焊接专业词汇1

1、Aactual weld-throat thick-ness焊缝厚度all-around weld (整周焊缝)环焊缝angle butt weld斜对接焊angle weld角焊appearance of weld焊缝成形arc-seam weld电弧缝焊arc-spot weld电弧点焊arc-weld电弧焊arc welding 弧焊aspect ratio of weld焊缝成形系数at weld edge在焊缝边上attachment weld连接焊缝automatic spot weld自动点焊法automatic weld自动焊接axis of a weld焊缝中心线; 焊接轴线

2、axis of weld焊缝轴线; 焊接轴线arc seam weld电弧缝焊缝arc spot weld 电弧焊点arc strike 碰弧asbrazed 钎接态aswelded 焊态argon (shielded) arc welding氩弧焊接argon tungsten-arc welding钨极氩弧焊argon-arc welding氩弧焊argonaut welding自动氩弧焊atomic H welding氢原子焊atomic hydrogen welding原子氢焊atomic-hydrogen welding原子氢焊接austenite welding不锈钢焊接autog

3、enous pressure welding自动压合热焊autogenous welding气焊automatic arc welding head自动电弧焊接机头automatic arc welding machine自动电焊机; 自动弧焊机automatic drying line for welding electrode电焊条自动烘焙线automatic slag pool welding自动电渣焊automatic spot welding自动点焊automatic submerged arc welding自动埋弧焊automatic submerged slag welding

4、 of rail钢轨自动埋弧电弧焊automatic submerged-arc welding machine埋弧自动焊机automatic transverse welding横向自动焊automatic welding自动焊; 自动焊接automatic welding head自动焊头automatic welding machine自动焊接机automatic welding of circumferential seams环缝自动焊automatic welding process自动焊接工艺规程automation of welding焊接自动化arc-welded pipe弧焊

5、管arc-welded steel pipe电弧焊接钢管around openings for welded attachments环绕焊接附件孔口as welded焊态as-welded焊后状态automatic arc welded tube自动电弧焊缝管air-acetylene welding空气-乙炔焊接argon arc welding 氩弧焊automatic slag-pool welding 自动电渣焊aircomatic welding 自动调弧氩弧焊, 惰性气体保护金属极弧焊aluminothermic welding 铸焊, 铝热剂焊接austenite welding

6、 不锈钢(焊条)焊接automatic submerged arc welding 自动埋弧焊argon shielded arc welding 氩护电弧焊all-welded全焊接all-welded construction全焊结构automatic spot weld 自动点焊法AC & D. C. arc welding machine交直流弧焊机AC arc welding交流电弧焊AC gas metal-arc welding process交流熔化极气保护焊AC gas tungsten arc welding交流钨极气保护焊AC welding set交流焊机; 交

7、流焊接变压器AC-dc welding machine交直流两用焊机acetylene welding气焊; 乙炔焊; 乙炔焊接acetylene welding torch乙炔焊炬; 乙炔接焊吹管air-acetylene welding空气-乙炔焊接all-position welding全位置焊接alloy steel gas welding rod合金钢气焊条alternating current arc welding交流电弧焊alternating current welding machine交流电焊机aluminium alloy arc welding electrode铝合

8、金焊条aluminothermic welding铝热焊; 铸焊angle backwards welding后倾焊axial bend test纵弯试验angle butt welding斜口对接焊angle forwards welding前倾焊annealing welding wave退火焊波antogenous welding氧炔焊apparatus for butt welding平接压焊夹具arc braze welding电弧钎焊arc flash welding电弧闪光焊arc spot welding电铆焊arc stud welding柱钉电弧焊; 螺柱电弧焊arc vo

9、ltage feedback controlling arc welding弧压反馈电弧焊arc welding电弧焊; 电弧焊接; 弧焊arc welding electrode电弧焊条arc welding generator电弧焊接用发电机; 弧焊发电机arc welding generator with independent excitation自激弧焊发电机; 他激电焊发电机arc welding generator with self-excitation自激电焊发电机arc welding machine弧焊机; 电焊机; 电弧焊机arc welding mask电弧焊遮罩ar

