ʻO ke kila Saky ʻO ke kila kila Martensitic kahi ʻano chromium stainless steel e mālama ana i ka microstructure martensitic ma ka lumi wela, nona nā waiwai e hiki ke hoʻoponopono ʻia e ka hoʻomaʻamaʻa wela (quenching and tempering). ʻO ka ʻōlelo maʻamau, he ʻano kila kuhili ʻole paʻakikī. Ma hope o ka hoʻopiʻi ʻana, ka hoʻoulu ʻana a me ke kaʻina hana annealing, ua hoʻomaikaʻi maikaʻi ʻia ka paʻakikī o ka 440 stainless steel ma mua o nā mea ʻē aʻe a me nā kila wela. Hoʻohana maʻamau ia i ka hana ʻana i ka bearing, nā mea ʻoki ʻoki, a i ʻole nā polokalamu plastic e koi ai i nā haʻahaʻa kiʻekiʻe a hoʻopaʻa i ke kūpaʻa ma lalo o nā kūlana corrosive. ʻAmelika maʻamau 440 series stainless steel me: 440A, 440B, 440C, 440F. Ua hoʻonui ʻia ka maʻiʻo kalapona o 440A, 440B a me 440C. ʻO 440F (ASTM A582) kahi ʻano o ke kila ʻoki manuahi me ka ʻike S i hoʻohui ʻia ma ke kumu o 440C.
Nā Papa Kaulike o 440 SS
| ʻAmelika | ASTM | 440A | 440B | 440C | 440F |
| UNS | S44002 | S44003 | S44004 | S44020 | |
| Kepanī | JIS | SUS 440A | SUS 440B | SUS 440C | SUS 440F |
| Alemania | DIN | 1.4109 | 1.4122 | 1.4125 | / |
| Kina | GB | 7Cr17 | 8Cr17 | 11Cr17 9Cr18Mo | Y11Cr17 |
Huina Kemika O 440 SS
| Papa helu | 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) |
E hoʻomaopopo: ua ʻae ʻia nā waiwai i loko o nā bracket a ʻaʻole koi.
Ka paakiki o 440 SS
| Papa helu | Paʻakiki, Hoʻopili (HB) | Hana wela (HRC) |
| 440A | ≤255 | ≥54 |
| 440B | ≤255 | ≥56 |
| 440C | ≤269 | ≥58 |
| 440F | ≤269 | ≥58 |
E like me ke kila kila maʻamau, ʻo Saky steel's 440 series Martensite stainless steel nā hiʻohiʻona o ka paʻakikī ma o ke kinai ʻana, a hiki ke loaʻa i ka nui o nā waiwai mechanical ma o ka mālama ʻana i ka wela. Ma keʻano laulā, 440A ka hana paʻakikī maikaʻi loa a me ka paʻakikī kiʻekiʻe, a ʻoi aku kona paʻakikī ma mua o 440B a me 440C. ʻO 440B ka ʻoi aku ka paʻakikī a me ka paʻakikī ma mua o 440A a me 440C no nā mea hana ʻoki, nā mea ana, nā bearings a me nā kiwi. ʻO ka 440C ka paʻakikī kiʻekiʻe loa o nā kila kila a me ke kila wela no nā mea ʻoki kiʻekiʻe, nā nozzles a me nā bearings. ʻO 440F he kila ʻoki manuahi a hoʻohana nui ʻia i nā lathes aunoa.
Ka manawa hoʻouna: Jul-07-2020