Qhov sib txawv ntawm CCS FQ51 thiab CCS FQ70 steel phaj

CCS FQ51 yog ib qho ultra-siab- lub zog marine steel phaj ntawv pov thawj los ntawm Tuam Tshoj Classification Society (CCS) rau kev thov rau kev thov sab nrauv thiab nkoj tsim. Lub npe "FQ" txhais tau hais tias nws yog quenched thiab tempered steel nrog kev cuam tshuam toughness kuaj ntawm qhov kub tsis tshua muaj siab ntawm -60℃. Nws muaj qhov tsawg kawg nkaus yield zog ntawm 500 MPa thiab lub zog tensile ntau ntawm 610-770 MPa, nrog tsawg kawg elongation ntawm kwv yees li 16%. Nws cov tshuaj muaj pes tsawg leeg yog tswj hwm los xyuas kom meej weldability zoo thiab qis -kub toughness. Qib no yog qhov zoo tagnrho rau cov txheej txheem tseem ceeb hauv kev txhim kho tus kheej ntawm qhov drilling platforms, icebreakers, thiab Arctic-class cov hlab ntsha.

CCS FQ70 yog ib qho ultra- siab- lub zog marine steel phaj kuj tau ntawv pov thawj los ntawm CCS, tsim los ntawm quenching thiab tempering . Lub "70" qhia txog qhov tsawg kawg nkaus tawm lub zog ntawm 690 MPa thiab lub zog tensile ntau ntawm 770-940 MPa . Zoo li FQ51, nws raug kuaj xyuas ntawm -60 degree, nrog rau qhov tsawg kawg nkaus kev xav tau ntawm lub zog ntawm 46J (transverse) thiab 62J (ntev). Nws cov tshuaj muaj pes tsawg leeg suav nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.18%, manganese Tsawg dua lossis sib npaug li 1.60%, thiab cov ntsiab lus alloying xws li Ni, Cr, Mo, thiab B kom ua tiav lub zog zoo thiab toughness. Qib no yog tsim los rau cov ntawv thov uas xav tau tshaj plaws, suav nrog ultra- cov nkoj loj loj, jack- nce toj ob txhais ceg, thiab cov qauv tseem ceeb hauv hiav txwv uas xav tau qhov siab tshaj plaws-rau-hnyav piv.

Ob leeg CCS FQ51 thiab CCS FQ70 yog CCS- ntawv pov thawj quenched thiab tempered marine steels nrog tshwj xeeb qis- kub toughness kuaj ntawm -60 degree, kom ntseeg tau tias kev ua tau zoo nyob rau hauv lub feem ntau huab Arctic thiab hnyav marine ib puag ncig. Lawv qhov sib txawv tseem ceeb nyob hauv qib siab: FQ51 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 500 MPa nrog lub zog tensile ntawm 610-770 MPa, haum rau siab - lub zog tawm ntawm ntug dej hiav txwv thiab cov nkoj dej khov hauv chav kawm, thaum FQ70 muab qhov muaj zog ntau dua qhov tsim tawm lub zog tsawg kawg ntawm 6070 MPa, ncav cuag 6070 MPa. rau qhov xav tau tshaj plaws load-bearing daim ntawv thov yuav tsum tau txo qhov hnyav tshaj plaws. Ob qib tshwj xeeb tswj cov tshuaj muaj pes tsawg leeg thiab tswj cov weldability zoo rau cov kev pabcuam marine tseem ceeb.

Tshuaj muaj pes tsawg leeg

Mechanical Property