Description
The 3-in-1 H beam assembly welding straightening line has a combined function of H beam, T beam assembly, welding and flange slab deformation straightening after welding. Thus it can accurately and rapidly realize H beam and T beam production. It has the following advantages: simple operation, less labor cost and small covering area.

This line has two optional welding process for you to choose according to the structural steel plate thickness to be welded:
One is single arc double wire welding of which the deposition rate is 40% higher than general single wire submerged arc welding. So it is especially suitable for structural steel plate welding of which the thickness is less than 20mm.
Another is single arc single wire welding. It is suitable for wide range of plate thickness.

Main structure and working principle
The 3-in-1 H beam assembly welding straightening line mainly consists of input roller conveyor, centering device, output roller conveyor, base machine, hydraulic system, electric control box etc. The base machine consists of left and right column, flange slab, web clamping device, portal frame, up pinch device, auxiliary web clamping device, top roller device, left and right welding head, flux recycle system, straightening unit etc.

The assembling and positioning of flange slab and web can be realized by two steps: the automatic centering device on the input roller conveyor can carry out pre-positioning of flange slab and web. When the flange slab and web to be assembled are respectively transported to the positioning block of the base machine, the flange slab and web will be further clamped by the specific positioning and clamping device on the base machine.

The portal frame of the base machine is equipped with pinch device of which the press roller and the main drive roller is basically on the same vertical plane. When the press roller is pressing down, the bottom side of the web will be pressed firmly on the flange slab. There is a convex piece at the front edge of the press roller, under the flange slab. If the flange slab is not flat, this convex piece can be started to ensure that the assembling and welding zone fit closely. Finally, the base machine drive device is started, the main motor will make the driving roller rotate by the cycloid reducer and universal joint, thus realizing workpiece movement. By matching with welding head on both sides of the box and straightening unit in front of the base machine, it can accomplish structural steel assembly, welding and flange slab deformation straightening after welding synchronously. The frequency speed control device can realize variable speed movement of the workpiece.

Jinfeng introduction
Jinfeng Welding & Cutting Machinery Manufacture Co., Ltd has mechanical department, electrical department and software department. There are 80 people in the team in total. We also hire senior engineers from ESAB to carry out joint development and design of various structural steel H beam production lines, so that we have technical guarantee.

Jinfeng has strong production capacity: we have 13 imported CNC machining centers, 3 4mx12m large machining centers, so that the annual output of various structural steel production line is 100.

All the members of the sales team have more than 10 years of experience in service, so that they can provide customers with various consultation and services in time. Besides, Jinfeng is equipped with an after-sales service team of 30 employees, so that they can provide 24-hour after-sales service all year round.