Cov khoom ua haujlwm txias ntawm Q355 yog dab tsi?
Zoo; haum rau txias dabtsi yog khoov, stamping, thiab shearing; tsis muaj cov kab nrib pleb tau pom nyob rau hauv 180℃txias dabtsi yog khoov kuaj (d=2a), ua rau nws tsim nyog rau kev tsim qauv.
Puas yog Q355 vuam xav tau preheating?
Rau daim hlau ** Tsawg dua los yog sib npaug rau 25mm **: chav tsev kub vuam, feem ntau tsis tas yuav tsum tau preheating;
>25mm: preheating rau 80-120℃yog pom zoo kom tiv thaiv kom txhob txias tawg;
Rau ambient kub < 0℃los yog siab -cov qauv txwv, qhov kub ua ntej yuav tsum tau nce ntxiv.
Dab tsi yog txoj kev siv vuam thiab cov khoom siv vuam rau Q355?
Txoj kev: submerged arc vuam, roj shielded vuam (CO₂/MAG), phau ntawv arc vuam;
Vuam cov ntaub ntawv: J507 (E5015) qis-hydrogen vuam rods, H10Mn2 vuam hlau, sib piv lub zog thiab toughness.
Does Q355 welding require heat treatment after welding? For thick plates (>50mm) los yog siab -cov pob qij txha tuav, nws raug nquahu kom tuav ntawm 200-250℃rau 1-2 teev kom tshem tawm cov kev ntxhov siab ntawm vuam thiab txo qhov kev pheej hmoo ntawm qhov txias txias.
Dab tsi yog txoj kev txiav rau Q355? Cov kev ceev faj yog dab tsi?
Nplaim txiav: Feem ntau siv; tuab daim hlau yuav tsum tau preheating rau 100-150℃kom tsis txhob tawg.
Laser/plasma txiav: haum rau nyias daim hlau, siab precision, thiab ib tug me me tshav kub- cuam tshuam cheeb tsam.
Waterjet txiav: Tsis muaj thermal deformation; haum rau irregularly zoo li qhov chaw.
Tom qab txiav, grind lub bevel kom tshem tawm cov hardened txheej.