热压分子焊在烧结压机上的应用

烧结压机的电极结构为零散的紫铜带与黄铜板螺钉连接,由于零散的紫铜带层次之间接触不完全,电阻偏大,烧结电极存在铜带发热、电压损耗严重的问题,为了保证紫铜带层与层之间完全接触,提高工作效率,本文引入一种铜带的处理方法为热压分子焊,热压分子焊就是大电流通过工件产生热量实现工件的无焊剂焊接,零散的紫铜带经过热压分子焊接后表现为块状,每片之间接触电阻几乎为零,电压损耗降低。应用于烧结压机导电电极进行试验。当输入功率一定时,通过对烧结压机有效烧结功率的对比分析,热压分子焊技术的应用可以实现有效烧结功率提高6%,而且后期维护费用低,外形美观。

Application of hot molecular welding on sintering press

The electrode structure of sintering press is scattered copper strips connected with brass sheets. Due to sporadic contact of copper strips, the resistance of electrode is too large that caused serious problems of copper strip heating and voltage loss . In order to ensure complete contact between copper layers and improve working efficiency, a copper strip treatment method is introduced in this paper--hot molecular welding. Hot molecular welding is workpiece welding without flux through heat produced by a high current . After hot molecular welding, the copper strips are welded and perform as a block; the contact resistance between each piece is almost zero, thus reducing the voltage loss. The hot molecular welding copper strips are applied in sintering press for test , compared with conditional ones , the electrode treated with the new technique led to an increase of effective sintering power of 6%. In addition, the post-maintenance cost is lower and the appearance is good.