Khetholla pakeng tsa 42021 le li-steain tsa stene tsa tšepe:
Phapang e ka sehloohong lipakeng tsa tšepe e se nang tšepe ea tšepe ea 420j1 le 420j2
420J1 e na le mokhoa o itseng oa ho hanyetsa le ho hanyetsa ha ho hanyetsa, ho thata le ho feta, ho thata le theko ea eona ke tlase ho libolo tse se nang kelello. E loketse tikoloho e sebetsang e hlokang tšepe e tloaelehileng.
Belt ea tšepe ea tšepe ke mofuta oa tšepe e se nang mabele e hlahisoang ho latela melao ea astm; Saka sa Japane Solotina Soloce Strahlan2
Tšepo ea stebele: Kamora ho tima, ho thata ho emisa, ho thata ho hanyetsa ho hanyetsa ho lokile (makenete). Kamora ho emisa, tšepe e sa sebetseng e thata ho feta 420j1 steel (makenetic).
Ka kakaretso, mocheso o lekanyang oa 420J1 ke 980 ~ 1050 ℃. Ho thata ho ho futhumatsa 980 ℃ ho qhalana ha oli e tlase haholo ho feta 1050 ℃ o futhumatsang oli ea ho emisa. Ho thata ka mor'a ho chesa ha oli ea 980 ℃ Hrc45-50, le ho thatafala kamora 1050 ℃ Quenching ea 2hrc holimo. Leha ho le joalo, likokoana-hloko tse fumanoeng kamora ho tima li-1050 ℃ li na le mahoashe le brittle. Ho khothalletsoa ho sebelisa 1000 ℃ a futhumatsa le ho tima ho fumana sebopeho le thata.
Steels Steel 420 / 420J1 / 420J2 Sheets & Plates tse lekanang:
| Tloaelo | Jis | Wersktoff nr. | BS | Ho fapana | Sis | Ha e na | Aisi |
| SS 420 | SU 420 | 1.4021 | 420s29 | - | 2303 | S42000 | 420 |
| SS 420J1 | SUS 420J1 | 1.4021 | 420s29 | Z20c13 | 2303 | S42010 | 420l |
| SS 420J2 | SUA 420J2 | 1.4028 | 420S37 | Z20c13 | 2304 | S42010 | 420m |
SS420 / 420J1/ 420J2, maqephe a lik'hemik'hale tsa lik'hemik'hale (saky Steel):
| Keletso | C | Mn | Si | P | S | Cr | Ni | Mo |
| SU 420 | 0.15 max | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
| SUS 420J1 | 0.16-0.25 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
| SUA 420J2 | 0.26-0.40 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
SS 420 420J3 Maqephe a Liphate, Plates Thepa ea Mechine (Saky Steel):
| Keletso | Matla a Tenstile Max | Ba bang ka matla (0,2% Offset) Max | Emelongation (ka 2 ho.) |
| 420 | MPA - 650 | Mpa - 450 | 10% |
| 420J1 | MPA - 640 | Mpa - 440 | 20% |
| 420J2 | Mpa - 740 | MPA - 540 | 12% |
Ho thata ho tšepe ea letoto la 420 kamora kalafo ea mocheso e batla e le hrc52 ~ 55, 'me ts'ebetso ea likarolo tse fapaneng tse kang ho senya li hanyetsanang haholo ha li ikhethang haholo. Hobane ho bonolo ho khaola le ho khaola Poland, e loketse tlhahiso ea lithipa. 420 tšepe e se nang mabele e boetse e bitsoa "ho khaola sehlopha" tšepe ea Marapo. 420 Seriti sa sereri se nang le khatello e ntle ruri e na le mathata a eona a carbon (carbon dikahare: 0.16 ~ 0,25), ka hona ke tšepe e ntle bakeng sa tlhahiso ea lisebelisoa tsa ho qolla.
Nako ea poso: Jul-07-2020