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vanhalen1983(金币+5, 翻译EPI+1): 2010-05-14 08:21:06
According to welding technology with low cost, simple process, easy to operate and so on. Currently, the domestic development of a new type of bainite surfacing electrode, its performance is better than traditional welding electrode. This paper studies in cold welding conditions, the different welding electrode directly on the welding 42Cr2Mo bainitic steel, 20Cr1Mo10 steel, 45 steel, and bainitic frog heart track surfacing layer, heat affected zone, fusion zone of the organization, performance. By comparing obtained in different organizations and welding defects, which are optimized, in order to meet performance. This practical engineering basis for welding applications.
By surfacing layer and the hardness of the surface: The bainite electrodes, welding without preheat, without heat treatment after welding. Good welding technological properties, stable arc, less spatter, melting coefficient, good slag, forming a good weld; weld mainly bainite (granular bainite). Weld hardness tests show that the weld hardness and stability, hardness of deposited metal was higher than the base metal, to achieve an enhanced wear resistance requirements.
The results show that under the experimental conditions, with the welding current and the increase of temperature between layers deposited layer of weld thinner. With the temperature increase between layers of weld hardness increase. |
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