Viscous medium bidirection press cold shaping method of titanium and titanium alloy plate material parts

A viscous medium and two-way pressure technology, which is applied in the field of pressure cold forming, can solve the problems that titanium and titanium alloy plate parts cannot be formed, and achieve the effects of improving forming accuracy, reducing springback and improving efficiency

Inactive Publication Date: 2007-07-18
HARBIN INST OF TECH
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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 provide a viscous medium two-way pressure cold forming method for titanium...

Method used

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  • Viscous medium bidirection press cold shaping method of titanium and titanium alloy plate material parts
  • Viscous medium bidirection press cold shaping method of titanium and titanium alloy plate material parts

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specific Embodiment approach 1

[0008] Specific Embodiment 1: The present embodiment will be specifically described below with reference to FIG. 1 . This embodiment consists of the following steps: 1. Put the blank 5 on the viscous medium bin 6, and press the blank 5 with the die 1 filled with semi-solid viscous medium 4 in the cavity to close the mold cavity; 2. The viscous medium 4 injected into the cylinder 7 by the plunger 8 is filled with the viscous medium chamber 6; 3. The plunger 8 continues to inject the viscous medium 4 into the medium chamber 6 to apply forming pressure to the blank 5; 4. Adjust medium discharge The pressure control valve 3 at the port 2 allows the viscous medium 4 in the die 1 to flow out in a controlled manner and exerts reverse pressure on the blank 5; the blank 5 is gradually pulled in under the bidirectional pressure of the viscous medium 4 on both sides In the cavity of the die 1; 5. Finally, the viscous medium 4 is discharged out of the cavity of the die 1, and the blank 5 ...

specific Embodiment approach 2

[0009] Specific Embodiment 2: The present embodiment will be specifically described below with reference to FIG. 2 to FIG. 4 . The difference between this embodiment and Embodiment 1 is that in step 4, the pressure control valve 3-2 is first adjusted so that the viscous medium 4 in the die 1 can controllably flow out from the medium discharge port 2-2 and press the plate blank 5 Apply reverse pressure; the slab blank 5 is gradually pulled into the cavity of the die 1 under the bidirectional pressure of the viscous medium 4 on the upper and lower sides, and is first deformed at the medium discharge port 2-2; After the mold is pasted at the medium discharge port 2-2, close the pressure control valve at the medium discharge port 2-2, and open the pressure control valve 3-1 at the medium discharge port 2-1, so that the viscous medium 4 flows out from there, The billet flows to the medium discharge port 2-1 under the action of two-way pressure, and finally sticks the mold here; clo...

specific Embodiment approach 3

[0013] Specific Embodiment Three: The present embodiment will be specifically described below with reference to FIG. 2 to FIG. 4 . The difference between this embodiment and the second embodiment is that the forming sequence is different. In step four, first open the pressure control valve 3-1 at the medium discharge port 2-1, then open the pressure control valve 3-2 at the medium discharge port 2-2, and finally open the pressure control valve at the medium discharge port 2-3. Pressure control valve 3-3.

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Abstract

The present invention relates to a viscous medium bidirectional pressure cold forming method of titanium and titanium alloy plate component. Said method includes the following steps: (1) placing slab billet material on the viscous medium bin, and using the female die whose die cavity is filled up with semi-solid viscous medium to tightly press slab billet material and closing die cavity; (2), utilizing plunger to make the viscous medium bin be filled up with viscous medium in the viscous medium injection cylinder; (3) utilizing plunger to continuously inject the viscous medium into the viscous medium bin and apply the forming pressure to the slab billet material; (4), regulating pressure control valve positioned in the medium discharge outlet to make the viscous medium in the female die be controllably flowed out and apply reverse pressure to said slab billet material; under the action of upper and lower two-side bidirectional pressures the slab billet material can be progressively pulled into the die cavity of concave die; and (5), finally, the viscous medium can be discharged to the exterior of die cavity of female cavity, under the enough pressure the slab billet material can be completely closed to the die so as to obtain the required component.

Description

technical field [0001] The invention relates to a pressure cold forming method of titanium and titanium alloy plate parts. Background technique [0002] Because titanium and titanium alloys have high specific strength, wide operating temperature range and excellent corrosion resistance, they are widely used in aviation and aerospace industries. However, due to the characteristics of high yield strength, large elastic modulus, large yield ratio, high notch sensitivity, and uneven vertical and horizontal properties (anisotropy) of titanium alloys, springback, deformation, and wrinkling are prone to occur after forming. Forming processing has brought greater difficulties. [0003] The special properties of titanium and titanium alloys determine that most titanium plate parts must be heated and formed. The difficulty of heat forming of titanium and titanium alloys is: the thermal conductivity of titanium and titanium alloys is poor, and a large temperature difference is genera...

Claims

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Application Information

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IPC IPC(8): B21D26/02B21D26/021
Inventor 王忠金刘建光宋辉王哲
Owner HARBIN INST OF TECH
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