Simbi yeSaky Simbi isina tsvina yeMartensitic imhando yesimbi isina tsvina yechromium inochengetedza magadzirirwo emartensitic patembiricha yemumba, ayo maitiro ayo anogona kugadziriswa nekupisa (kudzima nekupisa). Kazhinji, imhando yesimbi isina tsvina inoomesesa. Mushure mekudzima, tempering uye annealing, kuomarara kwesimbi isina tsvina ye440 kwakagadziridzwa zvakanyanya kupfuura kwemamwe masimbi asina tsvina uye anodzivirira kupisa. Inowanzoshandiswa mukugadzira mabheyaringi, maturusi ekucheka, kana mapurani epurasitiki anoda mitoro yakawanda uye kudzivirira kupfeka pasi pemamiriro ekuora. Simbi isina tsvina yeAmerican standard 440 series inosanganisira: 440A, 440B, 440C, 440F. Kabhoni ye440A, 440B uye 440C yakawedzera zvakateerana. 440F (ASTM A582) imhando yesimbi yekucheka yakasununguka ine huwandu hweS hwakawedzerwa zvichibva pa440C.
Magiredhi Akaenzana E440 SS
| wekuAmerica | ASTM | 440A | 440B | 440C | 440F |
| UNS | S44002 | S44003 | S44004 | S44020 | |
| ChiJapanese | JIS | SUS 440A | SUS 440B | SUS 440C | SUS 440F |
| ChiJerimani | DIN | 1.4109 | 1.4122 | 1.4125 | / |
| China | GB | 7Cr17 | 8Cr17 | 11Cr17 9Cr18Mo | Y11Cr17 |
Kuumbwa kweMakemikari e440 SS
| Magiredhi | 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) |
| 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) |
Cherechedza: kukosha kuri mumabhuraketi kunobvumirwa uye hazvimanikidzwi.
Kuomarara kwe440 SS
| Magiredhi | Kuomarara, Kunyungudutsa (HB) | Kurapa kupisa (HRC) |
| 440A | ≤255 | ≥54 |
| 440B | ≤255 | ≥56 |
| 440C | ≤269 | ≥58 |
| 440F | ≤269 | ≥58 |
Kufanana nesimbi yakajairika ye alloy, simbi isina tsvina yeSaky steel ye440 series Martensite ine hunhu hwekuomarara kuburikidza nekudzima, uye inogona kuwana hunhu hwakasiyana-siyana hwemakanika kuburikidza nekupisa kwakasiyana. Kazhinji, 440A ine mashandiro akanaka ekuomarara uye kuomarara kwakanyanya, uye kuomarara kwayo kwakakwira kupfuura kwe440B ne440C. 440B ine kuomarara uye kuomarara kwakanyanya kupfuura 440A ne440C ye maturusi ekucheka, maturusi ekuyera, mabheringi nemavharuvhu. Iyo 440C ine kuoma kwakanyanya kupfuura simbi dzese dzisina ngura uye simbi inodzivirira kupisa yemidziyo yekucheka yemhando yepamusoro, ma nozzles nemabheringi. 440F isimbi inocheka isina kuvharwa uye inonyanya kushandiswa mukugadzira ma lathes otomatiki.
Nguva yekutumira: Chikunguru-07-2020