ASTM A514/A514M S690QL yog lub siab - lub zog quenched thiab tempered alloy structural steel phaj nrog qhov tsawg kawg nkaus lub zog ntawm 690 MPa. Nws muaj cov khoom siv kho tshuab zoo heev, suav nrog lub zog tensile ntau ntawm 770-930 MPa, zoo toughness, thiab qaug zog tiv thaiv, ua rau nws haum rau hnyav-load daim ntaub ntawv.
Cov qib no tau txais kev kho kom zoo quenching thiab tempering (QL) kev kho cua sov kom ntseeg tau tias cov microstructure tsis sib xws thiab lub zog zoo tshaj plaws -rau - sib npaug toughness. Nws yog feem ntau siv rau hauv kev tsim kho tshuab, cov cuab yeej siv mining, cranes, thiab cov qauv sab nrauv uas txo qhov hnyav thiab ua haujlwm ntev yog qhov tseem ceeb.
S690QL tswj kev txhim khu kev qha nyob rau hauv qis- qhov kub thiab txias ib puag ncig (mus rau -40 degree) thiab ua kom pom kev zoo weldability nrog preheating kom zoo. Nws tswj cov tshuaj muaj pes tsawg leeg (alloyed nrog Cr, Mo, thiab B) txhim kho hardenability thiab lub zog. Muaj nyob rau hauv ntau yam thicknesses, nws ua tau raws li ASTM cov qauv nruj rau kev ua tau zoo steel daim ntaub ntawv.
Cim npe nrov: Tuam Tshoj astm a514 / a514m s690ql alloy steel ntawv, Tuam Tshoj astm a514 / a514m s690ql alloy steel ntawv manufacturers, lwm tus, Hoobkas
