Piercing Mill Roller
Piercing Mill Roller is the main tool of rolling deformation, which plays an important role in ensuring the quality of steel tube production.
Forged Piercer roller material:
Ⅰ. 65Mn
chemical composition of 65 Mn:
| C | Si | Mn | S | P | Cr | Ni | Cu |
| 0.62-0.70 | 0.17-0.37 | 0.90-1.20 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
Hardness: 260-280HB
Ⅱ.C55
chemical composition of C55:
| C | Si | Mn | S | P | Cr | Ni | Cu |
| 0.52-0.60 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | ≤0.25 |
Piercer rolls must exhibit a high resistance to wear and good gripping ability under alternating mechanical and thermal stresses.After the surface treatment,the piercer rolls have high friction,and it can provide good conditions for pipe milling.
Please the blow pictures for the processing of piercer rolls.
Production process :
- Forged material
- Quenching and tempering
- Finish machining
- Assembly
- packing
Quality Assurance :
MT report ,UT report and Size report will be supplied before shipment
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