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Simple forming process of seal head for titanium alloy cylinder

A forming process, titanium alloy technology, which is applied in the field of simple forming process of titanium alloy gas cylinder head, can solve the problems of long production cycle and high cost, and achieve the effects of increased production cycle, low cost and reduced R&D cost

Inactive Publication Date: 2011-06-08
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a simple forming process for the head of the titanium alloy gas cylinder, which solves the problems of long production cycle and high cost of the head of the titanium alloy gas cylinder in the research and development and promotion stage.

Method used

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  • Simple forming process of seal head for titanium alloy cylinder
  • Simple forming process of seal head for titanium alloy cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present invention is applied to the TC4 titanium alloy head of Φ89 specification, and the specific implementation method is as follows:

[0034] (1) The wall thickness of the part is 5mm. According to the formula of the technical plan, the wall thickness of the blank is calculated as 10mm, and the gap between the punch and die is 11mm.

[0035] (2) Plasma flame cutting is used for blanking, and the size of the titanium alloy sheet blank is Φ140 0 +4 .

[0036] (3) After blanking, the edge is polished to clean the burrs and oxidized areas; the edge is de-slanted, the maximum thickness of the edge is 2mm, and the angle is 8°; the surface of the blank is coated with FR5 glass lubricant.

[0037] (4) Electric furnace heating, stainless steel is placed in the furnace, and the furnace temperature is set to 940±10°C. After the temperature reaches the set temperature, put the billet into the heating furnace, and keep warm for 15 to 40 minutes.

[0038] (5) The mold is pr...

Embodiment 2

[0041] The present invention is applied to the TC4 titanium alloy head of Φ189 specification, and the specific technical scheme is as follows:

[0042] (1) The wall thickness of the part is 5mm. According to the formula of the technical plan, the wall thickness of the blank is calculated as 10mm, and the gap between the punch and die is 11mm.

[0043] (2) Plasma flame cutting is used for blanking, and the size of the titanium alloy sheet blank is Φ305 0 +4 .

[0044] (3) After blanking, the edge is polished to clean the burrs and oxidized areas; the edge is de-slanted, the maximum thickness of the edge is 2mm, and the angle is 8°; the surface of the blank is coated with FR5 glass lubricant.

[0045] (4) Electric furnace heating, place stainless steel in the furnace, heat to 940±10°C, after the temperature reaches the set temperature, put the billet into the heating furnace, and keep warm for 15-40 minutes.

[0046](5) The mold is preheated to 300±20°C. During the first test...

Embodiment 3

[0049] The present invention is applied to the TA2 titanium alloy head of Φ124 specification, and the specific technical scheme is as follows:

[0050] (1) The wall thickness of this specification part is 6.5mm, the blank wall thickness calculated according to the formula of the technical plan is 12mm, and the gap between the punch and die is 13.2mm.

[0051] (2) Plasma flame cutting is used for blanking, and the size of the titanium alloy sheet blank is Φ200 0 +4 .

[0052] (3) After blanking, the edge is polished to clean burrs and oxidized areas; the edge is de-slanted, the maximum thickness of the edge is 2.4mm, and the angle is 5°; the surface of the blank is coated with FR5 glass lubricant.

[0053] (4) Heating in an electric furnace, place a stainless steel pad in the furnace, heat to 880±10°C, put it into the furnace when it reaches the temperature, and keep it warm for 15 to 40 minutes.

[0054] (5) The mold is preheated to 300±20°C. During the first test, a laser ...

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Abstract

The invention relates to a machining process and a manufacture technique of metal materials, in particular to a simple forming process of a seal head for a titanium alloy cylinder. The process comprises the following steps: increasing the thickness of a blank during the design of a die, and correspondingly increasing the die clearance; blanking; preprocessing the blank, and heating to a temperature of 20-50 DEG C below a transformation point by using an electric furnace; preheating the die to 300 plus or minus 20 DEG C; ensuring the forming temperature to be within the alloy forging temperature range and avoiding overlarge temperature difference between the die and the blank; and punching by multiple heating numbers to finish the forming process. A product manufactured by adopting the process meets the technique data requirement. Compared with a common forming process with multiple heating numbers, the invention reduces the manufacture of at least one set of die, reduces a working procedure of changing tools during producing the dies, reduces the cost by more than 40 percent and shortens the production cycle by more than 50 percent.

Description

technical field [0001] The invention relates to a metal material processing and manufacturing method, in particular to a simple forming process for a head of a titanium alloy gas cylinder. Background technique [0002] With the development of aerospace technology, the use environment of gas cylinders is becoming more and more harsh, and the performance requirements are getting higher and higher. The working temperature of gas cylinders made of stainless steel is generally -60°C ~ +60°C, and the pressure is 30MPa, which has great limitations in use. In order to increase the pressure level, the wall thickness must be increased according to the traditional method, which will increase the overall weight of the cylinder, which deviates from the requirements of pressurization and weight reduction, and has a huge impact on the performance of aerospace products. Titanium alloys have excellent properties such as high strength, light specific gravity, and corrosion resistance, and ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23K10/00B21D22/06B21D37/10B21D37/16
Inventor 万自永余巍赵国超
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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