(a) Txhua tus kws tsim khoom lag luam uas koom nrog hauv cov kav raj xa dej yuav tsum tuav daim ntawv pov thawj ua haujlwm. Lub peev xwm ntawm vuam yuav tsum ua raws li cov kev tsim nyog tau txais hauv kev kuaj xyuas kev tsim nyog. Kev cob qhia tshwj xeeb thiab kev kawm yuav tsum tau ua ua ntej vuam. Tsuas yog cov welders uas dhau qhov kev ntsuam xyuas vuam tuaj yeem pib ua haujlwm. vuam.
(b) Pipeline welding yuav tsum tau ua nruj me ntsis raws li cov txheej txheem vuam pom zoo.
(c) Argon arc vuam yog siv los ua lub hauv paus rau cov kav raj xa dej, thiab lub hau npog tau ntim nrog tag nrho cov kav dej tsis siv neeg vuam tshuab.
(d) Tom qab argon arc vuam tiav lawm, siv lub tshuab DC vuam los txuas ob txheej. Lub weld seam yuav tsum sib xws, thiab cov pob qij txha ntawm cov khaubncaws sab nraud povtseg yuav tsum staggered. Lub thickness ntawm txhua txheej ntawm weld seam yuav tsum yog 0.8-1.2 npaug ntawm txoj kab uas hla ntawm vuam pas nrig, thiab tsis muaj qhov arc raug ntaus rau ntawm qhov chaw uas tsis yog vuam. Tom qab lub vuam ntawm txhua txheej tiav, lub npoo slag thiab spatter yuav tsum tau muab tshem tawm (sib tsoo tshuab siv tau). Yog hais tias weld seam tsis sib npaug thiab muaj trachoma, nws yuav tsum tau av thiab rov welded. Qhov vuam ceev yuav tsum tsis sib xws thiab qhov zoo ntawm qhov vuam seam yuav tsum tau lav.
(e) Txhua lub vuam sib txuas yuav tsum tau welded tsis tu ncua los ntawm ib tug welder nyob rau hauv ib lub sij hawm, thiab pib txoj hauj lwm ntawm weld hlaws nruab nrab ntawm cov khaubncaws sab nraud povtseg yuav tsum staggered.
(f) Tom qab lub vuam tiav lawm, txheej txheej, slag thiab spatter rau saum npoo ntawm vuam yuav tsum tau muab tshem tawm. Thiab muab tso rau ntawm lub welder lub steel foob code cim Lub code yuav tsum nyob rau hauv downstream ntawm lub weld, 50 hli deb ntawm lub weld
(g) Cov welds tsis tsim nyog yuav tsum tau kho, thiab qhov hnav yuav tsum tau txiav nrog lub kaum sab xis, thiab cov vuam yuav tsum rov ua dua. Qhov ntev ntawm vuam yuav tsum tsis pub tsawg tshaj 50mm. Thaum ib feem yog reworked ntau tshaj ob zaug, lub vuam sib txuas yuav tsum tau txiav tawm thiab reassembled rau vuam.
