Blow bars are thick slabs of metal, typically some mixture of chrome, that are forged for the purpose of effectively breaking apart material like asphalt, concrete, limestone, etc.
Blow bar is a critical part during the crushing process with horizontal shaft impactor. Materials of the blow bars are usually selected according to the function of the impact crusher.
When set in the horizontal impact crushers, blow bars are inserted into the rotor and rotated at high speeds, making the whole rotor assembly spins repeatedly striking the material. During this process, the blow bar fractures the materials until it meets the appropriate size to fall out through the impact crusher chamber.
| High Chrome Casting Material Chemical Composition | |||||||||
| Code Elem | Cr | C | Na | Cu | Mn | Si | Na | P | HRC |
| KmTBCr4Mo | 3.5-4.5 | 2.5-3.5 | / | / | 0.5-1.0 | 0.5-1.0 | / | ≤0.15 | ≥55 |
| KmTBCr9Ni5Si2 | 8.0-1.0 | 2.5-3.6 | 4.5-6.5 | 4.5-6.5 | 0.3-0.8 | 1.5-2.2 | 4.5-6.5 | / | ≥58 |
| KmTBCr15Mo | 13-18 | 2.8-3.5 | 0-1.0 | 0-1.0 | 0.5-1.0 | ≤1.0 | 0-1.0 | ≤0.16 | ≥58 |
| KmTBCr20Mo | 18-23 | 2.0-3.3 | ≤2.5 | ≤1.2 | ≤2.0 | ≤1.2 | ≤2.5 | ≤0.16 | ≥60 |
| KmTBCr26 | 23-30 | 2.3-3.3 | ≤2.5 | ≤2.0 | ≤1.0 | ≤1.2 | ≤2.5 | ≤0.16 | ≥60 |