Q: Puas muaj qhov sib txawv ntawm qhov ntsuas kub ntawm Q235B thiab S235JR?
A: Yog, muaj. Qhov cuam tshuam ntsuas kub rau Q235B yog 20 degree, thiab qhov cuam tshuam ntsuas kub rau S235JR yog 20℃(qee cov qauv tso cai 0 degree). Thov xa mus rau cov qauv sib thooj rau cov ntsiab lus tshwj xeeb.
Q: Yuav ua li cas cov yam ntxwv ntawm Q235 steel phaj piv rau cov JIS SS400 steel phaj?
A: SS400 muaj lub zog tensile ntawm 400 ~ 510MPa thiab lub zog tawm los Ntau dua lossis sib npaug ntawm 245MPa (thickness Tsawg dua lossis sib npaug rau 16mm), zoo ib yam li Q235, thiab tuaj yeem siv los hloov pauv hauv qee daim ntawv thov.
Q: Dab tsi yog qhov weldability yam ntxwv ntawm Q235 steel phaj?
A: Zoo heev weldability. Vim nws cov ntsiab lus tsis tshua muaj carbon tsawg, nws tsis tshua muaj kev tawg thaum vuam thiab tsim nyog rau ntau txoj kev vuam xws li hluav taws xob arc vuam, roj vuam, thiab submerged arc vuam.
Q: Puas yog Q235 steel phaj xav tau preheating ua ntej vuam?
A: For steel plates with a thickness ≤20mm, preheating is generally not required for welding at room temperature. For thicknesses >20mm los yog vuam nyob rau hauv qis - qhov kub thiab txias ib puag ncig, preheating rau 100 ~ 150℃yog pom zoo kom tiv thaiv kom txhob txias cracking.
Q: Q235 steel phaj puas tuaj yeem khoov?
A: Yog. Nws muaj cov yas zoo, thiab lub vojvoog dabtsi yog khoov raws li lub phaj thickness; Feem ntau, qhov ntau dua qhov tuab, qhov loj dua qhov khoov vojvoog.