1. Cov ntsiab lus carbon cuam tshuam li cas rau kev ua haujlwm ntawm A106 Qib B seamless yeeb nkab?
Cov ntsiab lus ntawm cov pa roj carbon monoxide yog qhov tseem ceeb cuam tshuam rau kev ua haujlwm ntawm A106 Qib B: ① Thaum cov ntsiab lus carbon nyob rau hauv tus qauv (tsawg dua lossis sib npaug li 0.30%), cov ntsiab lus carbon ntau dua yuav ua rau lub zog tensile thiab hardness ntawm cov yeeb nkab, tab sis txo nws cov ductility thiab weldability. ② Yog tias cov ntsiab lus carbon ntau tshaj 0.30%, cov yeeb nkab yuav nkig, yooj yim rau tawg thaum ua haujlwm (xws li khoov thiab vuam), thiab tsis tuaj yeem ua tau raws li qhov siab ntawm - qhov yuav tsum tau ua haujlwm kub. ③ Tus qauv txwv cov ntsiab lus ntawm cov pa roj carbon monoxide kom muaj qhov sib npaug ntawm lub zog thiab lub zog, ua rau cov yeeb nkab haum rau siab - kub thiab nruab nrab - cov kua xa tawm.
2. Txoj kev kho cua sov ntawm A106 Qib B seamless yeeb nkab yog dab tsi?
A106 Qib B seamless yeeb nkab feem ntau txais kev kho cua sov kom zoo. Cov txheej txheem yog: cua sov cov yeeb nkab rau 890-920 degree, tuav nws rau qee lub sijhawm (nyob ntawm phab ntsa tuab, feem ntau 1-2 teev ntawm 25 hli phab ntsa thickness) kom ntseeg tau tias qhov kub thiab txias, tom qab ntawd txias hauv huab cua. Normalizing tuaj yeem kho cov qauv nplej ntawm cov yeeb nkab, tshem tawm cov kev ntxhov siab sab hauv uas tau tsim thaum lub sij hawm dov, txhim kho toughness thiab ductility, thiab xyuas kom meej tias cov cuab yeej siv tau raws li tus qauv.
3. Cov tshuaj muaj pes tsawg leeg ntawm 4130 alloy steel seamless yeeb nkab yog dab tsi, thiab vim li cas nws thiaj siv dav hauv kev lag luam tshuab?
Cov tshuaj lom neeg muaj pes tsawg leeg ntawm 4130 alloy steel seamless yeeb nkab yog: Carbon (C) 0.28-0.33%, Manganese (Mn) 0.40-0.60%, Phosphorus (P) Tsawg dua lossis sib npaug li 0.035%, Sulfur (S) Tsawg dua lossis sib npaug li 0.500 chromium (0.040%). (Cr) 0.80-1.10%, Molybdenum (Mo) 0.15-0.25%. Nws yog dav siv nyob rau hauv kev lag luam machinery vim hais tias ntawm nws cov zoo heev zoo txhua yam khoom: tom qab tshav kub kev kho mob (quenching thiab tempering), nws muaj lub zog siab (tsawg kawg yield zog 862} MPa, yam tsawg kawg nkaus tensile zog 930 MPa), zoo toughness, thiab hnav tsis kam. Nws feem ntau yog siv los tsim cov khoom siv hluav taws xob siab, xws li hydraulic thooj voos kheej kheej, piston rods, thiab kis tau tus mob.
4. Dab tsi yog qhov txawv ntawm 4130 thiab 4340 alloy steel seamless kav?
Qhov sib txawv tseem ceeb yog nyob rau hauv tshuaj muaj pes tsawg leeg thiab txhua yam khoom: ① Tshuaj muaj pes tsawg leeg: 4340 muaj nickel ntau dua (1.65-2.00%) thiab chromium (0.70-0.90%), thiab me ntsis siab molybdenum (0.20{16}}0.30%); 4130 tsis muaj cov ntsiab lus nickel. ② Mechanical zog: 4340 muaj zog ntau dua (tsawg kawg yield zog 1034 MPa, yam tsawg kawg nkaus tensile zog 1172 MPa) tshaj 4130, tab sis qis ductility. ③ Daim ntawv thov: 4130 yog siv rau nruab nrab- load mechanical parts, hos 4340 yog siv rau high-load, high-strength Cheebtsam, xws li aircraft tsaws iav, siab-siab li qub, thiab hnyav machinery ncej.
5. Qhov kev pabcuam kub ntawm 12Cr1MoV alloy steel seamless yeeb nkab yog dab tsi, thiab nws cov kev siv tseem ceeb yog dab tsi?
12Cr1MoV yog cov cua sov-resistant alloy steel seamless yeeb nkab qib, nrog rau kev pabcuam kub ntawm -20℃txog 570℃. Nws cov ntawv thov tseem ceeb yog nyob rau hauv cov chaw tsim hluav taws xob, boilers, thiab cov khoom siv petrochemical, siv rau kev thauj khoom siab - kub thiab siab - siab chav dej, dej kub, thiab corrosive media. Nws muaj qhov zoo siab -kub creep tsis kam thiab oxidation tsis kam, uas tuaj yeem tswj kev ua haujlwm ruaj khov nyob rau hauv ntev - lub sij hawm siab - qhov kub thiab txias, ua rau nws yog ib qho tseem ceeb rau boiler dej phab ntsa, superheaters, thiab reheaters.
