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Method for manufacturing hub motor shell

A technology for in-wheel motors and casings, which is applied in the field of casing preparation, can solve the problems of large process and machining allowance, high overall cost and high equipment investment, and achieves the effects of good performance indicators, fewer defects, and shortened process flow.

Active Publication Date: 2012-03-21
无锡天宝电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has made some progress compared with the method of cutting and welding seamless steel pipes, the centrifugal casting process used in it requires a series of equipment such as centrifugal casting centrifuges and auxiliary equipment, and the equipment investment is high, and it still requires The steel cylinder section is cut into a steel ring, and then finished, so the process and machining allowance are still large, resulting in a high overall cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing the shell of an in-wheel motor, comprising the steps of:

[0017] 1) Smelting: The steel for the shell is smelted in a converter or an electric furnace, refined outside the furnace, and the composition is adjusted. After meeting the requirements, it is transferred to a tundish for standing;

[0018] 2) Prepare the mold: Design the outer mold and mold core according to the shell structure of the hub motor, then paint the surface of the outer mold and mold core, and then raise the temperature to 200°C. After the paint is dried, continue to heat up to the preheating temperature of 450°C ;

[0019] 3) Die-casting: Adjustment step 1) The temperature of the smelted molten steel is 1480°C, pour it quantitatively into the die-casting machine, then use the punch to fill the molten steel into the mold, adjust the die-casting parameters to complete the die-casting; then demould, Obtain the die-casting billet of the motor shell; wherein, the die-casting para...

Embodiment 2

[0022] A method for preparing the shell of an in-wheel motor, comprising the steps of:

[0023] 1) Smelting: The steel for the shell is smelted in a converter or an electric furnace, refined outside the furnace, and the composition is adjusted. After meeting the requirements, it is transferred to a tundish for standing;

[0024] 2) Prepare the mold: Design the outer mold and mold core according to the shell structure of the hub motor, then paint the surface of the outer mold and mold core, and then raise the temperature to 220°C. After the paint is dried, continue to heat up to the preheating temperature of 420°C ;

[0025] 3) Die-casting: Adjustment step 1) The temperature of the smelted molten steel is 1520°C, pour it quantitatively into the die-casting machine, then use the punch to fill the molten steel into the mold, adjust the die-casting parameters to complete the die-casting; then demould, Obtain the die-casting billet of the motor shell; wherein, the die-casting para...

Embodiment 3

[0028] A method for preparing the shell of an in-wheel motor, comprising the steps of:

[0029] 1) Smelting: The steel for the shell is smelted in a converter or an electric furnace, refined outside the furnace, and the composition is adjusted. After meeting the requirements, it is transferred to a tundish for standing;

[0030] 2) Prepare the mould: design the outer mold and mold core according to the shell structure of the hub motor, then paint the surface of the outer mold and mold core, and then raise the temperature to 210°C. After the paint is dried, continue to heat up to the preheating temperature of 435°C ;

[0031] 3) Die-casting: Adjustment step 1) The temperature of the smelted molten steel is 1500°C, pour it quantitatively into the die-casting machine, then use the punch to fill the molten steel into the mold, adjust the die-casting parameters to complete the die-casting; then demould, Obtain the die-casting billet of the motor shell; wherein, the die-casting par...

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Abstract

The invention discloses a method for manufacturing a hub motor shell, and the method comprises the following steps of: 1) smelting: smelting steel used for the shell by adopting a converter or an electric furnace, carrying out external refining, adjusting compositions, and transferring the steel into a pouring basket to be subjected to standing after requirements are met; 2) preparing a mould: designing an external mould and a mould core according to the shell structure of the hub motor, then brushing a painting on the surfaces of the external mould and the mould core, then heating to 200-220 DEG C and continuously heating to a preheating temperature of 420-450 DEG C after the painting is dried; 3) die casting: adjusting temperature of molten steel smelted in the step 1) to be 1480-1520 DEG C, quantitatively pouring the molten steel into a die casting machine, then filling the molten steel into the mould by utilizing a punch, adjusting die casting parameters to complete die casting and then demoulding to obtain a die casting blank of the motor shell; and 4) machining: carrying out local machining on the two ends of the shell until the two ends meet design sizes.

Description

technical field [0001] The invention relates to a component of a motor, in particular to a method for preparing a shell of an in-wheel motor. Background technique [0002] The most primitive wheel hub motor housing is made of seamless steel pipe segments cut into steel rings. Due to the high difficulty of making seamless steel pipes, various equipment and complicated processes, the cost of seamless steel pipes is particularly high. In order to reduce costs, the company replaces the steel rings welded with flat steel bars. Therefore, the hub motor shells on the market are generally finished with steel rings welded with flat steel bars. However, steel rings welded with flat steel bars are produced The ring process is also very complicated. It must be identified by the material of the steel. After high-temperature melting, it is cast into a billet. The billet is then hot-rolled into a flat steel bar. The two ends of the two ends are connected by electric welding, and finally t...

Claims

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Application Information

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IPC IPC(8): H02K5/00H02K5/06H02K7/14B22D17/00
Inventor 刘裕康
Owner 无锡天宝电机有限公司
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