations, I feel a little bit unfinished, so I wrote a essay to readers.
The chemical protection of stone is widely used in the processing of stone, paving construction of stone and so on. The application in the overall grinding and recrystallization hardening of stone has not been widely recognized, and most builders consider it to be dispensable. That is to say, the importance and necessity of stone chemical protection in the overall grinding and recrystallization hardening of stone materials are not fully and sufficiently recognized. In addition, the propaganda of the manufacturers and distributors of stone protective agents is aimed at stone processing and stone paving. Therefore, it has created a certain illusion for the practitioners of stone grinding and recrystallization hardening, which has made many practitioners I mistakenly believe that stone chemical protection is a matter for Party A or stone suppliers and decoration companies, and has nothing to do with themselves. Under the guidance of this erroneous thinking, the surface of the stone after grinding and recrystallization hardening, water spots, yellow spots, efflorescence and other phenomena abound, users are not satisfied, they can not work. In the long run, it will inevitably cause a negative impact on users, and the inevitable result of the overall grinding and recrystallization hardening treatment of stone is the same. Seriously affected the development of the entire industry.
Today we can meet the stone capital - Laizhou to explore the application of stone chemical protection in the overall grinding and recrystallization hardening of stone is a very meaningful thing. From afar, it is for the orderly development of our industry, and from the recent point of view is the practice of peers.
We will explain the application of stone chemical protection in the whole grinding and recrystallization hardening of stone by the following four examples. 1. The overall grinding and recrystallization hardening of terrazzo; 2. The overall grinding and recrystallization hardening of artificial stone; The overall grinding and recrystallization hardening of the travertine that does not repair the hole; 4, the overall grinding and recrystallization hardening treatment of the jazz white, and welcome everyone to the axe.
1. Overall grinding and recrystallization hardening of terrazzo
Generally, the overall grinding of terrazzo is carried out with water grinding. In the past, the recrystallization hardening treatment was no longer carried out. According to the current acceptance criteria of terrazzo, it is understandable that the manufacture of terrazzo is the same. However, as the needs of society continue to increase, the process is constantly improving; after the overall grinding of the terrazzo, recrystallization hardening is the future development direction of the terrazzo process. If the recrystallization hardening treatment is to be carried out, the above-mentioned grinding method has a big problem that a large amount of moisture in the terrazzo whole grinding process is nearly saturated by the terrazzo floor, and the recrystallization hardening treatment of the terrazzo is impossible. Even if the terrazzo floor is dried and then recrystallized and hardened, the gloss, clarity, permeability and wettability of the terrazzo vitrified surface are not very good, and the terrazzo floor will quickly lose its luster. This is because the continuously overflowing water vapor in the terrazzo floor and the CO2, SO2 and NOX in the atmosphere produce weak acids (carbonic acid, nitrous acid and sulfurous acid), and we know that the main component of the terrazzo is carbonate, so it will burn out the terrazzo. The surface of the board caused the blur of the board surface.
In response to the above problems, we have developed the following processes: terrazzo dry grinding (preparation of leather) - brushing stone penetration protection agent - terrazzo water grinding to 3000 mesh - stone penetration protection agent - recrystallization hardening treatment. As a result, the gloss of the terrazzo is 84 gloss units, the definition is good, the permeability is good, the wettability is good, and the visual sense is beautiful. This is because the effect of the stone protectant reduces the water absorption rate of the terrazzo, so that the stone is less affected by water-acid, and the dry stone has higher gloss.
In the process of overall grinding, it should be noted that a terrazzo protection is required for each grinding. In this process, in order to reduce the production cost, a silicone water-based protective agent can be used. The most important thing is that the silicone water-based protective agent can produce a water-repellent silicone resin and a hydrophobic polymethyl silica which have a strong binding force with cement. In this way, the total grinding of the total 5600 square meters of terrazzo, 548 liters of stone penetration protection agent, 1100 liters of silicone waterborne protective agent. Although the cost will increase, the effect and effect are unmatched by the chemical protection of stone.
