Hlukanisa phakathi kwe-420 420J1 kanye ne-420J2 izici zokusebenza zensimbi engagqwali:
Umehluko omkhulu phakathi kwensimbi engagqwali 420J1 kanye 420J2
I-420J1 inezinga elithile lokumelana nokugqoka nokumelana nokugqwala, ubulukhuni obuphezulu, futhi intengo yayo ingaphansi kwamabhola ensimbi engagqwali. Ifanele indawo yokusebenza edinga insimbi engagqwali evamile.
Ibhande lensimbi engu-420J2 liwuphawu lwensimbi engagqwali ekhiqizwa ngokuhambisana nezindinganiso ze-ASTM zaseMelika; Izinga lase-Japanese SUS420J2, izinga elisha lezwe lonke elingu-30Cr13, indinganiso yezwe endala engu-3Cr13, ikhodi yedijithali S42030, indinganiso yaseYurophu engu-1.4028.
420J1 insimbi engagqwali: Ngemva kokucisha, ubulukhuni buphezulu, futhi ukumelana nokugqwala kuhle (magnetic). Ngemva kokucisha, insimbi engagqwali engu-420J2 ilukhuni kunensimbi engu-420J1 (magnetic).
Ngokuvamile, izinga lokushisa lokucima lika-420J1 liyi-980 ~ 1050℃. Ukuqina kwe-980 ℃ yokucisha uwoyela wokushisisa kuphansi kakhulu kuno-1050 ℃ wokucisha uwoyela wokushisisa. Ukuqina ngemva kokucinywa kukawoyela okungu-980 ℃ yi-HRC45-50, futhi ubulukhuni ngemva kokucinywa kukawoyela okungu-1050℃ buphakeme ngo-2HRC. Kodwa-ke, i-microstructure etholwe ngemva kokucisha ku-1050 ℃ iqinile futhi i-brittle. Kunconywa ukusebenzisa u-1000℃ ukushisisa nokucisha ukuze uthole ukwakheka okungcono nobulukhuni.
Insimbi Engagqwali 420 / 420J1 / 420J2 AmaSpredishithi namaPlate Amabanga Alinganayo:
| IZINGA | I-JIS | I-WERKSTOFF NR. | BS | AFNOR | I-SIS | I-UNS | AISI |
| I-SS 420 | I-SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| I-SS 420J1 | I-SUS 420J1 | 1.4021 | 420S29 | I-Z20C13 | 2303 | I-S42010 | 420L |
| I-SS 420J2 | I-SUS 420J2 | 1.4028 | 420S37 | I-Z20C13 | 2304 | I-S42010 | 420M |
SS420 / 420J1/ 420J2 AmaSpredishithi, I-Plate Chemical Composition (i-saky steel):
| Ibanga | C | Mn | Si | P | S | Cr | Ni | Mo |
| I-SUS 420 | 0.15 ubuningi | 1.0 ubuningi | 1.0 ubuningi | 0.040 ubuningi | 0.030 ubuningi | 12.0-14.0 | - | - |
| I-SUS 420J1 | 0.16-0.25 | 1.0 ubuningi | 1.0 ubuningi | 0.040 ubuningi | 0.030 ubuningi | 12.0-14.0 | - | - |
| I-SUS 420J2 | 0.26-0.40 | 1.0 ubuningi | 1.0 ubuningi | 0.040 ubuningi | 0.030 ubuningi | 12.0-14.0 | - | - |
SS 420 420J1 420J2 Amashidi, Amapuleti Izakhiwo zikamshini(saky steel):
| Ibanga | I-Tensile Strength Max | Amandla Esivuno (0.2%Offset) Max | Ubude (ku-2 in.) |
| 420 | MPa - 650 | MPa - 450 | 10 % |
| 420j1 | MPa - 640 | MPa - 440 | 20% |
| 420j2 | MPa - 740 | MPa - 540 | 12% |
Ukuqina kwensimbi engu-420 ngemva kokwelashwa kokushisa cishe ku-HRC52~55, futhi ukusebenza kwezici ezihlukahlukene ezifana nokumelana nomonakalo akuvelele kakhulu. Ngenxa yokuthi kulula ukusika nokupholisha, kufanelekile ukukhiqizwa kwemimese. Insimbi engagqwali engu-420 ibizwa nangokuthi "ibanga lokusika" insimbi ye-martensitic. Insimbi yochungechunge lwe-420 inokumelana nokugqwala okuhle kakhulu ngenxa yokuqukethwe kwayo kwekhabhoni ephansi (okuqukethwe kwekhabhoni: 0.16 ~ 0.25), ngakho iyinsimbi ekahle yokukhiqiza amathuluzi okuntywila.
Isikhathi sokuthumela: Jul-07-2020