effect of heat treatment on steel ball crusher
3.HEAT TREATMENTSTUDY. 3.1 Pre-testTreatment. The as-cast grindingballswith the diameter of 110 mm were selected randomly from the grindingballsproduced by the sand-coating process in the iron mould, and 16 standard impact samples with the dimension of 55mm * l0 mm * l0 mm were cut by linear cutting machine.No shrinkage or porosity was found in the sample taken from the middle of the ...
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