Titanium alloy head and its preparation method and application

A technology of titanium alloy and head, applied in the field of titanium alloy head and its preparation, can solve the problems of affecting the service life of the pressure-resistant spherical shell, weak mechanical properties, and lack of metal flow lines

Active Publication Date: 2022-04-19
湖南湘投金天科技集团有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the submarine has been in the deep sea for a long time, and the pressure-resistant spherical shell on the submarine needs to withstand high loads and sudden pressure changes caused by water flow. In the spherical shell, the titanium alloy head and its connection with the fittings do not have a complete metal flow line, and the fittings or welded joints on the pressure-resistant spherical shell are prone to crevice corrosion, and the mechanical properties are weak, easy to break, and serious Affected the service life of the pressure spherical shell

Method used

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  • Titanium alloy head and its preparation method and application
  • Titanium alloy head and its preparation method and application
  • Titanium alloy head and its preparation method and application

Examples

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Effect test

preparation example Construction

[0037] One embodiment of the present invention provides a method for preparing a titanium alloy head, including the following steps S10-S30.

[0038] Step S10 , providing a titanium alloy slab, the titanium alloy slab includes a main body slab and a bump provided on the bottom of the main body slab.

[0039] Step S20, providing a stamping die, the stamping die includes an upper die and a lower die, the upper die has a hemispherical molding surface, the lower die has a first groove for accommodating the main body slab and a second groove for accommodating the bump, the second The groove is arranged on the bottom wall of the first groove and communicates with the first groove, and the molding surface of the upper mold cooperates with the first groove and the second groove of the lower mold to form a molding cavity.

[0040] Step S30, heating the titanium alloy slab to T β -20°C, then placed in the molding cavity of the die for n 1 Stamping to get the titanium alloy head; n 1 ...

Embodiment 1

[0080] (1) Titanium alloy head slab tooling mold design: According to the actual required titanium alloy head size, the relative position of the connection structure between the main body and accessories in the titanium alloy head is obtained through simulation, and the design drawing of the titanium alloy slab is obtained. Then prepare the head slab tooling mold according to the design drawing and reserve the machining allowance.

[0081] Specifically, the head slab tooling mold includes a main body conical cavity and a conical convex cavity arranged at the bottom of the main cavity, and the main cavity and the convex cavity are connected. The diameter of the main body cavity is 1700mm, the diameter of the conical convex cavity is 160mm, and the center point of the conical convex cavity is 130mm away from the center point of the main cavity.

[0082] (2) Preparation of titanium alloy slab:

[0083] The alloy ingot includes the following components by weight percentage: 2% to...

Embodiment 2

[0090] Example 2 is basically the same as Example 1, except that in step (3), the first groove of the lower mold is heated to 750°C, and the second groove of the lower mold is locally heated to 830°C.

[0091] Other processing steps and conditions are identical with embodiment 1.

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Abstract

The invention involves a titanium alloy head and its preparation methods and applications.In this preparation method, the titanium alloy plate blanks include the main board blanks and the convex blocks located on the bottom of the main plate blank; the molded molds include upper and lower molds.The first groove and the second groove for the convex block, the second groove is located on the bottom wall of the first groove and connects to the first groove.The groove and the second groove are coordinated to form a cavity; heating titanium alloy plate blanks to T β 20 ° C, then placed in the molding cavity of the punch for N 1 Secondary stamping; During the last stamping process, the temperature of the first grant of the first grant of the mold under the control is 700 ° C to 750 ° C, and the temperature at the control of the second seedy is higher than the temperature at the tank at the first seminar.50 ℃ ~ 80 ℃.The titanium alloy sealed heads that have been made in this preparation method have integrated titanium alloy sealed heads and titanium alloy sea seals. It has a complete metal streamline and improves the comprehensive mechanical properties of the titanium alloy sealed head.Essence

Description

technical field [0001] The invention relates to the technical field of titanium alloys, in particular to a titanium alloy head and its preparation method and application. Background technique [0002] The head refers to the component used to close the end of the container to isolate the internal and external media, also known as the end cap, which has been widely used in many industries such as medical treatment, transportation, petrochemical industry, and submarines. Among them, the titanium alloy head has high specific strength and excellent resistance to seawater corrosion. Compared with steel materials, when the titanium alloy head is used as a pressure-resistant material, it can greatly reduce the weight of the spherical shell and increase the payload. Therefore, titanium alloy heads are often used to prepare pressure-resistant spherical shells on deep submersibles. [0003] The pressure-resistant spherical shell mainly includes a titanium alloy head and accessories c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D51/44B21D22/02B63B3/13
CPCB21D51/44B21D22/02B63B3/13
Inventor 杨胜周慧孙冬柏俞宏英肖芬向午渊张慧杰欧阳涛
Owner 湖南湘投金天科技集团有限责任公司
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