Description of the 20mm medium chrome cast grinding balls for ball mill
1.Mechanical properties and metallurgical structure
HRC | Impact Value(j/cm²) | metallurgical structure | Falling Times |
≥48 | ≥2.0 | P+C | 9000 |
2.Chemical components as follow
C | Si | Mn | Cr | P | S |
2.0-3.3 | ≤1.2 | ≤0.3-1.5 | 4.9-9.0 | ≤0.1 | ≤0.1 |
3.Picture of the dia 20mm medium chromium alloy steel ball for fine grinding
4.Holding furnace thermostatic pouring
5.Heat treatment tempered furnace
6.Japanese clients visiting Dongfang
7.Heat treatment
Heat treatment is the key step of the whole production process.In the R&D practice,Dongfang invents
Application Method for Warm Period Timing Quenching in Grinding Materials Heat Treatment and other skills.
Machine oil is used to quench,making workpiece heated evenly,promoting the first formed carbide decompose
once again and then forming uniformly distributed reticular carbides in the matrix.
Due to the unique heat treatment process, grinding medias obtain the required hardness and metallurgical
structure,and the hardness difference from surface to core is less than 1.5 HRC.
Package
We usually choose to pack your order by bulk bag or metal pail, about 1ton per unit.
Shipment
1.Usually we ship your order by sea.
2.We'll tell you the shipping status once your order has been sent.
Payment
30% advanced payment, 70% before loading. We accept T/T, L/C.etc.
