Ntawm tsev neeg ntawm cov hlau tsis xeb uas siv rau hauv kev tsav dav hlau, kev ua tshuaj lom neeg, thiab kev tsim hluav taws xob,15-7PH stainless hlausawv tawm rau nws qhov kev sib xyaw ua ke ntawmmuaj zog heev, tiv taus corrosion zoo, thiab versatility kho cua sovIb qho ntawm cov lus nug txog kev siv tshuab feem ntau txog cov hlau no yog nws covqhov ceev thiab qhov ntau ntawm kev yaj, ob qho kev ntsuas tseem ceeb rau cov engineers xam qhov hnyav, kev ua haujlwm thermal, thiab kev ua haujlwm casting lossis forging.
Hauv tsab xov xwm no,SAKYSTEELmuab ib qho kev piav qhia ntxaws ntxaws txog qhovqhov ceev thiab qhov yaj ntawm 15-7PH stainless hlau, nrog rau kev nkag siab txog seb cov khoom siv lub cev no cuam tshuam li cas rau kev tsim qauv, kev tsim khoom, thiab kev ua tau zoo hauv cov chaw muaj kev nyuaj siab.
1. Kev Taw Qhia Txog 15-7PH Stainless Steel
15-7PH(UNS S17700, tseem hu ua Hom 631) yog ib qhocov hlau tsis xeb martensitic uas ua kom nag lossis daus-hardeningtsim los muabmuaj zog, tawv, thiab tiv taus corrosionua ke nrog cov yam ntxwv zoo ntawm kev tsim khoom. Lub npe "15-7PH" los ntawm nws cov khoom sib xyaw ua ke ntawm15% chromium thiab 7% nickel, nrog rau txhuas ntxiv rau kev ua kom tawv tawv nag.
Cov hlau no dhau los ntawm kev kho cua sov tshwj xeeb uas cov tshuaj intermetallic zoo (feem ntau yog Ni₃Al) tsim nyob rau hauv lub matrix, ua rau muaj zog ntau yam tsis muaj kev txi kev tawv. Vim li no, 15-7PH yog siv dav hauv:
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Cov caij nplooj ntoos hlav aerospace thiab diaphragms
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Cov khoom siv tshuaj lom neeg
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Cov khoom siv kub siab
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Cov khoom siv hluav taws xob
Kev nkag siab txog nwscov yam ntxwv ntawm qhov ceev thiab yajyog qhov tseem ceeb rau kev xam qhov hnyav kom raug thiab tsim cov txheej txheem thermal.
2. Cov Tshuaj Lom Zem ntawm 15-7PH
| Khoom | Cov Ntsiab Lus Ib Txwm Muaj (%) | Lub Hom Phiaj |
|---|---|---|
| Chromium (Cr) | 14.0 – 16.0 | Kev tiv thaiv corrosion thiab lub zog |
| Nickel (Ni) | 6.5 – 7.8 | Kev ruaj khov thiab kev ruaj khov martensitic |
| Txhuas (Al) | 0.75 – 1.5 | Kev ua kom tawv thaum los nag |
| Cov pa roj carbon (C) | ≤ 0.09 | Kev tswj lub zog |
| Manganese (Mn) | ≤ 1.00 | Tus neeg tshem tawm cov tshuaj lom neeg |
| Silicon (Si) | ≤ 1.00 | Txhim kho kev tiv thaiv oxidation |
| Phosphorus (P) | ≤ 0.04 | Khaws cia qis rau ductility |
| Sulfur (S) | ≤ 0.03 | Kev siv tshuab tau |
| Hlau (Fe) | Qhov Nyiaj Tshuav | Lub hauv paus ntsiab lus |
Qhov kev sib xyaw ua ke no muaj kev sib npaug zoo ncaj qha cuam tshuam rau ob qho tib siqhov ceevthiabntau yam yaj, raws li nickel, chromium, thiab txhuas txhua tus muaj qhov hnyav atomic thiab thermal behaviors sib txawv.
