Q: Dab tsi yog cov khoom tseem ceeb ntawm Q235 steel phaj?
A: Cov khoom tseem ceeb yog hlau (Fe), ua raws li carbon (C), silicon (Si), thiab manganese (Mn), nrog me me ntawm impurities xws li sulfur (S) thiab phosphorus (P).
Q: Dab tsi yog carbon cov ntsiab lus ntau rau Q235 steel phaj?
A: Cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.22% (Q235A, B), Q235C Tsawg dua lossis sib npaug li 0.20%, Q235D Tsawg dua lossis sib npaug li 0.18%.
Q: Dab tsi yog qhov cuam tshuam ntawm sulfur thiab phosphorus ntawm cov khoom ntawm Q235 steel phaj?
A: Sulfur ua rau kub brittleness nyob rau hauv steel phaj, ua rau nws yooj yim rau tawg thaum lub sij hawm siab - kub ua; phosphorus ua rau txias brittleness, txo qhov toughness ntawm qis kub. Yog li ntawd, cov qauv hauv tebchaws tau txwv nruj rau cov ntsiab lus ntawm sulfur thiab phosphorus.
Q: Puas yog cov ntsiab lus ntawm sulfur thiab phosphorus rau Q235D steel phaj nruj dua li Q235B?
A: Yog. Q235D muaj sulfur (S) Tsawg dua lossis sib npaug li 0.030% thiab phosphorus (P) Tsawg dua lossis sib npaug li 0.030%, thaum Q235B muaj S Less dua lossis sib npaug li 0.045% thiab P Tsawg dua lossis sib npaug li 0.045%. Qib D steel muaj ntau dua purity.
Lus Nug: Lub luag haujlwm ntawm manganese hauv Q235 steel phaj yog dab tsi?
Teb: Manganese tuaj yeem txhim kho lub zog thiab hardness ntawm steel phaj, txhim kho nws cov machinability, thiab kuj tiv thaiv qee qhov teeb meem ntawm leej faj.