Another point to emphasize is that the higher the density of the terrazzo in the terrazzo floor, the better the quality of the terrazzo floor, the better the light output effect, the better the overall grinding and recrystallization hardening effect; the terrazzo floor production The better the sizing process is, the better the light-emitting effect is, and the better the overall grinding and re-crystallization hardening effect; for some terrazzo floors that are heavily dusted and sanded, they need to be made due to loose structure and weathering. The terrazzo floor is permeable and hardened or resin-reinforced, and then subjected to integral grinding and recrystallization hardening. Under normal circumstances (unless there are material quality problems or construction quality problems in the manufacturing process), the terrazzo floor does not need to do the infiltration hardening treatment, including the old terrazzo floor. For example, the terrazzo floor that we have done for more than 80 years has not been infiltrated and hardened, and the effect of overall grinding and recrystallization hardening is also very good.
Second, the overall grinding and recrystallization hardening of artificial stone
It is generally believed that the artificial stone is dense and has a low water absorption rate, so it is not necessary to use the chemical protection of the stone during construction. Through practice, we know that artificial stone has low water absorption, but artificial stone stone with low water absorption rate is not non-absorbent, but artificial stone plate absorbs a small amount of water (in fact, most artificial stone is made of unsaturated resin or One of the characteristics of an unsaturated resin or a methyl acrylate resin is that it has a tendency to hydrolyze, and the absorption of water will greatly reduce the unsaturated resin and the methyl acrylate resin itself. The physical and chemical properties, so the artificial stone after water absorption will also reduce the quality). Then, in the overall grinding of artificial stone, because our construction enterprises use the method of step-by-step water grinding with 5-6 abrasives, the water grinding method will cause the accumulation of water, which often makes the water content of artificial stone plates greatly increase. Conducive to the later recrystallization hardening treatment. If it is dried by natural drying, and because of the denseness of artificial stone and the absorption of water by unsaturated resin itself, it will cause deterioration. The moisture should not be converted into water vapor and discharged a lot.
In view of the above situation, we use dry grinding (this should pay attention to the rational use of abrasives, can not ignore the waste of abrasives, and can not cause damage to artificial stone due to excessive temperature) (prepared leather) artificial stone floor board, with dust, suction Dust cleans the artificial stone floor; paints the stone penetration protection agent on the cleaned artificial stone floor; the stone protection agent applied on the artificial stone surface, reaches the health stage and then carries the water step by step; the whole grinding is finished after cleaning Construction site; after the dryness, the stone penetration protection agent is applied again. This time, the stone protective agent is applied on the artificial stone surface after the whole grinding. In addition to the uniform and non-leakage brush, special attention should be paid to: the stone protection agent When drying quickly to form the beads, use the brushing tool to evenly spread the beads. Otherwise, the raindrops will appear after the surface of the artificial stone is dry. This will have the same result for any stone or any stone protectant. In the process of painting stone protective agent, it is necessary to strictly prohibit fireworks and strengthen ventilation. I hope to attract your attention. Remember and remember.
If the stone protectant is not used in the whole grinding and recrystallization hardening process of the artificial stone, the treated artificial stone floor may soon appear black, which brings unnecessary trouble to the later maintenance and maintenance. I hope to draw the attention of my colleagues.
3. Overall grinding and recrystallization hardening of travertine without repairing holes
Travertine, scientific name travertine English name: Travertine is a porous rock. Travertine, a marine sedimentary sedimentary rock, is a deposit of calcium carbonate. Most of the travertine is formed on the limestone-rich limestone topography. Porosity sometimes occurs during heavy accumulation. At the same time, because its main component is calcium carbonate, it is easily dissolved and corroded by water, so these heavy deposits will appear. Many natural irregular holes, dissolved in water, calcium carbonate and other minerals deposited in riverbeds, lakes and other places to form travertine.
The overall grinding and recrystallization hardening of travertine is generally carried out by a procedure such as dry grinding, pickling cleaning, filling of holes, overall grinding with water, application of stone protectant, and recrystallization hardening. It should be said that experienced and professional stone care companies will basically operate. But today we are talking about the overall grinding and recrystallization hardening of the travertine that does not repair the holes.
