Hauv cov lag luam ua tau zoo xws li aerospace, chemical processing, thiab power generation,15-7PH stainless hlauyog dav paub txog nwslub zog zoo heev, kev tawv, thiab kev tiv thaiv corrosionTiam sis lub cuab yeej uas ua rau nws txawv ntawm lwm tus yog nws likev kho cua sovLos ntawm kev tswj hwm thermal ua tiav, cov hlau no tuaj yeem ua tiav ntau yam khoom siv kho tshuab, los ntawm kev ua haujlwm siab rau kev tsim mus rau qhov nyuaj tshwj xeeb rau cov chaw ua haujlwm nyuaj.
Tsab xov xwm no los ntawmSAKYSTEELmuab ib qho kev saib tob tob ntawmCov xwm txheej kho cua sov muaj rau 15-7PH stainless hlau, piav qhia txog cov txheej txheem, qhov kub thiab txias, thiab cov txiaj ntsig ntawm txhua yam mob. Txawm koj yog ib tug engineer, fabricator, lossis metallurgist, kev nkag siab txog cov xwm txheej kho cua sov no yuav pab koj xaiv qhov kev sib xyaw ua ke ntawm kev ua tau zoo thiab kev tsim khoom rau koj daim ntawv thov.
1. Kev Taw Qhia Txog 15-7PH Stainless Steel
15-7PH stainless hlau(UNS S17700, ASTM A693 Hom 631) yog ib qhocov hlau tsis xeb martensitic uas ua kom nag lossis daus-hardeninguas muaj kwv yees li15% chromium, 7% nickel, thiab 1% txhuasLub npe "PH" txhais tau hais tias nws muaj peev xwm ua tautawv los ntawm kev kho cua sov nag lossis daus.
Tsim los ua kev txhim kho dua li 17-7PH, cov hlau no muab lub zog siab dua thiab kev ruaj khov thermal zoo dua. Nws tuaj yeem tsim tau yooj yim hauv nws qhov xwm txheej annealed thiab tom qab ntawd kho cua sov kom tsim tau qhov nyuaj siab thiab cov khoom muaj zog tsim nyog rau cov ntawv thov tseem ceeb.
2. Cov Tshuaj Lom Zem
| Khoom | Cov Ntsiab Lus Ib Txwm Muaj (%) | Lub Hom Phiaj |
|---|---|---|
| Chromium (Cr) | 14.0–16.0 | Muab kev tiv thaiv corrosion |
| Nickel (Ni) | 6.5–7.8 | Txhim kho qhov tawv thiab ruaj khov |
| Txhuas (Al) | 0.75–1.5 | Tus neeg sawv cev ua kom tawv tawv tseem ceeb |
| Cov pa roj carbon (C) | ≤ 0.09 | Kev tswj lub zog thiab hardness |
| Manganese (Mn) | ≤ 1.00 | Txhim kho lub zog |
| Silicon (Si) | ≤ 1.00 | Txhim kho kev tiv thaiv oxidation |
| Phosphorus (P) | ≤ 0.04 | Tswj rau ductility |
| Sulfur (S) | ≤ 0.03 | Txhim kho kev siv tshuab tau zoo dua |
| Hlau (Fe) | Qhov Nyiaj Tshuav | Lub hauv paus ntsiab lus |
Kev sib xyaw ua ke ntawm nickel thiab txhuas ua rau muaj kev cuam tshuam loj heev rau kev ua haujlwm ntawm cov khoom siv hluav taws xob.nag lossis daus ntawm Ni₃Al compoundsthaum lub sijhawm laus, uas ua rau lub alloy muaj zog heev thaum khaws cia kom muaj zog txaus.
3. Kev Kho Mob Kub
15-7PH stainless hlau tuaj yeem muab thiab ua tiav hauv ntau txoj kev kho cua sovtej yam kev mobkom ua tiav kev sib xyaw ua ke ntawm lub zog, qhov tawv, thiab kev yoog tau. Cov xwm txheej feem ntau yog:
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Xwm txheej A:Cov tshuaj tau annealed
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Mob RH950:Kev hloov pauv ntawm Austenite rau martensite thiab kev laus
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Mob TH1050:Ua haujlwm txias ua raws li kev laus
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Mob RHT 900–1150:Kev kho mob kub siab tshwj xeeb
Txhua qhov xwm txheej muaj cov kauj ruam thermal thiab mechanical sib txawv uas tsim los ua kom cov khoom siv zoo tshaj plaws rau kev siv tshwj xeeb.