3. Qhov ceev ntawm 15-7PH Stainless Steel
Lubqhov ceevntawm ib lub hlau txhais nws qhov hnyav ib chav tsev ntim thiab yog ib qho tseem ceeb parameter rau:
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Kev suav qhov hnyav ntawm cov khoom
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Kev tsim qauv
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Kev suav cov dej ntws thiab kev ntab
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Kev hloov pauv ntawm qhov hnyav thiab ntim hauv kev xaiv cov khoom siv
Rau cov hlau tsis xeb 15-7PH, qhovqhov ceev feem ntau yog kwv yees li:
7.80 g/cm³ (7800 kg/m³)
Tus nqi no ze rau lwm cov hlau tsis xeb martensitic thiab precipitation-hardening xws li 17-4PH (7.75 g/cm³) thiab 17-7PH (7.81 g/cm³).
3.1 Rooj Hloov Pauv Qhov Ceev
| Chav tsev | Tus nqi |
|---|---|
| g/cm³ | 7.80 |
| kg/m³ | 7800 |
| lb/in³ | 0.282 |
| lb/ft³ | 487 |
Qhov nruab nrab ntom no ua kom ntseeg tau tias 15-7PH xa tawm aqhov sib piv ntawm lub zog siab rau qhov hnyav, ua rau nws tshwj xeeb tshaj yog nyiam rau aerospace thiab cov khoom siv kho tshuab ua haujlwm siab uas txhua gram tseem ceeb.
4. Kev yaj ntawm 15-7PH Stainless Steel
Lubntau yam yajntawm ib qho alloy hais txog qhov kub thiab txias ntawm nws cov solidus (pib ntawm melting) thiab liquidus (molten tag nrho). Tsis zoo li cov hlau ntshiab, uas muaj ib qho melting point, cov alloys complex xws li stainless hlau yaj hla ib qhoqhov kub thiab txiasvim yog qhov sib txawv ntawm qhov kub melting ntawm lawv cov khoom sib xyaw.
Rau15-7PH stainless hlau, tusfeem ntau ntawm cov yajyog:
1400 – 1450 °C (2550 – 2640 °F)
Qhov ntau yam no yog sib xws nrog lwm cov hlau uas muaj chromium siab, nickel-bearing precipitation-hardening.
4.1 Cov Ntsiab Lus Txog Kev Yaj
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17-4PH:1400 – 1440 °C
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17-7PH:1400 – 1455 °C
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15-5PH:1400 – 1450 °C
Yog li, 15-7PH haum rau hauv tib qho dav dav tab sis tej zaum yuav qhia tau qhov solidus siab dua me ntsis vim yog cov nyhuv ntawm txhuas, uas ua rau qhov kub yaj nce me ntsis.
5. Cov Yam Uas Cuam Tshuam Rau Qhov Ceev thiab Qhov Ntau Yam Yaj
5.1 Cov Tshuaj Lom Zem
Cov feem pua ntawm chromium, nickel, thiab aluminium txiav txim siab seb cov atoms puas sib ze npaum li cas thiab xav tau zog ntau npaum li cas los rhuav tshem cov atomic bonds thaum lub sijhawm yaj.
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Chromiumua rau kom tawv thiab kub yaj.
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Nickeltxhim kho qhov tawv tab sis txo qhov ceev me ntsis.
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Aluminiumpab txhawb zog thiab ua rau lub melting point nce me ntsis.
5.2 Kev Kho Mob Kub
Thaum qhov ceev hloov pauv me ntsis thaum lub sijhawm kho cua sov (tsawg dua 0.1%),Kev nthuav dav thermal thiab kev hloov pauv theemtej zaum yuav cuam tshuam rau qhov ntim. Kev kho mob laus (piv txwv li, RH950 lossis TH1050) tuaj yeem ua rau muaj kev hloov pauv me me tab sis tsis cuam tshuam rau qhov ceev ntawm cov khoom.
