Home > Products > Welded Pipe production line > induction square pipe forming machine oval pipe forming machine induction high frequency welding pipe machine
induction square pipe forming machine oval pipe forming machine induction high frequency welding pipe machine
- 15 Set / Sets per Month
- Tianjin Xingang Port can delivery the induction high frequency welding pipe machine
- T/T
Product Details
Condition: | New | Type: | Tile Forming Machine | Tile Type: | Colored Glaze Steel |
Use: | Roof | Production Capacity: | 8-12m/min | Place of Origin: | China |
Brand Name: | Zhongtuo | Model Number: | induction high frequency welding pipe machine | Power(W): | 5.5KW |
Voltage: | 380V 50Hz 3phases | Dimension(L*W*H): | 6500*1300*1100 | Weight: | 4.5T |
Certification: | CE/ISO9001 | Warranty: | 24 Months | After-sales Service Provided: | Engineers available to service machinery overseas |
Product Description
induction square pipe forming machine oval pipe forming machine induction high frequency welding pipe machine
High-frequency induction (HFI) welding is used widely by the tube producing industry, but a large number of variables need to be controlled to perform the operation successfully.
In the HFI welding process, high-frequency current is induced in the open seam tube by an induction coil located ahead of (upstream from) the weld point (see Figure 1).
Tube edges are spaced apart when they move through the coil, forming an open V, which has an apex slightly ahead of the weld point. The coil does not make contact with the tube and acts as the primary of a high-frequency transformer. The open seam tube acts as a one-turn secondary.
In high-frequency induction (HFI) welding, a high-frequency electric current is induced in the open seam of a tube by an induction coil.
As in general induction heating applications, the induced current path in the workpiece tends to conform to the shape of the induction coil. Most of the induced current completes its path around the formed strip by flowing along the edges and crowding around the apex of the V-shaped opening in the strip.
High-frequency current density is the highest in the edges near the apex off the V and at the apex itself. The tube is heated rapidly, raising the edges to welding temperature when they arrive at the apex. Pressure rolls force the heated edges together, completing the weld.
The high frequency of the welding current creates concentrated heating along the V edges. A small portion of the total current also finds its way around the back of the formed strip. Unless the diameter of the tube is small compared with the V length, the current tends to flow along the edges of the tube forming the V.
High-frequency welding process is an efficient way to weld tube and pipe at high production rates. This process is heavily affected by two electrical phenomena—skin effect and proximity effect. However, the mechanical aspects that control the presentation of the edges together are not as easily understood.
Understanding how the mill mechanics affect the high-frequency welding process helps the tube and pipe producer lower costs and increase production rates.
FAQ
1 How can we install the spiral welded pipe roll forming machine?
a When finished the spiral welded pipe roll forming machine, you can with your techinian or one of your worker to our factory inspect the machine. While we run the spiral welded pipe bending machine , we can teach your techinian how install the machine and run the machine.
b If you do not plan to come the inspect the machine running, we can send you the machine running vedios and machine manual which telling how to install the machines.
c We also have a strong machine installing team which ever go to custoer's country install many machines.
If you demand our technian to work with you, our techinian can go to your place teach our worker's .
But, our techinian's accomodations should be arranged by your sides and pay 50 USD/day .
Contact Us
- Cangzhou Zhongtuo International Trade Co., Ltd.
- Contact nameRina Xing
- Phone0086-317-2191158
- Addressyunhe area taida international building Cangzhou,Hebei
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