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Manufacturing technology of gearbox body casting

A manufacturing process and gear box technology, applied in the direction of manufacturing tools, molds, mold components, etc., to achieve the effect of reducing the occurrence of pinholes in castings and compacting the structure of castings

Inactive Publication Date: 2017-11-21
江苏雷科德轨道交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a manufacturing process for gearbox casing castings, aiming at solving the technical problem of improving the quality of gearbox casing castings

Method used

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  • Manufacturing technology of gearbox body casting
  • Manufacturing technology of gearbox body casting

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Embodiment 1

[0044] Such as figure 1 As shown, the present embodiment provides a manufacturing process of a gearbox casing casting, including:

[0045] Step S1, making sand cores, using refractory mud-coated sand combined with sand core box molds to make sand cores for gearbox casings, and baking them for later use.

[0046] In step S2, casting liquid is made, and the cast alloy material used is ZAlSi7MgA.

[0047] Step S3, casting mold treatment. The casting mold treatment is to preheat the casting outer mold, and the preheating temperature is controlled within the range of 250-280°C; the sand core prepared in step S1 is assembled in the inner cavity of the casting mold to form a casting mold.

[0048] Step S4, pouring in a box, pouring the pouring solution prepared in step S2 into the casting mold prepared in step S3, controlling the pouring temperature to 710-730°C, and the pouring speed to 0.6-0.8m / s.

[0049] Step S5, unpacking and cleaning the casting, including cutting, rough grindi...

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Abstract

The invention provides a manufacturing technology of a gearbox body casting, and belongs to the technical field of metal casting. The manufacturing method comprises the following steps: S1, sand core manufacturing, specifically, manufacturing the sand core of a gearbox body by combining refractory mortar coated sand with a sand core box mold, and baking the sand core for later use; S2, casting liquid preparation, wherein the adopted casting alloy material is ZAlSi7MgA; S3, casting mold processing, specifically, the casting mold processing is preheating a casting outer mold and assembling the sand core prepared in the step S1 in the inner cavity of the casting mould to form a casting model; S4, mold closing and casting, specifically, pouring the casting liquid prepared in the step S2 into the casting model prepared in the step S3; and S5, mold opening and casting cleaning, wherein the mold opening and casting cleaning comprise the steps of cutting, rough grinding and fine grinding. According to the manufacturing technology of gearbox body casting, through reasonable designed technology parameters, a casting structure is compact, and the occurrence of casting pin holes is reduced.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a manufacturing process of a gear case casting. Background technique [0002] With the development of high-speed railway transportation, countries all over the world have invested a lot of manpower and material resources in research on the lightweight of high-speed trains. In recent years, in order to achieve the purpose of reducing the weight of the vehicle, foreign countries have successfully used high-strength cast aluminum alloys to replace the traditional cast iron alloys for the axle gearboxes and motor gearboxes of high-speed locomotives. The technical requirements and manufacturing process put forward higher requirements, in which the shape of the motor gearbox box is complex, the heat joints are spread in many places, the appearance quality, internal quality and dimensional accuracy of the casting are high, and it has the typical characteristics of a large high-spe...

Claims

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Application Information

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IPC IPC(8): B22C9/10B22C9/08B22C9/02B22C9/24B22C3/00C22C21/04C22C1/02
CPCB22C3/00B22C9/02B22C9/088B22C9/10B22C9/24C22C1/026C22C21/04
Inventor 陈永雷董永
Owner 江苏雷科德轨道交通科技有限公司
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