Compare Medium Chromium Steel With ZG40Cr1Mn1MoRe Alloy Steel Mill Liners
Ball mills are widely used in thermal power plants to crush coal powder. The quality of the ball mill liners, installation, and structure are reasonable, which are related to the safe operation and efficient production of ball mills. Ball mills are widely used in coal-fired power plants to crush coal powder. The quality of the ball mill liners, installation, and structure are reasonable, which are related to the safe operation and efficient production of ball mills.
There are two materials both can use to cast mill liners. Compare Medium Chromium Steel Mill Liner With ZG40Cr1Mn1MoRe Alloy Steel Mill Liners:
Material Comparison
| ZG40Cr1Mn1MoRe & Medium Chromium Steel Chemical Composition % | |||||||||
| Element | C | Cr | Mo | Cu | Si | Mn | S | P | Re |
| Medium Chromium Steel Mill Liner | 0. 4～1. 2 | 2. 0～9. 0 | 0. 1～1. 0 | < 1. 0 | 0. 5～1. 5 | 0. 5～1.5 | ≤0. 04 | ≤0. 04 | ≤0. 02 |
| ZG40Cr1Mn1MoRe Alloy Steel Mill Liners | 0. 2～0. 6 | 0. 5～1. 5 | 0. 1～1. 0 | / | 0. 5～1. 5 | 0. 8～2. 0 | ≤0. 04 | ≤0. 04 | ≤0. 02 |
Mechanical Character Comparison
The mill liners after heat treatment, its mechanical character is below:
- Medium Chromium Steel Mill liners. Impact Toughness: Ak ≥10 J/ cm2; Hardness: HRC 40～50
- ZG40Cr1Mn1MoRe Mill Liners. Impact Toughness: Ak ≥10 J/ cm2; Hardness: HRC 45～55
Microstructure Comparison
The mill liners after heat treatment, its microstructure analysis is below:
- Medium Chromium Steel Mill liners. The small number of eutectic carbide + tempered martensite + secondary carbide + small amount of retained austenite.
- ZG40Cr1Mn1MoRe Mill Liners. Tempered martensite + small amount of retained austenite.
ZG40Cr1Mn1MoRe Alloy Steel Mill Liners Advantages
- The alloy material is saved and the manufacturer reduces the production cost.
- It reduces the labor intensity of production and improves the working conditions of employees.
- The hidden danger of cracks is eliminated and the safe operation of the power plant is guaranteed.
- The hardness of the mill liner is increased, the wear resistance of the casting is increased, the life of the casting is increased, and the benefit of the power plant is increased.
Mr. Nick Sun NICK@XZHUAGANG.COM
Post time: Oct-23-2020