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Closed die forging die and closed die forging method

A technology of die forging and occlusion, which is applied in the direction of manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc., can solve the problems of complex shape, large deformation, large forging volume, etc., and reduce production costs , The effect of reducing the failure rate

Inactive Publication Date: 2016-12-07
慈溪市丰盈电声配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in closed forging, due to the need to obtain a large amount of deformation and complex profiles in one deformation, the forging machine is required to provide a huge forging pressure to act on the die; If the pressure is too small, it is difficult for the billet to fill the entire die cavity, and it is easy to cause the billet to fail to fill the die cavity and produce waste products. Therefore, the forming force is geometrically increased compared with the complexity of the forging shape.
The greater the forming force, the greater the pressure of the forging machine, the higher the purchase and maintenance costs of the forging machine, and the higher the production cost of forgings.

Method used

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  • Closed die forging die and closed die forging method
  • Closed die forging die and closed die forging method
  • Closed die forging die and closed die forging method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 , figure 2 , image 3 , is a schematic diagram of a closed die forging die for a joint flange (also known as "flange fork"), including an upper die 2 and a lower die 3, and the upper die 2 is provided with a barrel 4 and a punch 1. The punch The rod 1 extends into the barrel 4 .

[0022] The die forging method of the joint flange is as follows:

[0023] Step a: heating the blank, opening the closed forging die, and putting the blank into the cavity of the closed forging die;

[0024] Step b: Close the upper mold 2 and the lower mold 3, and lock the upper mold 2 and the lower mold 3;

[0025] Step C: the punch rod 1 is punched down in the barrel 4, so that the blank fills the entire die cavity;

[0026] Step D: Open the closed forging die after the blank is formed by die forging, and take out the forging.

[0027] After forging, trimming, shot blasting, cold finishing, turning and other processes can also be carried out.

Embodiment 2

[0029] Such as Figure 4 , Figure 5 , is a schematic diagram of a closed die forging die for a triangular flange, and its basic structure is the same as in Example 1 except that the cavity shape is different from that of Example 1.

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Abstract

The invention relates to the field of closed die forging and discloses a closed die forging die and a closed die forging method. The closed die forging die comprises an upper die body and a lower die body. A material barrel is arranged on the upper die body or the lower die body. The closed die forging die further comprises a stamping rod which stretches into the material barrel. The closed die forging method comprises the steps that a, a blank is heated, the closed die forging die is opened, and the blank is put into a die impression of the closed die forging die; b, the upper die body and the lower die body are closed and locked; c, the stamping rod stamps downwards, so that the die impression is filled with the blank; and d, after the blank is subjected to die forging and forming, the closed die forging die is opened, and a forging is taken out. According to the closed die forging die and the closed die forging method, the technical scheme is adopted, and the requirement for the pressure of a forging machine in the die forging process can be reduced, so that the die cavity is filled with the blank in an extrusion mode, the forging reject ratio is decreased, and the forging production cost is reduced.

Description

technical field [0001] The invention relates to the field of closed die forging, in particular to a die and a closed die forging method using the die. Background technique [0002] Open die forging refers to die forging with flash. In traditional open die forging, the flash is longer and thicker, which not only wastes the billet, but also requires large-tonnage equipment due to the large forming force. [0003] Block forging means that in a closed cavity, through two or more molds moving in one direction or in opposite directions, the metal is extruded to fill the cavity, so as to obtain forgings without flash, which can reduce materials and reduce costs. However, in closed forging, due to the need to obtain a large amount of deformation and complex profiles in one deformation, the forging machine is required to provide a huge forging pressure to act on the die; If the pressure is too small, it is difficult for the billet to fill the entire die cavity, and it is easy to cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21J5/02
CPCB21J13/02B21J5/025
Inventor 冯毅峰
Owner 慈溪市丰盈电声配件有限公司
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