To do mycology analysis to the blank parent and its cracking weld for different procedure treatment to the blank before welding and occur weld crack during welding forming by different welding method.
The paper introduces the difficulties of roller spray welding technique such as controlling for distortion, keeping for layer evenness and dimension of roller diameter.
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3. 利用化学镀镍作阻挡层，化学镀金作可焊层，可得到良好的焊接效果。
Good soldering result may be obtained by applying electroless nickel as barrier layer and electroless gold as top layer to provide solderability.
Design of surface mount PCB makes an impact on soldering quality. The design of soldering pad, track layout, location and through hole treatment are discussed.
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5. 本文着重从焊接夹具方面对侧围总成装焊拼台的设计作介绍。
This paper introduces the design of the bench of the assembling and welding of the lateral assembly with focus on welding jig.
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6. 本文着重从焊接夹具方面对侧围总成装焊拼台的设计作介绍。
This paper introduces the design of the bench of the assembling and welding of the lateral assembly with focus on welding jig.