The hole of the travertine has a large water absorption rate of about 0.55-0.850/0. Therefore, if the hole is not filled, the overall polishing will bring unexpected trouble to the subsequent process, and the recrystallization hardening process cannot be applied. To this end, we first use 50# stone refurbished pieces to dry the stone, grind the oxide layer, aging layer and protective layer on the surface of the travertine stone, apply the stone penetration protection agent, open the seam and make up the seam, and use 50#, 150# in turn. 300#, 500#, 1000#, 2000#, 3000# With water grinding travertine ground, it is necessary to draw attention to the number of stone renovation tablets per liter, and apply a silicone water-based protective agent to prevent our overall The water during the grinding process enters the crevices and holes in the travertine. After the final 3000# grinding is completed, the ground travertine floor is dried and the stone penetration protection agent is applied. It laid a good foundation for recrystallization hardening treatment in the next process.
On the entire 472-square-meter travertine floor, we used a total of 24 liters of stone penetration protectant and used 64 liters of silicone water-based protective agent. Since we use a large amount of stone repellent, it has well prevented the intrusion of water and water vapor in the whole grinding process of the stone to the whole grinding travertine floor. Therefore, we carried out recrystallization hardening on the second day after the whole grinding. And achieved a very satisfactory construction effect.
Fourth, the overall grinding and recrystallization hardening of jazz white
Jazz white marble has a water absorption rate of about 0.140/0 and a porosity of about 0.54 0/0. The surface of the board is silver-gray and cloud-like. If water and antifouling are not noticed in the overall grinding and recrystallization hardening treatment, water spots, efflorescence, and contamination are likely to occur. Jazz white ground is also prone to oil stains during slitting and caulking operations. The most important thing is that the metal oxides such as iron and manganese contained in white marble are very obvious in the water environment. They are generally reddish yellow. If they are produced on the surface, they can also be removed by grinding. If they are produced in the gap. It cannot be removed between crystals, and these oxidized pigments cannot be reduced in the marble of an alkaline system. Therefore, when such a stone is subjected to integral grinding and recrystallization hardening, the chemical protection of the stone is more important.
Therefore, the process we adopt is: dry grinding - cleaning the working surface - brushing the stone penetration protection agent - slitting, caulking - overall grinding, each step using a silicone water-based protective agent to paint the jazz white stone working face as a whole After the grinding is completed, the stone fluorination penetrant is applied for the second day to perform recrystallization hardening treatment. During the recrystallization hardening process, it should be noted that the ordinary steel wool can be used after two times of recrystallization hardening treatment with animal hair brush (3500), white brush (4100) or gray brush (4000). deal with. For any other light-colored stone, it can be constructed in this way, and there is no worries. After the construction of this method, the ground gloss is 85, the definition is good, the wettability is excellent, the permeability is good, and the visual sense is pleasing.
In the overall grinding process of Jazz White Stone, we took a responsible attitude and consciously used several different brands of domestic and foreign stone repellents, and made a comparison of the whole sample of stone grinding and recrystallization hardening. Finally, after comparison, we decided to use CHJ stone penetration protection agent, CHJ stone silicon oxygen waterborne protective agent, CHJ stone fluoride penetration protection agent to carry out the overall grinding and recrystallization hardening treatment of the ground stone.
Four examples are given above to describe the application of chemical protection of stone in the overall grinding and recrystallization hardening of stone. Two of them are natural stone and two are artificial stone, which is what we are conscious of. The purpose is to make everyone realize that the chemical protection of stone (natural stone, artificial stone) is not dispensable in the overall grinding and recrystallization hardening of stone, but it is an indispensable link and step.
From the above four examples, we can easily see that in the actual operation, the process design and process of stone chemical protection, the operation mode and operation method of stone chemical protection are almost the same in actual engineering construction. It is as simple as adding only one process, so the practical operation of stone chemical protection is extremely feasible. It is precisely this increase in the extremely inconspicuous process that can fundamentally change the results of the overall grinding and recrystallization hardening of the stone.
