Cylpebs Grinding Media quality indicators and high temperature tempering

- Mar 30, 2018-

Cylpebs Grinding Media stainless steel deposits to a certain extent contains dust of other metal elements or attachments of dissimilar metal particles. Grinding steel is forged in moist air. The condensate between the attachment and stainless steel will be A micro-battery is connected, which triggers an electrochemical reaction and the protective film is destroyed, which is called electrochemical corrosion.

Cylpebs Grinding Media surface adheres to organic matter. In the presence of water and oxygen, organic acids are formed, and organic acids attack metal surfaces for a long time. The surface of the product adheres to acids, alkalis, and salts (such as alkaline water and gray water splashed on the wall), causing localized corrosion.

Cylpebs Grinding Media quality indicators

High chromium ball quality indicators: Chromium content ≥ 10.0%, carbon content between 1.80% - 3.20% are called high chromium balls, national standards require high chromium ball hardness (HRC) must be ≥ 58 or more, impact value ak ≥ 3.0J/cm2, if the hardness of the high chromium ball must be high temperature quenching + tempering (current domestic high chromium ball quenching oil quenching and air quenching two quenching methods), such as the detection of hardness (HRC) below 54 instructions High chromium balls have not been quenched.

Medium-chromium ball quality indicators: Chromium content of 3.0% to 7.0%, carbon content between 1.80% -3.20% are called medium-chromium ball, impact value ak ≥ 2.0J/cm2, national standards require chromium ball hardness (HRC) must be greater than or equal to 47. To ensure the quality of the ball, the chromium ball must be tempered at a high temperature (to achieve the purpose of eliminating casting stress). If the surface of the ball is dark red, the product has been subjected to high temperature tempering, such as steel. The metal color on the surface of the ball indicates that the product is not tempered at high temperatures.