Cov khoom siv vuam siv feem ntau?
Kev taw qhia vuam: E5015 (J507), E5016 (J506)
Submerged Arc Vuam: H08MnA + HJ431
Gas shielded vuam: ER50-6
Vuam Preheating Kub?
Phaj thickness Tsawg dua los yog sib npaug rau 25mm: Tsis muaj preheating
25-50mm: 80-120 degree
50mm los yog Q345E: 120-150 degree
Puas yog Post-Yuav tsum muaj kev kho cua sov?
General Structures: Tsis yog
Thick Plates (>50mm), Pressure Vessels, or High-Stress Components: Stress-Relief Annealing (600–650℃)
Kev ua haujlwm txias yuav ua rau tawg?
Nrog cov txheej txheem tsim nyog, nws yuav tsis. Q345 muaj kev ua haujlwm txias txias zoo (tsis muaj kab nrib pleb ntawm 180 degree), tab sis rau cov phaj tuab / qis qis, cov hauv qab no yuav tsum tau:
Preheating (50-100 degree)
Khoov mandrel txoj kab uas hla Ntau dua los yog sib npaug rau 2 zaug phaj thickness.
Dab tsi yuav tsum tau ceev faj tom qab txiav cov nplaim taws?
Ib txheej 2-3 hli hardened (martensite) yuav tsim ntawm ntug txiav, uas yog feem ntau tawg. Kev pom zoo: