Method for producing automobile axle rear cover by using precoated sand process

A technology for coated sand and automobiles, which is applied to axles, wheels, manufacturing tools, etc., can solve the problems of high residual strength of sand shells, unstable surface quality, low production efficiency, etc., achieve uniform product thickness, shorten the production process, improve The effect of efficiency

Inactive Publication Date: 2015-04-22
湖北谷城县东华机械股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a method for producing the rear cover of automobile axles by using the coated sand process, which solves the problems of low production efficiency, unstable surface quality, deformation, shrinkage cavity, and high residual strength of the sand shell

Method used

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  • Method for producing automobile axle rear cover by using precoated sand process

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Embodiment Construction

[0020] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

[0021] Please refer to figure 1 , the method for producing the automobile axle rear cover with the coated sand process comprises the steps:

[0022] (1) Use the core shooter to manufacture the upper and lower mold shells of the coated sand.

[0023] (2) Fasten and assemble the upper and lower mold shells together to form a casting mold. In this step, the clamping device is used to clamp the upper and lower mold shells to prevent dislocation of the upper and lower mold shells during casting and leakage of pouring liquid from the periphery.

[0024] (3) Inject molten steel into the pouring formwork from the pouring riser of the pouring formwork, allowing the molten steel to cool naturally and form a casting. In this step, the molten steel goes up and down the formwork, and the natural cooling time is 20 minutes.

[0025...

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Abstract

The invention discloses a method for producing an automobile axle rear cover by using a precoated sand process. The method comprises the following steps: (1) producing a precoated sand upper mould shell and a precoated sand lower mould shell; (2) fastening and assembling the upper mould shell and the lower mould shell to form a pouring mould shell; (3) injecting molten steel into the pouring mould shell to form a casting; (4) cleaning sand on the casting by utilizing a shot blasting machine; (5) cleaning the casting by utilizing a grinding machine; (6) placing the casting into a negative pressure impregnation device for impregnation; (7) machining the casting to form a finished product; (8) carrying out a pressure bearing test on the finished product of the automobile axle rear cover by utilizing a pressure testing device; (9) carrying out inspection on the finished product; (10) warehousing the qualified finished product. The method can shorten the production process, save the time and improve the efficiency, the product cannot bulge or deform, and is uniform in thickness without a shrinkage cavity phenomenon, and after pouring, sand on the surface of the automobile axle rear cover can be automatically dispersed, so that the automobile axle rear cover is prevented from being damaged by an external force in a sand cleaning process.

Description

technical field [0001] The invention relates to a method for producing the rear cover of an automobile axle, in particular to a method for producing the rear cover of an automobile axle by using a coated sand process. Background technique [0002] The traditional method of manufacturing auto parts is the investment casting process, which can meet the requirements of most casting products, but it obviously has no advantages for products such as automobile axle rear covers that require high compactness. In the investment casting process, the rear cover of the automobile axle must go through the steps of wax pattern making, welding, shell making, dewaxing, roasting, smelting, pouring, cleaning, heat treatment, machining and pressure testing. The rear cover of the automobile axle will produce many defects, such as: 1) more steps and lower production efficiency; 2) the investment casting process is often affected by factors such as temperature, air humidity, and operating methods...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/02B22C9/22B22C15/24B60B35/12
Inventor 王晓东刘建立朱昊月彭仕军
Owner 湖北谷城县东华机械股份有限公司
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