5.3 Cov Khoom Uas Tsis Muaj Peev Xwm Thiab Kev Sib Tw
Cov khoom tsis huv me me lossis cov kev hloov pauv me me ntawm cov khoom sib xyaw tuaj yeem hloov qhov ntau ntawm kev yaj los ntawm 10–20 ° C, tab sis cov kev hloov pauv no feem ntau tsis tseem ceeb rau cov hom phiaj engineering.
6. Qhov Tseem Ceeb ntawm Qhov Ceev thiab Qhov Ntau Yam Yaj hauv Kev Tsim Qauv Engineering
6.1 Kev Xam Qhov Hnyav thiab Kev Tsim Kho
Kev paub qhov ceev tseeb ua rau cov neeg tsim qauv xam qhov hnyav ntawm cov khoom kom raug. Piv txwv li, hauv kev siv dav hlau, hloov 316L stainless hlau (qhov ceev 8.0 g/cm³) nrog 15-7PH txo qhov hnyav tag nrho thaum ua kom muaj zog dua, txhim kho kev siv roj thiab kev ua tau zoo.
6.2 Kev Ua Haujlwm Casting thiab Forging
Qhov ntau thiab tsawg ntawm cov khoom yaj yuav txiav txim siab qhov kub ntawm lub cub tawg, kev tsim pwm, thiab kev tswj kom khov. Qhov ntau thiab tsawg ntawm cov khoom yaj yuav pab txo qhov sib cais thiab qhov porosity thaum lub sijhawm casting.
Rau15-7PH, kev tswj hwm qhov zoo tshaj plaws ua kom muaj qhov sib xws ntawm cov qauv me me thiab cov khoom siv kho tshuab zoo sib xws.
6.3 Kev Vuam thiab Kev Sib Tsoo
Thaum vuam lossis koom nrog 15-7PH, kev nkag siab txog qhov ntau ntawm kev yaj yog qhov tseem ceeb kom tiv thaiv kev loj hlob ntawm cov noob ntau dhau lossis ib feem yaj hauv thaj chaw uas raug cua sov. Kev tswj hwm kom zoo yuav zam kev cuam tshuam thiab ua kom muaj kev sib koom ua ke zoo.
6.4 Kev Nthuav Dav Kub thiab Kev Tsim Kho Kub
Cov ntaub ntawv ceev thiab yaj pab kwv yees qhov hloov pauv ntawm qhov ntim thiab kev ntxhov siab thermal thaum lub sijhawm ua haujlwm. Cov kws ua haujlwm siv cov ntaub ntawv no los ua kom zoo dua qhov annealing, kev laus, lossis kev kho cov tshuaj.
7. Cov Khoom Siv Lub Cev Lus Qhia Txog 15-7PH
| Vaj tse | Tus nqi ib txwm muaj | Chav tsev |
|---|---|---|
| Qhov Ceev | 7.80 | g/cm³ |
| Ntau yam yaj | 1400–1450 | °C |
| Modulus Elastic | 200 | GPa |
| Peev Xwm Kub Tshwj Xeeb | 460 | J/kg·K |
| Kev Ua Kub | 16.7 | W/m·K |
| Tus lej ntawm kev nthuav dav | 10.9 × 10⁻⁶ | /°C |
| Kev Tiv Thaiv Hluav Taws Xob | 0.00074 | Ω·cm |
Cov yam ntxwv ntawm lub cev no ua rau 15-7PH ob qho tib siua haujlwm tau zoo thiab ruaj khov thermally, tsim nyog rau kev pabcuam los ntawm qhov kub thiab txias subzero txog li kwv yees li550 °C (1020 °F).
