42CRMO Seamless Steel Yeeb Nkab
Lub hom phiaj ntawm 42crmo seamless steel yeeb nkab: Cov qib tshwj xeeb steel rau txuas hniav yog "42crmo", qib tshwj xeeb steel rau tsheb girders yog "42CRmo", thiab qib tshwj xeeb steel rau cov hlab ntsha siab yog "42Crmo". Hom hlau no vam khom cov ntsiab lus carbon (C) los txhim kho cov khoom siv ntawm cov hlau. Yog li, raws li qib ntawm cov ntsiab lus carbon, cov hlau no tuaj yeem muab faib ua: Cov pa roj carbon tsawg-cov ntsiab lus carbon feem ntau tsawg dua 0.25%, xws li 10, 20 steel, thiab lwm yam; nruab nrab carbon steel-carbon cov ntsiab lus feem ntau ntawm 0.25 thiab 0.60%, xws li 35, 45 steel, thiab lwm yam .; siab carbon steel-carbon cov ntsiab lus feem ntau ntau dua 0.60%. Hom hlau no feem ntau tsis siv hauv kev tsim cov kav hlau.
Tsis pom tseeb temper brittleness, me me deformation thaum lub sij hawm quenching, siab qaug zog txwv thiab ntau yam cuam tshuam tsis kam tom qab quenching thiab tempering kev kho mob, zoo low-temperature cuam tshuam toughness, siab creep zog thiab kav ntev ntawm kub. Cov hlau feem ntau siv qhov chaw quenching tom qab quenching thiab tempering raws li kev npaj kho cua sov.
42crmo yog cov khoom siv hlau. Yav dhau los, ib lub npe rau hlau. Lub npe yog: Q345B, cov ntaub ntawv zoo sib xws yog Q345a, Q345c, Q345e, cov cim qib zoo ABCDE txhais tau hais tias qhov ntsuas qhov ntsuas kub tsis tas yuav tsum yog +20 degrees 0 degrees -20 degrees 40 degrees ABCD sawv cev rau qib Q235 cov ntsiab lus zoo. Muaj plaub theem ntawm A, B, C, D, los ntawm A txog D uas qhov zoo yog los ntawm qis mus rau siab.
Cov kev xav tau rau qib zoo sib txawv yog raws li hauv qab no:
A - Muab cov tshuaj muaj pes tsawg leeg ntawm S, P, C, Mn, Si thiab fu, fy, δ5 (δ10), raws li tus neeg yuav khoom xav tau, 1800 txias khoov tuaj yeem muab, tab sis tsis muaj kev cuam tshuam lub zog, cov pa roj carbon. cov ntsiab lus thiab manganese cov ntsiab lus tsis suav tias yog kev xa khoom.
B—Muab S, P, C, Mn, Si chemical muaj pes tsawg leeg thiab fu, fy, δ5 (δ10), txias khoov 180' xeem. Nws kuj muab lub zog cuam tshuam ntawm +200C, Ak≥27J
C-Ntxiv rau tib qhov yuav tsum tau ua raws li Chav B, nws tseem muab kev cuam tshuam lub zog Ak≥27J ntawm 00C.
D ---- Ntxiv rau qhov yuav tsum tau ua ntawm qib B, nws tseem muab kev cuam tshuam lub zog Ak≥27J ntawm -200C. E ---- Ntxiv rau qhov yuav tsum tau ua ntawm qib B, nws tseem muab kev cuam tshuam lub zog Ak≥27J ntawm -400C.
Qhov twg 42crmo seamless steel kav thiab cov kav hlau zoo tib yam siv tau raws li: Cov kav hlau tau muab faib ua cov khaub thuas rub thiab kub dov.
1, av seam steel yeeb nkab rau cov kua dej: GB8163-2018
2, Seamless steel yeeb nkab rau boiler: GB3087-2018
3. Kev kub siab seamless yeeb nkab rau boiler: GB5310-2018 (ST45.8-Ⅲ hom)
4. High-pressure seamless steel kav rau cov khoom siv chiv: GB6479-2018
5. Seamless steel yeeb nkab rau geological drilling: YB235-70
6, Seamless steel yeeb nkab rau roj drilling: YB528-65
7, Seamless steel yeeb nkab rau roj av tawg: GB9948-2018
8. Tshwj xeeb seamless yeeb nkab rau roj laum dab tshos: YB691-70
9, Seamless steel yeeb nkab rau tsheb ib nrab ncej: GB3088-2018
10. Seamless steel yeeb nkab rau nkoj: GB5312-2018
11. Cold-draw txias-dov precision seamless steel yeeb nkab: GB3639-2018
Ntau cov kav hlau 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMovG, 20G, 40Cr, 12Cr1MoV, 15CrMoG steel kav muab faib ua seamless steel kav thiab welded steel kav raws li cov txheej txheem ntau lawm.
Seamless steel kav yog seamless steel kav ua los ntawm steel ingots, billets los yog steel rods perforated.
