Ko te maitai kore-wera ātete noa e wehea ana kia toru ngā momo, arā, ko te 309S, 310S me te 253MA. He maha ngā wā ka whakamahia te maitai ātete-wera ki te hanga i ngā kōhua, ngā tāpoi mamaoa, ngā oumu ahumahi me te rererangi, te hinu matū me ētahi atu ahumahi i ngā wāhanga mahi pāmahana teitei.
1.309s: (OCr23Ni13) pereti maitai kore waikura
Ngā Āhuatanga: Ka taea e ia te tu atu i te whakamahana auau i raro i te 980 ℃, he kaha teitei ki te pāmahana teitei, he ātete ki te waikura me te ātete ki te warowaihā.
Taupānga: rauemi oumu, ka taea te whakamahi hei hanga wāhanga maitai wera, Ko tōna ihirangi chromium me te nickel teitei e whakarite ana i te ātete pai ki te waikura me te ātete waikura.
Ki te whakatauritea ki te koranu austenitic 304, he paku kaha ake i te pāmahana rūma. I te ao tūturu, ka taea te whakamahana anō i te 980°C kia mau tonu ai te mahi noa. 310s: (0Cr25Ni20) pereti maitai kore waikura.
2.310s: (OCr25Ni20) pereti maitai kore waikura
Ngā Āhuatanga: He maitai kore waikura austenitic teitei te chromium-nickel, he pai ngā āhuatanga miihini pāmahana teitei, ā, he pai te ātete ki te waikura i roto i ngā rauemi waikura. He pai mō te hanga i ngā momo wāhanga oumu, ko te pāmahana teitei rawa ko te 1200 ℃, ko te pāmahana whakamahi tonu ko te 1150 ℃.
Taupānga: rauemi oumu, rauemi taputapu purenga waka.
Ko te maitai kore waikura 310S he koranu maitai kore waikura austenitic tino ātete ki te waikura e whakamahia ana i roto i ngā taiao pāmahana teitei me te waikura. He kōwhiringa pai rawa atu mō ngā tono i roto i ngā ahumahi petrochemical, matū, me te whakamahana-wera, tae atu ki ngā wāhanga oumu me ētahi atu tono pāmahana teitei. Ko te pereti maitai kore waikura 310S he pepa papatahi, angiangi i hangaia mai i tēnei koranu motuhake.
3.Pereti maitai kore waikura 253MA (S30815)
Ngā Āhuatanga: He maitai kore waikura Austenitic ātete-wera te 253MA, ā, he mea hanga mō ngā mahi e hiahia ana ki te kaha ngoki me te ātete pai ki te waikura. Ko tōna awhe pāmahana mahi he 850-1100 ℃.
Ko te 253MA he momo koranu kowiri tira motuhake i hangaia mō ngā tono pāmahana teitei. He ātete pai ki te waikura, te sulfidation, me te carburization i ngā pāmahana teitei. Nā tēnei he pai mō te whakamahi i roto i ngā ahumahi maha, tae atu ki ngā mea e pā ana ki te wera me te waikura, pērā i te petrochemical, te whakaputa hiko, me ngā wāhanga oumu ahumahi.He rauemi angiangi, papatahi ngā rau 253MA, he mea hanga mai i tēnei koranu. E whakamahia ana i roto i ngā momo mahi e hiahiatia ana te whakakotahitanga o te ātete pāmahana teitei me te ātete waikura. Ka taea te tapahi me te hanga i ngā rau ki ngā āhua rerekē hei whakatutuki i ngā whakaritenga motuhake o tētahi kaupapa.
Ngā Rau, Ngā Pereti 253MA, Te Hanganga Matū
| Tau | C | Cr | Mn | Si | P | S | N | Ce | Fe | Ni |
| 253MA | 0.05 – 0.10 | 20.0-22.0 | 0.80 mōrahi | 1.40-2.00 | 0.040 mōrahi | 0.030 mōrahi | 0.14-0.20 | 0.03-0.08 | Taurite | 10.0-12.0 |
Ngā āhuatanga miihini o te pereti 253MA
| Kaha Kume | Kaha Hua (0.2% Whakakorenga) | Te roa (i roto i te 2 inihi) |
| Psi:87,000 | Psi 45000 | 40% |
Te ātete ki te waikura o te pereti 253MA me te taiao whakamahinga matua:
1. Ātete ki te Waikura: He tino pai te ātete waikura o te 253MA, te ātete ki te waikura i te pāmahana teitei, me te kaha miihini whakamiharo i te pāmahana teitei. He tino whai hua i roto i te awhe pāmahana mai i te 850 ki te 1100°C.
2. Awhe Pāmahana: Mō te mahi tino pai, he pai te 253MA mō te whakamahi i roto i te awhe pāmahana mai i te 850 ki te 1100°C. I ngā pāmahana i waenga i te 600 me te 850°C, ka puta ngā huringa hanganga, ka heke te pakari o te pānga i te pāmahana rūma.
3. Kaha Ā-Mīhini: He nui ake te kaha kume poto o tēnei koranu i ngā maitai kore waikura noa, pērā i te 304 me te 310S, i ngā pāmahana rerekē mā te 20%.
4. Te Hanganga Matū: He hanganga matū taurite te 253MA e homai ana he mahi tino pai i roto i te awhe pāmahana o te 850-1100°C. He tino teitei te ātete ki te waikura, e tu atu ana i ngā pāmahana tae atu ki te 1150°C. He pai ake hoki te ātete ngoki me te kaha pakaru ngoki.
5. Ātete ki te Waikura: Haunga ōna āheinga pāmahana teitei, he tino pai te ātete a te 253MA ki te waikura pāmahana teitei me te waikura paraihe i te nuinga o ngā taiao hau.
6. Kaha: He kaha tuku teitei, he kaha kume hoki i ngā pāmahana teitei.
7. Te Āhua me te Āhua Whakarewa: E mōhiotia ana te 253MA mō tōna āhua pai, tōna āhua whakarewa, me tōna āhua mīhini.
Wā tuku: Oketopa-09-2023