4. Mob A - Kev daws teeb meem Annealed
4.1 Kev Piav Qhia
Hauv qhov xwm txheej no, 15-7PH yogkev daws teeb meem khokwv yees li ntawm1038°C (1900°F)rau 1 teev tom qab ntawdcua txiasCov qauv tsim tawm yogaustenitic, uas muab qhov siab tshaj plaws ductility thiab tso cai rau cov khoom siv kom yooj yim tsim, kos tob, lossis tig mus rau hauv cov duab ua ntej hardening kawg.
4.2 Cov Ntawv Thov Ib Txwm Muaj
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Kev tsim daim ntawv thiab stamping
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Cov Bellows thiab diaphragms
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Cov khoom uas xav tau kev ua kom zoo nkauj ua ntej laus
4.3 Cov Khoom Siv Kho Tshuab (Ib txwm muaj)
| Vaj tse | Tus nqi |
|---|---|
| Lub zog tensile | 1050 MPa |
| Lub Zog Tawm | 850 MPa |
| Kev ntev | 18–20% |
| Qhov nyuaj | 25–30 HRC |
Mob A tsis yog lub xeev kawg rau feem ntau ntawm cov ntawv thov kev lag luam - nws feem ntau yog ua raws li kev ua haujlwm txias thiab laus rau lub zog siab dua.
5. Mob RH950 - Cov nag los nag hlob
5.1 Kev Piav Qhia
Mob RH950 (RH = "Kev Kho Mob Kub Rov Qab") yog ua tiav los ntawm:
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Cov tshuaj kho cov hlau ntawm 1038 ° C (Zauv A).
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Txias rau chav tsev kub.
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Cua sov rau955°C (1750°F)rau 1 teev.
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Txias sai sai rau qhov kub thiab txias hauv chav.
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Laus ntawm510°C (950°F)rau 4 teev, ua raws li cua txias.
Thaum lub sijhawm no, cov qauv hloov pauv ntawm austenitic mus rau martensitic, thiab txhuas-nickel precipitates tsim, ua rau lub zog thiab hardness nce ntxiv dramatically.
5.2 Cov Khoom Siv Kho Tshuab
| Vaj tse | Tus nqi |
|---|---|
| Lub zog tensile | 1400–1450 MPa |
| Lub Zog Tawm | 1200–1300 MPa |
| Kev ntev | 8–10% |
| Qhov nyuaj | 42–46 HRC |
5.3 Cov Ntsiab Lus Tseem Ceeb
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Muaj zog heev nrog kev ua haujlwm zoo
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Kev ua haujlwm qaug zog zoo heev
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Kev ruaj khov zoo
5.4 Cov Ntawv Thov Ib Txwm Muaj
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Cov Springs thiab cov fasteners
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Cov khoom siv aerospace
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Cov khoom siv fais fab turbine
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Cov diaphragms siab muaj zog
Mob RH950 yog qhovmob feem ntaurau 15-7PH hauv kev siv aerospace thiab precision.
6. Mob TH1050 - Ua Haujlwm Txias thiab Laus
6.1 Kev Piav Qhia
Kev Kho Mob TH1050 (TH = "Kev Kho Mob Kub Hloov Pauv") yog siv thaum xav tau lub zog siab dua. Nws suav nrog:
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Kev kho cov tshuaj ntawm 1038 ° C rau 1 teev (Zoo li A).
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Txo qhov txias ntawm 60-70% kom hloov austenite mus rau martensite.
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Laus ntawm565°C (1050°F)rau 1 teev, ua raws li cua txias.
6.2 Cov qauv me me
Cov kauj ruam ua haujlwm txias txhawb kev hloov pauv tag nrho mus rau martensite ua ntej laus, ua rau muajcov qauv nplej zoo thiab sib xwsnrog lub zog zoo dua.
