forged grinding media steel balls
1.Obtained ISO 9001:2008.
2. Diameter: 20~150mm balls.
3. HRC: 50-65
Detailed Product Description
1. High combined efficiency
2.No breaking
3.Even hardness
4.Grinding resistant
Our products have obtained ISO 9001-2008.
A) Diameter: 20~140mm balls,
B). 1) even hardness
2) Good wear-Resistance
3) No breaking
4) No mal-roundness
D). Applied fields:
1)Mines
2) Cement plants
3) Water coal slurry
4) Chemical industry
Our main products as follows:
1. Forged steel balls
Size: 20mm-150mm
Hardness: HRC55-65
Chemical elements: 0.62-0.70; Si: 0.17-0.37; Mn: 0.9-1.2;; S & P: 0.04Max; Cr: 0.25Max.
2. High chrome balls
Size: 20mm-120mm
Hardness: HRC58-65; Chrome content: 11-14%
3.Low chrome cast balls
Size: 20mm-120mm
Hardness: HRC45-55; Chrome content: 1-3.5%
THE PROCESS LINE OF PRODUCTION
RAW MATERIALS→cuting→ stove→ forging→ transfer machine→ quenching→ heat treatment→ dimension test→ hardness test→ packing→ set freight
CHEMICAL ELEMENTS
C | Si | Mn | Cr | S | P |
0.50-0.65 | 0.15-0.37 | 0.6-1.2 | ≤0.25 | ≤0.04 | ≤0.04 |
0.7-0.9 | 0.45-0.75 | 0.7-1.25 | 0.11-0.4 | ≤0.04 | ≤0.04 |
SPECIFICATION AND HARDNESS OF FORGING BALL
Nominal diameter (mm) | Diametrical Tolerance (mm) | Weight of single forging ball in average (g) | Number of piece of one ton forging ball in average | Surface hardness (HRC) | Impact toughness (j/cm2) |
20 25 30 40 50 |
+2 -1 | 32 64 110 263 513 | 31250 15625 9090 3802 1949 |
50-65 |
≥12 |
60 70 80 90 100 |
+3 -2 | 888 1410 2104 2996 4110 | 1126 709 475 333 243 | ||
110 120 130 | +4 -2 | 5457 7102 9030 | 182 140 110 |
45-60 | |
140 150 | +4 -3 | 11278 13871 | 88 72 |
