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公开(公告)号：US20130277337A1
公开(公告)日：2013-10-24
申请号：US13731927
申请日：2012-12-31
申请人： Akihisa Murata
发明人： Akihisa Murata , Manabu Tanaka , Shigeru Nakayama
IPC分类号： B23K9/16
摘要： The constricting nozzle of the present invention includes (i) a cylindrical nozzle body disposed around the forward end of the tungsten electrode rod concentrically with the tungsten electrode rod and defines an annular high-speed gas passage between the nozzle body and the outer peripheral surface of the forward end of the tungsten electrode rod, (ii) a plurality of positioning projections that are protrudently formed on the inner peripheral surface of the nozzle body with predetermined intervals in the circumferential direction and that are arranged along the longitudinal direction of the nozzle body to hold the tungsten electrode rod in the center position of the nozzle body, and (iii) a plurality of gas-flow regulating grooves formed between the positioning projections and that extend in parallel in the longitudinal direction of the nozzle body and regulate the shielding gas (G) flowing through the high-speed gas passage.
摘要翻译： 本发明的收缩喷嘴包括（i）圆筒形喷嘴体，其与钨电极棒同心地设置在钨电极棒的前端周围，并且在喷嘴体和外周面之间限定环形的高速气体通道 钨电极棒的前端，（ii）多个定位突起，其突出地形成在喷嘴体的内周面上，在周向上以规定间隔沿着喷嘴体的长度方向配置， 将钨电极杆固定在喷嘴体的中心位置，（iii）多个气流调节槽，形成在定位突起之间，并且在喷嘴体的纵向上平行延伸并调节保护气体 G）流经高速气体通道。
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公开(公告)号：US09597745B2
公开(公告)日：2017-03-21
申请号：US13731927
申请日：2012-12-31
申请人： Akihisa Murata
发明人： Akihisa Murata , Manabu Tanaka , Shigeru Nakayama
摘要： The constricting nozzle of the present invention includes (i) a cylindrical nozzle body disposed around the forward end of the tungsten electrode rod concentrically with the tungsten electrode rod and defines an annular high-speed gas passage between the nozzle body and the outer peripheral surface of the forward end of the tungsten electrode rod, (ii) a plurality of positioning projections that are protrudently formed on the inner peripheral surface of the nozzle body with predetermined intervals in the circumferential direction and that are arranged along the longitudinal direction of the nozzle body to hold the tungsten electrode rod in the center position of the nozzle body, and (iii) a plurality of gas-flow regulating grooves formed between the positioning projections and that extend in parallel in the longitudinal direction of the nozzle body and regulate the shielding gas (G) flowing through the high-speed gas passage.
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