Q390C yog lub zog siab uas tsis tshua muaj hlau hlau, uas yog suav nrog tus qauv GB, feem ntau yog tsim los ntawm carbon, silicon, manganese, phosphorus thiab sulfur. Nws lub zog yog siab dua li cov qauv carbon zoo tib yam, tab sis nws cov khoom xws li plasticity thiab weldability tseem zoo.
Yam ntxwv
Cov yam ntxwv ntawm Q390C suav nrog:
1. Lub zog siab: Q390C muaj lub zog tawm los ntawm Ntau dua lossis sib npaug ntawm 390MPa thiab lub zog tensile ntawm Greater los yog sib npaug rau 490 ~ 620MPa, uas yog ntau dua li cov pa roj carbon zoo tib yam.
2. Zoo toughness: Q390C muaj zoo plasticity thiab toughness thiab yog haum rau structural qhov chaw nrog siab loads.
3. Zoo weldability: Q390C steel muaj zoo weldability thiab yog haum rau ntau yam vuam txoj kev.
4. Zoo tsis kub kub toughness: Q390C steel tseem muaj zoo toughness ntawm tsawg kub, haum rau siv nyob rau hauv tsis tshua muaj kub ib puag ncig.
Tsis muaj
Cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv tsis zoo ntawm Q390C yog raws li hauv qab no:
Cov tshuaj muaj pes tsawg leeg: C Tsawg dua lossis sib npaug rau {{0}}.20, Si Less dua lossis sib npaug rau 0.50, Mn: 1.{ {5}}.60, P Tsawg dua lossis sib npaug rau 0.030, S Tsawg dua lossis sib npaug rau 0.030, Nb Tsawg dua lossis sib npaug 0.07, V Tsawg dua lossis sib npaug 0.20, Ti Tsawg dua lossis sib npaug li 0.05
Mechanical zog: yield zog Ntau tshaj los yog sib npaug rau 390MPa, tensile zog 490 ~ 620MPa, elongation Ntau tshaj los yog sib npaug rau 18 feem pua, necking Ntau tshaj los yog sib npaug rau 45 feem pua, cuam tshuam fais fab AKV (-20 degree) Ntau dua los yog ua 34j
Kev siv ntau yam
Q390C steel yog tsim rau ntau yam ntawm cov qauv loj, cov khoom siv thiab cov khoom siv, xws li kev tsim cov choj, nkoj, tsheb, cranes thiab lwm yam khoom hnyav.
Tej teeb meem
Q390C steel yuav tsum tau saib xyuas hauv qab no hauv kev siv:
1. Preheating yuav tsum tau nqa tawm ua ntej welding kom tsis txhob vuam distortion thiab tawg.
2. Lub siab tawv ntawm Q390C steel ua rau nws nyuaj rau kev ua thiab yuav tsum tau siv cov cuab yeej tsim nyog thiab cov txheej txheem.
3. Kev saib xyuas yuav tsum tau them rau kev tswj qhov kub thiab txias thaum lub sij hawm kho galvanizing kom tsis txhob muaj hydrogen embrittlement.
Cim npe nrov: q390c, Tuam Tshoj q390c lwm tus neeg
