本申请涉及一种药芯带芯钎焊环、钎焊双环组合件，药芯带芯钎焊环由药芯钎料带围成的管状结构内包含一根钎料芯丝，药芯钎料带两侧末端与钎料芯丝连接，药芯钎料带与钎料芯丝之间空腔填充钎剂。所述药芯带芯钎焊环的外侧和或内侧为环状扁平面。钎焊双环组合件由上述药芯带芯钎焊环和内侧有对接缝隙的药芯扁环配合构成，药芯带芯钎焊环的内侧为环状扁平面。药芯带芯钎焊环的药芯钎料带两侧末端与钎料芯丝连接处朝外或朝下。本申请结构简洁，通过药芯带芯钎焊环的连接处缝隙以及药芯扁环的对接缝隙，在避免钎剂和空气接触反应的同时提高钎料和母材接触面及热传导效率，钎剂在加热反应后从缝隙中流出，优先到达母材表面，达到钎剂优先反应的效果。

The utility model relates to a medicine core belt carcass braze ring, dicyclo sub -assembly of brazing, medicine core belt carcass braze and contain a brazing filler metal core silk in the tubular structure that the ring encloses by medicine core brazing filler metal area, and medicine core brazing filler metal area both sides are terminal to be connected with brazing filler metal core silk, cavity packing borer agent between medicine core brazing filler metal area and the brazing filler metal core silk. Medicine core belt carcass braze the ring the outside with or inboard for cyclic annular flat horizontal surface. The ring sum inboard is brazed by above -mentioned medicine core belt carcass to the dicyclo sub -assembly of brazing has the flat ring of the medicine core cooperation in buttjoint gap to constitute, and the inboard of ring is brazed for cyclic annular flat horizontal surface to medicine core belt carcass. Medicine core belt carcass braze the medicine core brazing fillermetal area both sides of ring terminal with brazing filler metal core silk junction outwards or down. This application structure is succinct, through medicine core belt carcass braze junction gap andthe butt joint gap of the flat ring of medicine core of ring, improves brazing filler metal and mother metal contact surface and hot conduction efficiency when avoiding borer agent and air contact reaction, and the borer agent is being flowed out from the gap after adding the thermal response, and the preferential mother metal surface of arriving reaches the effect that the borer agent had priority and reacts.