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Preparation process of pressure-resistant titanium alloy hemisphere for deep submersible manned sphere

A preparation process and technology of titanium alloy, applied in the field of titanium alloy processing, can solve the problems of many welds and complex manufacturing process, and achieve the effect of reducing welds

Active Publication Date: 2017-03-08
BAOJI TITANIUM IND CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, 6 pieces of melon petals are welded into a hemisphere, and then the two hemispheres are butt-welded into a spherical shell. There are many welding seams and the manufacturing process is complicated.

Method used

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  • Preparation process of pressure-resistant titanium alloy hemisphere for deep submersible manned sphere
  • Preparation process of pressure-resistant titanium alloy hemisphere for deep submersible manned sphere

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Embodiment Construction

[0014] The embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] The first step is to cut the TC4 ELI titanium alloy thick plate used for stamping into a circle according to the forming size of the manned sphere and hemisphere of the deep submersible, and use it as the slab to be stamped, with a size of Φ 3150×90mm;

[0016] The second step is to design and determine the final mold size based on the size of the manned spherical hemisphere of the deep submersible and the subsequent processing requirements, combined with the expansion coefficient of the TC4 ELI titanium alloy, and on the basis of comparative tests of steel, pure titanium and other materials. figure 1 A schematic diagram of the titanium alloy hemis...

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Abstract

The invention discloses a technology for preparing a pressure resisting titanium alloy half ball for a bathyscaph manned ball. The technology comprises the steps that firstly, a TC4 ELI titanium alloy thick plate for punching is cropped to be round according to the size of a target ball to serve as a plate blank to be punched; secondly, a forming die is designed according to the size of the target ball and a TC4 ELI titanium alloy material expansion coefficient; thirdly, the plate blank to be punched and the surface of the forming die are coated with an anti-oxidation lubrication coating; fourthly, the plate blank to be punched is heated to 850 DEG C to 930 DEG C, and insulating is carried out for 2-4 hours; fifthly, the heated plate blank to be punched is punched on a lower die of the forming die, the temperature drop is strictly controlled in the punching process, and when the temperature of the plate blank to be punched is reduced to be below 700 DEG C, punching is stopped, the plate blank to be punched is returned to a furnace again, secondary punching is carried out, and the process is executed circularly till the plate blank to be punched is punched into the half ball. Compared with multi-scalloped-segment installing and welding, a large number of weld lines can be reduced, and obvious advantages on the ball size precision control, ball pressure bearing and safety performance are achieved.

Description

technical field [0001] The invention relates to the technical field of titanium alloy processing, in particular to a process for preparing a pressure-resistant titanium alloy hemisphere for a deep submersible manned sphere. Background technique [0002] Titanium alloy has high specific strength, can resist local and uniform corrosion in seawater, has high fatigue performance and corrosion fatigue limit, and has high enough fracture toughness and resistance to seawater stress corrosion cracking. Excellent material for human spheres. The spherical shell of the manned cabin is the most important component of the submersible, and its design and production quality are an important guarantee for the performance of the submersible and the safety of the crew. The prior art adopts that six melon petals are assembled and welded into a hemisphere, and then two hemispheres are butt-welded into a spherical shell, which has many welding seams and complicated manufacturing process. Cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/02B21D37/18
CPCB21D22/02B21D37/18
Inventor 贾栓孝王韦琪张永强冯雅奇王剑虹苑晓刚谢爱军潘长标
Owner BAOJI TITANIUM IND CO LTD
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