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Convex type electric generator casing group welding technology

A technology for generators and casings, applied in arc welding equipment, welding media, manufacturing tools, etc., can solve problems such as failure to meet the precision requirements of box-type casings, save equipment and process equipment, simple process, and save machining The effect of fees

Active Publication Date: 2007-07-18
SHANDONG QILU ELECTRIC MOTOR MFG +1
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Therefore, the original welding process cannot meet the accuracy requirements of the current box-type casing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Welding process of the present invention adopts horizontal upright, assembly welding process from bottom to top, and its steps are:

[0041] 1. Cutting

[0042] Heat treatment of the steel plate: use a large 11-roll flat machine to level the steel plate and eliminate part of the stress at the same time; carry out sandblasting and derusting treatment on the steel plate; strictly cut the size and geometry of the material: reserve process ribs for semi-circular parts, form a closed form. On the one hand, it can reduce thermal deformation; on the other hand, it increases the rigidity of parts and facilitates assembly; adopts CNC flame cutting: reserve a certain amount of shrinkage (1 ~ 2mm), so that the thermal deformation of cutting can be basically controlled; adjust the cutting specification, so that the cutting Reach the B-level standard (JB / T10045.3-1999); the upper outer cover plate is firstly cut separately, rolled into shape, and then welded together; the upper and...

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Abstract

The present invention discloses a convex power-generator shell assembly welding process. Said process includes the following steps: (1), blanking; (2), adopting horizontal upright from-bottom-to-top mode to make assembly; (3), welding, utilizing CO2 gas shielded welding, adopting multi-layer multi-bead welding and symmetrical welding mode to make welding; (4), restriking; (5), utilizing vibration ageing mode to make stress treatment; and (6), sandblasting and forming the invented product.

Description

technical field [0001] The invention relates to a welding process, in particular to a welding process for assembly of a convex generator casing. Background technique [0002] At present, according to the original process method, the deformation error of the casing after welding is relatively large, generally between 3 and 6mm, which must be guaranteed by the process method of mechanical processing. In particular, the accuracy of the inner hole and the supporting ribs is 4-6 off the center due to the deformation caused by welding, the verticality error of the supporting ribs is about 2mm, and the flatness error of the two ends of the wall is 3-4mm. The deformation of these parts cannot be corrected by flame and non-processing methods, so it is necessary to process about 5mm of the two ends of the wall. Therefore, the original welding process cannot meet the precision requirements of the current box-type casing. Contents of the invention [0003] The purpose of the present...

Claims

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Application Information

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IPC IPC(8): B23P23/04B23K9/16B23K35/38B21D1/00C21D10/00
Inventor 闫方臣李洪岭王明彬李振明郭健尚晓峰任鸣
Owner SHANDONG QILU ELECTRIC MOTOR MFG
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