Siyanisa pakati pemaitiro esimbi isingasvibi 420 420J1 ne420J2:
Musiyano mukuru pakati pesimbi isina ngura 420J1 ne420J2
420J1 ine mwero wakati wekudzivirira kupera uye kuramba ngura, kuomarara kwakanyanya, uye mutengo wayo wakaderera pane mabhora esimbi isina ngura. Yakakodzera nzvimbo yekushanda inoda simbi isina ngura yakajairika.
Bhandi resimbi isina ngura re420J2 rudzi rwesimbi isina ngura rinogadzirwa zvinoenderana nezvinodiwa neAmerican ASTM; standard yekuJapan SUS420J2, standard itsva yenyika 30Cr13, standard yekare yenyika 3Cr13, digital code S42030, standard yekuEurope 1.4028.
Simbi isingatsvi 420J1: Mushure mekudzima, kuomarara kwacho kwakakwira, uye kuramba ngura kwakanaka (magnetic). Mushure mekudzima, simbi isingatsvi 420J2 yakaoma kupfuura simbi ye420J1 (magnetic).
Kazhinji, tembiricha yekudzima ye420J1 i980~1050℃. Kuomarara kwekudzima mafuta ekudziya kwe980℃ kwakaderera zvakanyanya pane kudzima mafuta ekudziya kwe1050℃. Kuomarara mushure mekudzima mafuta kwe980℃ iHRC45-50, uye kuomarara mushure mekudzima mafuta kwe1050℃ kwakakwira ne2HRC. Zvisinei, chimiro chidiki chinowanikwa mushure mekudzima pa1050℃ chakakora uye hachina kusimba. Zvinokurudzirwa kushandisa 1000℃ kupisa nekudzima kuti uwane chimiro nekuomarara kuri nani.
Simbi Isina Kushanda 420 / 420J1 / 420J2 Mapepa & Maplate Akaenzana Magiredhi:
| ZVINOTAURWA | 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 Mapepa, Maplates Kuumbwa kwemakemikari (simbi yakakora):
| Giredhi | C | Mn | Si | P | S | Cr | Ni | Mo |
| SUS 420 | 0.15 yakakwira | 1.0 yakakwira | 1.0 yakakwira | 0.040 yakakwira | 0.030 yakakwira | 12.0-14.0 | - | - |
| SUS 420J1 | 0.16-0.25 | 1.0 yakakwira | 1.0 yakakwira | 0.040 yakakwira | 0.030 yakakwira | 12.0-14.0 | - | - |
| SUS 420J2 | 0.26-0.40 | 1.0 yakakwira | 1.0 yakakwira | 0.040 yakakwira | 0.030 yakakwira | 12.0-14.0 | - | - |
SS 420 420J1 420J2 Mapepa, Maplate Hunhu hwemuchina (simbi yakakora):
| Giredhi | Simba Rekusimba Kwazvo | Simba reKubereka (0.2%Kubvisa) Max | Kureba (mu 2 in.) |
| 420 | MPa – 650 | MPa – 450 | 10% |
| 420J1 | MPa – 640 | MPa – 440 | 20% |
| 420J2 | MPa – 740 | MPa – 540 | 12% |
Kuomarara kwesimbi ine 420 series mushure mekupisa kwakaenzana neHRC52~55, uye mashandiro akasiyana-siyana akadai sekudzivirira kukuvara haana kunyanya kuoneka. Nekuti iri nyore kucheka nekupolisha, yakakodzera kugadzirwa kwemapanga. 420 stainless steel inonziwo "cutting grade" martensitic steel. 420 series steel ine ngura yakanaka nekuda kwekusakwana kwekabhoni (carbon content: 0.16~0.25), saka isimbi yakakodzera kugadzira maturusi ekunyudza.
Nguva yekutumira: Chikunguru-07-2020