In modern industrial production, the surface of many parts is machined to have specific technical performance characteristics, such as: wear resistance, sealing, mating properties, heat transfer, electrical conductivity, and reflection of light and sound waves on the surface of the part. The fluidity and corrosivity of liquids and gases on the wall, the surface properties of thin films, integrated circuit components and artificial organs, the accuracy, reliability, vibration and noise of measuring instruments and machine tools, and the evaluation of these technical properties often depends on The condition of the surface features of the part is closely related to the geometrical features of the surface.
Therefore, the core problem in controlling the quality of the machined surface is its function of use. The surface characteristic parameters that meet the requirements of its use should be specified according to the characteristics of each type of part. It is not difficult to see that for a particular machined surface, we always want to evaluate it with the most (or comparatively) appropriate surface feature parameters in order to achieve the desired functional requirements. At the same time, we hope that the parameters themselves should be stable and reflect the characteristics of the surface essence. It is not affected by the evaluation criteria and the resolution of the instrument, and reduces the parameter indication error caused by the measurement of the random process.
Portable roughness meter, but it is easy to find out from the characteristics and content of standard setting. With the development of modern industry, especially the new surface processing methods and the application of new measuring instruments and measuring methods, many parameters in the standard can not be found. Adapt to the needs of modern production, especially in some special processing situations, such as finishing, the surface of the portable roughness meter with the same Ra value (or similar) can not have the same function. At this time, the Ra value is incapable of evaluating such surface, and the traditional evaluation method pays too much attention to averaging the height information, and almost ignores the horizontal direction attribute, which fails to reflect the comprehensive information of the surface topography.
In recent years, in the field of surface property research, relatively speaking, the research on the surface functional properties of parts is inherently weak because it involves many disciplines and technical fields. The various parts of the machine have different requirements in use, and the functional adaptability of the surface features will be very complicated, which also limits the research on the relationship between the surface topography and its functional properties.
The rapid development of industrial production urgently requires the emergence of more effective and adaptable surface feature evaluation parameters. To solve this contradiction, many scholars in various countries have increased their research efforts in this area, with a view to formulating in the near future. A set of parameters with significant functional characteristics.
On the other hand, in order to prevent "parameter explosion" and also prevent the occurrence of a large number of related parameters, it is necessary to evaluate multiple performance characteristics with one parameter, and accurately describe the essential features of the surface with a small number of parameters. .
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Therefore, the core problem in controlling the quality of the machined surface is its function of use. The surface characteristic parameters that meet the requirements of its use should be specified according to the characteristics of each type of part. It is not difficult to see that for a particular machined surface, we always want to evaluate it with the most (or comparatively) appropriate surface feature parameters in order to achieve the desired functional requirements. At the same time, we hope that the parameters themselves should be stable and reflect the characteristics of the surface essence. It is not affected by the evaluation criteria and the resolution of the instrument, and reduces the parameter indication error caused by the measurement of the random process.
Portable roughness meter, but it is easy to find out from the characteristics and content of standard setting. With the development of modern industry, especially the new surface processing methods and the application of new measuring instruments and measuring methods, many parameters in the standard can not be found. Adapt to the needs of modern production, especially in some special processing situations, such as finishing, the surface of the portable roughness meter with the same Ra value (or similar) can not have the same function. At this time, the Ra value is incapable of evaluating such surface, and the traditional evaluation method pays too much attention to averaging the height information, and almost ignores the horizontal direction attribute, which fails to reflect the comprehensive information of the surface topography.
In recent years, in the field of surface property research, relatively speaking, the research on the surface functional properties of parts is inherently weak because it involves many disciplines and technical fields. The various parts of the machine have different requirements in use, and the functional adaptability of the surface features will be very complicated, which also limits the research on the relationship between the surface topography and its functional properties.
The rapid development of industrial production urgently requires the emergence of more effective and adaptable surface feature evaluation parameters. To solve this contradiction, many scholars in various countries have increased their research efforts in this area, with a view to formulating in the near future. A set of parameters with significant functional characteristics.
On the other hand, in order to prevent "parameter explosion" and also prevent the occurrence of a large number of related parameters, it is necessary to evaluate multiple performance characteristics with one parameter, and accurately describe the essential features of the surface with a small number of parameters. .
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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