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本厂生产的3DG111,3DK2、3DK7、FG101等高频小功率管在内引线焊接工艺中多年以来一直采用金丝热压焊接.在生产过程中,此种金铝系统热压工艺暴露出它的固有弱点:压点的抗拉强度、抗冲击强度差,高温存贮后(尤其200℃以上的高温),常出现压点脱开或接触电阻变大等问题.并且金-铝间会产生脆性的导电性能不良的金属间化合物“紫斑”,结果导致小功率管“热开路”.为克服热压的此种弊病,在3DG111,FG101等压焊面积较小的小功率管的生产过程中采用了超声键合工艺,现已获得成功.并且在镀镍零件上进行Al-Al超声键合也收到了良好
The factory production of 3DG111, 3DK2, 3DK7, FG101 and other high-frequency low-power tube in the lead wire welding process for many years has been using hot wire welding. In the production process, this gold and aluminum system hot process exposed its Inherent weaknesses: the pressure point of the tensile strength, impact strength is poor, high temperature storage (especially over 200 ℃ high temperature), pressure points often appear out of contact or contact resistance becomes larger and other problems. And gold - aluminum will have brittle Of the poor conductivity of the intermetallic compound “purple spots”, resulting in low-power tube “hot open.” To overcome these shortcomings of hot pressing, 3DG111, FG101 pressure welding area smaller small power tube production process used The ultrasound bonding process has been successful, and Al-Al ultrasonic bonding on nickel-plated parts has also received good