6.3 Cov Khoom Siv Kho Tshuab
| Vaj tse | Tus nqi |
|---|---|
| Lub zog tensile | 1500–1600 MPa |
| Lub Zog Tawm | 1300–1450 MPa |
| Kev ntev | 6–8% |
| Qhov nyuaj | 44–48 HRC |
6.4 Cov Ntsiab Lus Tseem Ceeb
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Lub zog siab tshaj plaws rau 15-7PH
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Kev qaug zog zoo heev thiab kev hnav tsis kam
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Txo qhov corrosion tsis kam me ntsis piv rau RH950
6.5 Cov Ntawv Thov Ib Txwm Muaj
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Cov khoom siv hauv aerospace
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Cov caij nplooj ntoos hlav thiab cov khoom siv valve ua haujlwm tau zoo
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Cov khoom siv txuas uas xav tau qhov siab tshaj plaws ntawm kev thauj khoom
Tus mob TH1050 sawv cev raulub zog siab tshaj plawsrau qhov kev sib xyaw no.
7. Kev Kho Mob Kub Kub Tshwj Xeeb
Ntxiv rau RH950 thiab TH1050, lwm yamkev hloov kho cua sov raws li qhov xav taumuaj los kho cov khoom ntawm 15-7PH rau cov chaw tshwj xeeb.
| Mob | Kub (°F) | Kev piav qhia | Qhov tshwm sim |
|---|---|---|---|
| RHT900 | 900 | Qhov kub qis dua qub | Muaj zog dua, qis dua qhov tawv |
| RHT1000 | 1000 | Nruab nrab ntau yam | Lub zog thiab kev tawv nqaij sib npaug |
| RHT1150 | 1150 | Kub dua thaum laus | Txhim kho ductility thiab corrosion tsis kam |
Cov kev kho mob no tuaj yeem kho qhov sib npaug ntawm lub zog, qhov nyuaj, thiab kev ntxhov siab-kev tiv thaiv xeb nyob ntawm qhov chaw pabcuam xav tau.
8. Kev Sib Piv ntawm Cov Kev Kho Mob Kub
| Vaj tse | Mob A | RH950 | TH1050 |
|---|---|---|---|
| Qauv | Austenitic | Martensitic + Precipitates | Martensitic + Precipitates |
| Lub zog Tensile (MPa) | 1050 | 1450 xyoo | 1600 xyoo |
| Qhov nyuaj (HRC) | 30 | 45 | 48 |
| Kev yoog tau | Siab | Nruab nrab | Qis |
| Kev Tiv Thaiv Kev Xeb | Zoo heev | Zoo heev | Zoo |
| Kev ua tau zoo | Zoo heev | Txwv | Txwv |
| Kev Siv Ib Txwm Muaj | Kev Tsim / Kev Tsim Khoom | Aerospace / Springs | Cov khoom siv hnyav |
Qhov kev sib piv no qhia txog yuav ua li cas kev kho cua sov sib txawv tsim kev ywj pheej hauv kev siv 15-7PH thoob plaws ntau yam lag luam.
9. Metallurgical Mechanism ntawm Precipitation Hardening
Tus yuam sij rau 15-7PH lub zog yog nyob rau hauv kev tsim cov khoom zooNi₃Al precipitatesthaum lub sijhawm laus. Cov precipitates no ua rau muaj kev cuam tshuam rau kev txav mus los, uas ua rau lub zog ntawm cov qoob loo nce ntxiv.
Cov txheej txheem hloov pauv tuaj yeem sau ua ke raws li:
Austenite → Martensite → Martensite + Ni₃Al Precipitates
Los ntawm kev kho qhov kub thiab lub sijhawm laus, cov engineers tuaj yeem tswj tau qhov tseebqhov loj thiab kev faib tawmntawm cov precipitates no, kho qhov hardness thiab toughness rau txhua daim ntawv thov.
10. Kev Ceeb Toom Txog Kev Kho Mob Kub
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Kev Tswj Kub:Kev laus dhau ntawm 600 ° C yuav txo qhov nyuaj vim yog coarsening ntawm precipitates.
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Kev Tswj Huab Cua:Siv cov cub tawg uas siv lub tshuab nqus tsev los yog cov roj inert kom tsis txhob muaj oxidation thiab scaling.
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Kev Tswj Xyuas Kev Distortion:Txhawb cov khoom sib xyaw kom txo qis kev nkhaus thaum lub sijhawm txias.
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Kev Laus Tom Qab Weld:Cov khoom sib txuas ua ke hauv qhov xwm txheej annealed yuav tsum tau laus tom qab ntawd kom rov qab muaj zog.
