Qhov kwv yees hardness ntawm Q355 steel yog dab tsi?
Nyob rau hauv lub kub- dov lub xeev, nws yog kwv yees li HB 140-180, thiab tom qab quenching thiab tempering, nws muaj peev xwm ncav cuag HB 200-250, ua rau nws haum rau machining.
Dab tsi yog qhov qaug zog ntawm Q355?
Superior rau Q235, nws muaj zog tsis kam rau alternating loads thiab haum rau dynamic load lug xws li cranes thiab txuas hniav.
Lub teb chaws cov qauv twg Q355 steel phaj ua raws li?
Tus qauv tseem ceeb: GB/T 1591-2018 "Low Alloy High Strength Structural Steel"; Los ntawm -cov khoom tuab: GB/T 5313-2010; Qhov ntev thiab cov duab: GB / T 709.
Dab tsi yog cov khoom xa tuaj rau Q355 steel phaj?
AR (Kub Rolled): Feem ntau siv, tus nqi qis;
N (Normalized): Cua-cooled ntawm 900-920 degree, refines grain loj thiab txhim kho qis- kub toughness;
M (Controlled Rolling): Tswj dov, ua tiav qhov sib npaug ntawm lub zog thiab tawv;
QT (Quenched thiab Tempered): Quenching + tempering, siv rau cov ntawv thov kom muaj zog thiab siab tawv.
Dab tsi yog qhov sib txawv thickness ntau rau Q355 steel daim hlau?
Txheem: 3-200mm; Ntxiv - cov phaj tuab txog li 400mm (kev txiav txim siab yuav tsum tau ua).