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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 steel is forming. How to efficiently carry out bluing treatment has encountered many difficulties in practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0014] The oil-burning process is: heating the stator and rotor punches entering the oil-burning furnace to a process temperature of 380-450°C, burning off the punching lubricating oil on the punches, purifying the surface finish of the punches, and avoiding the sticking of the punches. Guarantee that the punching sheet 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 the heat exchanger, and then send the heated air to the bottom of the oil-burning furnace through the insulation pipe; the other is to arrange the electric heating radiation on the side wall. The heat pipe...

Embodiment 2

[0021] Embodiment 2, the processing technology of the present invention comprises: parent roll is divided into the strip material that width is 294.00 (-0.10 / -0.20) mm on the slitting machine, punches sheet continuously on high-speed punching machine, produces the rotor for motor, stator loose sheet , Bundle these loose pieces of rotor and stator, stator: 100 pieces / string (10.03kg), rotor: 150 pieces / string (9.90kg), note that the burr directions and marking ports of all punched pieces must be consistent, including annealing treatment And finally packed in cartons. 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 unobstructed. Put it on the feeding 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. T...

Embodiment 3

[0023] Embodiment 3, the processing technology of the present invention comprises: parent roll is divided into the strip material that width is 332.00 (0 / -0.10) mm on the slitting machine, punches sheet continuously on high-speed punching machine, produces rotor for motor, stator loose sheet, Bundle these rotor and stator loose pieces, stator: 100 pieces / string (14kg), rotor: 150 pieces / string (14kg), note that the burr direction and marking opening 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 unobstructed. Put it on the feeding 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, under the cont...

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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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