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Method for casting end cap of transmission end of traction motor on subway locomotive

A technology for traction motors and locomotives, which is applied to casting molding equipment, casting molds, and casting mold components. It can solve the problems of large amount of self-setting resin, slow cooling speed of castings, and large machining allowance of castings, and achieves less resin sand. , stable production process and reduced machining cost

Inactive Publication Date: 2015-12-02
侯马市晋烽机械铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process has the following defects in the process of preparation: due to the slow cooling of molten iron in the no-hardening sand process, shrinkage porosity, shrinkage cavities, and cracks are generated inside the casting, and the quality is unstable; the cooling speed of the casting is slow, the internal structure is not compact, and the spheroidization level Low (level 3), the material is unstable; the appearance of the casting is rough and poor; the machining allowance of the casting is large, the material is wasted, and the machining cost is high; the production process is complicated, the labor intensity of the workers is high, and the production efficiency is low; Large dosage, resulting in high production cost

Method used

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  • Method for casting end cap of transmission end of traction motor on subway locomotive
  • Method for casting end cap of transmission end of traction motor on subway locomotive
  • Method for casting end cap of transmission end of traction motor on subway locomotive

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A casting method for the transmission end cover of the traction motor on a subway locomotive. The casting method adopts an iron mold sand-covering process for casting. The specific steps are as follows: (1) Design a set that is completely consistent with the shape of the transmission end cover of the traction motor on a subway locomotive. The model is used as a master mold, and the master mold includes a tooling mold for designing and manufacturing the transmission end cover of the traction motor on the subway locomotive, a pouring system, a heating plate and a base. Such as figure 2 , Figure 6 , Figure 7 As shown, the upper mold plate 3 is provided with a transmission end cover upper mold 1, and the transmission end cover upper mold 1 is provided with a cavity for the external structure of the transmission end cover. Such as image 3 , Figure 8 , Figure 9 As shown, the lower mold plate 4 is provided with a transmission end cover lower mold 2, and the transmis...

Embodiment 2

[0040] A casting method for the transmission end cover of the traction motor on a subway locomotive. The casting method adopts an iron mold sand-covering process for casting. The specific steps are as follows: (1) Design a set that is completely consistent with the shape of the transmission end cover of the traction motor on a subway locomotive. The model is used as a master mold, and the master mold includes a tooling mold for designing and manufacturing the transmission end cover of the traction motor on the subway locomotive, a pouring system, a heating plate and a base. Such as figure 2 , Figure 6 , Figure 7 As shown, the upper mold plate 3 is provided with a transmission end cover upper mold 1, and the transmission end cover upper mold 1 is provided with a cavity for the external structure of the transmission end cover. Such as image 3 , Figure 8 , Figure 9 As shown, the lower mold plate 4 is provided with a transmission end cover lower mold 2, and the transmis...

Embodiment 3

[0043] A casting method for the transmission end cover of the traction motor on a subway locomotive. The casting method adopts an iron mold sand-covering process for casting. The specific steps are as follows: (1) Design a set that is completely consistent with the shape of the transmission end cover of the traction motor on a subway locomotive. The model is used as a master mold, and the master mold includes a tooling mold for designing and manufacturing the transmission end cover of the traction motor on the subway locomotive, a pouring system, a heating plate and a base. Such as figure 2 , Figure 6 , Figure 7 As shown, the upper mold plate 3 is provided with a transmission end cover upper mold 1, and the transmission end cover upper mold 1 is provided with a cavity for the external structure of the transmission end cover. Such as image 3 , Figure 8 , Figure 9 As shown, the lower mold plate 4 is provided with a transmission end cover lower mold 2, and the transmis...

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Abstract

The invention relates to a method for casting an end cap of a transmission end of a traction motor on a subway locomotive. According to the method, a sand faced permanent iron molding technology is adopted. Through the sand faced permanent iron molding technology, a cavity which is in the shape of a complete end cap of the transmission end is obtained, and four cores are fed to directly cast a part of the end cap of the transmission end, appearance and inner quality of castings are improved effectively, scrappage of the castings is reduced, weight of the castings is reduced by 16%, production efficiency is improved greatly, and a large amount of time and cost of labor and equipment are saved. By the method, the cost is reduced by 28%. Moreover, the method is simple and practical, obvious in economic benefit, wide in market prospect and suitable for most of enterprises.

Description

technical field [0001] The invention belongs to the field of casting, and in particular relates to a method for casting a traction electric transmission end cover on a subway locomotive by adopting an iron mold sand-covering process. Background technique [0002] In the existing industrial production, self-hardening sand molding technology is used to produce transmission end cover castings. The process has the following defects in the process of preparation: due to the slow cooling of molten iron in the no-hardening sand process, shrinkage porosity, shrinkage cavities, and cracks are generated inside the casting, and the quality is unstable; the cooling speed of the casting is slow, the internal structure is not compact, and the spheroidization level Low (level 3), the material is unstable; the appearance of the casting is rough and poor; the machining allowance of the casting is large, the material is wasted, and the machining cost is high; the production process is complic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/22B22D1/00C22C37/10
Inventor 温文林刘春晖冯奇宏杨永杰张永芳许沛沃
Owner 侯马市晋烽机械铸造有限公司
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