There are many types of steel balls on the market, and steel balls are very important parts. There are the following types of wear-resistant steel balls on the market:
First of all: white cast iron with chromium as the main alloying element is referred to as chromium alloy cast iron, and casting grinding balls made of chromium alloy cast iron are called chromium alloy cast iron grinding balls.
Secondly, casting grinding balls made of ductile iron are called ductile iron grinding balls, and the ductile iron grinding balls obtained by heat treatment are mainly bainite. The ductile iron grinding ball with martensite as the main matrix obtained by heat treatment is referred to as martensitic ductile iron grinding ball.
The third is: steel balls made of hot-rolled round steel produced by steel mills, the whole process is automatically controlled, the hardness of the steel balls is uniform, the core hardness is high, the crushing rate is low, and the impact value of the steel balls is large
The fourth type is forged by cutting train wheels. This kind of steel ball has low hardness, easy to break, poor wear resistance, but the cost of steel ball is low
Steel balls are important basic components, especially precision industrial steel balls play an important role in the development of national economy. Under some special conditions, steel balls made of special materials are often required to complete the functions required in different environments. In fact, some special steel balls have been widely used in various fields of the national economy, including 9Cr18 and 3Cr13 stainless steel, copper, aluminum and titanium alloys, agate, glass and ceramic balls, etc. Their promotion and application not only promote the development of steel ball production, but also promote the technological development and technology of related industries
Steel balls are important components of bearings and are also the rolling elements used in the bearing industry. Its quality directly affects bearing quality. The post-production process of steel balls, namely automatic cleaning of steel balls, automatic visual inspection (automatic rejection of non-conforming products), automatic rust prevention and counting packaging, is the key factor affecting the quality of steel balls. Ball visual inspection is an indispensable process in steel ball processing. The visual inspection of steel balls mainly includes surface scratches, rust, surface spots, etc.