Wear Resistant Steel Ball

0086-371-86581139

Type:Wear Resistant Steel Ball

Capacity:

Raw materials:

Delivery:15-30days

Application:ball mill

Introduction:Chromium alloy cast balls are widely applied in the powder production and ultrafine powder preparation. The related industries are such as cement, building materials, metal mining, coal slurry, thermal power, chemical engineering, ceramic coating, papermaking, magnetic materials and so on.

The hardness gradient of surface distributes averagely. With the low wear, good toughness and less broken, the product quality is not lower than GB/T17445-2009 standard, never deformation. The balls can improve cement specific surface area, increase the recovery ratio of concentrate ore, prolong the service life of mill liners, and improve the mill capacity, thus the production cost is greatly reduced.

Manufacturing technique

The high quality scrap steel, chrome alloy and other alloy materials are smelted by the medium-frequency electric furnace, then through mirco-alloying treatment, tempering, and finally casting by steel moulds. It adopts the constant temperature casting process to ensure that products without sand, porosity, depression and other quality defects. The heat treatment adopts oil quenching process. The quenching and tempering can change the internal structure of the ball to reduce the inner stress, control the broken rate, and enhance the performance after quenching. We adopt the advanced spectrum detection during the processes of before smelting, after smelting, semi-finished product and finished product to ensure that the chemical composition reach the standard and the performance is stable.

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Parameters

Name Common High Chrome Alloy Casting Ball Special High Chrome Alloy Casting Ball
Chemical Composition(%) C 2.0-3.3 2.0-3.3
Si ≤1.2 ≤1.2
Mn 0.3-1.5 0.3-1.5
Cr 10-13 15-23
Mo 0-3.0 0-3.0
Cu 0-1.2 0-1.2
P ≤0.1 ≤0.1
S ≤0.06 ≤0.06

Mechanical Property and Metallographic Structure

Name Surface hardness
(HRC)
Impact value
(J/cm2)
Metallographic Structure Falling ball impact fatigue life
Common High Chrome Alloy Casting Ball ≥58 ≥4 M+C+A ≤Φ80 ≥15000
≥Φ80 ≥10000
M- martensite       C-carbide      A-retained austenite

Product Specification

Specification(mm) Unit Weight(kg) Quantity(pc/t) Specification(mm) Unit Weight(kg) Quantity(pc/t)
Φ30 0.11 9091 Φ90 2.9 345
Φ40 0.25 3891 Φ100 4 250
Φ50 0.5 2000 Φ110 5.3 188
Φ60 0.86 1153 Φ120 6.8 147
Φ70 1.37 729 Φ130 7.7 129
Φ80 2.05 487 Φ140 8.74 114

Remark: It must make a contract when the above products need to be adjusted the chemical composition or added other alloy elements.

2.Medium Chrome Alloy Casting Ball Chemical Composition

Name Medium Chrome Alloy Casting Ball
Chemical Composition(%) C 2.0-3.3
Si ≤1.2
Mn 0.3-1.5
Cr 3-6
Mo 0-1.0
Cu 0-1.2
P ≤0.1
S ≤0.06

Mechanical Property and Metallographic Structure

Name Surface hardness
(HRC)
Impact value
(J/cm2)
Metallographic Structure Falling ball impact fatigue life
Medium Chrome Alloy Casting Ball ≥47 ≥3.0 P+C ≤Φ80 ≥15000
≥Φ80 ≥10000
P-pearlite       C-carbide

Product Specification

Specification(mm) Unit Weight(kg) Quantity(pc/t) Specification(mm) Unit Weight(kg) Quantity(pc/t)
Φ30 0.11 9091 Φ90 2.9 345
Φ40 0.25 3891 Φ100 4 250
Φ50 0.5 2000 Φ110 5.3 188
Φ60 0.86 1153 Φ120 6.8 147
Φ70 1.37 729 Φ130 7.7 129
Φ80 2.05 487 Φ140 8.74 114

Remark: It must make a contract when the above products need to be adjusted the chemical composition or added other alloy elements.

Low Chrome Alloy Casting Ball Chemical Composition

Name Low Chrome Alloy Casting Ball
Chemical Composition(%) C 2.1-3.6
Si ≤1.5
Mn 0.3-1.5
Cr 1-3
Mo 0-1.0
Cu 0-0.8
P ≤0.1
S ≤0.1

Mechanical Property and Metallographic Structure

Name Surface hardness
(HRC)
Impact value
(J/cm2)
Metallographic Structure Falling ball impact fatigue life
Low Chrome Alloy Casting Ball ≥45 ≥2.5 P+C ≥10000
P-pearlite       C-carbide

Product Specification

Specification(mm) Unit Weight(kg) Quantity(pc/t) Specification(mm) Unit Weight(kg) Quantity(pc/t)
Φ30 0.11 9091 Φ90 2.9 345
Φ40 0.25 3891 Φ100 4 250
Φ50 0.5 2000 Φ110 5.3 188
Φ60 0.86 1153 Φ120 6.8 147
Φ70 1.37 729 Φ130 7.7 129
Φ80 2.05 487 Φ140 8.74 114

Remark: It must make a contract when the above products need to be adjusted the chemical composition or added other alloy elements.

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