1. A572Gr50 steel phaj yog ib qho American standard low-alloy high-strength structural steel phaj. Nws cov qauv ua tiav yog ASTM tus qauv. Lub zog tawm los ntawm cov phaj hlau no yog 572MPa, uas yog hom qis-alloy high-strength steel phaj.
2. Nyob rau hauv cov nqe lus ntawm cov tshuaj muaj pes tsawg leeg, A572Gr50 muaj ib co alloy ntsiab, xws li silicon (Si), manganese (Mn), chromium (Cr), thiab lwm yam. Lub xub ntiag ntawm cov ntsiab lus no pab txhim kho lub zog thiab corrosion kuj ntawm steel daim hlau.
3. Nyob rau hauv cov nqe lus ntawm tus me nyuam raws li txoj cai, A572Gr50 steel daim hlau yog feem ntau xa nyob rau hauv kub dov, tswj dov los yog normalizing raws li txoj cai. Txoj kev xa khoom tshwj xeeb tuaj yeem teev tau raws li kev xav tau.
4. Tsis tas li ntawd, lub thickness kev coj ua tau zoo thiab qhov tsis zoo ntawm cov hlau phaj kuj tuaj yeem kho raws li qhov xav tau sib txawv.
Nyob rau hauv cov nqe lus ntawm daim ntawv thov, A572Gr50 steel daim hlau yog dav siv nyob rau hauv lub machinery manufacturing kev lag luam, xws li nyob rau hauv lub tsim ntawm mining machinery, thee mining machinery, cua zog tsim khoom, hydropower chaw nres tsheb, khoom siv hluav taws xob nuclear, cranes, chav turbines thiab lwm yam hnyav. khoom siv thiab cov qauv. Nws cov kev ua tau zoo tau ua A572Gr50 steel phaj dav lees paub thiab qhuas los ntawm kev tsim khoom lag luam.
1. Cov tshuaj muaj pes tsawg leeg ntawm A572Gr50 steel phaj feem ntau suav nrog carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S) thiab niobium (Nb). Tshwj xeeb, cov ntsiab lus ntawm C yog Less dua lossis sib npaug rau 0.20, cov ntsiab lus ntawm Si yog Less dua lossis sib npaug rau 0.40, cov ntsiab lus ntawm Mn Less dua los yog sib npaug rau 1.50, cov ntsiab lus ntawm P yog Less tshaj los yog sib npaug rau 0.04, cov ntsiab lus ntawm S yog Less tshaj los yog sib npaug rau 0.05, thiab cov ntsiab lus ntawm Nb yog nyob nruab nrab ntawm 0.005-0.05 .
2. Cov khoom siv hluav taws xob ntawm A572Gr50 steel phaj suav nrog lub zog tawm los, lub zog tensile, tensile zog thiab cuam tshuam lub zog. Tshwj xeeb, lub zog tawm los ntawm A572Gr50 steel phaj siab dua lossis sib npaug ntawm 345MPa, lub zog tensile ntau dua lossis sib npaug rau 450MPa, lub zog tensile ntau dua lossis sib npaug rau 18, thiab lub zog cuam tshuam yog ntau dua lossis sib npaug rau 34 .
