Saky steel Martensitic igwe anaghị agba nchara bụ ụdị chromium igwe anaghị agba nchara nke na-edobe martensitic microstructure na ụlọ okpomọkụ, onye Njirimara nwere ike gbanwee site okpomọkụ ọgwụgwọ (quenching na tempering). N'ikwu okwu n'ozuzu, ọ bụ ụdị igwe anaghị agba nchara siri ike. Mgbe emenyụchara, iwe ọkụ na usoro mgbakasị ahụ, ike nke igwe anaghị agba nchara 440 emeela ka ọ dịkwuo mma karịa nke igwe anaghị agba nchara na ọkụ na-eguzogide ndị ọzọ. A na-ejikarị ya eme ihe na-ebu ibu, ngwaọrụ ịkpụ, ma ọ bụ ihe ọkpụkpụ plastik nke chọrọ ibu dị elu ma na-eyi nguzogide n'okpuru ọnọdụ mmebi. American ọkọlọtọ 440 usoro igwe anaghị agba nchara gụnyere: 440A, 440B, 440C, 440F. Ọdịnaya carbon nke 440A, 440B na 440C mụbara otu ugboro. 440F (ASTM A582) bụ ụdị nchara nchara n'efu yana ọdịnaya S agbakwunyere na ndabere nke 440C.
Akara akara nke 440 SS
| American | ASTM | 440A | 440B | 440C | 440F |
| UNS | S44002 | S44003 | S44004 | S44020 | |
| Japanese | JIS | SUS 440A | SUS 440B | SUS 440C | SUS 440F |
| German | DIN | 1.4109 | 1.4122 | 1.4125 | / |
| China | GB | 7Cr17 | 8Cr17 | 11Cr17 9Cr18Mo | Y11Cr17 |
Ngwakọta kemịkalụ nke 440 SS
| akara ule | 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) |
Mara: A na-anabata ụkpụrụ dị na braket ọ bụghị iwu.
Ike nke 440 SS
| akara ule | Isi ike, Annealing (HB) | ọgwụgwọ okpomọkụ (HRC) |
| 440A | ≤255 | ≥54 |
| 440B | ≤255 | ≥56 |
| 440C | ≤269 | ≥58 |
| 440F | ≤269 | ≥58 |
Yiri nkịtị alloy ígwè, Saky steel's 440 series Martensite igwe anaghị agba nchara nwere àgwà nke hardening site quenching, na ike nweta a dịgasị iche iche nke n'ibu Njirimara site dị iche iche okpomọkụ ọgwụgwọ. N'ozuzu, 440A nwere ọmarịcha ịrụ ọrụ ike na ike siri ike, na ike ya dị elu karịa nke 440B na 440C. 440B nwere ike na ike dị elu karịa 440A na 440C maka ngwaọrụ ịkpụ, ngwaọrụ nha, bearings na valves. 440C nwere ike kachasị elu nke igwe anaghị agba nchara na igwe na-eguzogide okpomọkụ maka ngwaọrụ ịkpụ dị elu, nozzles na bearings. 440F bụ igwe anaghị egbu egbu ma na-ejikarị ya na lathes akpaka.
Oge nzipu: Jul-07-2020