在高温钎焊中,例如不锈钢的钎焊,往往因钎焊结构本身形状关系,有的地方需要钎焊,有的地方则不需要钎焊。在钎焊过程中,为了不使钎料流到不需要钎焊的地方,就要用阻流剂来控制钎料流动。过去在很长一段时间里,使用的阻流剂是:氧化铝、氧化铬、氧化钛或氧化镁。这些阻流剂在涂到待钎焊工件上之前,要混以粘料,如丙烯酸类 In high-temperature brazing, such as stainless steel brazing, often due to the shape of the brazed structure itself, in some places need to braze, and in some places do not need brazing. In the brazing process, in order not to flow the brazing material to the place which does not need brazing, it is necessary to use a flow control agent to control the brazing material flow. In the past for a long time, the use of the flow agent is: alumina, chromium oxide, titanium oxide or magnesium oxide. These flow-aids are mixed with a binder such as acrylic before they are applied to the workpiece to be brazed