Bambance tsakanin halayen aikin bakin karfe 420 420J1 da 420J2:
Babban bambanci tsakanin bakin karfe 420J1 da 420J2
420J1 yana da wani matakin juriya ga lalacewa da kuma juriya ga tsatsa, yana da tauri sosai, kuma farashinsa ya fi ƙasa da ƙwallon bakin ƙarfe. Ya dace da yanayin aiki wanda ke buƙatar ƙarfe na yau da kullun.
Belin bakin ƙarfe 420J2 alama ce ta bakin ƙarfe da aka samar bisa ga ƙa'idodin ASTM na Amurka; ma'aunin Japan SUS420J2, sabon ma'aunin ƙasa 30Cr13, tsohon ma'aunin ƙasa 3Cr13, lambar dijital S42030, ma'aunin Turai 1.4028.
Bakin ƙarfe 420J1: Bayan kashewa, taurin yana da yawa, kuma juriyar tsatsa tana da kyau (magnetic). Bayan kashewa, bakin ƙarfe 420J2 ya fi ƙarfe 420J1 (magnetic) tauri.
Gabaɗaya, zafin kashewa na 420J1 shine 980~1050℃. Taurin kashewa na mai dumama 980℃ ya yi ƙasa sosai da 1050℃ ɗumamar mai. Taurin bayan kashewa na mai 980℃ shine HRC45-50, kuma taurin bayan kashewa na mai 1050℃ shine 2HRC mafi girma. Duk da haka, ƙaramin tsarin da aka samu bayan kashewa a 1050℃ yana da kauri kuma yana da rauni. Ana ba da shawarar a yi amfani da dumama da kashewa na 1000℃ don samun ingantaccen tsari da tauri.
Bakin Karfe 420 / 420J1 / 420J2 Takardu da Faranti Daidai gwargwado:
| MAS'ALA | JIS | WERKSTOFF NR. | BS | AFNOR | SIS | UNS | AISI |
| SS 420 | SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| SS 420J1 | SUS 420J1 | 1.4021 | 420S29 | Z20C13 | 2303 | S42010 | 420L |
| SS 420J2 | SUS 420J2 | 1.4028 | 420S37 | Z20C13 | 2304 | S42010 | 420M |
SS420 / 420J1/ 420J2 Takardu, Faranti Sinadaran Haɗakarwa (ƙarfe mai laushi):
| Matsayi | C | Mn | Si | P | S | Cr | Ni | Mo |
| SUS 420 | 0.15 mafi girma | matsakaicin 1.0 | matsakaicin 1.0 | matsakaicin 0.040 | matsakaicin 0.030 | 12.0-14.0 | - | - |
| SUS 420J1 | 0.16-0.25 | matsakaicin 1.0 | matsakaicin 1.0 | matsakaicin 0.040 | matsakaicin 0.030 | 12.0-14.0 | - | - |
| SUS 420J2 | 0.26-0.40 | matsakaicin 1.0 | matsakaicin 1.0 | matsakaicin 0.040 | matsakaicin 0.030 | 12.0-14.0 | - | - |
SS 420 420J1 420J2 Takardu, Faranti Kayayyakin injiniya (ƙarfe mai laushi):
| Matsayi | Mafi girman ƙarfin tensile | Ƙarfin Yawa (Kashi 0.2%) Mafi girma | Tsawaita (a cikin inci 2) |
| 420 | MPa - 650 | MPa - 450 | Kashi 10% |
| 420J1 | MPa – 640 | MPa – 440 | kashi 20% |
| 420J2 | MPa – 740 | MPa – 540 | 12% |
Taurin ƙarfe mai jerin 420 bayan an yi amfani da shi wajen magance zafi yana kusa da HRC52~55, kuma aikin wasu fannoni kamar juriya ga lalacewa ba shi da kyau sosai. Domin yana da sauƙin yankewa da gogewa, ya dace da samar da wuƙaƙe. Ana kuma kiran ƙarfe mai launin bakin ƙarfe 420 da "ƙarfe mai daraja" da "ƙarfe mai daraja". ƙarfe mai jerin 420 yana da juriya mai kyau saboda ƙarancin sinadarin carbon (ƙarfin carbon: 0.16~0.25), don haka ƙarfe ne mai kyau don samar da kayan aikin nutsewa.
Lokacin Saƙo: Yuli-07-2020