How To Distinguish The Ball Mill Ball Hardness
The surface of the cast grinding steel ball is not allowed to have the casting defects such as the crack, and the obvious gas porosity, inclusion, shrinking cavity, cold shut, elephant skin, etc It is not allowed to have the shrinkage cavity, shrinking porosity, gas porosity, inclusion, and other cavity defects on the section including plane pasting through the pouring gate and the ball centre.Repeated heat treatment and swaging is performed need at least several times. Tensile strength Min. Mpa Elongation Min. Hardness Min. HRC Impact Energy J cm2 90WNiFe Heat treatment 17.10 0.15 1000 1100 18 29 25 29 170 92.2WNiFe Heat treatment 17.60 0.15 900 1000 15 25 25 29 170 rod, ball, cylinder, block, etc. for Guangxi Chentian.