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A semi-hard machining process for electromagnetic wire

A processing technology and technology of electromagnetic wire, applied in the field of semi-hard processing technology of electromagnetic wire, can solve the problems of unstable semi-hard quality of electromagnetic wire, uneven cross-sectional size of electromagnetic wire conductor, etc., and achieve the effect of ensuring size

Active Publication Date: 2016-09-07
WUXI XIZHOU MAGNET WIRES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides a semi-hard processing process for electromagnetic wires, which can solve the problems of unstable semi-hard quality of electromagnetic wires and electromagnetic wire conductors existing in the existing process of increasing the yield strength of electromagnetic wires by rolling processing. The problem of uneven section size

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] The raw copper rod is processed by the finishing mill through two flat rolling processes to obtain the billet, and then the billet is softened by means of electric current annealing. , Continuous heating is carried out in the oven, wherein the heating of the annealing furnace adopts a three-stage continuous heating method, the heating temperature T1 of the first section is 550°C, the heating temperature T2 of the second section is 530°C, and the heating temperature T3 of the third section is 480°C, the heating temperature of the oven is 240°C, the speed of the billet passing through the annealing furnace and the oven is 8m / min; The universal rolling machine performs universal rolling and shaping treatment on the electromagnetic wire, and then the wire is taken up by the wire take-up machine and packaged to the finished product. After testing, the yield strength of the magnet wire is 310N / mm 2 ; In each flat rolling process, vertical rolling process and universal rollin...

Embodiment 2

[0024] The raw copper rod is processed by a finishing mill to obtain a billet after a flat rolling process, and then the billet is softened by means of electric current annealing. Continuous heating is carried out in the oven, and the heating of the annealing furnace adopts a three-stage continuous heating method. The heating temperature T1 of the first section is 570°C, the heating temperature T2 of the second section is 520°C, and the heating temperature T3 of the third section is 500°C. ℃, the heating temperature of the oven is 240 ℃, the billet passes through the annealing furnace, and the speed in the oven is 5 m / min; The universal rolling machine performs universal rolling and shaping treatment on the electromagnetic wire, and then the wire is taken up by the wire take-up machine and packaged to the finished product. After testing, the yield strength of the magnet wire is 317N / mm 2 ; In each flat rolling process, vertical rolling process and universal rolling shaping pr...

Embodiment 3

[0026] The raw copper rod is processed by the finishing mill through two flat rolling processes to obtain the billet, and then the billet is softened by means of electric current annealing. , Continuous heating is carried out in the oven, wherein the heating of the annealing furnace adopts a three-stage continuous heating method, the heating temperature T1 of the first section is 580°C, the heating temperature T2 of the second section is 550°C, and the heating temperature T3 of the third section is 470°C, the heating temperature of the oven is 240°C, the billet passes through the annealing furnace and the oven at a speed of 10m / min; The universal rolling machine performs universal rolling and shaping treatment on the electromagnetic wire, and then the wire is taken up by the wire take-up machine and packaged to the finished product. After testing, the yield strength of the magnet wire is 323N / mm 2 ; In each flat rolling process, vertical rolling process and universal rolling ...

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Abstract

The invention provides an electromagnetic wire semi-hard processing technology. The problem that an electromagnetic wire processed by means of an existing technology for conducting calendaring treatment on the electromagnetic wire so as to improve the yield strength of the electromagnetic wire is unstable in semi-hard quality and the cross-sectional dimension of an electromagnetic wire conductor is uneven can be solved. The electromagnetic wire semi-hard processing technology is characterized by comprising the following processing steps of firstly conducting flat-rolling processing on a raw material copper bar by means of a finishing mill to form a blank, then softening the blank in a current annealing mode, sequentially conducting flat-rolling processing and vertical-rolling processing on the softened blank by means of the finishing mill to obtain the electromagnetic wire, conducting universal-milling shape-correction treatment on the electromagnetic wire by means of a universal-milling machine, using a take-up machine to take up the electromagnetic wire, and packaging the electromagnetic wire to form a finished product.

Description

technical field [0001] The invention relates to the field of electromagnetic wire production technology, in particular to a semi-hard processing technology for electromagnetic wire. Background technique [0002] Large-capacity transformers require the winding coil to have a certain rigidity in order to increase the anti-instantaneous high-current impact performance of the winding coil. The hard requirement is to increase the yield strength requirement. Usually, the yield strength range of the electromagnetic wire is required to be 100N / mm 2 ~260N / mm 2 . At present, the high yield strength means the yield strength is 300 N / mm 2 The semi-rigid wire is more and more widely used. In order to control the partial discharge problem of the transformer, it is usually required that the three-phase resistance unbalance be as small as possible, generally controlled at ≤0.65%. To meet this requirement, the size uniformity of the electromagnetic wire must be well controlled, and The e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00B21B1/16
Inventor 曹永义武强周里
Owner WUXI XIZHOU MAGNET WIRES
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