Chrome Alloy Liner Plate

0086-371-86581139

Type:Liner plate

Capacity:more than one set

Raw materials:Chrome Alloy

Delivery:15-30days

Application:ball mill

Introduction: The material is chrome alloy whose notable feature is that the M7C3 eutectic carbide, with micro-hardness HV1300-1800, disperses in the martensite matrix (the hardest structure of metal matrix) as the structure of broken net and isolation to reduce the effect of split on the metal matrix.

So the chrome alloy liner has the performances of high strength, high toughness and high wear-resistance, and at present it represents the highest level of metal wear-resistant materials.

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.

Cautions

(1) It is strictly forbidden that the mill is no-load running. The mill no-load running will cause the grinding body to impact on the cylinder, and serious damage to the service life of the liner and increasing abrasive wear of the grinding body.

(2) Clean the inner of cylinder before installing the liners.

(3) Tighten the liner screws and pad the seal gaskets, in order to prevent the leakage of pulp.

(4) Before installing the liner, the liner should be inspected and trimmed to ensure the liner’s back and around are smooth. The bolt hole should be clear sand and casting flash, so that the bolt can penetrate smoothly. Its back and around, as appropriate, could be trimmed by the grinding wheel until meet the installation requirements.

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Parameters

1.High Chrome Alloy Liner for Ball Mill

Chemical Composition

Name High Chrome Alloy Liner
Chemical composition(%) C 2.0-3.6
Si 0-1.5
Mn 0-2.0
Cr 8-26
Mo ≤3.0
Cu ≤1.2
P ≤0.06
S ≤0.06

Mechanical Property and Metallographic Structure

Name Surface hardness(HRC) Impact value(J/cm2) Metallographic Structure
High Chrome Alloy Liner ≥56 ≥3.5 M+C+A
M- martensite       C-carbide      A-retained austenite

Product Specification

Size Hole diameter(mm) Liner length mm)
≤40 ≥40 ≤250 ≥250
Tolerance +2
0
+3
0
+2 +3

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

Medium Chrome Alloy Liner for Ball Mill

Chemical Composition

Name Medium Chrome Alloy Liner
Chemical Composition(%) C 2.0-3.2
Si 0-1.2
Mn 0-2.0
Cr 4-6
Mo 0-3.0
Cu ≤1.2
P ≤0.06
S ≤0.06

Mechanical Property and Metallographic Structure

Name Medium Chrome Alloy Liner M- martensite       C-carbide
Surface hardness(HRC) ≥45
Impact value(J/cm2) ≥10
Metallographic Structure M+C

Product Specification

Size Hole diameter(mm) Liner length mm)
≤40 ≥40 ≤250 ≥250
Tolerance +2 +2 +3

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 Liner for Ball Mill

Chemical Composition

Name Low Chrome Alloy Liner
Chemical Composition(%) C 2.1-3.6
Si 0-1.5
Mn 0-2.0
Cr 1-3
Mo 0-1.0
Cu ≤1.2
P ≤0.1
S ≤0.1

Mechanical Property and Metallographic Structure

Name Low Chrome Alloy Liner M- martensite       C-carbide      P-pearlite
Surface hardness(HRC) ≥40
Impact value(J/cm2) ≥15
Metallographic Structure M+C+P

Specification

Size Hole diameter(mm) Liner length mm)
≤40 ≥40 ≤250 ≥250
Tolerance +2 +2 +3

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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