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Development history of steel ball
2022-11-28
The steel ball is the most important component of the bearing, and is also the most used rolling element in the bearing industry. The quality of steel ball directly affects the quality of bearing.
Steel ball is an important basic component, especially precision industrial steel ball plays a huge role in the development of national economy. Under some special conditions, steel balls with special materials are often required to complete the functions required under different environments. In fact, some special steel balls have been widely used in various fields of the national economy, including 9Cr18, 3Cr13 stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic balls, etc. Their popularization and application not only promote the development of steel ball production, but also promote the technical development and scientific and technological progress of related industries.
The subsequent processes of steel ball production, namely, automatic cleaning of steel balls, automatic appearance inspection (automatic removal of unqualified products), automatic rust prevention, and counting and packaging, are the key factors affecting the quality of steel balls. Steel ball appearance inspection is an indispensable process in the process of steel ball processing. Steel ball appearance inspection mainly includes surface scratch, rust, surface spot, etc.
Use of steel ball
Steel balls are widely used in electric power, building materials, mining, metallurgy and other fields.
Factors Affecting the Quality of Steel Ball
① Material influence: steel ball, cast iron ball, alloy steel ball, etc. The density of different materials is different, the density of steel is greater than that of cast iron, and the density and content of alloy steel vary according to the density and content of main alloy elements.
② Influence of steel ball manufacturing method: rolled and forged steel balls are dense in structure, so the density is high. Cast steel balls, cast iron balls or cast alloy balls are not very dense in structure, even with pores, so the density is small.
③ Effect of steel ball metallographic structure: the density of martensite, austenite, bainite, ferrite and other different crystal structures is different, which also affects the crystal fineness.
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