Low chromium section is the most important grinding body in ball mill

Release time：2020-06-15 Thechemicalpropertiesofchromiuminthelowchromiumball:Chromiumcanslowlydissolveindilutehydrochloricacid,dilutesulfuricacid,andformabluesolution.ItturnsgreenincontactwithairbecauseoftheoxidationofCr2O3,w...

　　The chemical properties of chromium in the low chromium ball: Chromium can slowly dissolve in dilute hydrochloric acid, dilute sulfuric acid, and form a blue solution. It turns green in contact with air because of the oxidation of Cr2O3, which is green, by oxygen in the air. Chromium, however, is insoluble in concentrated nitric acid and is blunt because of the formation of a tight oxide film on the surface. At high temperatures, chromium can be directly combined with halogens, sulfur, nitrogen, carbon, etc.

　　Low chromium ball manufacturing method

　　Low chromium ball is the use of intermediate frequency electric furnace smelting, metal mold or sand mold casting way of production, so the domestic wear-resistant material manufacturers often called low chromium alloy casting ball. To ensure the quality of low chromium ball, it is suggested that heat treatment and tempering or vibration aging treatment should be adopted. If the test hardness (HRC) is less than 40 degrees, it indicates that the low chromium ball has insufficient hardness or has overburned.