10、c welding process电弧焊接工艺过程arc welding rectifier弧焊整流器arc welding robot弧焊机器人arc welding set电弧焊机组arc welding transformer弧焊变压器arc-welding electrode电弧焊用焊条arc-welding plant电焊厂arcogen welding电弧氧乙炔焊air-acetylene welding空气-乙炔焊接aircomatic welding自动调弧氩弧焊, 惰性气体保护金属极弧焊aluminothermic welding铸焊, 铝热剂焊接argon arc weld

11、ing氩弧焊argon shielded arc welding氩护电弧焊austenite welding不锈钢(焊条)焊接automatic slag-pool welding自动电渣焊automatic submerged arc welding自动埋弧焊Bback of weld焊缝背面back gouging 背面清根backing 衬垫backing gas 背面保护气base metal 母材backing groove of weld焊缝反面坡口backing weld底焊; 底焊焊缝bare metal arc weld裸焊条电弧焊bead weld珠焊; 堆焊bead-on

12、-plate weld堆焊焊缝beading weld凸焊beam-to-beam weld梁间焊接; 梁式引线焊接block sequence weld分段多层焊bond weld钢轨接头焊接bridge seam weld桥缝焊接; 桥线焊brize weld硬焊braze 钎接接头brazer 钎接工brazing 硬钎焊butt weld对接焊缝butt weld ends对头焊接端butt-weld碰焊; 平式焊接; 对头焊接butt-weld in the downhand position对接平焊butt-weld joint对头焊接butt-weld pipe mill对焊管轧

13、机button spot weld按电钮点焊back hand welding后退焊; 反手焊接back step welding反手焊接back ward welding反手焊接back welding底焊; 退焊法back-step welding分段退焊法backhand welding逆向焊; 右焊法; 后焊法; 向后焊backing welding打底焊backstep welding分段逆焊; 分段退焊; 反向焊; 逐步退焊法; 逆向焊backstep welding sequence分段退焊次序backward welding后倾焊; 后退焊; 向右焊balanced weldi

14、ng对称焊bare welding rod光焊条bare wire arc welding光焊丝电弧焊bead welding窄焊道焊接bench arc welding machine台式弧焊机bevel welding斜角焊blacksmith welding锻工焊接; 锻焊block sequence welding分段多层焊; 分段连续焊接block welding块焊接big diameter welded tube大口径焊缝管blacksmith welded joint煅接接头butt welded (bw)对焊机butt welded seam对焊缝butt-welded dr

15、ill对头焊接钻头butt-welded joint对焊接头butt-welded pipe对缝焊接管butt-welded rail ends对焊轨端butt-welded tube对缝焊管; 对焊钢管; 对口焊接钢管butt-welded with square ends方头对焊braze welding硬焊, 铜焊, 钎焊butt welding对接焊, 对焊butt weld对接焊缝blasting welding factory爆破焊接厂braze welding 硬焊, 铜焊, 钎焊butt welding 对接焊, 对焊butt weld 对接焊缝backing run; bac

16、king weld打底焊道block welding sequence分段多层焊body welding machine罐身焊接机both sides welding双面焊接brass welding rod黄铜焊条braze welding钎焊; 钎焊接; 钎接; 铜焊braze-welding钎接焊bridge spot welding带接合板点焊; 单面衬垫点焊; 单面搭板点焊bridge welding桥接焊; 盖板焊brize welding硬焊build (built) up welding堆焊build-up welding堆焊building-up by welding堆焊bu

17、tt resistance welding电阻对焊; 对接电阻焊butt seam welding对接滚焊butt seam welding machine对接缝焊机butt welding对接焊; 平对焊butt welding machine对接焊机butt welding process对接焊法butt-welding对接焊butt-welding machine对焊机Ccap weld最后焊层; 盖面焊缝carbon content of weld materials焊接材料的碳含量cast-weld construction铸焊结构caulk weld填缝焊contour weld

18、特形焊接concave fillet weld 凹角焊carbon arc weld 碳极弧焊capability of welding vertically upwards直上焊接能力capacitor-discharge welding电容放电焊接carbon arc welding碳弧焊; 碳极弧焊carbon in materials for welding焊接用材料中的碳carbon-dioxide arc welding二氧化碳保护焊carriage of automatic welding machine自动焊机走架cascade welding阶梯式焊; 山形多层焊cascad

19、e welding sequence串级叠置法cast welding铸焊concave fillet weld凹形角焊缝carbon arc weld碳极弧焊concave fillet weld凹角焊contour weld特形焊接cement-welding金属陶瓷焊接centralized installation of welding machine多站焊接chain intermittent fillet welding并列断续角焊缝; 链式断续角焊chemical welding化学焊circular seam welding环缝对接焊circular seam-welding