It should be emphasized here that the water absorption rate of stone cannot be used as a standard for stone protection. For example, the water absorption rate of silver wire beige is 1.88%, the water absorption rate of American white linen is 0.19%, then the silver wire beige stone needs to be stone protection and the American white stone can not be used for stone protection. In fact, we know in practice that these two kinds of stone must be used for stone protection in the overall grinding and recrystallization hardening of stone. Because the chemical protection of stone is not only related to the water absorption rate of the stone, but more importantly, it is related to the structure and characteristics of the pores and pores of the stone. The pores of the stone have open pores and closed pores, but once polished, the closed pores of the stone pores may become open pores of the stone voids. In addition, the pores of stone can be divided into three types: micropores (the radius of the pores is less than 10-7M), large pores (the radius of the pores are between 10-7M and 10-4M), and pores (the radius of the pores is greater than 10- 4M), micropores and pores will not produce capillary phenomenon, only large pores, also known as capillary pores will produce capillary phenomenon will transfer the moisture in our stone grinding to the inside of the stone, and cause stone lesions, so in order to prevent stone The appearance of these capillary phenomena must be added to the chemical protection of the stone in the overall grinding of the stone and in the recrystallization hardening treatment to prevent the appearance of the capillary phenomenon of the stone and prevent the stone lesions after the whole grinding of the stone. Also, the amount of water absorbed by the stone is proportional to the square root of time, etc. We will not discuss this issue further. If you are interested, you can look for the theory of building materials.
Finally, it is necessary to summarize the steps, procedures and details of the application of stone chemical protection in the overall grinding and recrystallization hardening of stone materials as follows:
1. Use the formula to design a stone refurbished piece of 6000 rpm to dry the stone floor, or dry the stone floor with dry grinding (except for solid surface materials and ceramic tiles).
2. Clean the stone floor after dry grinding with dust and vacuum. Do not wash with water.
3. Apply a solvent-based stone protectant that can be superimposed and highly permeable. Such as CHJ stone penetration protection agent. When applying solvent-based protective agents, be sure to do fire and ventilation.
4, slitting, caulking.
5. Choose the stone grinding machine that suits you and the abrasive tools and abrasives that are suitable for the stone grinding machine to carry out the overall grinding of the stone.
6. In the whole grinding, the stone with chemical resistance is small, the water absorption rate is high, the porosity is large, the color is light, and the existing lesions and treated lesions must be added with chemical protection. The purpose is to prevent water and pollutants from causing the stone. Secondary pollution and the rebound of stone lesions. In the whole grinding, it is necessary to consciously control the amount of water used for grinding. It is necessary to insist on water absorption while grinding, so that the ground water does not remain on the surface of the stone for a long time and is absorbed by the stone.
7. After the end of the overall grinding, the stone penetration protection agent or the stone fluorination protection agent should be made according to the future use of the stone floor. Be sure to pay attention when doing stone protection: to prevent the occurrence of raindrops.
8. In the recrystallization hardening treatment, it is preferable to carry out the recrystallization hardening treatment with ordinary steel wool after two times of recrystallization hardening treatment with a beast brush, a white brush or a gray brush. This ensures that ordinary steel wool does not pollute the stone surface. Pay attention to distinguish between low-speed brush and high-speed brush when choosing a brush. For example, 3M's 3500 animal brush is a low-speed, high-speed universal brush, its speed design is 175-3000 rev / min; 3M 3200 animal brush is a high-speed brush, its speed design is 1500-3000 rev / Minutes, while the 3M 4000 gray brush is a low-speed brush, and its speed is designed to be 175 rpm.
9. For the stone floor with large environmental humidity and poor ventilation conditions, the method of polishing the solvent-type stone protective agent can be used to prevent the occurrence of the phenomenon of the soil pan-alkali. If you use CHJ stone penetration protection agent, spray it with steel wire like stone recrystallization hardening, you will receive unexpected results.
