A high-temperature heat treatment method for large-size titanium alloy coiled tube segments
By using a ring-shaped heat treatment device and a high-temperature heat treatment method protected by argon gas, the problem of high cost of vacuum heat treatment for large-size titanium alloy cylinder sections is solved, achieving low-cost and high-efficiency heat treatment results, which is suitable for large-size titanium alloy cylinder sections.
CN117604416BActive Publication Date: 2026-06-19CHINA SHIPBUILDING INDUSTRY CORPORATION NO725 RESEARCH INSTITUTE
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA SHIPBUILDING INDUSTRY CORPORATION NO725 RESEARCH INSTITUTE
- Filing Date
- 2023-11-30
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
High-temperature heat treatment of large-size titanium alloy cylinder sections is costly, vacuum heat treatment is not feasible, and the slow cooling rate of vacuum heat treatment affects the performance of the weld.
Method used
An annular heat treatment device is used, which utilizes argon gas protection to perform high-temperature heat treatment on the cylinder section through the inlet and outlet pipes, thereby avoiding oxidation and corrosion, reducing costs and improving efficiency.
Benefits of technology
It achieves low-cost and easy-to-implement high-temperature heat treatment, significantly reducing manufacturing costs, ensuring product quality, and the device is recyclable and suitable for large-size titanium alloy cylinder sections.
✦ Generated by Eureka AI based on patent content.
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Figure CN117604416B_ABST
Abstract
This invention provides a high-temperature heat treatment method for large-size titanium alloy welded cylinder sections, comprising the following steps: S1: Based on the structure of the cylinder section to be treated, a heat treatment device is fabricated. The heat treatment device includes a bottom plate, a cylinder body, and a top plate from bottom to top. The two ends of the cylinder body are connected to the bottom plate and the top plate, respectively. An air inlet pipe is connected to the cylinder body and is close to the bottom plate. An exhaust pipe is connected to the top plate; S2: The top plate is opened, and the cylinder section is placed inside the heat treatment device. Then, the top plate is welded and sealed to the cylinder body; S3: Argon gas is injected into the inner cavity of the device through the air inlet pipe to purge the original air in the cavity; S4: The heat treatment device is placed in a heat treatment furnace for heat treatment. After the cylinder section has been heat-treated, the top plate is opened and the cylinder section is removed. The high-temperature treatment method of this invention overcomes the problems of high cost, low efficiency, difficult operation, and even the inability to perform vacuum heat treatment on large-size titanium alloy welded cylinder sections using existing vacuum heat treatment methods.
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