Cov yeeb nkab hlau tsis sib xyaw yog ib hom yeeb nkab hlau tsis sib xyaw, thiab nws qhov kev ua tau zoo dua li cov yeeb nkab hlau tsis sib xyaw, vim tias cov yeeb nkab hlau no muaj ntau Cr, thiab nws qhov kev ua tau zoo tiv taus kub, tiv taus kub qis thiab tiv taus xeb zoo dua li lwm cov yeeb nkab hlau tsis sib xyaw. Tsis muaj qhov sib piv, yog li cov yeeb nkab hlau tsis sib xyaw tau siv dav hauv roj av, tshuaj lom neeg, hluav taws xob, boiler thiab lwm yam lag luam. Cov yeeb nkab hlau tsis sib xyaw (Seamless Steel Tube) muaj ib ntu hollow, ib daim hlau ntev tsis muaj pob qij txha nyob ib puag ncig nws. Cov yeeb nkab hlau muaj ib ntu hollow thiab siv dav ua cov kav dej rau kev thauj cov kua, xws li cov kav dej rau kev thauj roj, roj av, roj, dej thiab qee yam khoom khov. Piv nrog cov hlau khov xws li hlau puag ncig, cov yeeb nkab hlau tsis sib xyaw muaj tib lub zog flexural thiab torsional thiab qhov hnyav sib dua. Nws yog ib qho hlau seem pheej yig thiab siv dav hauv kev tsim cov khoom siv thiab cov khoom siv kho tshuab, xws li kev thauj roj. Kev ua cov khoom siv nplhaib nrog cov yeeb nkab hlau tsis sib xyaw tuaj yeem txhim kho kev siv cov ntaub ntawv, ua kom yooj yim rau cov txheej txheem tsim khoom, txuag cov ntaub ntawv thiab lub sijhawm ua tiav, xws li cov nplhaib dov, cov khoom siv jack, thiab lwm yam, uas tau siv dav hauv kev tsim cov yeeb nkab hlau. Cov yeeb nkab hlau tsis sib xyaw kuj yog cov khoom siv tseem ceeb rau ntau yam riam phom ib txwm muaj, thiab lub thoob, lub thoob, thiab lwm yam yuav tsum ua los ntawm cov yeeb nkab hlau. Tsis tas li ntawd, thaum ntu lub nplhaib raug rau sab hauv lossis sab nraud radial siab, lub zog yog sib npaug zos. Yog li ntawd, feem ntau cov yeeb nkab hlau tsis sib xyaw yog cov yeeb nkab puag ncig.
Kev faib tawm:
Cov yeeb nkab hlau tsis muaj zog: feem ntau yog siv rau cov qauv dav dav thiab cov qauv kho tshuab. Nws cov khoom sawv cev (hom): carbon hlau 20, 45 hlau; hlau alloy Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, thiab lwm yam.
Cov kav hlau tsis muaj qhov txuas rau kev xa cov kua dej: feem ntau yog siv rau kev xa cov kav dej kua hauv kev tsim kho thiab cov khoom siv loj. Cov khoom siv sawv cev (qib) yog 20, Q345, thiab lwm yam.
Cov kav hlau tsis muaj qhov sib txuas rau cov boilers siab qis thiab nruab nrab: feem ntau yog siv rau cov kav dej rau kev xa cov kua dej qis thiab nruab nrab hauv cov boiler kev lag luam thiab cov boiler hauv tsev. Cov khoom siv sawv cev yog 10, 20 hlau.
Cov kav hlau tsis muaj seamless rau cov boilers siab siab: feem ntau yog siv rau kev thauj cov kua dej kub thiab siab siab thiab cov kav dej ntawm cov boilers hauv cov chaw tsim hluav taws xob thiab cov chaw tsim hluav taws xob nuclear. Cov ntaub ntawv sawv cev yog 20G, 12Cr1MoVG, 15CrMoG, thiab lwm yam.
Cov kav hlau tsis muaj qhov txuas rau cov khoom siv chiv siab: feem ntau yog siv rau cov kav dej kub thiab siab siab ntawm cov khoom siv chiv. Cov ntaub ntawv sawv cev yog 20, 16Mn, 12CrMo, 12Cr2Mo, thiab lwm yam.
Cov kav hlau tsis muaj roj rau kev tawg roj: feem ntau yog siv rau hauv boilers, cov cua sov sib pauv thiab lawv cov kav dej xa dej hauv cov roj smelters. Nws cov ntaub ntawv sawv cev yog 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb, thiab lwm yam.
Cov kav hlau tsis muaj qhov tsis sib xws rau cov thooj voos kheej kheej roj: feem ntau yog siv los ua ntau yam roj thiab hydraulic thooj voos kheej kheej. Nws cov ntaub ntawv sawv cev yog 37Mn, 34Mn2V, 35CrMo thiab lwm yam.
Cov kav hlau tsis muaj qhov kub dov rau cov khoom siv hydraulic: feem ntau yog siv rau kev ua cov kev txhawb nqa hydraulic, lub tog raj kheej thiab cov kem hauv cov chaw tsuas thee, nrog rau lwm cov tog raj kheej hydraulic thiab cov kem. Nws cov ntaub ntawv sawv cev yog 20, 45, 27SiMn, thiab lwm yam.
Cov yeeb nkab hlau seamless uas raug rub los yog dov txias: feem ntau yog siv rau cov qauv kho tshuab, cov khoom siv nias carbon, xav tau qhov tseeb siab thiab qhov chaw tiav zoo. Nws cov khoom siv sawv cev yog 20, 45 hlau, thiab lwm yam.
Cov khoom siv raj hlau
12Cr1MoV, P22 (10CrMo910) T91, P91, P9, T9, WB36, Cr5Mo (P5, STFA25, T5, )15CrMo (P11, P12, STFA22), 13CrMo44, Cr5Mo, 15MoCrMo, 25CrMo.
Cov qauv kev siv hauv tebchaws DIN17175-79,GB5310-2008, GB9948-2006, ASTMA335/A335m, ASTMA213/A213m.