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Method for casting gearbox shell by using V technology

A technology for gearboxes and casings, which is applied in the field of casting gearbox casings using the V method process, which can solve the problems of low casting yield, high probability of parting surface wrong box, high labor intensity of workers, etc., to overcome many processes, The effect of improving productivity

Inactive Publication Date: 2015-05-20
青岛齐力铸钢有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a method for casting a gearbox housing using the V-method process, which solves the three-box molding manufacturing of the gearbox housing in the prior art, modeling, It takes a long time to polish the box and parting surface, the probability of wrong box on the parting surface is high, the labor intensity of workers is high, and the casting yield is low.

Method used

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Embodiment

[0017] The method of applying the V method process of the present embodiment to cast the gearbox housing may further comprise the steps:

[0018] (1) The sand core is made of furan resin, and the shape of the sand core is a hollow sand core independently developed by the company;

[0019] (2) The dry silica sand V-method casting process is adopted, and the negative pressure is controlled at 0.043Mpa during molding;

[0020] (3) The method of lamination is to heat the mask to high brightness first, and then press the mask at the corner of the mold with a foam template that is regular in shape with the part to make it stick to the mold, and then vacuum to make the mask in the vacuum Adsorption to the mold under action;

[0021] (4) The sprue made of thin-walled steel pipe is used, and the thin-walled steel pipe is used as the exhaust pipe;

[0022] (5) A closed pouring system is adopted, the negative pressure is controlled at 0.06MPa during pouring, and the pouring temperat...

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Abstract

The invention discloses a method for casting a gearbox shell by using a V technology. The gearbox shell comprises an upper model and a lower model, a projecting part A is arranged in the upper model, the surface of the projecting part A is covered with an upper plastic surface film, upper box dry sand is arranged between the top of an upper sand box and the upper plastic surface film, and the upper box dry sand is provided with an upper plastic back film; and the lower model is provided with a projecting part B and a depressed part, the surface of the projecting part B and the depressed part is covered with a lower plastic surface film, lower box dry sand is arranged between the top of a lower sand box and the lower plastic surface film, and the lower box dry sand is provided with a lower plastic back film. The method solves the defects of long molding, box closing and joint surface polishing time, large joint surface fault box probability, high worker labor intensity and low casting yield of present technologies for making the gearbox shell through three box molding.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a method for casting a transmission case by using a V-method process. [0003] Background technique [0004] The production process of casting the transmission case by the V method process belongs to a part of the loader. In the prior art, three-box molding is used to manufacture the gearbox housing. It takes a long time to mold, close the box and polish the parting surface, the probability of wrong box on the parting surface is high, the labor intensity of the workers is high, and the casting yield is low. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a method for casting a gearbox housing using the V-method process, which solves the three-box molding manufacturing of the gearbox housing in the prior art, modeli...

Claims

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Application Information

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IPC IPC(8): B22C9/24B22C9/03B22D18/06
Inventor 刘占向
Owner 青岛齐力铸钢有限公司
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