The chemical protection of stone is widely used in the processing of stone, paving construction of stone and so on. The application in the overall grinding and recrystallization hardening of stone has not been widely recognized, and most builders consider it to be dispensable. That is to say, the importance and necessity of stone chemical protection in the overall grinding and recrystallization hardening of stone materials are not fully and sufficiently recognized. In addition, the propaganda of the manufacturers and distributors of stone protective agents is aimed at stone processing and stone paving. Therefore, it has created a certain illusion for the practitioners of stone grinding and recrystallization hardening, which has made many practitioners I mistakenly believe that stone chemical protection is a matter for Party A or stone suppliers and decoration companies, and has nothing to do with themselves. Under the guidance of this erroneous thinking, the surface of the stone after grinding and recrystallization hardening, water spots, yellow spots, efflorescence and other phenomena abound, users are not satisfied, they can not work. In the long run, it will inevitably cause a negative impact on users, and the inevitable result of the overall grinding and recrystallization hardening treatment of stone is the same. Seriously affected the development of the entire industry.
Today we can meet the stone capital - Laizhou to explore the application of stone chemical protection in the overall grinding and recrystallization hardening of stone is a very meaningful thing. From afar, it is for the orderly development of our industry, and from the recent point of view is the practice of peers.
We will explain the application of stone chemical protection in the whole grinding and recrystallization hardening of stone by the following four examples. 1. The overall grinding and recrystallization hardening of terrazzo; 2. The overall grinding and recrystallization hardening of artificial stone; The overall grinding and recrystallization hardening of the travertine that does not repair the hole; 4, the overall grinding and recrystallization hardening treatment of the jazz white, and welcome everyone to the axe.
1. Overall grinding and recrystallization hardening of terrazzo
Generally, the overall grinding of terrazzo is carried out with water grinding. In the past, the recrystallization hardening treatment was no longer carried out. According to the current acceptance criteria of terrazzo, it is understandable that the manufacture of terrazzo is the same. However, as the needs of society continue to increase, the process is constantly improving; after the overall grinding of the terrazzo, recrystallization hardening is the future development direction of the terrazzo process. If the recrystallization hardening treatment is to be carried out, the above-mentioned grinding method has a big problem that a large amount of moisture in the terrazzo whole grinding process is nearly saturated by the terrazzo floor, and the recrystallization hardening treatment of the terrazzo is impossible. Even if the terrazzo floor is dried and then recrystallized and hardened, the gloss, clarity, permeability and wettability of the terrazzo vitrified surface are not very good, and the terrazzo floor will quickly lose its luster. This is because the continuously overflowing water vapor in the terrazzo floor and the CO2, SO2 and NOX in the atmosphere produce weak acids (carbonic acid, nitrous acid and sulfurous acid), and we know that the main component of the terrazzo is carbonate, so it will burn out the terrazzo. The surface of the board caused the blur of the board surface.
In response to the above problems, we have developed the following processes: terrazzo dry grinding (preparation of leather) - brushing stone penetration protection agent - terrazzo water grinding to 3000 mesh - stone penetration protection agent - recrystallization hardening treatment. As a result, the gloss of the terrazzo is 84 gloss units, the definition is good, the permeability is good, the wettability is good, and the visual sense is beautiful. This is because the effect of the stone protectant reduces the water absorption rate of the terrazzo, so that the stone is less affected by water-acid, and the dry stone has higher gloss.
In the process of overall grinding, it should be noted that a terrazzo protection is required for each grinding. In this process, in order to reduce the production cost, a silicone water-based protective agent can be used. The most important thing is that the silicone water-based protective agent can produce a water-repellent silicone resin and a hydrophobic polymethyl silica which have a strong binding force with cement. In this way, the total grinding of the total 5600 square meters of terrazzo, 548 liters of stone penetration protection agent, 1100 liters of silicone waterborne protective agent. Although the cost will increase, the effect and effect are unmatched by the chemical protection of stone.
