Welded pipe forming process:

Welded pipe forming process:

Welded pipe forming process, the welding machine composition form and sizing roller design and adjustment method will directly affect the welding quality of the wheat from the chaff. The traditional forming process for roll forming technology, has a radius of single, double radius; W inflection pass system, the method of forming plus two high, three or four roller roller, roller pressing roller, two rollers or four rollers sizing to guarantee the forming quality. This traditional roll forming technology, mostly used for diameter less than 114 ㎜ welded pipe units. America's line of roll forming process, the steel union CTA forming technology, Japan once FF or popular titles include FFX flexible forming technology, etc., after forming of the joint shape and good surface has good quality, suitable for welded pipe unit specification is wider. Various forming process technology, have different advantages and disadvantages, suitable for different conditions, according to the product outline, the purpose is to be considered in the equipment selection, in order to choose different forming technology.

In order to reduce the elastic deformation, the deformation of precision welded pipe unit process in time are better than common welding pipe increased 2 ~ 3 times. On deformation arrangement, should reduce initial deformation Angle, ensure the stability of the nip, curved Angle between the appropriate increase, the rear part of the deformation decrease and increase the deformation path is not only reduce the deformation force, also can make the strip has the opportunity to release the surface stress, surface gradient of stress increase slowly, can avoid the crack. In the process of adjustment, first of all, should guarantee the vertical centerline of unity, for different center as basis, looking for accurate positioning and middle size, in a horizontal position, should be arranged according to the process, form the mountain line (down) flat straight line, not a curve. Before didn't wear a belt, you should adjust the groove shape of each frame, measure the size for different, guarantee the stability of the product into the frame. In adjustment to equilibrium force, can not be forced deformation on a rack, ensure uniform ascending Angle stability change.

Precision welded pipe production, control and adjust the good welded pipe units forming and sizing stand equipment accumulated error and roll bounce rate is older of welded pipe units can also be the key to the production of precision welded pipe.