Q: Lub luag haujlwm ntawm manganese (Mn) hauv Q235 steel phaj yog dab tsi?
A: Manganese txhim kho lub zog thiab hardness ntawm steel phaj thiab txhim khu nws kub - dov kev ua tau zoo. Qhov siab tshaj plaws manganese cov ntsiab lus hauv Q235 steel phaj yog 1.4%.
Q: Dab tsi yog qhov txwv ntawm silicon (Si) cov ntsiab lus hauv Q235 steel phaj?
A: Silicon (Si) cov ntsiab lus yuav tsum tsawg dua lossis sib npaug li 0.35%. Cov nyiaj tsim nyog ntawm silicon tuaj yeem txhim kho lub zog, tab sis cov nyiaj ntau dhau yuav cuam tshuam rau plasticity thiab toughness ntawm cov hlau.
Q: Dab tsi yog qhov teeb meem ntawm leej faj (S) ntawm kev ua haujlwm ntawm Q235 steel phaj?
A: Sulfur ua rau kub brittleness hauv cov hlau, ua rau nws yooj yim rau tawg thaum lub sij hawm ua haujlwm kub -. Yog li ntawd, qib siab - qib zoo ntawm Q235 muaj kev txwv nruj dua rau cov ntsiab lus ntawm cov sulfur.
Q: Dab tsi yog qhov cuam tshuam ntawm phosphorus (P) ntawm kev ua haujlwm ntawm Q235 steel phaj?
A: Phosphorus ua rau txias brittleness hauv cov hlau thiab txo qis - qhov kub thiab txias cuam tshuam toughness. Cov kev txwv ntawm phosphorus cov ntsiab lus hauv Q235C / D yog nruj dua li cov hauv A / B.
Q: Puas yog qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm Q235 steel phaj tso cai?
A: Yog, qhov sib txawv yog tso cai, yog tias nws ua raws li cov cai ntawm GB / T 222-2006 "Permissible Deviations in Chemical Composition of Finished Steel Products".