Rauemi kowiri tira:
Ko nga mea kowiri tira he momo taonga, he tata ki te kanapa whakaata, he pa ki te uaua me te makariri, no nga mea whakapaipai ake avant-garde, he pai te aukati i te waikura, te hanga, te hototahi me te uaua me etahi atu ahuatanga raupapa, whakamahia i roto i te umanga taumaha. , ahumahi marama, ahumahi taonga whare me te whakapaipai whare me etahi atu ahumahi.
He kowiri tira waikawa kowiri tira e kiia ana he kowiri tira, he mea tito he kowiri tira me te rino atete waikawa e rua nga wahanga, i roto i te poto, ka taea te atete i te waikura hau o te rino e kiia nei he kowiri tira, a ka taea e ia te aukati i te waikura reo matū o te rino e kiia nei ko te waikawa atete steel.Generally korero, Ko te ihirangi chromium o Cr he nui ake i te 12% o te maitai he nga ahuatanga o te kowiri tira.
whakarōpū kowiri tira:
He maha nga tikanga o te whakarōpūtanga o te kowiri tira, kei roto ko nga mea tino noa ko nga mea e whai ake nei.
Te whakarōpūtanga hanganga Metallographic:
Ka taea te wehea ki te austenitic kowiri tira, ferrite kowiri tira, martensitic kowiri tira, matarua kowiri tira, precipitation whakapakeke kowiri tira.
whakarōpūtanga hanganga matū:
Ko te tikanga ka taea te wehea ki te chromium kowiri tira (penei i te raupapa ferrite, te punaha martensite) me te chromium nickel kowiri tira (penei i te punaha austenite, te raupapa rereke, te raupapa whakamaroke o te rerenga) e rua nga punaha.
E ai ki te momo parenga waikura:
Ka taea te wehea ki roto i te ahotea te waikura atete he kowiri tira, te pitting corrosion ātete kowiri tira, intergranular corrosion ātete kowiri tira, etc.
Kua whakarōpūhia e nga waahanga mahi:
Ka taea te wehea ki te tapahi kore utu he kowiri tira, he kowiri tira kore-aukume, he kowiri tira te wera iti, he kowiri tira teitei.
He tata ki te 100 nga momo kowiri tira kua whakauruhia ki roto i nga momo paerewa o te ao, me te ahunga whakamua o te pūtaiao me te hangarau me te whakawhanaketanga o te ahumahi me te ahuwhenua, kei te piki ake ano nga tohu kowiri tira hou. , ka taea te tatau i te ahua o te chromium [Cr] me te nickel orite [Ni] i runga i tana hanganga matū, a ka taea te whakatau tata te hangahanga moroiti me nga ahuatanga o te maitai ma te whakamahi i te tūtohi hangahanga moroiti kowiri tira Schaeffler-Delong.
whakarōpūtanga matrix:
1, ferrite kowiri tira.Chromium 12% ~ 30%.Ko tona parenga waikura, uaua me te weldability ka piki ake ki te piki o te ihirangi chromium, a he pai ake te kaha o te waikura chloride i etahi atu momo kowiri tira.
2. Austenitic kowiri tira.He nui atu i te 18% chromium, e pa ana ki te 8% nickel me te iti o te molybdenum, te titanium, te hauota me etahi atu huānga.He pai te mahi matawhānui, te aukati i te waikura ki nga momo momo panui.
3. Austenite-ferrite duplex kowiri tira.He nga painga o te austenite me te ferrite kowiri tira, me te superplasticity.
Martensitic kowiri tira.He kaha teitei, engari he kino te kirihou me te weldability.
Kowiri tira tepu whakataurite tau maitai me te tepu kiato
| Haina | Hapani | USA | Korea ki te Tonga | Te Kotahitanga o Europi | Ahitereiria | Taiwana, Haina | Kiato （ t/m3） |
| GB/T20878 | JIS | ASTM | KS | BSEN | AS | CNS | |
| SUS403 | 403 | STS403 | — | 403 | 403 | 7.75 | |
| 20Cr13 | SUS420J1 | 420 | STS420J1 | 1.4021 | 420 | 420J1 | 7.75 |
| 30Cr13 | SUS420J2 | — | STS420J2 | 1.4028 | 420J2 | 420J2 | 7.75 |
| SUS430 | 430 | STS430 | 1.4016 | 430 | 430 | 7.70 | |
| SUS440A | 440A | STS440A | — | 440A | 440A | 7.70 | |
| SUS304 | 304 | STS304 | 1.4301 | 304 | 304 | 7.93 | |
| SUS304L | 304L | STS304L | 1.4306 | 304L | 304L | 7.93 | |
| SUS316 | 316 | STS316 | 1.4401 | 316 | 316 | 7.98 | |
| SUS316L | 316L | STS316L | 1.4404 | 316L | 316L | 7.98 | |
| SUS321 | 321 | STS321 | 1.4541 | 321 | 321 | 7.93 | |
| 06Cr18Ni11Nb | SUS347 | 347 | STS347 | 1.455 | 347 | 347 | 7.98 |
Wā tuku: Akuhata-19-2021