Grinding steel ball in the process of using mainly refers to the material used for grinding mill balls, when in use is actually a kind of grinding body. Wear-resistant steel ball is actually a kind of ball grinding ball, such as when used in its casting steel ball, rolling steel ball, bearing steel ball and forged steel ball can be called grinding steel ball, who engaged in grinding operations Steel balls can be called grinding balls.
Grinding ball preparation method
Grinding steel ball in the production process is mainly the use of intermediate frequency electric furnace smelting, metal mold or sand casting method of production, so the domestic wear-resistant materials manufacturers often referred to as low-chromium alloy cast ball.
Grinding steel ball technical standards
1. Grinding steel ball is wear-resistant in use, the most important data is the hardness of the test, the use of Rockwell hardness tester can be used for testing. Practice shows that the service life of steel balls above HRC60 is twice as high as that of HRC40-50.
2. Grinding steel ball refers to the chromium content ≤ 3.0%, the carbon content of 1.80% -3.30% of the balls are ground steel ball, the national standard requires grinding ball hardness (HRC) must be ≥ 45 degrees above, if To ensure the quality of grinding steel balls recommended heat treatment must be used tempering or vibration aging. Such as the detection of hardness (HRC) below 40 degrees below the low-chromium ball hardness or over-burning.
Grinding steel ball applications
Grinding steel balls are widely used in metallurgical mines, cement building materials, thermal power generation, flue gas desulfurization, aerated concrete, magnetic materials, chemicals, coal water slurry, pellets, slag, ultrafine powder, fly ash, calcium carbonate, quartz Sand and other industries.