本发明涉及一种自带钎剂型钎料环及其制备方法，由钎料内芯、金属涂层、中间活性层和防潮外层组成，所述金属涂层镀覆在钎料内芯的外表面，中间活性层包覆在金属涂层外部，防潮外层粘附在中间活性层外部，钎料内芯为簧状钎料，金属涂层为镀锡层或镀铟层，中间活性层为高活性钎剂，防潮外层为有机粘接剂。本发明的自带钎剂型钎料环与现有自带钎剂型钎料对比，只有防潮外层含有碳残留低的有机粘接剂，大大减少了有机粘接剂的使用，大大减轻了钎焊时粘接剂燃烧产生有害气体，保证了操作员的身体健康，减轻了环境污染，非常环保，同时避免了碳残留在钎缝中产生的夹杂，提高了钎焊可靠性。

The invention relates to a self-contained flux type solder ring and a preparation method thereof. It is composed of a solder core, a metal coating, an intermediate active layer and a moisture-proof outer layer. The metal coating is plated on the outside of the solder core. On the surface, the middle active layer covers the outside of the metal coating, the moisture-proof outer layer adheres to the outside of the middle active layer, the inner core of the solder is spring-shaped solder, the metal coating is a tin-plated layer or an indium-plated layer, and the middle active layer is Highly active flux, and the moisture-proof outer layer is an organic adhesive. Compared with the existing self-contained flux-type solder ring of the present invention, only the moisture-proof outer layer contains organic binder with low carbon residue, which greatly reduces the use of organic binder and greatly reduces brazing. When the adhesive burns to produce harmful gases, it ensures the health of the operator, reduces environmental pollution, is very environmentally friendly, and at the same time avoids the inclusion of carbon residues in the brazing seam, and improves the reliability of brazing.