8. Kev sib piv nrog 17-4PH Stainless Steel
| Vaj tse | 15-7PH | 17-4PH |
|---|---|---|
| Qhov Ceev (g/cm³) | 7.80 | 7.75 |
| Ntau Yam Yaj (°C) | 1400–1450 | 1400–1440 |
| Cov Khoom Siv Kho Kom Ruaj Khoov | Aluminium | Tooj liab |
| Qhov Kub Siab Tshaj Plaws (°C) | 550 | 315 |
| Lub zog (laus lawm) | Siab heev | Siab |
| Kev Tiv Thaiv Kev Xeb | Zoo | Zoo heev |
Txawm hais tias qhov ceev yuav luag zoo ib yam, 15-7PH muajmuaj zog dua thiab ruaj khov dua thaum kub, thaum 17-4PH muab kev tiv thaiv corrosion zoo dua me ntsis thiab weldability yooj yim dua.
9. Cov Ntawv Thov Kev Lag Luam Qhov twg Qhov Ceev thiab Qhov Ntau Yam Melting Tseem Ceeb
9.1 Kev Ua Haujlwm Dav Hlau
Qhov sib piv ntawm lub zog zoo rau qhov hnyav los ntawm nws qhov ceev nruab nrab ua rau 15-7PH zoo tagnrho raucov khoom siv aerospace, bellows, thiab diaphragmsCov kws ua vaj tse tuaj yeem tsim cov khoom nyias dua thiab sib dua yam tsis muaj kev cuam tshuam rau lub peev xwm thauj khoom.
9.2 Lub Zog thiab Kev Tsim Hluav Taws Xob
Hauv cov roj turbine lossis nuclear systems, cov khoom yuav tsum tiv taus ob qho kev ntxhov siab thiab kev ua haujlwm kub siab. Cov alloy's melting range ua kom ntseeg tau tiascov npoo kev nyab xeeb thermalnyob rau hauv ib puag ncig ze li ntawm 600 ° C.
9.3 Cov Khoom Siv Tshuaj thiab Cov Txheej Txheem
Rau cov li qub, cov caij nplooj ntoos hlav, thiab cov khoom siv siab, kev sib xyaw ua ke ntawm qhov ceev, kev tiv thaiv corrosion, thiab kev ua haujlwm thermal ua rau muaj kev ua haujlwm ruaj khov nyob rau hauv cov xwm txheej cycling.
10. Piv txwv xam qhov hnyav siv qhov ceev
Ib qho piv txwv qhia tau tias cov engineers siv cov ntaub ntawv ceev npaum li cas.
Cheebtsam:Tus pas nrig ntawm 15-7PH, txoj kab uas hla 50 hli, ntev 1 m
Luas = π × (25²) × 1000 mm³ = 1.963 × 10⁶ mm³ = 1.963 × 10⁻³ m³
Qhov hnyav = 1.963 × 10⁻³ m³ × 7800 kg/m³ =15.3 kg
Qhov kev xam lej meej no yog qhov tseem ceeb heev rau kev tsim qauv dav hlau thiab tsheb, qhov twg txawm tias qhov sib txawv me me ntawm qhov hnyav kuj cuam tshuam rau qhov sib npaug thiab kev ua haujlwm zoo.
11. Cov Lus Qhia Txog Kev Ua Thermal Raws Li Qhov Ntau Yam Melting
Yuav kom tswj tau qhov ruaj khov ntawm cov khoom siv, cov neeg ua haujlwm hauv kev lag luam yuav tsum tau kho cua sov hauv qab qhov kub ntawm cov hlau nplaum.
Rau15-7PH, cov kev txwv kub hauv qab no raug pom zoo:
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Kev Kho Mob:1035–1050 °C
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Kev laus:510–565 °C
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Forging Ntau Yam:1150–900 °C
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Tsis txhob kub dhau saum toj no:1350 °C
Cov kev ntsuas no ua rau cov hlau tsis kub dhau nws qhov pib yaj (1400 ° C), ua kom muaj kev tswj hwm microstructural thiab tiv thaiv kev yaj pib.
12. Cov txiaj ntsig ntawm 15-7PH los ntawm Lub Zeem Muag Khoom Siv Lub Cev
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Qhov Ceev Sib Npaug:Muab cov khoom muaj zog yam tsis muaj qhov hnyav tsis tsim nyog.
