钎焊时要想获得优质钎焊接头,除了正确的工艺参数(真空度、钎焊温度、保温时间)起决定作用之外,下列因素也会严重影响钎焊质量。一、钎焊间隙它的大小直接决定着钎缝致密性及强度。间隙太大,毛细作用丧失,钎料填充困难,钎缝的合金化作用弱,形成接头机械性能较差。尤其对于两端开阔的接头(如图1),液态钎 In order to obtain high-quality brazed joints when brazing, in addition to the correct process parameters (vacuum, brazing temperature, holding time) play a decisive role, the following factors can also seriously affect the quality of brazing. First, the size of brazing gap directly determines the size and strength of brazing seam. The gap is too large, the loss of capillary action, brazing filler metal difficulties, solder joint weak alloying, poor mechanical properties of joints. Especially for both ends of the open connector (Figure 1), liquid brazing