Dab tsi yog qhov ua tau zoo ntawm Q235B thiab Q345B welded kav?
Q235B yog cov hlau roj carbon roj carbon (C Tsawg dua li (C Q345b yog cov hlau tsis muaj zog (muaj mn, v) nrog rau kev tawg kom tawg dua Q235b. ob leeg yuav tsum ua raws li GB / T 700-2006 tus qauv.
Cov teeb meem ntau npaum li cas ntawm stainless hlau ntau zaus vived kav (xws li 304)?
304 stainless hlau muaj kev txom nyem thermal conductivity (tsuas yog 1/3 ntawm cov ntaub pua chaw tsim nyog yuav tsum tau ua kom qeeb dua rau corrosion), thiab cov kev siv hluav taws xob ceev ceev) {}} Weld xav kom dhau 10% oxalic acid etching sim kom xeem intergranular corrosion .
Dab tsi yog qhov sib txawv ntawm cov qauv tsim ntawm API 5L X60 thiab X80 Welded Kav?
X60 (Tawm lub zog ntau dua lossis sib npaug rau 415MPA) ntxiv 0 {{{{{% NB rau refine nplej nplej; X80 (ntau dua los yog sib npaug rau 555mpa) ntxiv ntxiv 0 {{{{}} mo thiab 0.03% mo thiab 0.03 mount thiab siv TMCP cov txheej txheem los tswj txias. Cov pa roj carbon sib npaug (ceiiw) ntawm x80 yuav tsum tau tsawg dua lossis sib npaug rau 0.43%, thiab cov vuam preheating kub nce ntxiv 200 degree.
Vim li cas thiaj yog cov ntsiab lus silicon ntawm galvanized welded yeeb nkab tsawg?
Si> 0 {{. 05% hauv cov txheej txheem galvanized los ua kom muaj qhov sib dhos (5μm) thiab ntxiv rau Corrosion Resistance los ntawm 3 zaug.
Cov khoom siv twg yog siv rau welded kav hauv tsawg ib puag ncig qhov chaw?
-46}℃cryogenic kav yuav tsum tau l245nb (tsawg dua los yog sib npaug) shear cheeb tsam ntawm ntau dua lossis sib npaug 85%.
