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forged steel ball
forged grinding media1.Even hardness 2.Unbreakable 3.Grinding resistant 4.High impact value
Steel grinding Ball 1) Froged and cast grinding abll 2) Size:20mm-150mm 3) Hardness:55-65HRC
Cast grinding ball. grinding media steel ball. Forged steel ball.
Our products have obtained ISO 9001---2000.
A) Diameter: 20~150mm balls,
B). Characteristics: 1) High hardness 2) Good wear-Resistance 3) No breaking 4)No mal-roundness
C). Applied fields:1) Metal Mines 2) Cement plants 3) Water coal slurry 4) Power stations 5) Chemical industry
Our main products as follows:
1.Forged steel grinding balls
Chemical elements of forged steel balls | |||||
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 |
Nominal diameter | Diameteical Tolerance | Weight of single ball in average | Surface hardness | Impact toughness |
(mm) | (mm) | (g) | (HRC) | (j/cm2 ) |
Φ20 | +2 -1 | 32 | 50-65 | ≥12 |
Φ25 | +2 -1 | 64 | 50-65 | ≥12 |
Φ30 | +2 -1 | 110 | 50-65 | ≥12 |
Φ40 | +2 -1 | 263 | 50-65 | ≥12 |
Φ50 | +2 -1 | 513 | 50-65 | ≥12 |
Φ60 | +3 -2 | 888 | 50-65 | ≥12 |
Φ70 | 1410 | |||
Φ80 | 2104 | |||
Φ90 | 2996 | |||
Φ100 | 4110 | |||
Φ110 | +4 -2 | 5457 | 45-65 | |
Φ120 | 7102 | |||
Φ130 | 9030 | |||
Φ140 | +4 -3 | 11278 | ||
Φ150 | 13871 |
2. Cast Grinding Ball
Items | Suface hardness(HRC) | Endurance impact test | ||
Quenched | Unquenched | (Times) | ||
High chrome Casting grinding balls | ≥60 | ≥50 | ≥8000 | |
Middle chrome Casting grinding balls | -- | ≥50 | ||
Low chrome Casting grinding balls | -- | ≥45 | ||
Forged steel ball | 55-65HRC | |||
Item | SIZES | |||||||||||||
φ17 | φ20 | φ25 | φ30 | φ40 | φ50 | φ60 | φ70 | φ80 | φ90 | φ100 | φ110 | φ120 | φ130 | |
Tolerence | +1.0 | +2.0 | +3.0 | +3.5 | ||||||||||
-1.0 | -1.0 | -1.0 | -1.5 | |||||||||||
Difference between max diam and min diam | ≤1.0 | ≤2.0 | ≤3.0 | ≤4.0 | ||||||||||
bolas forjadas para molienda y bolas fundidas para molienda.