Blueing treatment process for semi-processed electrical steel rotor or stator

A semi-process electrical steel, bluing treatment technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., to achieve the effects of increased magnetic induction intensity, reduced iron loss, and low production cost

Inactive Publication Date: 2013-04-24
HUNAN XUEBAO ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the development trend of semi-process non-oriented electrical steel to replace full-process electrical stee

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] In Example 1, the process flow of the present invention includes the following steps: burning oil → decarburization and stress relief annealing → bluing, and finally performing electromagnetic performance inspection, bluing layer appearance and thickness inspection.

[0014] The oil burning process is: heating the stator and rotor punching pieces that enter the oil burning furnace to a process temperature of 380-450°C to burn off the punching lubricating oil on the punching piece, purifying the surface finish of the punching piece, and avoiding the phenomenon of sticking of the punching piece. Ensure that the punch has the best insulation performance. The heating of the oil burning furnace is divided into two parts. One is to use the high temperature gas generated by the DX gas generator to heat the air through a heat exchanger, and then the heated air is sent to the bottom of the oil burning furnace through the insulation pipe; the second is to arrange electric heating rad...

Example Embodiment

[0021] Embodiment 2, the processing process of the present invention includes: the mother roll is divided into strips with a width of 294.00 (-0.10 / -0.20) mm on the slitting machine, and continuous punching on a high-speed punching machine to produce motor rotor and stator fragments , Bundle these rotors and stator pieces together, stator: 100 pieces / string (10.03kg), rotor: 150 pieces / string (9.90kg), note that the burr directions and marking openings of all punching pieces must be consistent, including annealing treatment And finally packed in a carton. The bundled punches need to be stacked neatly up and down in the annealing turnover iron box, and the inner holes of the punches are smooth up and down. Put it on the loading table of the continuous annealing furnace, first enter the oil burning furnace, burn off the stamping lubricating oil at 400°C, purify the surface of the punching sheet, improve the smoothness, and avoid the phenomenon of punching sheet sticking. Then in...

Example Embodiment

[0023] Example 3, the processing process of the present invention includes: the mother roll is divided into strips with a width of 332.00 (0 / -0.10) mm on a slitting machine, and continuous punching on a high-speed punching machine to produce motor rotor and stator fragments. Bundle these rotor and stator loose pieces, stator: 100 pieces / string (14kg), rotor: 150 pieces / string (14kg), note that the burr directions and marking openings of all punching pieces must be consistent, including annealing treatment and final assembly Carton. The bundled punches need to be stacked neatly up and down in the annealing turnover iron box, and the inner holes of the punches are smooth up and down. Put it on the loading table of the continuous annealing furnace, first enter the oil burning furnace, burn off the stamping lubricating oil at 400℃, purify the surface of the punching sheet, improve the smoothness, and avoid the phenomenon of punching sheet sticking. Then under a controlled atmosphe...

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Abstract

The invention relates to a blueing treatment process for a semi-processed electrical steel rotor or stator, which is mainly used for solving the technical problems of high energy consumption, great pollution, high cost and the like of the prior art. The key points of the technical scheme are as follows: semi-processed electric steel is adopted for preparing a rotor or stator punched sheet, then oil firing, decarbonization, distressing and annealing are performed on the rotor or stator punched sheet, and blueing treatment is finally performed to prepare a finished product. The blueing treatment process is mainly used in production processes of rotor or stator iron cores of motors.

Description

technical field [0001] The invention relates to a production process for a motor rotor or a stator, in particular to a production process for producing a motor rotor and a stator with semi-process electrical steel. Background technique [0002] Energy saving and emission reduction, and the development of new energy will be the general trend of my country's economic development. Semi-process non-oriented electrical steel is produced by steel mills that meet the performance requirements of punching sheets, and the user finally anneals after punching to form electrical steel that uses magnetism. Actively develop directional products in the world, and most of the motor cores in developed countries such as Europe, America and North America use semi-process products. After the semi-process cold-rolled electrical steel is annealed by the user, the performance is greatly improved; 20~40% of the silicon steel sheet does not participate in heat treatment, which saves energy; and the blu...

Claims

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Application Information

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IPC IPC(8): C23F17/00C21D1/26C21D1/74C23C8/18
Inventor 谭亮赵玉琴
Owner HUNAN XUEBAO ELECTRIC APPLIANCE
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