Wearable steel ball
Forged grinding steel balls
Size Surface Core
DIA 40-60 mm HRC60-64 HRC59-63
DIA 70-80 mm HRC60-64 HRC58-62
DIA 90-100 mm HRC60-64 HRC57-61
DIA 110-140 mm HRC55-60 HRC52-58
Casting grinding steel balls
HRC Name Trademark Falling ball impact fatigue life (number of)
Quenched Non-quenched
ZQCr26 ≥56 ≥45 ≥8000
High-chromium cast iron ball
ZQCr20 ≥56 ≥45 ≥8000
High-chromium cast iron ball
ZQCr15 ≥56 ≥49 ≥8000
High-chromium cast iron ball
ZQCr8 - ≥48 ≥8000
Moderate-chromium cast iron ball
ZQCr2 - ≥45 ≥8000
Low-chromium cast iron ball
ZQSi3 ≥50 - ≥8000
Bainitic ductile iron grinding
Casting Grinding Ball Specifications)
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Thiourea |
Test items Index
Thiourea % ≥ 99
Heating Loss % ≤ 0.4
Ash % ≤ 0.1
Water insoluble matter % ≤ 0.02
Thiocyanate % ≤ 0.02
Melting... |
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Coconut shell activated carbon |
Item Index
Iodine value(mg/g) ≥ 900
Filling density(g/cm3) 0.45
Loss on drying(%) ≤ 10
Strength(%) ≥ 97
PH value 6-8
Granularity (ey... |
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Toluene-2,4-diisocyanate |
Test items Index
Isocyanate ％ ≥99.0
Saponifiable chlorine ％ ≤0.01
Chlorine ％ ≤0.04
Crystallizing point℃ ％ 5.0-6.5
Chromaticity （Hazen... |
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Glass Flake |
一、Ingredients:
Acid alkali glass.
二、Performance:
1、Anti-corrosion medium penetration.
2、Improve the mechanical strength.
3、Lower lining c... |
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Potassium dichromate |
Item Index
Potassium dichromate （K2Cr2o7） % ≥ 99.7
Chlorides (Cl)% ≤ 0.05
Insoluble ≤ 0.02
Sulfates ( SO4-2) % ≤ 0.02
Na+ % ≤ 0... |
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