Another point to emphasize is that the higher the density of the terrazzo in the terrazzo floor, the better the quality of the terrazzo floor, the better the light output effect, the better the overall grinding and recrystallization hardening effect; the terrazzo floor production The better the sizing process is, the better the light-emitting effect is, and the better the overall grinding and re-crystallization hardening effect; for some terrazzo floors that are heavily dusted and sanded, they need to be made due to loose structure and weathering. The terrazzo floor is permeable and hardened or resin-reinforced, and then subjected to integral grinding and recrystallization hardening. Under normal circumstances (unless there are material quality problems or construction quality problems in the manufacturing process), the terrazzo floor does not need to do the infiltration hardening treatment, including the old terrazzo floor. For example, the terrazzo floor that we have done for more than 80 years has not been infiltrated and hardened, and the effect of overall grinding and recrystallization hardening is also very good.
Second, the overall grinding and recrystallization hardening of artificial stone
It is generally believed that the artificial stone is dense and has a low water absorption rate, so it is not necessary to use the chemical protection of the stone during construction. Through practice, we know that artificial stone has low water absorption, but artificial stone stone with low water absorption rate is not non-absorbent, but artificial stone plate absorbs a small amount of water (in fact, most artificial stone is made of unsaturated resin or One of the characteristics of an unsaturated resin or a methyl acrylate resin is that it has a tendency to hydrolyze, and the absorption of water will greatly reduce the unsaturated resin and the methyl acrylate resin itself. The physical and chemical properties, so the artificial stone after water absorption will also reduce the quality). Then, in the overall grinding of artificial stone, because our construction enterprises use the method of step-by-step water grinding with 5-6 abrasives, the water grinding method will cause the accumulation of water, which often makes the water content of artificial stone plates greatly increase. Conducive to the later recrystallization hardening treatment. If it is dried by natural drying, and because of the denseness of artificial stone and the absorption of water by unsaturated resin itself, it will cause deterioration. The moisture should not be converted into water vapor and discharged a lot.
In view of the above situation, we use dry grinding (this should pay attention to the rational use of abrasives, can not ignore the waste of abrasives, and can not cause damage to artificial stone due to excessive temperature) (prepared leather) artificial stone floor board, with dust, suction Dust cleans the artificial stone floor; paints the stone penetration protection agent on the cleaned artificial stone floor; the stone protection agent applied on the artificial stone surface, reaches the health stage and then carries the water step by step; the whole grinding is finished after cleaning Construction site; after the dryness, the stone penetration protection agent is applied again. This time, the stone protective agent is applied on the artificial stone surface after the whole grinding. In addition to the uniform and non-leakage brush, special attention should be paid to: the stone protection agent When drying quickly to form the beads, use the brushing tool to evenly spread the beads. Otherwise, the raindrops will appear after the surface of the artificial stone is dry. This will have the same result for any stone or any stone protectant. In the process of painting stone protective agent, it is necessary to strictly prohibit fireworks and strengthen ventilation. I hope to attract your attention. Remember and remember.
If the stone protectant is not used in the whole grinding and recrystallization hardening process of the artificial stone, the treated artificial stone floor may soon appear black, which brings unnecessary trouble to the later maintenance and maintenance. I hope to draw the attention of my colleagues.
3. Overall grinding and recrystallization hardening of travertine without repairing holes
Travertine, scientific name travertine English name: Travertine is a porous rock. Travertine, a marine sedimentary sedimentary rock, is a deposit of calcium carbonate. Most of the travertine is formed on the limestone-rich limestone topography. Porosity sometimes occurs during heavy accumulation. At the same time, because its main component is calcium carbonate, it is easily dissolved and corroded by water, so these heavy deposits will appear. Many natural irregular holes, dissolved in water, calcium carbonate and other minerals deposited in riverbeds, lakes and other places to form travertine.
The overall grinding and recrystallization hardening of travertine is generally carried out by a procedure such as dry grinding, pickling cleaning, filling of holes, overall grinding with water, application of stone protectant, and recrystallization hardening. It should be said that experienced and professional stone care companies will basically operate. But today we are talking about the overall grinding and recrystallization hardening of the travertine that does not repair the holes.
