Casting process for square shell of buffer of high-speed railway vehicle

A technology of high-speed railway and casting technology, which is applied in the field of metal casting, and can solve the problems that the quality and technical requirements of the buffer square box parts cannot be met.

Inactive Publication Date: 2014-01-01
TIANJIN JINPU RAIL TRAFFIC EQUIP PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, the quality and technical requirements of the buffer

Method used

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  • Casting process for square shell of buffer of high-speed railway vehicle
  • Casting process for square shell of buffer of high-speed railway vehicle
  • Casting process for square shell of buffer of high-speed railway vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0031] Process method of the present invention:

[0032] A high-speed railway vehicle buffer square box casting process method,

[0033] 1. Shell core

[0034] Phenolic resin-coated sand has high strength, long storage time, and is not easy to pulverize, which is beneficial to ensure the dimensional accuracy of castings and prevent the occurrence of sand holes in castings. Rinsing paint can also improve the surface finish of castings. At present, it is a relatively advanced modeling core making square hair in China. K87 core shooter for core making, with high production efficiency and reliable performance. After the core is made, it is bonded with quick gel, rinsed with paint, and dried in an electric kiln at 180-200°C for 1-2 hours before use.

[0035] 2. Shape

[0036] The sand mold of the outer shell of the square box adopts the process of carbon dioxide blowing Ecolotec650 resin surface and back sand. First add Ecolotec650 resin sand to the sand box and compact it. T...

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Abstract

The invention provides a casting process for a square shell of the buffer of a high-speed railway vehicle. According to the process, a casting system, risers, chills, molding and core-making methods and each technological parameter are optimized, the principles of progressive solidification are followed, so internal compactness of a casting is improved, cracks are reduced, surface quality of a cast blank is improved, dimensional precision is better controlled, and a good effect is obtained. Detection is carried out according to American inspection standard ASTME-446, and five surfaces all reaches grade 1 to 2 in radiographic inspection.

Description

technical field [0001] The invention belongs to a metal casting method, in particular to a casting process method for a buffer square box of a high-speed railway vehicle. Using advanced, green and environmentally friendly materials, combined with leading casting techniques. technical background [0002] The buffer square box of the high-speed railway vehicle is a key part of the buffer. The piece is subject to enormous impact and friction over many years. Therefore, the internal quality requirements of castings are very high, and the internal density, pores, and slag inclusions are strictly controlled. Magnetic particle inspection is to be performed on all areas of the casting. [0003] The box body is a kind of box body of the friction buffer, its structure is relatively complicated, and the technical standard requirements are high. The production difficulty index is significantly higher than that of similar products. [0004] 1. Box structure: the box length is 321.3+...

Claims

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Application Information

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IPC IPC(8): B22C9/02B22C9/10B22C9/08B22C9/12
Inventor 鲁宗元岳峻岭姚振鹏王彦明王耕环薛平田同卫
Owner TIANJIN JINPU RAIL TRAFFIC EQUIP PARTS
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