Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for manufacturing pressboard for rail wagon

A manufacturing method and technology of railway wagons, which are applied in the field of pressure plate manufacturing, can solve problems such as poor quality of pressure plates, and achieve the effects of less raw material consumption, beautiful surface and high quality

Inactive Publication Date: 2012-05-30
XI AN RAILWAY TRANSPORTATION EQUIP
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for manufacturing a pressing plate for railway wagons, which adopts the process method of die forging, and the quality of the pressing plate after forming is high, which solves the technical problem of poor quality of the existing pressing plate in the background technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing pressboard for rail wagon
  • Method for manufacturing pressboard for rail wagon
  • Method for manufacturing pressboard for rail wagon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention has mainly taken measures in the following aspects:

[0037] (1) According to the shape of the accessories, open die forging is adopted, and the mold does not have a flash groove, which is not only beneficial to the forming of the accessories, but also more conducive to the processing and maintenance of the mold.

[0038] (2) The mold adopts an insert structure, the module is made of 5CrNiMo material, and the heat treatment is HBC42-46.

[0039] (3) The mold is connected with a dovetail groove and a general mold base, see figure 2 .

[0040] (4) In order to ensure the strength and fullness of the characters after the accessories are formed, compensation should be given during the cavity design, that is, the depth direction should be increased by 0.75-1.5mm, preferably 1mm.

[0041] The double-hook shot blasting finishing machine is used for surface treatment of forgings. The shot blasting finishing machine has the advantages of high productivity...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for manufacturing a pressboard for a rail wagon, which comprises the following steps of blanking, heating, forging, and blasting to solve the technical problem of low quality of the conventional pressboard. The pressboard is good in surface molding and good in appearance quality, and defects such as air holes, shrinkage cavities, shrinkage porosity, sand inclusion and the like of a cast structure are avoided. A forging die designed and improved by the method does not require blanking and pre-forging, and is high in efficiency, good in quality, and low in consumption of raw materials.

Description

technical field [0001] The invention relates to a method for manufacturing a pressing plate, in particular to a method for manufacturing a pressing plate for railway wagons. Background technique [0002] The pressure plate is an important part of the railway freight car. It is mainly the main part of the upper and lower connection structure between the tank body and the end of the bottom frame. At the same time, the pressure plate can prevent the lateral movement of the tank body during operation. The pressing plate itself has high quality requirements. The manufacturing method of existing railway wagon pressing plate is the method for casting molding, and what pressing plate casting adopted is sand mold casting, i.e. water glass sand carbon dioxide hardening process. [0003] It has the following main disadvantages: [0004] The surface is poorly formed, the appearance quality is poor, and there are many defects such as pores, shrinkage cavities, and shrinkage porosity. T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B21K7/12B21J1/06B21J13/02B21J17/00
Inventor 付丽伟范文革赖育群张舒王飞夏浩
Owner XI AN RAILWAY TRANSPORTATION EQUIP