Tshuaj muaj pes tsawg leeg
Q235D carbon steel phaj, high-strength steel phaj yog dav siv nyob rau hauv kev tsim kho, tsheb, shipbuilding, machinery thiab khoom siv thiab ntau lwm yam lag luam, tab sis high-zog steel phaj yuav tsum tau xaiv kom raug. Ua ntej tshaj plaws, qib siab dhau lawm, uas txhais tau hais tias tus nqi yuav siab vim yog tus nqi tsim khoom siab. Qhov thib ob, qib qis txhais tau hais tias kev ua haujlwm ruaj ntseg tsis yog raws li tus qauv. Thib peb, cov lus qhia tshwj xeeb ntawm lub zog siab steel phaj yuav tsum raug xaiv nruj raws li cov qauv kos duab. Plaub, nws raug nquahu kom yuav cov khoom siv tshwj xeeb hauv kev lag luam los kuaj cov hlau phaj siab.
| Cov ntsiab lus tshuaj tseem ceeb ntawm Q235D |
| C |
Si |
Mn |
P |
S |
| 0.17 |
0.35 |
1.40 |
0.035 |
0.035 |
Nws muaj zoo toughness. Los ntawm kev tswj hwm cov tshuaj muaj pes tsawg leeg, txo cov ntsiab lus ntawm cov teeb meem hauv Q235D carbon steel phaj, thiab xaiv cov kev kho cua sov kom tsim nyog, NM360 steel phaj muaj qhov zoo toughness. Yog li ntawd, kev ntseeg siab ntawm cov khoom siv hauv tsev tuaj yeem tsim tau raws li qhov tsis ua haujlwm ntawm qhov hnav-tiv taus. Q235D carbon steel phaj txais cov cuab yeej siv siab heev thiab cov cuab yeej siv, ua ke nrog kev tswj xyuas kev ua haujlwm siab thiab kev tshawb fawb, kom cov khoom thiab cov duab ntawm cov khoom sib xws thiab zoo nkauj.
S355J2 steel phaj Q235D carbon steel phaj dov txheej txheem yog cov txheej txheem tswj dov. Nyob rau hauv cov txheej txheem dov, ingot dov kub yog 1000-1050 ° C; Thawj theem tau txais cov txheej txheem kev txo qis qis qis, qhov kub siab yog 950-1000 ° C, dov ceev yog 1.6-2.0m / / s, tus nqi txo qis ntawm Q235D carbon steel phaj yog 15-20%, thiab tus nqi txo qis yog 40-45% kom ntseeg tau tias tag nrho cov deformation ntawm ingot. Nyob rau hauv thawj theem, qhov pib dov kub yog 910-930 ° C, thiab tiav dov kub yog ≤ 870 ° C.
