X65 loj- txoj kab uas hla welded yeeb nkab yog siab - lub zog kav hlau ua raws li API 5L cov qauv. Nws qhov tsawg kawg nkaus tawm lub zog yog 450 MPa (65 ksi), thiab nws yog tsim los ntawm microalloyed tswj dov thiab txias (TMCP) txheej txheem. Nws cov tshuaj lom neeg muaj pes tsawg leeg muaj cov ntsiab lus carbon tsawg (feem ntau Tsawg dua lossis sib npaug li 0.12%) thiab tsawg kawg ntawm cov teeb meem tsis zoo xws li sulfur thiab phosphorus (tsawg dua lossis sib npaug li 0.005% thiab Tsawg dua lossis sib npaug li 0.020%, feem), txhim kho qhov tsis kam ntawm API 5L X65 loj {diameters rau cov yeeb nkab steel {13} (HIC) thiab sulfide stress corrosion cracking (SSCC).
Tshuaj muaj pes tsawg leeg ntawm X65 Loj-Txoj kab uas hla Welded:
Cov pa roj carbon (C): Tsawg dua lossis sib npaug li 0.18%, kom ntseeg tau qhov kev sib tw thiab qis - kub toughness;
Silicon (Si): Tsawg dua lossis sib npaug li 0.45%, txhim kho cov nyhuv deoxidation;
Manganese (Mn): Tsawg dua lossis sib npaug li 1.70%, txhim kho lub zog thiab hardenability;
Phosphorus (P), Sulfur (S): Tsawg dua los yog sib npaug rau 0.025% thiab Tsawg dua los yog sib npaug li 0.015% raws li, txo qhov kev pheej hmoo ntawm nkig tawg;
Cov pa roj carbon sib npaug (CEllw): Tsawg dua lossis sib npaug li 0.43%, CPcm: Tsawg dua lossis sib npaug li 0.25%, ua kom zoo dua cov txheej txheem vuam qhov rai.
Cov txiaj ntsig tseem ceeb: Los ntawm kev tsim microalloying (xws li ntxiv Nb, V, Ti), qhov sib npaug ntawm lub zog siab thiab zoo toughness tau tiav, thaum tseem muaj kev tiv thaiv zoo heev rau hydrogen-induced cracking (HIC) thiab sulfide stress corrosion (SSC).
Mechanical zog ntawm X65 loj- txoj kab uas hla welded yeeb nkab:
Yield zog: 450MPa mus rau 600MPa, ua tau raws li siab -siab xa mus;
Tensile zog: 535MPa rau 760MPa, elongation Ntau dua los yog sib npaug rau 20%, xyuas kom muaj peev xwm deformation yas;
Yield-rau-tensile lub zog piv: Tsawg dua lossis sib npaug rau 0.93, ntsuas lub zog thiab kev nyab xeeb.
X65 Loj Loj Welded Yeeb Nkab Specification:
Sab nraud txoj kab uas hla: 60.3mm txog 762mm, npog me me mus rau nruab nrab txoj kab uas hla yuav tsum;
Phab ntsa Thickness: 3.5mm txog 120mm, yoog raws qhov sib txawv ntawm kev ntsuas siab (xws li ANSI Chav Kawm 300/600/900);
Ntev: Feem ntau 6m txog 12m, kev cai txiav muaj.
X65 Loj Diameter Welded Yeeb Nkab Hoobkas