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Ntau Yam Kev Yaj Siab:Ua rau muaj kev ruaj khov zoo heev thiab kev ua haujlwm tau ntau yam.
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Kev Ruaj Ntseg ntawm Qhov Ntev:Tsawg kawg nkaus distortion thaum lub sijhawm kho cua sov.
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Qhov Sib Piv Zog Rau Qhov Hnyav Txhim Khu Kev:Zoo tagnrho rau cov qauv thiab cov khoom txav mus los.
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Cov Khoom Siv Lub Cev Sib Xws:Tswj tau thoob plaws ntau qhov kub thiab txias.
Cov txiaj ntsig no ua rau 15-7PH nyiam rau cov engineers uas sib npaug kev ua tau zoo, qhov hnyav, thiab tus nqi.
13. Kev Tswj Xyuas Zoo thiab Kev Ntsuas ntawm SAKYSTEEL
SAKYSTEELua kom txhua pawg ntawm 15-7PH stainless hlau ua tau raws li cov qauv kev siv lub cev thiab kev kho tshuab nruj. Txhua pawg dhau los ntawm:
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Kev txheeb xyuas qhov ceev los ntawm kev tshuaj xyuas hydrostatic lossis qhov ntev
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Kev tshuaj xyuas cov qauv spectrometric
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Kev txheeb xyuas qhov melting point los ntawm kev sim cub tawg uas tswj tau
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Kev ntsuam xyuas cov khoom siv hardness thiab tensile
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Kev tshuaj xyuas ultrasonic thiab nto
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Daim ntawv pov thawj rau ASTM A693 / AMS 5520 / AMS 5659 cov qauv
(Lub logo SAKYSTEEL)
Txhua yam khoom muaj peev xwm taug qab tau tag nrho los ntawm tus lej kub thiab muab nrog daim ntawv pov thawj EN 10204 3.1 lossis 3.2 rau kev ua raws li thoob ntiaj teb.
14. Cov Ntawv Khoom thiab Cov Khoom Siv
SAKYSTEEL muab cov hlau tsis xeb 15-7PH hauv ntau hom:
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Cov Tuav thiab Cov Qws Sib Hloov:Kub-dov, forged, lossis txias-draw
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Cov Phaj & Cov Ntawv:Cov xwm txheej uas tau annealed los yog laus lawm
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Cov Hlau & Cov Kab:Rau cov caij nplooj ntoos hlav thiab diaphragms
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Kev Cais thiab Cov Nplhaib:Kev cai ua rau daim duab kos
Tag nrho cov khoom muaj nyob rau hauv tus qauv thiab kev cai loj, precision-txiav rau cov neeg siv khoom specifications, nrog kev txhawb nqa shipping thoob ntiaj teb.
15. Kev Nkag Siab Txog Kev Tsim Kho Vaj Tse
Thaum xam cov thermal loads lossis tsim cov tshuab pressurized, covqhov ceevtxhais cov pawg inertia, thaum lubntau yam yajtxhais cov kev txwv kev nyab xeeb.
Piv txwv li:
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Hauv cov cav dav hlau, qhov ceev txiav txim siab qhov sib npaug ntawm kev sib hloov.
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Hauv cov khoom sib pauv cua sov, kev paub txog qhov ntau ntawm cov khoom yaj yuav pab tiv thaiv kom tsis txhob muaj kev puas tsuaj ntawm cov qauv thaum muaj xwm txheej kub dhau.
Yog li ntawd, ob qho txiaj ntsig no tsis yog tsuas yog cov ntaub ntawv tiag tiag xwb - lawv yogcov ntsiab lus tseem ceeb ntawm kev tsim kho vaj tserau kev ua kom zoo dua.