The hole of the travertine has a large water absorption rate of about 0.55-0.850/0. Therefore, if the hole is not filled, the overall polishing will bring unexpected trouble to the subsequent process, and the recrystallization hardening process cannot be applied. To this end, we first use 50# stone refurbished pieces to dry the stone, grind the oxide layer, aging layer and protective layer on the surface of the travertine stone, apply the stone penetration protection agent, open the seam and make up the seam, and use 50#, 150# in turn. 300#, 500#, 1000#, 2000#, 3000# With water grinding travertine ground, it is necessary to draw attention to the number of stone renovation tablets per liter, and apply a silicone water-based protective agent to prevent our overall The water during the grinding process enters the crevices and holes in the travertine. After the final 3000# grinding is completed, the ground travertine floor is dried and the stone penetration protection agent is applied. It laid a good foundation for recrystallization hardening treatment in the next process.
On the entire 472-square-meter travertine floor, we used a total of 24 liters of stone penetration protectant and used 64 liters of silicone water-based protective agent. Since we use a large amount of stone repellent, it has well prevented the intrusion of water and water vapor in the whole grinding process of the stone to the whole grinding travertine floor. Therefore, we carried out recrystallization hardening on the second day after the whole grinding. And achieved a very satisfactory construction effect.
Fourth, the overall grinding and recrystallization hardening of jazz white
Jazz white marble has a water absorption rate of about 0.140/0 and a porosity of about 0.54 0/0. The surface of the board is silver-gray and cloud-like. If water and antifouling are not noticed in the overall grinding and recrystallization hardening treatment, water spots, efflorescence, and contamination are likely to occur. Jazz white ground is also prone to oil stains during slitting and caulking operations. The most important thing is that the metal oxides such as iron and manganese contained in white marble are very obvious in the water environment. They are generally reddish yellow. If they are produced on the surface, they can also be removed by grinding. If they are produced in the gap. It cannot be removed between crystals, and these oxidized pigments cannot be reduced in the marble of an alkaline system. Therefore, when such a stone is subjected to integral grinding and recrystallization hardening, the chemical protection of the stone is more important.
Therefore, the process we adopt is: dry grinding - cleaning the working surface - brushing the stone penetration protection agent - slitting, caulking - overall grinding, each step using a silicone water-based protective agent to paint the jazz white stone working face as a whole After the grinding is completed, the stone fluorination penetrant is applied for the second day to perform recrystallization hardening treatment. During the recrystallization hardening process, it should be noted that the ordinary steel wool can be used after two times of recrystallization hardening treatment with animal hair brush (3500), white brush (4100) or gray brush (4000). deal with. For any other light-colored stone, it can be constructed in this way, and there is no worries. After the construction of this method, the ground gloss is 85, the definition is good, the wettability is excellent, the permeability is good, and the visual sense is pleasing.
In the overall grinding process of Jazz White Stone, we took a responsible attitude and consciously used several different brands of domestic and foreign stone repellents, and made a comparison of the whole sample of stone grinding and recrystallization hardening. Finally, after comparison, we decided to use CHJ stone penetration protection agent, CHJ stone silicon oxygen waterborne protective agent, CHJ stone fluoride penetration protection agent to carry out the overall grinding and recrystallization hardening treatment of the ground stone.
Four examples are given above to describe the application of chemical protection of stone in the overall grinding and recrystallization hardening of stone. Two of them are natural stone and two are artificial stone, which is what we are conscious of. The purpose is to make everyone realize that the chemical protection of stone (natural stone, artificial stone) is not dispensable in the overall grinding and recrystallization hardening of stone, but it is an indispensable link and step.
From the above four examples, we can easily see that in the actual operation, the process design and process of stone chemical protection, the operation mode and operation method of stone chemical protection are almost the same in actual engineering construction. It is as simple as adding only one process, so the practical operation of stone chemical protection is extremely feasible. It is precisely this increase in the extremely inconspicuous process that can fundamentally change the results of the overall grinding and recrystallization hardening of the stone.
