Pd稀土合金与316L不锈钢的真空钎焊  

Vacuum Welding of Palladium-Rare Earth Alloys with 316L Stainless Steel

作　　者：李银娥[1] 李士江[1] 袁弘鸣[1] 田广民[1] 

机构地区：[1]西北有色金属研究院

出　　处：《稀有金属材料与工程》1997年第4期53-55,共3页Rare Metal Materials and Engineering

摘　　要：研究了Ｐｄ稀土合金与３１６Ｌ不锈钢的钎焊工艺，并选择了合适的钎焊料。结果表明，所选钎料ＡｇＣｕＰｄ２８－２，ＡｇＣｕＮｉ２６－３能很好地润湿两种母材，其α值均小于２０°，其中ＡｇＣｕＰｄ２８－２钎焊效果更好；接头抗剪切力分别达到６９００Ｎ和１１２０Ｎ，满足了使用要求。Ｐｄ稀土合金与３１６Ｌ不锈钢的钎焊工艺为：真空度应高于１０－３Ｐａ，将两种材料及钎料开始升温至７７０℃，保温３０ｍｉｎ，然后再升温至８２０℃，保温２０ｍｉｎ，降温至７９０℃，保温１０ｍｉｎ，随炉冷却。Vacuum welding of palladium-rare earth alloys with 316L stainless steel and welding alloys have been investigated It has been shown that AgCuPd 28-2 , AgCuNi 26-3 brazing alloy selected can wet two base metals (palladium-rare earth alloy and 316L stainless) very well and wetting angle α is less than 20° The effect of AgCuPd 28-2 welding filler is much better Shear stress values of welded joint are 6 900 and 1 120N for AgCuPd 28-2 and AgCuNi 26-3 , respectively, which meet the requirements of application The welding process is as follows: Weldment (Pd alloy and 316L) and welding wire(AgCuPd 28-2 or AgCuNi 26-3 )are heated for 30 min at 770℃ and for 20 min at 820℃ in a vacuum (10 -3 Pa), then preserved for 10 min at 790℃ Finally, the weldment is cooled in the furnace

关 键 词：钎焊 钎焊料 稀土合金 不锈钢 真空钎焊 

分 类 号：TG454[金属学及工艺—焊接]