20、machine环形滚焊机cleaning before welding焊接前的清理cleaning of welding deposits焊接沉积的清理closed butt gas pressure welding闭式加压气焊cold welding冷焊; 冷压焊cold-pressure welding冷压焊combined cutting and welding torch焊割两用炬combined cutting and-welding blow-pipe焊割两用炬combined thermit welding加压铸焊complete penetraction and fusion

21、in welding全焊透complete fusion 完全熔合caulking weld密实焊缝chain intermittent fillet weld链式分段角焊; 并列间断角焊缝chain intermittent weld并列焊接circular weld环形焊缝circumferential weld环缝; 环焊缝cleft weld裂口焊closed weld底边无缝焊; 无间隙焊缝closed-chamber fusion weld闭室熔焊cluster weld丛聚焊缝coil weld 卷板对接焊; 卷板对接焊; 板卷焊cold weld 冷压接commutator-c

22、ontrolled weld 换向控制焊接complete penetration butt weld 贯穿对焊composite weld 紧密焊缝; 强度密封焊缝concave filled weld 凹形角焊缝concave filler weld 凹角焊concave fillet weld 凹面填角焊concave weld 凹焊缝; 凹面焊; 凹形焊缝; 轻型焊connective weld 联系焊缝continuous butt-weld mill 连续式炉焊管机组continuous fillet weld连续(填)角焊缝; 连续角焊缝; 连续贴角焊continuous wel

23、d 连续焊缝continuous weld process连续式炉焊管法contour weld 特形焊接convex fillet weld 凸角焊缝; 凸形角焊缝convex weld 凸焊缝; 凸形焊缝copper weld wire 包铜钢丝corner flange weld 单卷边角焊缝corner weld 角焊 corner-flange weld 卷边角焊缝; 卷边角焊缝 crack of weld 焊部裂纹 cross weld十字交叉焊缝; 横向焊缝 cross-wire weld十字焊 crotch weld 楔接锻接;

24、 楔接焊接 cup weld 带盖板焊缝 condenser (discharge) spot-welding machine 电容器放电点焊机 condenser discharge spot welding 电容储能点焊; 电容贮能点焊 constant current welding machine 恒流电焊机 constant energy welding machine 恒功率电焊机 constant voltage welding machine 恒压电焊机 constant-current arc weldin

25、g power source 垂降特性弧焊电源 constant-current welding source 恒流式焊接电源 constant-power welding source 恒功率式焊接电源 constant-pressure pressure welding 恒压压力焊 constant-temperature pressure welding恒温压力焊 constant-voltage welding machine恒电压焊机 constant-voltage welding source恒压式焊接电源; 平特性焊接

26、电源 consumable electrode welding 熔化极电弧焊 consumable guide electroslag welding自耗定向电渣焊 contact welding 接触焊 continuous feed welding 连续送丝电弧焊 continuous welding 连续焊; 连续焊接 contour welding 绕焊 controlled arc welding 可控电弧焊接 controlled atmosohere arc welding 充气室电弧焊 c

27、ontrolled atmospere arc welding 充气式电弧焊 controlled tungsten-arc welding 自动控制弧长的钨极电弧焊 controlled-transfer welding 可控过渡电弧焊 convex fillet welding 凸面角焊缝 copper arc welding electrode 铜焊条 copper welding rod 铜焊条 copper-alloy arc welding electrode 铜合金焊条 copper-aluminium wel

28、ding rod 铜铝焊条 copper-nickel welding rod 铜镍焊条 copper-silicon welding rod 铜硅焊条 copper-tin welding rod 铜锡焊条 copper-zinc welding rod 铜锌焊条 core welding-wire 焊芯 core wire for welding rod 焊条芯线 corrosion due to welding 焊接腐蚀 cosmetic welding 盖面焊 cover chain weldin

29、g 链节式药皮包丝焊接 CO2 arc welding machine 二氧化碳弧焊机 cracking test for automatic welding 自动焊抗裂试验 crankshaft flashbutt welding 曲轴电阻弧花压焊 cross welding 横向焊缝 cyc-arc welding 圆环电弧焊 cast welded rail joint 铸焊钢轨接头 continuous welded rail 连续焊接钢轨 carbon arc welding 碳弧焊 carbo

