Hydraulic Induction Hot Pipe Bending Machine

The intermediate frequency pipe bending machine uses intermediate frequency electric induction heating to bend

the workpiece under the condition of local heating. Compared with the general cold pipe bender, not only does

not need a complete set of special molds, but the machine tool volume also only accounts for 1/3 to 1/2 of the

cold pipe bender of the same specification. Intermediate frequency hot bending process is the most economical

and effective one of the existing pipe bending processes.
The process of intermediate frequency pipe bending is to put an induction ring on the part to be bent of the

steel pipe, hold the pipe head with a mechanical swing arm, and heat the steel pipe with an intermediate

frequency current in the induction ring. It is propelled by mechanical thrust and bent, and the bent steel pipe

part is quickly cooled with a coolant, so that the bent pipe is continuously bent while heating, pushing,

bending and cooling.

1) This process can avoid the unevenness of the wall thickness of the curved pipe caused by the thinning of the

convex edge of the pipe wall and the thickening of the concave edge of the pipe wall during the traditional

pipe bending process.
2) This process can be used to produce small-radius (Ra D) and thin-wall (t / Da 0.015) 180 elbows with uniform

wall thickness, which cannot be achieved by other pipe bending processes.
3) If the design of various process parameters is reasonable, this process can ensure that the wall thickness

of each part during the bending process is always the same, that is, it is always equal to the thickness of the

straight tube wall before deformation.
4) This process can be used on the same horn mandrel to push the bends of 45 A , 90 A , 180 A and other bends

with the same caliber at one time, with high production efficiency.