Superplastic forming die for aluminum alloy coating parts for railway vehicles and forming method for superplastic forming die

A technology for superplastic forming and rail vehicles, applied in the field of superplastic forming molds and their forming, can solve the problems of low production efficiency and high production cost, and achieve the effects of simple structure, improved production efficiency and reduced cost

Inactive Publication Date: 2013-05-01
王国峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low production efficiency and high production cost in the existing aluminum a

Method used

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  • Superplastic forming die for aluminum alloy coating parts for railway vehicles and forming method for superplastic forming die
  • Superplastic forming die for aluminum alloy coating parts for railway vehicles and forming method for superplastic forming die

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Specific implementation mode 1: Combination figure 1 with figure 2 To explain this embodiment, the superplastic forming mold for aluminum alloy covering parts for rail vehicles in this embodiment includes an upper template 1 and a concave mold 2. The upper template 1 is set directly above the concave mold 2, and the superplastic forming mold also includes The punch 3, the punch 3 is fixedly mounted on the lower end of the upper mold plate 1, an air-filled cavity is formed between the punch mold 3 and the female mold 2, the aluminum alloy sheet 4 is set on the upper end of the female mold 2, and the upper mold plate 1 is provided with air inlets 5. The lower end of the female mold 2 is provided with a vent 6; the lower end of the male mold 3 is provided with a boss 7; the shoulder of the boss 7 and the side wall of the male mold 3 are rounded, and the boss 7 A second reverse extrusion sealing groove 8 is provided in the middle of the.

[0025] Although the pre-bending for...

Example Embodiment

[0028] Specific implementation manner two: combination figure 1 with figure 2 To illustrate this embodiment, the length of the second reverse extrusion sealing groove 8 of this embodiment is 1 to 2 times the wall thickness of the aluminum alloy sheet. With this setting, the sealing effect is better. The other composition and connection relationship are the same as in the first embodiment.

Example Embodiment

[0029] Specific implementation mode three: combination figure 1 with figure 2 To illustrate this embodiment, the fillet radius of the first fillet sealing groove 7 of this embodiment is 10 to 15 times the wall thickness of the aluminum alloy sheet. So set up. The other composition and connection relationship are the same as in the second embodiment.

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Abstract

The invention discloses a superplastic forming die for aluminum alloy coating parts for railway vehicles and a forming method for the superplastic forming die, and relates to a superplastic forming die and a forming method thereof. The invention solves the problems of low production efficiency and high production cost in the aluminum alloy coating parts for the railway vehicles in the prior art. An upper plate of the superplastic forming die is arranged over a female die; a male die is fixedly arranged at the lower end of the upper plate; and an aluminum alloy plate is arranged at the upper end of the female die between the male die and the female die. The superplastic forming method comprises the following steps: 1, mounting the superplastic forming die; 2, spraying a high temperature lubricant; 3, preheating the superplastic forming die; 4, preheating the aluminum alloy plate; 5, bending the aluminum alloy plate in an initial stage; 6, after the aluminum alloy plate is bent in the initial stage, forming a sealed space between the bent aluminum alloy plate and the male die; and 7, finally shaping the aluminum alloy plate. The invention is suitable for manufacturing the aluminum alloy coating parts for the railway vehicles.

Description

Technical field [0001] The invention relates to a superplastic forming mold and a forming method thereof, in particular to a superplastic forming mold for covering parts with aluminum alloy for rail vehicles and a forming method thereof. Background technique [0002] Lightweight locomotives are of great significance for improving the performance of high-speed trains. At present, the commonly used method at home and abroad is material lightweight, that is, high-performance locomotives are made of high-strength aluminum alloy materials. Large-size thin-walled aluminum alloy plates are used to process and manufacture aluminum alloy car body structural parts for high-speed trains, subways, light rail and other rail transit vehicles, such as window walls, inner and outer end walls, door pillar covers and other interior equipment and other complex Structure. This kind of important rail transit vehicle interior parts should meet the comprehensive requirements of performance, precision...

Claims

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Application Information

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IPC IPC(8): B21D26/031B21D26/021
Inventor 王国峰
Owner 王国峰
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