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Method for controlling welding deformations of special type motor bedplate

A technology of welding deformation and control method, which is applied in the direction of welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems that cannot be annealed to eliminate welding stress, cannot be used, and cannot be rooted out, etc., to achieve strong innovation and practicability , Eliminate welding stress, simple and strict quality requirements

Inactive Publication Date: 2007-02-21
SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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Problems solved by technology

At present, most of the welding deformation control adopts the method of reserved machining allowance and mechanical processing to meet the coaxiality requirements, but for the motor whose stator core has been assembled in the frame, the method of mechanical processing and annealing cannot be used. The welding stress is eliminated, and the weld seam between the machine base and the upper end is a single-sided weld seam, and the root cannot be cleaned. It is very difficult to require the ultrasonic flaw detection level I to pass after welding.

Method used

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  • Method for controlling welding deformations of special type motor bedplate

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Embodiment Construction

[0018] Such as figure 1 , the welding seam of the upper end ring is divided into eight equal parts along the circumferential direction according to the X and Y cross center lines. Speed ​​symmetrical and synchronous welding.

[0019] The steps of the method for controlling the welding deformation of the special motor frame are as follows:

[0020] (1) Cold-made angle steel bracket, and a machined process flange is installed and welded on the upper end of the bracket;

[0021] (2) Use stainless steel eyebolts to hoist the machine base in the center of the bracket, fix the machine base and the upper end ring after assembly and tack welding firmly through the process flange at the upper end of the bracket, and hang them vertically;

[0022] (3) Draw X and Y cross centerlines on the outer surface of the upper end ring, draw an eighth equal line at the upper end ring weld, mark and install a dial indicator on each cross center line, adjust the dial indicator to 0 bit;

[0023] ...

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Abstract

A method for controlling the weld deformation of special motor base includes such steps as using supporter and technological flange to fix the base of motor, drawing crossed central lines X and Y on the external surface of top end ring, drawing eight-division lines at the weld seam, cleaning with acetone and silk fabric, argon arc welding, abrading the welded seam, color inspecting, and synchronously and symmetrically welding by two welding workers layer by layer while vibration beating for each layer except surface layer.

Description

technical field [0001] This invention relates to a method for controlling welding deformation of a special motor base. Background technique [0002] For the welding of some special motor products, according to the design requirements of the machine base, the machine base and the stator core can only be welded with the upper end ring after installation, and the welding process requirements are also particularly strict, the deformation after welding should not exceed 0.07mm, and the weld seam is not clear In the case of roots, the ultrasonic flaw detection level I is qualified, and the welding stress is eliminated without annealing. At present, most of the welding deformation control adopts the method of reserved machining allowance and mechanical processing to meet the coaxiality requirements, but for the motor whose stator core has been assembled in the frame, the method of mechanical processing and annealing cannot be used. Welding stress is eliminated, and the machine bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/00B23K37/00
Inventor 黄兴富严祥兵
Owner SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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