Bambance tsakanin 420 420J1 da 420J2 bakin karfe yi halaye:
Babban bambanci tsakanin bakin karfe 420J1 da 420J2
420J1 yana da wani mataki na lalacewa juriya da lalata juriya, high taurin, da kuma farashin shi ne ƙananan bakin karfe bukukuwa. Ya dace da yanayin aiki wanda ke buƙatar talakawa bakin karfe.
420J2 bakin karfe bel alama ce ta bakin karfe da aka samar daidai da ka'idojin ASTM na Amurka; Matsayin Jafananci SUS420J2, sabon ma'auni na ƙasa 30Cr13, tsohon ma'aunin ƙasa 3Cr13, lambar dijital S42030, ƙa'idar Turai 1.4028.
420J1 bakin karfe: Bayan quenching, taurin yana da girma, kuma juriya na lalata yana da kyau (magnetic). Bayan quenching, 420J2 bakin karfe ne wuya fiye da 420J1 karfe (magnetic).
Kullum, da quenching zafin jiki na 420J1 ne 980 ~ 1050 ℃. A taurin 980 ℃ dumama man quenching ne muhimmanci ƙasa da 1050 ℃ dumama man quenching. A taurin bayan 980 ℃ man quenching ne HRC45-50, da kuma taurin bayan 1050 ℃ man quenching ne 2HRC mafi girma. Duk da haka, da microstructure samu bayan quenching a 1050 ℃ ne m da gaggautsa. Ana ba da shawarar yin amfani da 1000 ℃ dumama da quenching don samun ingantaccen tsari da taurin.
Bakin Karfe 420/420J1/420J2 Sheets & Faranti Daidai Maki:
| STANDARD | JIS | Ayyukan Aiki NR. | BS | AFNOR | SIS | UNS | AISI |
| Farashin SS420 | Farashin 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| Farashin SS420J1 | Farashin SUS420J1 | 1.4021 | 420S29 | Z20C13 | 2303 | S42010 | 420l |
| Saukewa: SS420J2 | Farashin SUS420J2 | 1.4028 | 420S37 | Z20C13 | 2304 | S42010 | 420M |
SS420/420J1/ 420J2 Sheets, Plates Chemical Composition (saky karfe):
| Daraja | C | Mn | Si | P | S | Cr | Ni | Mo |
| Farashin 420 | 0.15 max | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
| Farashin SUS420J1 | 0.16-0.25 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
| Farashin SUS420J2 | 0.26-0.40 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
SS 420 420J1 420J2 Sheets, Plates Mechanical Properties (saky karfe):
| Daraja | Ƙarfin Tensile Max | Ƙarfin Haɓaka (0.2% Kashe) Max | Tsawaitawa (a cikin inci 2) |
| 420 | MPa - 650 | MPa - 450 | 10% |
| 420J1 | MPa - 640 | MPa - 440 | 20% |
| 420J2 | MPa - 740 | MPa - 540 | 12% |
A taurin 420 jerin karfe bayan zafi magani ne wajen HRC52 ~ 55, da kuma yi na daban-daban al'amurran kamar lalacewa juriya ba sosai fice. Domin ya fi sauƙi don yankewa da gogewa, ya dace da samar da wukake. 420 bakin karfe kuma ana kiransa "yankan sa" martensitic karfe. 420 jerin karfe yana da kyau kwarai tsatsa juriya saboda da low carbon abun ciki (carbon abun ciki: 0.16 ~ 0.25), don haka shi ne manufa karfe don samar da ruwa kayan aikin.
Lokacin aikawa: Yuli-07-2020