Prestressed Type
Prestressed Type
The two-roll straightening machine is designed for straightening round bars, tubes and shaft-type workpieces after rolling, drawing, heat treatment or peeling. It corrects bending and improves straightness while supporting stable downstream machining quality.
The machine uses two specially profiled straightening rolls to apply controlled pressure and rotation to the workpiece. It is suitable for carbon steel, alloy steel, bearing steel, stainless steel, spring steel, titanium alloy and other metal bars or tubes.
The equipment is available in light-duty and heavy-duty configurations according to material diameter, strength and production speed. It is widely used in bright bar production lines, tube processing lines and precision metal material finishing.
Advantages include compact structure, reliable straightening performance, easy operation, convenient adjustment and strong adaptability to different bar and tube specifications.
Technical Parameters
| Frame Type JY100A/JY100AY | |||
| Workpiece Requirements | Diameter Range (mm) | 25＜dia＜100 | |
| Length (mm) | ≥2500 | ||
| Surface Hardness | ≤HB320 | ||
| Tensile Strength (MPa) | σb≤1000 | ||
| Straightness(mm/m) | Peeled material ≤3.0; black bar material ≤4.0 | ||
| Diameter Tolerance | Peeled material ≤h10; black bar material: d-2-GB/T702-2004 | ||
| Roundness | ≤50% of diameter tolerance | ||
| Surface Roughness(Ra) | peeled material≤6.3μm | ||
| After Straightening | Straightness(mm/m) | Peeled material ≤0.3; black bar material ≤1.0 | |
| Surface Roughness(Ra) | Peeled material ≤0.8 μm; black bar material: improved compared with blank | ||
| Diameter Tolerance | Peeled material ≤h9; black bar material: improved compared with blank | ||
| Number of Rollers(pcs) | 2 | ||
| Roller Diameter (mm) | Φ380 | ||
| Straightening Speed (m/min) | 2~14 | ||
| Main Motor(kw) | 75kw X 2 | ||
| Lifting Motor(kw) | 4KW | ||
| Total Power(kw) | 170 | ||
