2, chrome 13 stainless steel "target=_blank> stainless steel after welding is more hard, easy to crack. If the same type of chrome stainless steel "target=_blank> stainless steel welding rod (G202, G207) welding, must be more than 300 ° C pre- Heat and slow cooling at around 700 °C after welding. If the weldment cannot be post-weld heat treated, the chrome-nickel stainless steel "target=_blank> stainless steel electrode (A107, A207) should be used.
3, chrome 17 stainless steel "target = _blank> stainless steel, in order to improve corrosion resistance and weldability, appropriately increase the amount of stability elements Ti, Nb, Mo, etc., weldability is better than chromium 13 stainless steel "target = _blank> stainless steel. When using the same type of chrome stainless steel "target=_blank> stainless steel electrode (G302, G307), preheating at 200 °C or higher and tempering at 800 °C after welding should be carried out. If the weldment cannot be heat treated, chrome should be used. Nickel stainless steel "target=_blank> stainless steel electrode (A107, A207).
4, chrome-nickel stainless steel "target=_blank> stainless steel electrode has good corrosion resistance and oxidation resistance, widely used in chemical, fertilizer, petroleum, medical machinery manufacturing.
5, chrome-nickel stainless steel "target=_blank> stainless steel welding, repeated heating and precipitation of carbides, reducing corrosion resistance and mechanical properties.
6, chrome-nickel stainless steel "target=_blank> stainless steel coating has titanium calcium type and low hydrogen type. Titanium calcium type can be used for AC and DC, but the AC welding is shallower and easier to redden, so use DC power as much as possible. 4.0 and below diameters can be used for all-position weldments, 5.0 and above for flat and fillet welds.
7. The electrode should be kept dry when it is used. The titanium calcium type should be dried at 150 °C for 1 hour, and the low hydrogen type should be dried at 200-250 °C for 1 hour (do not repeat the drying repeatedly, otherwise the coating is easy to crack and peel off), to prevent the electrode The viscous oil and other dirt are not allowed to cause the weld to increase the carbon content and affect the quality of the weldment.
8. In order to prevent corrosion between the eyes due to heating, the welding current should not be too large, about 20% less than the carbon steel electrode, the arc should not be too long, the layer is fast cold, and the narrow bead is suitable.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Activated Carbon can be used for city drinking water advanced purification, removal of residual chlorine, odor; also advanced purification materials of high pure water, mineral water production process; large-scale boiler feed water to the removal of COD and other harmful impurifies, can improve the efficiency of the boiler and prolong the service life of the boiler; effective remval of COD in water, pigment, odor and other toxic substances. Large Granular Activated Carbon can fill the filter and purify the air.
Activated carbon in this classification can be divided into Activated Carbon For Water Treatment. Activated Carbon For Air Purification. Activated Carbon For Filters. Activated Carbon For Desulfurization.
Activated Carbon
Activated Carbon,Granular Activated Carbon,Powder Activated Carbon,Pellet Activated Carbon
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