本发明涉及焊材领域，具体的说是一种防潮且防锈的药皮钎料环及其制备方法。包括钎料内芯、镀附在钎料内芯外周的金属涂层、包覆在金属涂层外周的高活性钎剂层、包覆在高活性钎剂层外周的弱吸潮钎剂层以及粘附在弱吸潮钎剂层外周的防潮外层；所述钎料内芯为簧状钎料，所述金属涂层为镀锡层或镀铟层，所述高活性钎剂层采用QJ102银焊粉制作，所述弱吸潮钎剂层采用FB308S银焊粉制作，所述防潮外层采用有机粘结剂材料制作。本发明的钎料环换能够避免钎料内芯腐蚀、钎剂活性强。

The invention relates to the field of welding materials, in particular to a damp-proof rustproof coating solder ring and a preparation method of the damp-proof rustproof coating solder ring. The damp-proof rustproof coating solder ring comprises a solder inner core, a metal coating, a high-activity soldering flux layer, a weak dampness absorption soldering flux layer and an outer damp-proof layer,wherein the periphery of the solder inner core is plated with the metal coating, the periphery of the metal coating is coated with the high-activity soldering flux layer, the periphery of the high-activity soldering flux layer is coated with the weak dampness absorption soldering flux layer, and the outer damp-proof layer adheres to the periphery of the weak dampness absorption soldering flux layer; and the solder inner core is spring-shaped solder, the metal coating is a tin coating or an indium coating, the high-activity soldering flux layer is made of QJ102 silver soldering powder, the weak dampness absorption soldering flux layer is made of FB308S silver soldering powder, and the outer damp-proof layer is made of an organic binding agent material. The solder ring can prevent the solder inner core from being corroded, and the soldering flux activity is high.