16. Kev Sib Piv Nrog Cov Hlau Stainless Hlau Ib Txwm Muaj
| Vaj tse | 15-7PH | 304 | 316L |
|---|---|---|---|
| Qhov Ceev (g/cm³) | 7.80 | 8.00 | 8.03 |
| Ntau Yam Yaj (°C) | 1400–1450 | 1400–1455 | 1370–1400 |
| Lub Zog Tawm (MPa) | 1100+ xyoo | 205 | 290 |
| Qhov Kub Siab Tshaj Plaws (°C) | 550 | 425 | 425 |
Qhov kev sib piv no qhia tau hais tias15-7PH muab lub zog zoo kawg nkausntawm qhov ceev yuav luag zoo ib yam thiab muaj peev xwm kub dua li qib austenitic.
17. Kev Xav Txog Ib Puag Ncig thiab Kev Nyab Xeeb
Cov hlau nplaum qhov nruab nrab thiab qhov kub siab ua rau muaj kev ruaj khov thiab kev nyab xeeb:
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Qhov ceev qis dua txo qhov hnyav tag nrho, txuag hluav taws xob.
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Ntau yam kev yaj siab muab qhov dav dav ntawm kev nyab xeeb thermal.
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Cov zaj duab xis oxide ruaj khov txo qhov kev saib xyuas thiab kev hloov pauv.
Hauv kev pabcuam mus sij hawm ntev, qhov no txhais tau tiascov nqi siv tau ntev duathiabkev ntseeg siab dua.
18. Cov Qauv Kev Lag Luam Uas Tau Siv Los
15-7PH stainless hlau ua raws li:
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ASTM A693- Cov Phaj Hlau Stainless Uas Ua Rau Los Nag Thiab Khoov, Daim Ntawv, Thiab Daim Kab Xev
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AMS 5659 / AMS 5520- Cov Lus Qhia Txog Cov Khoom Siv Aerospace
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UNS S17700- Kev Siv Tus lej sib koom ua ke
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SAE 631 Lub Npe Alloy
Cov qauv no txhais nws cov kev xav tau ntawm lub cev, tshuab, thiab tshuaj lom neeg, suav nrog cov ntsuas qhov ceev thiab cov txheej txheem yaj uas siv rau hauv kev tswj xyuas zoo.
19. Cov Lus Qhia Txog Cov Ntaub Ntawv Tseem Ceeb
| Vaj tse | 15-7PH Cov Hlau Tsis Xeb |
|---|---|
| Qhov Ceev | 7.80 g/cm³ (7800 kg/m³) |
| Ntau yam yaj | 1400 – 1450 °C (2550 – 2640 °F) |
| Lub zog (laus lawm) | 1250–1450 MPa |
| Qhov Kub Siab Tshaj Plaws rau Kev Pabcuam | 550 °C |
| Qauv | Martensitic, nag lossis daus-hardened |
| Theem Hardening | Ni₃Al |
| Cov ntawv thov | Aerospace, Tshuaj lom neeg, Zog, Precision Cheebtsam |
20. Xaus Lus
Lubqhov ceev thiab qhov ntau ntawm kev yajntawm 15-7PH stainless hlau —7.80 g/cm³thiab1400–1450 °C, feem - txhais nws lub koob npe nrov ua ib qhomuaj zog heev, thermally ruaj khov alloytsim nyog rau cov lag luam uas xav tau ntau tshaj plaws.
Nws qhov hnyav sib npaug, kev kam rau cua sov dav, thiab cov qauv ruaj khov ua rau nws yog cov khoom siv ntseeg siab rau cov khoom uas raug kev ntxhov siab thiab kub siab.
At SAKYSTEEL, peb tshwj xeeb hauv kev muab cov hlau tsis xeb 15-7PH uas tau ntawv pov thawj hauv cov pas nrig, cov phaj, cov xov hlau, thiab cov ntawv tshwj xeeb, txhua yam tau kuaj thiab taug qab raws li cov qauv thoob ntiaj teb. Peb lub hom phiaj yog xa khoomzoo sib xws, kev ua haujlwm raug, thiab kev ua haujlwm txhim khu kev qharau cov neeg siv khoom thoob ntiaj teb.
Lub sijhawm tshaj tawm: Lub Kaum Hli-29-2025