Q1: Dab tsi welding txheej txheem feem ntau yog siv rau teb girth vuam ntawm X42 yeeb nkab?
A:Shielded Hlau Arc Vuam (SMAW los yog "stick welding") yog ntau heev. Rau cov haujlwm loj, cov txheej txheem siv tshuab xws li Gas Metal Arc Vuam (GMAW) lossis Flux-Cored Arc Vuam (FCAW) yog siv. Qhov qis carbon sib npaug ntawm X42 ua rau nws zoo heev weldable nrog cov txheej txheem txheem.
Q2: Puas yog X42 yeeb nkab yuav tsum tau kuaj Charpy Impact?
A:Rau PSL 1, Charpy xeem tsis yog qhov yuav tsum tau ua. Rau PSL 2 X42, Charpy V-Kev ntsuas qhov cuam tshuam yuav tsum tau ua kom ntseeg tau tias cov yeeb nkab muaj qhov sib zog txaus, tshwj xeeb tshaj yog rau cov haujlwm hauv qhov chaw txias dua.
Q3: X42 yeeb nkab puas tuaj yeem siv rau hauv "kev pabcuam qaub" (H2S- muaj ib puag ncig)?
A:Standard X42 PSL 1 yeeb nkab tsis tsim nyog rau kev pabcuam qaub. Cov kev pabcuam qaub yuav tsum muaj kev txiav txim tshwj xeeb raws li cov kev xav tau ntxiv xws li NACE MR0175 / ISO 15156, uas feem ntau ua rau muaj kev txwv nruj dua (piv txwv li, HRC 22 siab tshaj), chemistry tswj (tsawg leej faj), thiab kev kho cua sov tshwj xeeb.
Q4: Dab tsi yog cov txheej txheem tsim khoom rau cov kav dej no?
A:Lawv raug tsim los ntawm ob txoj hauv kev tseem ceeb: Seamless (SMLS) tho lub pob zeb, thiab Welded. Welded yeeb nkab suav nrog hluav taws xob Resistance Welded (ERW) rau cov kab me me thiab Submerged Arc Welded (SAW) rau cov kab loj dua (Longitudinal lossis Helical / Kauv seam).
Q5: Dab tsi yog qhov zoo ntawm kev siv X42 tshaj cov qib siab dua li X65?
A:Qhov zoo muaj xws li tus nqi qis, weldability zoo heev thiab formability yam tsis tau ua ntej- cua sov, siab ductility, thiab pov thawj kev ntseeg siab rau tsis yog -tseem ceeb, tsawg- kev ntxhov siab. Nws yog feem ntau xaiv kev lag luam uas nws lub zog txaus.
