Brand:DONGHAN
Model:20-150mm
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1. Forged steel balls for globe mill
Size: 20mm-150mm
Hardness:HRC55-65
Chemical elements:
C: 0.52-0.65; Si: 0.17-0.37; Mn: 0.6-1.2;; S & P: 0.035Max; Cr: 0.25Max
2.Application fields
Industries of cement building material, metallurgical selection in mine, grinding coal in power plant, chemical industry and machinery,ect.
3.Characters
High hardness,No breakage,Good wear resistance,even wearing
4.Hardness
SIZE | SURFACE | CORE |
DIA30-60MM | HRC60-64 | HRC59-63 |
DIA70-80MM | HRC60-64 | HRC58-62 |
DIA90-100MM | HRC60-64 | HRC57-61 |
DIA110-140MM | HRC55-60 | HRC29-58 |
5.The process line of production
Raw material→ cutting→ W.B stove→ forging→ roll forging→ transfer machine →quenching→ heat treatment→ dimension test→ hardness teat →packing→ transportation→sea freight




