tube straightening roll
long work life of roll
high wear-resisting of roll
high hardness of roll
ISO9001-2000
tube straightening roll
The steel roll has the high degree of hardness , the high resistance to wear, bears wearily, anti-corrosive, the outstanding anti-linking, the especially qualify stainless steel pipe production, and succeeds applies in the cold stamping, the cold pillar, stretches the mold.
technical data
| GB | Chemical composition(mass fraction)/% | |||||||||
| C | Si | Mn | Cr | Mo | V | Ni | Cu | S | P | |
| 9Cr2 | 0.80~0.95 | ≤0.40 | ≤0.40 | 1.30~1.70 | __ | __ | __ | __ | ≤0.030 | |
| 8Cr2MoV | 0.80~0.90 | 0.15~0. 40 | 0.30~0.50 | 1.80~2.40 | 0.20~0.40 | 0.05~0.15 | ≤0.25 | ≤0.25 | ||
| 9Cr2Mo | 0.85~0.95 | 0.25~0.45 | 0.20~0.35 | 1.70~2.10 | 0.20~0.40 | __ | ||||
| 9Cr2MoV | 0.20~0.30 | 0.10~0.20 | ||||||||
| 9Cr3Mo | 2.50~3.50 | 0.20~0.40 | __ | |||||||
| 8Cr3MoV | 0.78~1.10 | 0.40~1.10 | 0.20~0.50 | 2.80~3.20 | 0.20~0.60 | 0.05~0.15 | ≤0.80 | ≤0.25 | ≤0.025 | |
| 8Cr5MoV | 0.78~0.90 | 0.40~1.10 | 0.20~0.50 | 4.80~5.50 | 0.20~0.60 | 0.10~0.20 | ≤0.020 | |||
surface hardness of barrel roll
| serial number | surface hardness of barrel roll(HSD) | Recommended for |
| 1 | ≥95 | work roll of pinch pass mill and finishing mill |
| 2 | 90~98 | cold work roll of metal plate and strip |
| 3 | 75~90 | cold work roll of metal plate and strip |
hardening layer hardness of cold barrel roll
| barrel roll diameter/mm | surface hardness of barrel roll(HSD) | hardening layer hardness/mm | ||
| 2%Cr | 3%Cr | 5%Cr | ||
| ≤300 | ≥95 | 6 | 15 | 15 |
| ≤300 | 90~96 | 8 | 20 | 20 |
| ≤300 | 75~90 | 10 | __ | __ |
| 301~500 | ≥95 | 7 | 20 | 25 |
| 301~500 | 90~96 | 12 | 25 | 30 |
| 301~500 | 75~90 | 14 | __ | __ |
| >500 | ≥95 | 8 | 20 | 25 |
| >500 | 90~96 | 13 | 25 | 35 |
| >500 | 75~90 | 15 | __ | __ |
In order to serve and supply you better tube straightening roll,we sincerely hope that you could afford such information as below:
1)Detailed size or Dimension:Outer Diameter,Bore Diameter,Teeth Number,Thickness,Segment Size;
2)Segment Welding Methods:Laser,High frequncy,Hot press,Cold press
3) Base Body Materail: 9CrSi,Steel,or others
4) Your Quantity;
5) Your diagram;
6) any other information you want to know.
We always adhere to the principle of equality and mutal benefit. We'll offer you the best products and service.
