Обзор

Наш DFT Direct Forming&Sizing Mill with Quick Change System serve as the core forming assembly for high-frequency ERW tube production lines. They gradually shape incoming steel strip into a closed tubular profile via staged roller deformation. The butted strip edges are fused by an HF induction welder to form a sturdy, long-service weld seam. Newly welded tubes are conveyed to the cooling zone for controlled heat dissipation. Sizing stands accurately calibrate outer dimensions to meet strict tolerance standards, and downstream Turks Head units optimize profiles and implement pre-straightening, yielding finished square and rectangular tubes with stable dimensional uniformity, superior straightness and excellent overall geometric precision.
Conventional Forming(W Forming)
This design features enhanced maintainability and operational convenience, while effectively improving on-site safety.
High-precision forming stands adopt mechanical shaft expansion for roll shaft connection, ensuring outstanding dimensional accuracy of pipe diameters.
It delivers superior performance and maximizes production throughput. This solution not only boosts production speed, but also reduces equipment wear and tear to extend the service life of the machinery.
Flexible Forming(FF/FFX)
It not only cuts down roll replacement time significantly, but also reduces roller costs by 40–60%.
Rollers are compatible for producing round and square tubes within a certain size range on the same production line, eliminating frequent replacements for different specifications.
By automating multiple procedures in the tube forming process, FF/FFX technology minimizes manual work, effectively lowering labor costs and reducing human error.
Direct Forming(DFT)
It delivers excellent flexibility. Tube dimensions within the mill’s size range can be adjusted without roll replacement.
Full automation of line operation and roll adjustment cuts labor requirements, boosts productivity, and lowers inventory and associated costs.
Equipped with a built-in recipe database and mobile touch screen, the system enables one-click automatic adjustment of roll angles and positions during product changeovers.
Quick Change System
During product changeover, the entire shaft assembly can be lifted from the horizontal stand. Replacement takes only minutes rather than hours.
The universal shaft is automatically engaged and disengaged by hydraulic cylinders. This allows rolls to be prepared, replaced and adjusted offline without halting production.
While offline roll preparation is underway, a pre-assembled spare shaft assembly can be mounted onto the horizontal stand to finish the changeover. This quick-change system drastically cuts machine downtime.
Технические характеристики
| Model╲Spec. |
Size(mm) |
Thickness(mm) |
Forming Method |
Roll Quick Change |
| ZJ-GH32 |
Φ10-32 |
1.1-2.25 |
W |
Roller changing trolley |
| ZJ-GH50 |
Φ12-50 |
1.2-2.75 |
W |
Roller changing trolley |
| ZJ-GH76 |
Φ32-76 |
1.5-3.5 |
W |
Rafted System |
| ZJ-GH89 |
Φ32-89 |
1.5-3.75 |
W |
Rafted System |
| ZJ-GH114 |
Φ40-114 |
1.5-4.0 |
W |
Rafted System |
| ZJ-GH140 |
Φ48-140 |
1.5-5.0 |
W |
Rafted System |
| ZJ-GH165 |
Φ76-165 |
1.8-6.0 |
W/DFT |
Rafted System |
| ZJ-GH219 |
Φ89-219 |
2.0-8.0 |
FF/DFT |
Shaft Assembly |
| ZJ-GH273 |
Φ114-273 |
3.0-10.0 |
FF/DFT |
Shaft Assembly |
| ZJ-GH325 |
Φ165-325 |
5.0-14.0 |
FF/DFT |
Shaft Assembly |
| ZJ-GH355 |
Φ165-355 |
5.0-15.0 |
FFX/DFT |
Shaft Assembly |
| ZJ-GH406 |
Φ219-406 |
6.0-16.0 |
FFX/DFT |
Shaft Assembly |
| ZJ-GH457 |
Φ219-457 |
6.0-18.0 |
FFX/DFT |
Shaft Assembly |
| ZJ-GH508 |
Φ273-508 |
6.0-20.0 |
FFX/DFT |
Shaft Assembly |
| ZJ-GH610 |
Φ273-610 |
6.0-21.0 |
FFX/DFT |
Shaft Assembly |
| ZJ-GH660 |
Φ325-630 |
6.0-22.0 |
FFX/DFT |
Shaft Assembly |
| ZJ-GH711 |
Φ325-760 |
8.0-22.0 |
FFX/DFT |
Shaft Assembly |