30、n dioxide gas arc welding二氧化碳气体保护焊 D depth of weld焊接深度 dissimilar weld metal不同的焊接金属; 不同金属的焊接 distance between the toes of a weld焊缝宽度 double groove weld双面坡口焊缝 double-bevel groove weld双斜边坡口焊缝; 双斜坡口焊 double-flanged butt weld双弯边对接焊缝 double-V groove weld双斜边坡口焊缝; 双斜

31、坡口焊 downhand weld平焊缝 duplex spot weld双点点焊接头 deck welding重力焊 double fillet welded T-joint双面丁字形焊接 double-welded butt joint双面焊对接接头 double-welded lap joint双面焊搭接接头 deep fillet welding深熔角焊 downhand welding俯焊 downward welding平焊, 俯焊 downhand weld 平焊缝 do

32、uble-bevel groove weld 双斜边坡口焊缝, K形坡口焊缝 deep fillet welding深角焊 deep penetration welding深熔焊 deep penetration welding electrode深熔焊条 deep welding深焊 die welding模焊; 冲模堆焊 diesel engine driven DC arc welding machine柴油机驱动直流弧焊机 differential-excited welding generator差激电焊发电机&#

33、160;diffusion welding扩散焊接 direct spot welding双面点焊 direct welding双面点焊 direction of welding焊接方位; 焊接方向 discontinuous welding断续焊 dot welding点焊 double carbon-arc welding间接碳弧焊 double side welding双面焊接 down-hand welding俯焊 downhand welding平焊 downward welding

34、in the inclined position下坡焊 downward welding in the vertical position向下立焊 dual-arc welding双弧焊 double-bevel groove weld双斜边坡口焊缝, K形坡口焊缝 downhand weld平焊缝E edge joint weld边缘焊 edge weld端接焊; 端接焊缝; 端面焊缝; 对边焊 electric resistance weld mill电阻焊管机 electric weld-pipe mill电

35、焊管机 groove weld坡口焊; 坡口焊缝; 有坡口焊缝; 凹槽焊 electric-weld pipe mill电焊管机 emporary weld临时点定焊缝 excess weld metal焊缝补强金属; 补强; 补强焊料; 补强金属 excess weld metal(焊缝的)余高 explosive weld爆炸焊接 electric welded anchor cable电焊锚链 electric welded steel pipe电焊钢管 electric-resistance-we

36、lded steel pipe电阻焊钢管 electric-welded pipe电焊管 electrically welded tube电焊管 expanded and welded tube joint胀焊 electric butt welding welding电阻接触焊 electrogas welding气电焊 electrogas flux-cored welding气电管状焊条焊接 electro-beam welding电子束焊接 electrode electrical arc welding电

37、弧焊 electron-bombardment welding真空电子束焊 electronic arc welding直流电弧焊 electrons leaves welding电子束焊接 electropercussive welding电冲击焊, 电接触焊, 电点焊 electroslag welding电渣焊 electrostatic percussion welding静电焊接 eutectic welding低温焊 exothermic welding铝热焊 edge seam weldin

38、g端面接头滚焊 edge welding边缘焊接 edgewise welding沿边焊接 electric and pressure welding电压力焊接 electric arc spot welding电弧点焊 electric arc welding generators电弧焊接发电机 electric arc welding machine电弧焊机 electric butt welding电阻接触焊 electric resistance welding电阻焊接; 热电阻焊 electri

39、c slag welding电渣焊 electric spot welding电点焊 electric welding电焊 electric welding cast copper solder铸铜电焊条 electric welding equipment电焊设备 electric welding generator电焊发电机 electric welding hammer电焊锤 electric welding machine电焊机 electric welding plant电焊厂 electric

40、 welding pliers电焊钳 electric welding rod电焊条 electric welding strip电焊片 electric-arc welding电弧焊 electric-resistance seam-welding电阻缝焊 explosive welding爆炸焊接 edge weld端接焊缝 explosive weld 爆炸焊接 explosive weld爆炸焊接Fface of weld焊缝表面; 焊接面fibrous weld纤维状焊缝field weld现场焊接fil

