Grinding steel ball manufacturing method and steps

- May 18, 2019-

1. Preparation method:

Low-chromium steel balls are the most important grinding bodies in ball mills, and foreign countries are called grinding steel balls. Low-chromium steel balls are produced by medium-frequency electric furnace smelting, metal mold or sand casting. Therefore, domestic wear-resistant materials manufacturers are often referred to as low-chromium alloy cast balls.

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technical standard:

 1. Whether the grinding steel ball is wear-resistant, the most important data is the hardness test, which can be tested by Rockwell hardness tester. Practice has shown that the service life of steel balls above HRC60 is twice that of HRC40-50.

2. Low-chromium steel balls refer to steel balls with chrome content ≤3.0% and carbon content between 1.80%-3.30%, all of which are low chrome balls. The national standard requires low chrome ball hardness (HRC) to be ≥45 degrees or more. If the quality of the low chrome ball is recommended, heat treatment tempering or vibration aging treatment must be used. If the hardness (HRC) is less than 40 degrees, the hardness of the low-chromium ball is insufficient or excessively generated.

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Application areas:

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.