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Variable cross-section twisting and molding device and method for metal material

A metal material and variable cross-section technology, applied in the direction of metal extrusion dies, metal extrusion mandrels, etc., can solve the problems of low production efficiency and achieve the effect of improving efficiency

Active Publication Date: 2014-02-05
福建祥鑫股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing extruding and twisting process needs to reciprocate multiple loadings on both sides to achieve a certain degree of grain refinement and the production efficiency is low, and to provide a metal material variable cross-section extrusion and twisting forming device and method

Method used

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  • Variable cross-section twisting and molding device and method for metal material
  • Variable cross-section twisting and molding device and method for metal material
  • Variable cross-section twisting and molding device and method for metal material

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specific Embodiment approach 1

[0033] Specific implementation mode one: combine figure 1 , figure 2 , image 3 , Figure 4 and Figure 15 Describe this embodiment. This embodiment includes a first punch 1 and a first extrusion die 2. The first extrusion die 2 is the first large-section rectangular channel 2-1 and the first pyramidal spiral channel 2 from top to bottom. -2 and the first small-section rectangular passage 2-3, the cross-sectional area of ​​the first pyramid spiral passage 2-2 gradually decreases from top to bottom, the cross section of the first pyramid spiral passage 2-2 is rectangular, and the first punch 1 It is coaxially arranged above the first extrusion torsion die 2 . The extrusion ratio is the ratio of the cross-sectional areas of the two channels.

specific Embodiment approach 2

[0034] Specific implementation mode two: combination figure 1 and Figure 15 This embodiment is described. This embodiment is a method for realizing variable cross-section extrusion and twisting of metal materials using the device of Embodiment 1. The steps are as follows:

[0035] Step 1. Setting the forming parameters: the first helix angle β1 of the first pyramidal helical channel 2-2 is 10°-60°, the length of the first pyramidal helical channel 2-2 is 0.5d-3d, where d is the first The diameter of the circumscribed circle of the rectangular section at the entrance of the pyramid spiral channel 2-2, the diameter d of the circumscribed circle is 30 mm to 100 mm, and the extrusion ratio of the first large-section rectangular channel 2-1 to the first small-section rectangular channel 2-3 4 to 100;

[0036] Step 2, the first punch 1 goes down to apply the load, and the blank 3 enters the first large-section rectangular channel 2-1 under the action of the first punch 1;

[003...

specific Embodiment approach 3

[0040] Specific implementation mode three: combination figure 1 , figure 2 and Figure 4 Describe this embodiment, this embodiment is that the first helix angle β1 of the first pyramid spiral passage 2-2 is set to be 30 ° in the step 1, the first large cross-section rectangular passage 2-1 and the first small cross-section rectangular passage 2- 3 has an extrusion ratio of 25. The extruded torsion angle of forming part 4 is 90 ° like this. Other steps are the same as in the second embodiment.

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Abstract

The invention provides a variable cross-section twisting and molding device and method for a metal material, relates to a device and a method of a large plastic deformation technology, and aims to solve the problems of an existing twisting process that grain crystal refining can be realized only after a plurality of times of loading are carried out back and forth on the two sides and the production efficiency is low. The device is characterized in that a first twisting mould is composed of a first large cross-section rectangular channel, a first pyramid spiral channel and a first small cross-section rectangular channel in sequence from top to bottom; the cross section of the first pyramid spiral channel is reduced gradually from top to bottom; the cross section of the first pyramid spiral channel is rectangular; a first puncher pin is coaxially arranged above the first twisting mould. The method comprises the following steps: 1. the spiral angle is 10-60 degrees, the length of the spiral channel is 0.5d-3d and the extrusion ratio is 4-100; 2. a blank enters the first large cross-section rectangular channel under the effect of the first puncher pin; 3. the twisting angle of the blank is 90-180 degrees; 4. the variable cross-section twisting of the material is finished to form a part. The variable cross-section twisting and molding device and method for the metal material are used for preparing or machining and molding the high-performance metal material.

Description

technical field [0001] The invention relates to a large plastic deformation technology device and method, in particular to a metal material variable cross-section extruding and twisting forming device and method. Background technique [0002] With the continuous advancement of science and technology, the strength and performance requirements of the required metal materials in the fields of aerospace, automobile manufacturing and weaponry are also increasing. Alloy strengthening, deformation strengthening, fine-grain strengthening and solid solution-precipitation strengthening are the main ways to improve the structure and performance of materials. However, the existing research results show that only relying on one or two strengthening mechanisms to improve the comprehensive performance of materials is still very limited. If multiple mechanisms can be effectively combined through ideal processing methods, it will not only help to fully exploit the performance of materials, b...

Claims

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Application Information

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IPC IPC(8): B21C25/08B21C23/18
Inventor 李峰边楠石文勇
Owner 福建祥鑫股份有限公司
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