41、ler weld填角焊缝fillet weld角焊缝; 填角焊; 贴角焊fillet weld in normal shear (搭接接头的)正面角焊缝fillet weld in parallel shear侧面角焊缝; 侧面填角焊fillet weld in the flat position角接平焊; 水平角焊缝fillet weld in the horizontal position横向角焊缝fillet weld size焊角尺寸; 填角焊缝尺寸flame weld火焰焊接flange weld卷边焊缝; 卷边焊缝flange-to-web weld卷边焊缝; 卷边焊缝flange

42、d butt weld弯边对接焊flanged edge weld卷边焊; 卷边焊flash butt weld闪光焊flash weld闪速对焊flat faced fillet weld平顶角焊缝焊接flat fillet weld平角焊ing of fillet weld角焊缝平焊; 船形角焊flush fillet weld平角焊flush weld削平补强的焊缝; 平焊接; 无加强高的焊缝forge weld锻焊焊缝forged weld (焊后锻压的)锻压焊缝form factor of the weld焊缝成形系数formation of weld焊缝成形front fillet

43、 weld正侧面填角焊缝; 正面填角焊front(al) fillet weld正面角焊缝full fillet weld满角焊缝; 全角焊full penetration butt weld满对接焊full weld满焊 full-fillet weld满角焊 full-sized weld全尺寸焊缝 full-strength weld (与母材等强)等强焊缝fillet welding (填角焊)贴角焊 fillet welding in the downhand position船形角焊 fillet welding in the fl

44、at position船形焊 fillet welding in the horizontal position横角焊 fillet welding in the vertical position立角焊 fine welding精密焊接 fine wire welding细丝焊 fire cracker welding躺焊 fire welding锻焊; 锻接 fixed welding machine固定式焊机 fixed-position welding定位焊接 flame welding熔气焊&#

45、160;flare welding喇叭形坡口焊接 flash butt welding闪光对焊; 闪光对接焊 flash welding闪光电弧焊; 闪光焊; 闪焊; 火花电弧焊; 火花对焊 flash-butt welding电阻闪光焊接 flashover welding闪光焊 flat position welding平焊; 顶面平卧焊 flat position welding of fillet weld角焊缝平焊; 船形角焊 flat welding平卧焊 flexible welding rod软焊条

46、 flexible wire for electric welding电焊软线 flow welding流注焊接; 浇焊 fluid welding流焊 flux-cored welding包芯焊条焊接 fly-wheel type friction welding贮能摩擦焊; 储能摩擦焊 flywheel friction welding惯性摩擦焊 forehand welding向前焊; 向左焊; 左焊法; 左向焊; 正手焊 forge welding锻焊; 锻接焊 forward welding正手

47、焊; 左焊法; 左向焊; 前进焊; 前倾焊; 向前焊 friction welding摩擦焊; 摩擦焊接 friction welding machine摩擦焊接机 frontal fillet welding正面角焊 full automatic welding全自动焊 full-automatic arc welding全自动电弧焊 full-fillet welding满角焊 full-fusion thermit welding热剂铸焊 full-fusion welding全熔合焊 full-l

48、ength welding满焊 fusion pressure welding熔化压接 fusion thermit welding热剂熔焊; 熔化铝热焊 fusion type plasma arc welding熔透型等离子弧焊 fusion type welding熔透型焊接法 fusion welding熔焊接 fillet welded joint填角焊缝 forge-welded (monolayered) cylinder锻焊式单层圆筒forged and welded vessel锻焊式容器fine weld

49、ing精密焊接fine wire welding细丝焊接fire cracker welding躺焊fixed-position welding定位焊接flare welding喇叭形坡口焊接flash butt welding闪光对接焊flat position welding(顶面)平卧焊flux-cored welding包芯焊条焊接flat position of welding平焊位置forehand welding顺手焊接foreward welding左焊法fusion welding熔焊fusion pressure welding熔化压接fusion thermit weld

50、ing熔化铅热焊furnace butt-welded pipe对接炉焊管flywheel type friction welding; inertia welding储能摩擦焊fusion welding metal熔焊金属fabrication weldability工艺焊接性G gap weld特殊点焊; 双极单点焊 gas-pressure weld气压焊 girth weld环形焊缝 gravity weld倚焊 groove-weld joint有坡口焊接接头 galvanized and welded steel pip