It should be emphasized here that the water absorption rate of stone cannot be used as a standard for stone protection. For example, the water absorption rate of silver wire beige is 1.88%, the water absorption rate of American white linen is 0.19%, then the silver wire beige stone needs to be stone protection and the American white stone can not be used for stone protection. In fact, we know in practice that these two kinds of stone must be used for stone protection in the overall grinding and recrystallization hardening of stone. Because the chemical protection of stone is not only related to the water absorption rate of the stone, but more importantly, it is related to the structure and characteristics of the pores and pores of the stone. The pores of the stone have open pores and closed pores, but once polished, the closed pores of the stone pores may become open pores of the stone voids. In addition, the pores of stone can be divided into three types: micropores (the radius of the pores is less than 10-7M), large pores (the radius of the pores are between 10-7M and 10-4M), and pores (the radius of the pores is greater than 10- 4M), micropores and pores will not produce capillary phenomenon, only large pores, also known as capillary pores will produce capillary phenomenon will transfer the moisture in our stone grinding to the inside of the stone, and cause stone lesions, so in order to prevent stone The appearance of these capillary phenomena must be added to the chemical protection of the stone in the overall grinding of the stone and in the recrystallization hardening treatment to prevent the appearance of the capillary phenomenon of the stone and prevent the stone lesions after the whole grinding of the stone. Also, the amount of water absorbed by the stone is proportional to the square root of time, etc. We will not discuss this issue further. If you are interested, you can look for the theory of building materials.
Finally, it is necessary to summarize the steps, procedures and details of the application of stone chemical protection in the overall grinding and recrystallization hardening of stone materials as follows:
1. Use the formula to design a stone refurbished piece of 6000 rpm to dry the stone floor, or dry the stone floor with dry grinding (except for solid surface materials and ceramic tiles).
2. Clean the stone floor after dry grinding with dust and vacuum. Do not wash with water.
3. Apply a solvent-based stone protectant that can be superimposed and highly permeable. Such as CHJ stone penetration protection agent. When applying solvent-based protective agents, be sure to do fire and ventilation.
4, slitting, caulking.
5. Choose the stone grinding machine that suits you and the abrasive tools and abrasives that are suitable for the stone grinding machine to carry out the overall grinding of the stone.
6. In the whole grinding, the stone with chemical resistance is small, the water absorption rate is high, the porosity is large, the color is light, and the existing lesions and treated lesions must be added with chemical protection. The purpose is to prevent water and pollutants from causing the stone. Secondary pollution and the rebound of stone lesions. In the whole grinding, it is necessary to consciously control the amount of water used for grinding. It is necessary to insist on water absorption while grinding, so that the ground water does not remain on the surface of the stone for a long time and is absorbed by the stone.
7. After the end of the overall grinding, the stone penetration protection agent or the stone fluorination protection agent should be made according to the future use of the stone floor. Be sure to pay attention when doing stone protection: to prevent the occurrence of raindrops.
8. In the recrystallization hardening treatment, it is preferable to carry out the recrystallization hardening treatment with ordinary steel wool after two times of recrystallization hardening treatment with a beast brush, a white brush or a gray brush. This ensures that ordinary steel wool does not pollute the stone surface. Pay attention to distinguish between low-speed brush and high-speed brush when choosing a brush. For example, 3M's 3500 animal brush is a low-speed, high-speed universal brush, its speed design is 175-3000 rev / min; 3M 3200 animal brush is a high-speed brush, its speed design is 1500-3000 rev / Minutes, while the 3M 4000 gray brush is a low-speed brush, and its speed is designed to be 175 rpm.
9. For the stone floor with large environmental humidity and poor ventilation conditions, the method of polishing the solvent-type stone protective agent can be used to prevent the occurrence of the phenomenon of the soil pan-alkali. If you use CHJ stone penetration protection agent, spray it with steel wire like stone recrystallization hardening, you will receive unexpected results.
We diviided the led light according to the using eviiroment. Most of our product is the commercial LED Lighting
Commercial lighting is a term used to describe lighting that is used in commercial spaces, including auto dealerships, distribution centers, churches, factories, offices, and warehouses. Unlike residential lighting, commercial lighting is made to withstand more abuse and has a longer lifespan.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
Cylinder Track Light,Indoor Track Light,Recessed Track Lighting,Industrial Track Lighting
Jiangmen Dilin Lighting High-Tech Co., Ltd. , https://www.jmdilinled.com