Sincere welding wire
Sincere welding wire basically has two kinds: One kind is used at burying arc solder, another kind is used at fusing extremely active gas protects solder. The solder that bury arc carries out a standard to have GB/T5293-1999 with sincere welding wire, have low manganese welding wire, if H08A(is like the CHW-SG welding wire that Sichuan Atlantic company produces) cooperate welding flux of tall manganese fusion, use at the cop steel with mild steel and intensity inferior level to solder; In manganese welding wire, be like H08MnA, H10MnSi, cooperate welding flux of low fluorine of tall manganese tall silicon fusion to basically be used at cop steel to solder, can cooperate low manganese welding flux to be used at mild steel to solder; Tall manganese welding wire, if H08Mn2Si, H08Mn2SiA is used at cop steel to solder; Mn-Mo welding wire, be like H08MnMoA, HO8MnMoTiB, welding flux of the fluorine in the silicon in cooperating low manganese fusion, fluorine is alkaline model welding flux of agglomeration welding flux or silicon calcium agglomeration, basically spend the cop steel with higher level to solder with Yu Jiang. Welding wire diameter is in commonly less than of limits of 1.6 ～ 6.4mm.
Active gas protects solder to carry out a standard to have the level such as GB/T14947-1994, GB/T8110-1995, AWS5.18-93 and AWS5.28-96 with sincere welding wire, the most commonly used welding wire has H08Mn2SiA (if be equivalent to GB/T8110ER49-1) , it has good welder art function, appropriate at soldering the cop steel of 500MPa of σ S ≤ . Should solder when intensity level fastens taller steel to plant, should choose to contain the welding wire of Mo, for example, the welding wire of JM-68 of bright and beautiful peaceful of the JM-58 welding wire of homebred H10MnSiMo welding wire and the production of company of bright and beautiful peaceful that carry out beautiful GB to allow AWS5.18ER70S-G, BOHLERSG3-P welding wire and AWSA5.28ER80S-G of standard of executive United States. The norms of commonly used welding wire is 1.2mm of 1.0mm of φ 0.9mm, φ , φ to wait.
In recent years, as long be defeated by cop to change directional development towards high strenth, large requirements, large wall, traditional manual solder solders the method already was soldered gradually by semi-automatic solder and automatic solder methodological place is replaced, use development with semi-automatic solder among them most rapid, to it and those who come is medical core welding wire be able to swift and violent development.
Core welding wire can get medicine such attention and develop, a lot of characteristics with its oneself are not divided, expression is in: Frit apply rate is rapid, yield of solder deliver a child is high; Compare with photograph of solid core welding wire, electric arc of medical core welding wire is soft, splatter small, solder technical properties is good; Frit is deep big, shape beautiful; Integrated cost is low.
Medical core welding wire differs by what way protects when soldering can divide the protection that it is gas medical core welding wire and protect medical core welding wire oneself, protect medical core welding wire oneself among them with its peculiar advantage is growing in be defeated by conduit wide application, executive standard has GB/T17493-1998 and AWSA.29-98. Have have T8-Ni1 representatively model (for example welding wire of 2.0mm of Φ of HOBART81N1 of Hao Bai spy of welding wire of 2.0mm of Φ of JC-29Ni1 of Tianjin Jin Qiao, United States) , T8-Ni2, T8-K6 (welding wire of 2.0mm of Lincoln NR207 Φ ) etc, performance of operation of whole place of this kind of welding wire is good, frit apply rate is rapid, tenacity of welding line metal is good at the same time, but welding line metal is bulky below as welded columnar the occurrence that brilliant organizes, make tenacity of concussion of metal of its welding line is between as welded and heat treatment, multilayer welding and only way have very big difference between solder. Because this uses T8 model when from protection welding wire solders, should control strictly solder quantity of normative parameter, hot input, solder second and the ply of every solder layer.
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