公开(公告)号：US20120193327A1

公开(公告)日：2012-08-02

申请号：US13360967

申请日：2012-01-30

申请人： Hou KAN ,  Makoto Ota ,  Kohjiroh Nakanishi

发明人： Hou KAN ,  Makoto Ota ,  Kohjiroh Nakanishi

IPC分类号： B23K9/18

CPC分类号： B23K35/362 ,  B23K9/186 ,  B23K9/23 ,  B23K35/3053 ,  B23K35/3602 ,  B23K35/3605 ,  B23K35/3607 ,  B23K35/361 ,  B23K2103/04 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/14

摘要： Disclosed is a bonded flux and a solid wire for submerged arc welding, and a method for submerged arc welding of a low-temperature steel each of which gives a weld bead (weld metal) having excellent low-temperature fracture toughness with satisfactory weldability. The bonded flux includes 23-43% of MgO, 11-31% of Al2O3, 6-16% of CaF2, 7-20% of SiO2, 1.0-8.0% as CO2 equivalent of a metal carbonate, a total of 2-16% of CaO and/or BaO, 0.4-1.5% of metallic silicon, a total of 1.0-7.0% as titanium equivalent of metallic titanium and titanium oxide, a total of 0.01-0.20% as boron equivalent of metallic boron and/or boron oxide, and a total of 1.0-6.0% as equivalents of respective elements of at least one oxide of Na, K, and Li, and has a ratio ([Total Ti]+[Total B])/[SiO2] of from 0.05 to 0.55.

摘要翻译： 本发明公开了一种用于埋弧焊的粘结焊剂和实心焊丝，以及低温钢的埋弧焊接方法，其中具有优异的低温断裂韧性和良好的焊接性的焊缝（焊接金属）。 粘结焊剂包括23-43％的MgO，11-31％的Al2O3，6-16％的CaF2，7-20％的SiO2，1.0-8.0％的二氧化碳当量的金属碳酸盐，总共2-16 ％的CaO和/或BaO，0.4-1.5％的金属硅，总计为1.0-7.0％的钛当量的金属钛和氧化钛，总共为0.01-0.20％的硼当量的金属硼和/或硼 氧化物，并且总共为1.0-6.0％的Na，K和Li的至少一种氧化物的各元素的当量，并且比率（[Total Ti] + [Total B]）/ [SiO 2]为0.05 至0.55。