High chromium white iron castings with good effect in use, in peacetime use must take into account the actual conditions, especially the lining and the match must have sufficient hardness. High chromium white iron casting in casting should be fully cooled, and then out of the box. The box in the process can not be too early or is out of the box the occurrence of high temperature of the box.
Application of high chromium white iron castings in the cement mill
Cement grinding roll manganese aluminum composite of high chromium cast iron liner for heavy work its hardenability, wear resistance is not ideal, only suitable for effective cross section in the 100mm-140mm casting. Thick section roller lining board needs to have certain impact resistance of high chromium cast iron varieties, large cement mill is used.
Application of high chromium white iron castings in crusher jaw board
With the increase of the degree of mechanization and crusher specifications improve wear resistance of jaw plate becomes more and more outstanding. Because of the poor wear resistance of the jaw plate, resulting in frequent replacement, not only increase the cost and reduce the ore breaking, the productivity, the labor intensity of workers, increase accordingly, improve the problem of jaw plate has caused wear the attention of people. The high chromium white iron casting jaw plate effectively, used for crushing gold ore, the service life is three times more than the high manganese steel.
High chromium white iron castings chemical composition design
Process of 1. high chromium white iron castings often by adjusting the carbon content to change the amount of carbide.
2. high chromium cast iron without other alloy elements, the maximum diameter of quenching energy quenched is 20mm. To improve hardenability, alloy elements must be added.
3. Ms will cause drastic reduction of manganese, high chromium cast iron in tin after quenching have more residual austenite, therefore, generally below 1%.
4. copper decreases Ms and causes a lot of retained austenite, so it is generally controlled below 1.5%.