Processing method for cold bending pipes by medium frequency heating

A processing method and technology of cold-formed pipes, which are applied in induction heating, metal processing equipment, manufacturing tools, etc., can solve the problems of cold-formed equipment that cannot be bent, there are many space bends for boiler connecting pipes, and the pipeline bending process is prolonged. , to achieve good production efficiency, reduce labor intensity of workers, and good heat penetration effect.

Active Publication Date: 2010-01-13
HENAN HUADIAN JINYUAN PIPING
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Problems solved by technology

[0002] With the vigorous development of supercritical and ultra-supercritical power plant units above 600MW, the diameter and wall thickness of boiler connecting pipes continue to increase, and the existing cold bending equipment can no longer be bent. There are many bends in the pipe space, many angles, and are relatively complicated. Due to equipment limitations, the intermediate frequency pipe bender cannot guarantee the processing quality and needs to increase a large number of welds, and for some bends after hot bending, it is necessary to increase the heat treatment process, and the construction period of the pipe bending process Prolonged and significantly increased processing costs

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  • Processing method for cold bending pipes by medium frequency heating

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[0019] The intermediate frequency heating cold bending pipe processing method of the present invention adopts such as figure 1 The processing equipment shown in the figure includes an intermediate frequency heating device 1 and a cold bending machine 2 fixedly connected together, and the outlet 3 of the intermediate frequency heating device 1 is connected to the feeding port 4 of the cold bending machine 2 . The intermediate frequency heating device 1 includes a fixed frame 5, and the fixed frame 5 is provided with an intermediate frequency power supply 6, a capacitor 7, a heating channel 8, and an induction coil 9. Connected by wires, several rollers 10 are arranged on the heating channel 8 . Cold bender 2 comprises frame 11, and frame 11 is provided with rotating shaft 12, boosting roller frame 13 and clamping block 14, and rotating shaft 12 is provided with disc-shaped pipe bending die 15, and boosting roller frame 13 A booster roller 16 is provided on the top, and the pip...

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Abstract

The invention discloses a processing method for cold bending pipes by medium frequency heating, comprising the following steps: firstly, heating the part, which is required to be bent, of a pipeline to certain temperature by adopting the medium frequency heating mode, and then bending the pipeline. The method has the advantages that the design is reasonable, the heating effect is good, the work efficiency is high, the pipeline bending quality is good and the labor intensity of workers is reduced, and the method can provide good productivity benefits for the enterprises.

Description

technical field [0001] The invention belongs to the technical field of bending metal profiles or pipes, and in particular relates to a processing method for intermediate frequency heating cold bending pipes. Background technique [0002] With the vigorous development of supercritical and ultra-supercritical power plant units above 600MW, the diameter and wall thickness of boiler connecting pipes continue to increase, and the existing cold bending equipment can no longer be bent. There are many bends in the pipe space, many angles, and are relatively complicated. Due to equipment limitations, the intermediate frequency pipe bender cannot guarantee the processing quality and needs to increase a large number of welds, and for some bends after hot bending, it is necessary to increase the heat treatment process, and the construction period of the pipe bending process Prolonged and greatly increased processing costs. Contents of the invention [0003] In order to solve the defi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D7/16B21D7/024H05B6/02H05B6/42B21D43/08
Inventor 李国桢牛文献李俊峰
Owner HENAN HUADIAN JINYUAN PIPING
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