Insimbi ye-Saky Steel Insimbi Engagqwali ngohlobo lwensimbi ye-chromium engagqwali egcina i-mickercucture ye-martensitic emazingeni okushisa asekamelweni, okuhlanza izimo zawo ezihlotshiswe ngokwelashwa okushisa (ukujuluka nokugunda). Ngokuvamile, kuwuhlobo lwensimbi engenasici. Ngemuva kokucima, inqubo yokuguga nenhlangano, ubulukhuni bensimbi engu-440 engagqwali yenziwe ngcono kakhulu kunalokho kwenye insimbi engamelana ne-stainless and atterant. Isetshenziswa kakhulu ekwenziweni kwamathuluzi okuzala, ukusika amathuluzi, noma isikhunta sepulasitiki esidinga imithwalo ephezulu futhi ugqoke ukumelana ngaphansi kwezimo ezilimazayo. I-American Standard 440 Insimbi engenacala kufaka phakathi: 440a, 440B, 440C, 440F. Okuqukethwe yikhabhoni ka-440a, 440b no-440C bakhuphuke ngokulandelana. I-440F (ASTM A582) uhlobo lwensimbi yokusika yamahhala ngokuqukethwe okungeziwe ngesisekelo se-440C.
Amamaki alinganayo angama-440 ss
| -SeMelika | Isosha | 440a | 440b | I-440C | 440f |
| -Hloniphayo | S44002 | S44003 | S44004 | S44020 | |
| IsiJapan | Jiki | Sus 440a | I-SUS 440B | I-SUS 440C | Sus 440f |
| IsiJalimane | Ihlinzayo | 1.4109 | 1.4122 | 1.4125 | / |
| Izitsha zokudlela zebumba uqobo | GB | I-7cr17 | I-8CR17 | I-11CR17 I-9Cr18MO | Y11CR17 |
Ukwakheka kwamakhemikhali ama-440 ss
| Ithathe | C | Si | Mn | P | S | Cr | Mo | Cu | Ni |
| 440a | 0.6-0.75 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440b | 0.75-0.95 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| I-440C | 0.95-1.2 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440f | 0.95-1.2 | ≤1.00 | ≤1.25 | ≤0.06 | ≥0.15 | 16.0-18.0 | / | (≤0.6) | (≤0.5) |
QAPHELA: Amanani kubakaki avumelekile futhi angaphoqelekile.
Ubulukhuni bama-440 ss
| Ithathe | Ubulukhuni, Ukungena (HB) | Ukwelashwa kokushisa (HRC) |
| 440a | ≤255 | ≥54 |
| 440b | ≤255 | ≥56 |
| I-440C | ≤269 | ≥58 |
| 440f | ≤269 | ≥58 |
Ifana nensimbi evamile ye-alloy, i-saky yensimbi 440 Insimbi engenacala engenacala inezimpawu zokuqina ngokuqina, futhi ingathola izakhiwo eziningi zemishini zokwelashwa okuhlukile. Ngokuvamile, 440a inokusebenza okuhle kakhulu okuqinisayo nobulukhuni obuphezulu, futhi ubunzima bayo buphakeme kunaleso 440B no-440C. I-440b inobulukhuni obuphakeme nobunzima kune-440a ne-440C ye Amathuluzi okusika, amathuluzi okulinganisa, ama-bearings nama-valve. I-440C inobulukhuni obukhulu kunazo zonke zensimbi engenasici kanye nensimbi yokuvimbela ukushisa kwamathuluzi aphezulu okusika, ama-nozzles kanye namabele. I-440F iyinsimbi yokusika mahhala futhi isetshenziswa kakhulu ekuthengeni okuzenzakalelayo.
Isikhathi sePosi: Jul-07-2020