Which is the best material for cone crusher liners?
Standard Manganese Steel
The standard material for cone crusher liners is manganese steel, which is also called austenitic manganese steel or modified austenitic manganese steel. There are three common grades:
- Mn14Cr2
- Mn18Cr2
- Mn22Cr2
Those Chemical Composition Mechanical as the following table:
|
Mn (%) |
C (%) |
Cr (%) |
P (%) |
S (%) |
Si (%) |
|
|
Mn14Cr2 |
11-14 |
1.15-1.25 |
1.5-2.5 |
≤0.05 |
≤0.04 |
0.3-0.8 |
|
Mn18Cr2 |
17-19 |
1.15-1.3 |
1.5-2.5 |
≤0.05 |
≤0.04 |
0.3-0.8 |
|
Mn22Cr2 |
21-23 |
1.1-1.4 |
1.5-2.5 |
≤0.05 |
≤0.04 |
0.3-0.8 |
The selection for those three kinds of material is as the following:
| Material | Applications | Properties |
| Mn14Cr2 | hardest material, mildly abrasive material | highest impact resistance, low abrasion resistance |
| Mn18Cr2 | harder material, medium abrasive material | higher impact resistance, better abrasion resistance than Mn14 |
| Mn22Cr2 | hard material, most abrasive material | less impact resistance, better abrasion resistance than Mn18 |
Modified Manganese Steel
This modified material is developed by Hunan JY Casting for copper mine customers. When crushing some material (such as copper mines stone), the standard manganese cone liners can not get a long lifetime. So, Hunan JY Casting engineers change the metallographic structure of the product by adjusting the ratio of manganese to carbon and adding some trace elements to obtain a more suitable life.
Manganese Steel With TIC Inserts
When crushing hard stone, the manganese steel cone liners can not work for a long time. Even the Mn22Cr2 cone crusher liners also can not get a good result. In order to solve this problem, the Hunan JY Casting engineer inlaid the titanium carbide rods on the working surface of the cone liners. When crushing the stone, the high-hardness titanium carbide rod first touches the stone, thereby improving the hardness and wear resistance of the crusher liners. This kind of material life can be 1.5- 2 times than normal manganese steel.
Hey people!!!!!
Good mood and good luck to everyone!!!!!