51、e镀锌焊缝钢管 galvanized electric welded mesh镀锌电焊网 galvanized welded tube镀锌焊缝管 galvanized welded wire mesh镀锌电焊网 gas welded joint气焊接头 guided-bend test for butt welded joint对接接头靠模弯曲试验 gas-electric welding气电联合焊接 gas metal arc welding气体保护金属极电弧焊, 熔化极气体保护焊 gas shielded ar

52、c welding气体保护焊, 气体保护弧焊 gas shielded magnetic flux arc welding磁性焊剂气体保护焊 gas torch welding炬焊 gas tungsten arc welding钨电极惰性气体保护焊 girth welding环缝焊接 gravity welding重力焊, 重力式电弧焊 gas carbon-arc welding气保护碳弧焊 gas electric welding气电联合焊接 gas metal arc welding气体保护金属极电弧焊&#

53、160;gas metal-arc welding气保护金属极电弧焊 gas shield welding气体保护弧焊 gas shielded arc welding气体保护电弧焊; 气体保护焊 gas shielded arc welding machine气保护弧焊机 gas shielded arc-welding machine气体保护弧焊机 gas shielded magnetic flux arc welding磁性焊剂气体保护电弧焊 gas shielded metal-arc welding气体保护金属弧焊

54、0;gas shielded welding气体保护焊 gas torch welding气炬焊 gas tungsten arc welding气体保护钨极电弧焊 gas tungsten-arc welding气保护钨极电弧焊 gas tungstun arc welding钨极气体保护焊 gas welding气焊; 乙炔焊 gas welding device气焊设备 gas welding equipment气焊设备 gas welding machine气焊机 gas welding outf

55、it气焊机 gas welding rod气焊焊丝 gas welding rubber hose气焊橡胶管 gas welding technique气焊工艺 gas welding torch butt气焊进气硬管 gas welding tube mill瓦斯焊接机 gas welding work气焊工作 gas-arc welding气电焊; 气体保护电弧焊 gas-arc welding gun气电焊焊嘴 gas-press welding气压焊 gas-pressure weldi

56、ng machine气压焊接机 gas-shielded stud welding气保护柱钉焊接 girth welding环缝横向焊接 gravity type arc welding重力焊 gravity type welding倚焊 gravity welding重力焊; 重力式电弧焊 groove welding槽焊; 坡口焊; 开槽焊 guided automatic welding导向自动焊接 gun welding machine手提式点焊机; 点焊枪 gas-pressure weld 气

57、压焊 groove weld 坡口焊 gas-pressure weld气压焊 groove weld坡口焊H hammer weld锻焊 hand weld手焊焊缝 height of reinforcement of weld加强焊缝高度 helical-weld pipe螺旋焊管 high performance weld flux高性能焊剂 horizontal fillet weld横向角缝焊接 horizontal weld横向焊缝 horizontal-vertical

58、fillet weld横向垂直角焊缝 hot weld encapsulation热焊封袋 hydraulic automatic weld液压自动焊接 hydraulic weld process液压焊接法 horizontal bend test横弯试验 handhole with butt welded flange对焊法兰手孔 helically welded tube螺旋焊接管 helically-welded case螺旋焊接壳体 high frequency welded spiral fin tub

59、e高频焊接 high strength welded pipe高强度焊接管 high strength welded steelpipe高强度焊接钢管 high-frequency electric welded steel pipe高频电焊钢管 high-frequency straight seam welded pipe高频直缝焊接钢管 holes in joints of welded vessels焊接容器接头处的孔 hammer welding锻接hard facing arc welding表面加硬电弧焊heated-t

60、ool welding热烙铁焊接helium shielded welding氦气保护焊接hidden arc welding潜弧焊, 埋弧焊high-frequency induction welding高频感应焊接horizontal fillet welding水平角焊接horizontal-rolled-position welding滚动水平焊, 水平转动焊接hydrogen atomic welding原子氢焊接high strength weldable aluminium alloy高强度可焊铝合金属high strength weldable aluminium alloy高

61、强度可焊铝合金hafnium welding wire铪焊丝hammer welding锻焊; 锻接; 锤焊hammered resistance welding锤锻电阻焊; 电阻加热锻焊hand welding holdet手焊焊把hard-welding硬质合金熔焊hammer welded pipe锻焊管heliarc weld氦弧焊horizontal position of welding横焊位置Iinclined weld斜焊intermittent fillet weld断续角焊缝inert gas carbon-arc weld惰性气体保护碳弧焊接inert gas metal-ar