Kev ua raws li cov lus qhia no kom zoo ua kom muaj cov khoom zoo sib xws thiab kev ua haujlwm txhim khu kev qha.
11. Cov nyhuv ntawm kev kho cua sov rau kev tiv thaiv corrosion
Thaum 15-7PH muab kev tiv thaiv corrosion zoo hauv txhua qhov kev kho cua sov, qhovmob annealed (A)qhia txog qhov zoo tshaj plaws tiv taus vim nws cov qauv austenitic. Thaum qhov nyuaj nce ntxiv los ntawm kev laus, qhov kev tiv thaiv corrosion me ntsis txo qis, tshwj xeeb tshaj yog nyob rau hauv cov chaw muaj chloride.
Yuav kom txhim kho kev tiv thaiv ntawm qhov chaw,kev ua kom tsis muaj zogthiabkev txhuam hniavraug pom zoo tom qab kev kho mob laus.
12. Piv txwv li Kev Kho Mob Kub (RH950)
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Kev daws teeb meem Anneal:Ua kom sov txog 1038°C (1900°F) li 1 teev, cua txias.
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Kauj Ruam RH:Ua kom sov rau 955°C (1750°F) li 1 teev, cua txias.
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Kev Ua Kom Ruaj Khov Thaum Muaj Hnub Nyoog:Ua kom sov txog 510°C (950°F) li 4 teev, cua txias.
Qhov Tshwm Sim: Lub zog tensile ~1450 MPa, qhov nyuaj 45 HRC, elongation 10%.
Cov kab ke no tsim cov kev sib xyaw ua ke ntawm lub zog siab thiab ductility zoo tagnrho rau cov ntawv thov aerospace.
13. Cov ntawv thov los ntawm Cov Xwm Txheej
| Mob | Kev Lag Luam | Cov Cheebtsam Ib Txwm Muaj |
|---|---|---|
| Mob A | Kev Tsim Kho / Kev Tsim Kho Aerospace | Cov khoom siv bellows, diaphragms, springs |
| RH950 | Zog / Tshuaj | Cov twj tso kua dej siab, cov foob turbine |
| TH1050 | Kev Ua Si thiab Kev Tiv Thaiv Huab Cua | Cov khoom siv txuas, cov actuators |
| Kev Cai RHT | Tub Rog / Fais Fab | Cov ntsia hlau thiab cov nplhaib uas tiv taus xeb |
Lub peev xwm los kho cov khoom siv kho tshuab los ntawm kev kho cua sov ua rau 15-7PH yog cov hlau sib xyaw ua ke tiag tiag.
14. Kev Ruaj Ntseg Kub thiab Kev Txwv Kev Pabcuam
15-7PH stainless hlau tswj tau lub zog kho tshuab zoo heev txog li550°C (1020°F). Tshaj li qhov no, kev laus dhau tuaj yeem txo qhov nyuaj thiab kev qaug zog. Hauv cov ntawv thov cryogenic, nws khaws cov tawv nqaij kom txog rau-200°C, ua rau nws tsim nyog rau ob qho tib si kub thiab qis kub kev pabcuam.
15. Kev Tswj Xyuas Zoo thiab Kev Ntsuas ntawm SAKYSTEEL
SAKYSTEELsiv cov qauv kev ruaj ntseg zoo thoob plaws txhua theem kev kho cua sov kom lav qhov ua tau zoo sib xws.
Tag nrho cov ntaub ntawv yog:
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Kho cua sov hauvcov cub tawg uas tswj tau huab cua
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Tau txheeb xyuas los ntawmkev ntsuam xyuas hardness thiab tensile
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Tau kuaj xyuas rauQhov loj ntawm cov noob thiab microstructure
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Muab nrogEN 10204 3.1 / 3.2 daim ntawv pov thawj
(Lub logo SAKYSTEEL)
Txhua txoj hlua, phaj, thiab hlau yog qhov taug qab tau tag nrho, ua kom ntseeg tau tias muaj kev ntseeg siab rau cov ntawv thov kev lag luam tseem ceeb.
