电弧焊用保护涂层的热物理性能

Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003. Pub Date : 2003-04-07 DOI:10.1109/SPCMTT.2003.1438152

E. Zernin, V.T. Fedko, S. B. Sapozhkov

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引用次数: 0

摘要

研究了电弧焊用保护涂层的热物理性能及其对焊接残余应力值的影响。通过研究，确定了保护涂层的使用可以降低焊接后的残余应力。这是由于焊接接头金属的冷却速度比没有保护涂层的焊接后慢。在这种情况下，保护涂层的热扩散系数越小，焊后残余应力越小。因此，在开发新型防护涂料时，有必要以获得具有最低热扩散系数的组合物为目标。

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Thermo physical properties of protective coatings used in arc welding by melting

The paper investigates the thermophysical properties of protective coatings used in arc welding by melting and their effect on the value of the residual welding stress. Based on the performed investigations, it was established that the usage of protective coatings provide a decrease of the residual stresses after welding. This is due to the slower cooling of the welded joint metal than after welding without protective coating. In this case, the less factor of thermal diffusivity of protective coating, the lower residual stress after welding. Hence, in developing new protective coatings it is necessary to aim at obtaining composition with the lowest factor of thermal diffusivity.

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Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.

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