Cold welding sealing of copper-water micro heat pipe ends
| Autor: | Long-sheng Lu, Da-xiang Deng, Yong Tang, Dong Yuan |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Metallurgy Metals and Alloys chemistry.chemical_element Welding Geotechnical Engineering and Engineering Geology Condensed Matter Physics Compression (physics) Copper law.invention Heat pipe chemistry law Materials Chemistry Cold welding Tube (fluid conveyance) Deformation (engineering) Groove (music) |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 19:568-574 |
| ISSN: | 1003-6326 |
| Popis: | The quality of micro heat pipe(MHP) is strongly affected by sealing technology. Based on the analysis of requirements of sealing technology, a cold welding technology was presented to seal MHP. In the cold welding process, compression force was used to flatten micro groove copper(MGC) tube. Then the bonding of MGC tube was reached because of intensively plastic deformation of MGC tube under pressure. It is found that the plastic deformation area of the cold welding of MGC tube can be divided into three sections. The deformation of micro grooves in each section was investigated; the influence of the dimensions of cylindrical heads on the weld joint shape and strength was studied; and a comparison between smooth copper tube and MGC tube was done. The results show that a groove compression stage exists in the cold welding of MGC tube besides a flattened stage and a melting stage. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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