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Manufacturing method for transformer iron core drawstring

A transformer core and manufacturing method technology, applied in the field of transformers, can solve problems such as low work efficiency, unsatisfactory shaping effect, cumbersome operation, etc., and achieve the effects of improving processing quality, simple and fast processing operation, and simple stroke control

Active Publication Date: 2009-07-22
BAODING TIANWEI BAOBIAN ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional treatment method is to use flame to locally heat the drawstring and then shape it. This method is very cumbersome to operate, the work efficiency is low, and the shaping effect is very unsatisfactory.

Method used

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  • Manufacturing method for transformer iron core drawstring
  • Manufacturing method for transformer iron core drawstring
  • Manufacturing method for transformer iron core drawstring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] see figure 1 1. There is a screw 1 at both ends of the transformer core pull belt, and two parallel steel belts 3 with a distance of 4mm are welded in the middle. The steel belt 3 and the screw 1 are welded together, and the middle seam between the ends of the two steel belts is also Soldering is required. Insert the two steel strips 3 into the gaps at the ends of the screw rods 1 at both ends, and leave a gap between the two steel strips as required by the drawings. After spot installation, welding can be carried out. After welding, the welding between the ends of the two steel strips 3 is The seam reinforcement is required to be 2.5-3.5mm in order to exert pressure on the weld.

[0019] see figure 2 , image 3 , after the iron core drawstring assembly is welded, the distance between the middle parts of the two steel strips 3 will shrink, or even become zero. The backing plate 6 is placed under the top, and the pressure plate 5 is placed on it. The length of the b...

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Abstract

The invention relates to a manufacture method for a transformer core drawstring, which belongs to the technical field of a transformer and is used for solving the welding deformation problem of the core drawstring. The manufacture method has the technical proposal that after two parallel steel belts are installed and welded with screws at two ends, an oil hydraulic press is used for applying pressure to welding lines between the two steel belts so that the space between the two parallel steel belts is reverted to a design value. The manufacture method not only can increase the processing quality of the drawstring, but also causes that the processing operation of the transformer core drawstring is simple and fast, thus greatly increasing the working efficiency.

Description

technical field [0001] The invention relates to a processing method capable of improving the production efficiency of transformer iron core straps, belonging to the technical field of transformers. Background technique [0002] The transformer iron core pull belt is used to clamp the clamp and the iron core. Its basic structure is to set a screw rod at each end of the pull belt, and weld two parallel steel belts with a distance of 4mm in the middle. At present, the production steps of the transformer core pull belt are generally as follows: a gap is processed at the end of each screw; two steel strips are inserted into the gap at the tail of the two ends of the screw, and the drawing requirements are left in the middle of the two steel strips. In order to ensure the gap size, generally a steel plate with the thickness of the gap size is placed between the two steel strips); then spot-fitting and welding are carried out, and the middle seam between the steel strip and the scr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02H01F3/04
Inventor 张海燕康运和于敬方于丽萍郭建霞宋鹏
Owner BAODING TIANWEI BAOBIAN ELECTRICAL