Tantalum alloy welding method
Through the methods of pre-processing and electron beam welding, the problems of insufficient penetration, poor sealing and residual stress in tantalum alloy welding are solved, high bonding strength and good sealing are achieved, and it is suitable for tantalum alloy welding of high-temperature structures.
CN119489251BActive Publication Date: 2025-10-03CHINA ACAD OF AEROSPACE AERODYNAMICS
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Patent Information
- Application Number
- CN202411790873.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2044-12-06
AI Technical Summary
Technical Problem
Existing tantalum alloy welding technology has problems such as insufficient penetration, poor sealing and high residual stress, which makes it difficult to meet the engineering application requirements of high-temperature structures.
Method used
The welding gap of the pre-processed tantalum alloy plate is embedded with a tantalum alloy welding rod of the same material, and welding is performed by electron beam welding. The specific steps include adjusting the gap width, drilling and optimizing welding parameters.
Benefits of technology
It improves the bonding strength and sealing of tantalum alloy welding, reduces residual stress, avoids tantalum alloy oxidation, and meets the engineering application requirements of high-temperature structures.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to a tantalum alloy welding method, comprising: splicing two tantalum alloy plates A1 and A2 to be welded to obtain a gap B1 to be welded; pre-processing the two tantalum alloy plates A1 and A2 along the position of the gap B1 to be welded, wherein the pre-processing method is as follows: adjusting the width of the gap to be welded between the tantalum alloy plates A1 and A2, drilling holes in the splicing surfaces of the tantalum alloy plates A1 and A2 along the thickness direction, wherein the diameter of the drilled holes is 0.5 mm to 1 mm larger than the adjusted width of the weld, and the depth of the drilled holes is equal to the thickness of the tantalum alloy plates A1 and A2; inserting a tantalum alloy welding rod of the same material into the drilled gap, reducing the width between the welding rod and the plates, thereby obtaining a new gap B2 to be welded; using electron beam welding to weld the new gap B2 to be welded; and completing the welding to obtain a tantalum alloy plate welded part. The present invention has the advantages of high welding strength, good sealing performance, and low residual stress, and can achieve reliable connection of tantalum alloys.
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