16. SAKYSTEEL Muab Khoom Siv Rau 15-7PH
Peb muab 15-7PH stainless hlau hauv cov qauv thiab cov xwm txheej hauv qab no:
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Cov Tuav thiab Cov Qws Sib Hloov- Annealed, RH950, lossis TH1050
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Cov Phaj & Cov Ntawv- Kho nrog cov tshuaj los yog laus dua
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Cov Hlau & Cov Kab Hlau- Txias-kos thiab nag-hardened
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Cov Khoom Txiav Thiab Cov Nplhaib- Kho cua sov raws li cov lus qhia tshwj xeeb
Cov kev pabcuam kho cua sov tshwj xeeb kuj muaj raws li cov neeg siv khoom xav tau.
17. Cov txiaj ntsig ntawm Kev Kho Mob Kub 15-7PH
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Qhov Sib Piv Siab Rau Qhov Hnyav
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Kev Ruaj Ntseg ntawm Qhov Ntev Thaum Lub Sijhawm Laus
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Lub Neej Qaug Zog Zoo Kawg Nkaus
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Cov Khoom Siv Kho Tshuab Uas Kho Tau
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Kev Ua Haujlwm Zoo Sib Xws ntawm Qhov Kub Siab
Cov yam ntxwv no ua rau 15-7PH yog qhov kev daws teeb meem zoo tshaj plaws rau cov teeb meem kev tsim kho hauv ntau yam lag luam.
18. Kev Sib Piv Nrog Lwm Cov Hlau Stainless PH
| Cov hlau nplaum | Cov Khoom Siv Kho Kom Ruaj Khoov | Lub Zog Siab Tshaj Plaws (MPa) | Kub Tshaj Plaws (°C) | Kev vuam tau |
|---|---|---|---|---|
| 15-7PH | Aluminium | 1500+ xyoo | 550 | Zoo |
| 17-4PH | Tooj liab | 1300 | 315 | Zoo heev |
| 17-7PH | Aluminium | 1300 | 425 | Zoo |
15-7PH ua tau zoo dua 17-4PH thiab 17-7PH hauvlub zog kub siab thiab kev qaug zog tsis kam, txawm hais tias 17-4PH tseem yooj yim dua rau kev vuam thiab tiv taus xeb ntau dua hauv cov xwm txheej hauv dej hiav txwv.
19. Cov Lus Qhia Txog Kev Kho Mob Kub
| Mob | Kub Ntau Yam (°C) | Qhov Tshwm Sim Tseem Ceeb |
|---|---|---|
| A | 1038 | Annealed, mos, formable |
| RH950 | 510 | Muaj zog heev, ductility zoo |
| TH1050 | 565 | Qhov nyuaj tshaj plaws, kev qaug zog siab |
| RHT900–1150 | 480–620 | Kev sib npaug ntawm lub zog / tawv nqaij |
Los ntawm kev xaiv qhov xwm txheej tsim nyog, cov neeg tsim qauv tuaj yeem phim cov alloy qhov kev ua tau zoo rau cov kev cai ua haujlwm.
20. Xaus Lus
15-7PH stainless hlaumuaj kev ywj pheej zoo heev los ntawm nws cov kev kho cua sov ntau yam. Los ntawm cov mos mos, cov duab zoo nkaujMob Amus rau lub zog siab heevTH1050cov xwm txheej, cov hlau no tuaj yeem tsim kho kom tau raws li ntau yam kev xav tau ua haujlwm - los ntawm cov caij nplooj ntoos hlav aerospace thiab diaphragms mus rau cov khoom siv turbine thiab cov khoom siv valve.
Qhov muajcov kev xaiv kho cua sov— RH950, TH1050, thiab cov kev hloov pauv RHT tshwj xeeb — muab kev tswj hwm tsis muaj kev sib piv rau kev ua haujlwm ntawm lub tshuab, ua kom ntseeg tau tias muaj kev ntseeg siab txawm tias nyob hauv qhov kev ntxhov siab hnyav, kub, lossis qaug zog.
At SAKYSTEEL, peb muab cov ntaub ntawv stainless hlau 15-7PH uas tau ntawv pov thawj hauv txhua qhov kev kho cua sov tus qauv thiab kev cai, tsim tawm raws li cov qauv zoo nruj thiab txhawb nqa los ntawm cov ntaub ntawv pov thawj tag nrho.
Lub sijhawm tshaj tawm: Lub Kaum Hli-29-2025