Qhov txawv ntawm Q235 thiab Q355
Q235 thiab Q355 yog ob hom kev siv hlau. Lawv qhov sib txawv tseem ceeb nyob rau hauv qhov Q235 yog qis- carbon steel nrog lub zog tawm los ntawm tsis pub tsawg dua 235MPa, haum rau lub teeb - cov qauv ua haujlwm; thaum Q355 yog siab -lub zog qis- alloy steel nrog lub zog tawm los ntawm tsis pub tsawg dua 345MPa, muaj feem xyuam rau hnyav-load lossis siab{12}}xav tau qhov xwm txheej. Ob qho no nthuav tawm qhov sib txawv tseem ceeb hauv cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab thiab daim ntawv thov.
Qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg
Q235
Nws raug cais raws li cov pa roj carbon zoo tib yam steel. Nws muaj cov ntsiab lus ntawm cov pa roj carbon tsawg (kwv yees li 0.14% -0.22%), nrog cov hlau thiab cov pa roj carbon monoxide ua cov khoom tseem ceeb, ntxiv rau me me ntawm silicon thiab manganese. Nws muaj tsawg theem ntawm phosphorus thiab sulfur thiab tsis muaj alloying ntsiab.
Q355
Nws belongs rau siab -lub zog qis- hlau alloy. Nws cov ntsiab lus carbon yog qis dua me ntsis (ib puag ncig 0.12%-0.20%), tab sis cov ntsiab lus ntawm manganese tau nce ntau. Tsis tas li ntawd, micro-alloying ntsiab xws li niobium, vanadium thiab titanium yog ntxiv los txhim kho nws cov kev ua tau zoo los ntawm cov nplej refinement ntxiv dag zog rau.
Kev sib piv ntawm Mechanical Properties
Lub zog
Q235 muaj lub zog tawm los ntawm Ntau dua lossis sib npaug ntawm 235MPa thiab lub zog tensile xws li 370MPa txog 500MPa, nrog cov yas zoo heev thiab tawv (elongation Ntau dua lossis sib npaug li 26%).
Q355 muaj lub zog tawm los ntawm Ntau dua lossis sib npaug rau 345MPa (Ntau dua lossis sib npaug ntawm 355MPa raws li qee cov qauv) thiab lub zog tensile ntawm 450MPa rau 650MPa. Nws nta siab dua hardness tab sis me ntsis qis plasticity thiab toughness (elongation Ntau dua los yog sib npaug li 21%).
Cov yam ntxwv ua
Q235 boasts superior weldability thiab formability, ua rau nws haum rau complex ua. Q355 muaj zog ua hauj lwm - hardening kev ua tau zoo, tab sis nws nyhav rau tawg thaum lub sij hawm txias deformation thiab yog li yuav tsum tau quenching los txhim kho nws lub zog.
Kev tshwm sim thiab qhov txawv ntawm txoj kev
Xim thiab sparks
Tshiab txiav Q235 qhia tau hais tias xiav - xim grey, thaum Q355 zoo nkaus li liab me ntsis vim muaj cov ntsiab lus siab manganese. Thaum av nrog lub log abrasive, Q235 tsim ib puag ncig, tsaus liab sparks, whereas Q355 generates ci ci nrog ceg.
