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Annealing technology of silicon steel plate for motor

An annealing process, a technology for motor silicon steel, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve problems such as tooth saturation, achieve the effect of improving efficiency, restoring the original magnetic level, and eliminating stress

Inactive Publication Date: 2017-09-01
南通长江电器实业有限公司
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Problems solved by technology

[0008] For the above process, especially for motors with small tooth widths using cold-rolled silicon steel sheets, if the impact of the stamping process on the magnetic conduction of the teeth is not considered in the design, the teeth will be seriously saturated

Method used

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Embodiment Construction

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments.

[0025] A kind of motor silicon steel sheet annealing process disclosed by the present invention specifically comprises the following steps:

[0026] a. Clean the stator and rotor punched silicon steel sheets with grease to ensure that there is no residual grease on the surface;

[0027] b. Put the cleaned punch into the punch annealing oxidation furnace for preliminary heating, and turn on the vacuum pump to evacuate the continuous heating process. The heating temperature of the non-oriented silicon steel sheet is 250±10°C, and the heating temperature of the oriented silicon steel sheet is 400± 10°C;

[0028] c. After preliminary heating for 1.5-2 hours, turn off the vacuum pump and feed hydrogen-nitrogen mixed gas to keep the furnace pressure at 0.01-0.02MPa;

[0029] d. Increase the temperature in the punching annealing and oxid...

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Abstract

The invention discloses an annealing technology of a silicon steel plate for a motor. After early washing is carried out on the grease of a stamped plate, the stamped plate is conveyed into an annealing oxidizing furnace to carry out annealing treatment. By reasonably controlling annealing time and annealing temperature, the stress of the silicon steel plate is eliminated for restoring the original magnetic performance. Therefore, the magnetic conducting performance of a prepared iron core is improved, the efficiency of the prepared motor is increased, the temperature rise of the motor is reduced, and the cost is saved.

Description

technical field [0001] The invention relates to a processing method for a silicon steel sheet for a motor, in particular to an annealing process for a silicon steel sheet for a motor. Background technique [0002] At present, the requirements for high-efficiency and ultra-high-efficiency motors are getting higher and higher, and the design cost of motors is increasing, and users are not easy to accept the increase in costs, and at the same time, global resources are becoming less and less. Moreover, there is a situation where the efficiency of the motor is improved to a certain extent and cannot be improved by design. This requires other ways to improve the efficiency of the motor. To achieve low-cost high-efficiency, ultra-efficient motors. [0003] In the prior art, the motor stamping process is as follows: [0004] 1. Silicon steel sheet blanking; [0005] 2. Punching the stator punching sheet and punching the rotor punching sheet shaft hole and shaft hole keyway at t...

Claims

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Application Information

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IPC IPC(8): C21D1/30C21D1/74C21D9/00
CPCC21D1/30C21D1/74C21D9/0068
Inventor 张翼朱新宇仝进峰方志平
Owner 南通长江电器实业有限公司
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