Bent pipe machining method and bent pipe

Abstract

The invention provides a bent pipe machining method and a bent pipe, and belongs to the technical field of bent pipe machining. The method adopts an eccentric straight pipe and an induction heater. The method comprises the steps that S1, the eccentric straight pipe is mounted on a support table, a to-be-bent section is sleeved with an intermediate frequency induction heating ring, a first pipe section is movably mounted in a guiding assembly, the end of a second pipe section is clamped through a front chuck, and a rear pushing bent chuck clamps the end of the first pipe section and pushes thefirst pipe section to move in the direction of the to-be-bent section; and S2, intermediate frequency current is introduced into the intermediate frequency induction heating ring, the to-be-bent section is heated, when the temperature of the to-be-bent section is increased to a plastic state, the first pipe section is advanced through mechanical thrust, the to-be-bent section is bent, and the bentto-be-bent section is quickly cooled with a coolant. The bent pipe machining method adopts the eccentric straight pipe with the outer diameter being changed, the inner side thickening amount of the machined bent pipe is reduced, and the weight of a pipe system is reduced.

Description

technical field [0001] The invention relates to the technical field of pipe bend processing, in particular to a pipe bend processing method and the pipe bend. Background technique [0002] The traditional pipes are all concentric pipes. After the pipe is bent, the tensile surface becomes thinner and the compression surface thickens, and the thickening is greater than the thinning, especially on the inner side of small radius pipes. From a design point of view, this part of thickening is unnecessary, and excessive thickening will also have a certain impact on the piping system. Contents of the invention [0003] One of the objectives of the present invention is to provide a method for processing a bent pipe, which aims to solve the problem of thinning of the tensile surface and thickening of the compression surface after bending in the prior art, and the amount of thickening is greater than that of the thinning. Quantity problem; [0004] Another object of the present inv...

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Problems solved by technology

[0003] One of the objectives of the present invention is to provide a method for processing a bent pipe, which aims to solve the problems in the prior art that after the pipe is bent, the tensile surface is thinned, the compressed surface is thickened, and the thickening is greater than the thinning. Quantity problem;

[0004] Another object of the present invention is to provide an elbow, which aims to solve the problem of reducing the weight of the piping system caused by the bending method in the prior art

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