Kev Tshawb Fawb Txog Kev Tshawb Fawb Ntawm 17-4PH Stainless Hlau

Taw qhia rau 17-4PH Stainless Hlau

 

17-4PH yog cov nag lossis daus classic- hardening stainless hlau uas tau tuav txoj haujlwm irreplaceable nyob rau hauv aerospace, petrochemical, tub rog, thiab precision manufacturing industries txij li thaum nws taw qhia vim nws superior comprehensive zog. Lub "PH" hauv nws lub npe sawv cev rau " nag lossis daus hardening," nthuav tawm nws cov yam ntxwv tseem ceeb ntawm kev ua tiav lub zog siab thiab tawv los ntawm kev kho cua sov yooj yim. Hauv qab no, peb yuav muab qhov kev ntsuam xyuas qhov tob ntawm lub hnub qub alloy los ntawm ntau qhov kev xav.

 

Core Chemical Cheebtsam

Lub Pob Zeb ntawm Lub Zog thiab Corrosion Resistance

 

Cov tshuaj muaj pes tsawg leeg ntawm 17-4PH yog lub hauv paus ntawm nws cov kev ua tau zoo tshaj. Nws muaj pes tsawg leeg yog tsim intricately, nrog rau txhua lub caij ua lub luag haujlwm txawv:

 

• Chromium:Feem ntau ntawm 15.00% thiab 17.50%. Qhov no yog lub hauv paus tseem ceeb uas muab cov khoom "stainless" ntawm cov hlau tsis muaj steel, tsim cov xim chromium oxide passivation zaj duab xis rau ntawm cov hlau nplaum, yog li muab kev tiv thaiv corrosion zoo heev, tshwj xeeb tshaj yog nyob rau hauv huab cua, dej, thiab ntau yam acidic thiab alkaline xov xwm.
• Nickel:Kwv yees li 3.00% txog 5.00%. Nickel lub luag haujlwm tseem ceeb yog txhawm rau txhim kho cov qauv austenitic, yog li txhim kho cov khoom toughness, ductility, thiab weldability.
• Tooj:Ntawm 3.00% thiab 5.00%. Tooj liab yog qhov tseem ceeb tshaj plaws rau nag lossis daus hardening hauv 17-4PH. Thaum lub sij hawm tshwj xeeb kev kho cua sov, tooj liab precipitates raws li zoo heev tooj liab-nplua nuj hais dispersed nyob rau hauv lub martensitic matrix, zoo cuam tshuam dislocation txav thiab ua rau ib tug tseem ceeb ntxiv zog.
• Niobium / Tantalum:0.15% mus rau 0.45%. Niobium tsim cov carbonitrides ruaj khov (xws li NbC) nrog carbon thiab nitrogen. Cov tebchaw no tsis yog tsuas yog ua kom cov nplej zom tau zoo xwb tab sis kuj tseem cuam tshuam kev loj hlob ntawm cov qoob loo thaum kho cua sov thiab pab txhawb rau nag lossis daus.
• Carbon thiab manganese:Cov ntsiab lus carbon yog nruj me ntsis tswj nyob rau theem qis (tsawg dua lossis sib npaug li 0.07%) kom txo qis kev tsim cov teeb meem chromium carbide thiab tsis txhob cuam tshuam kev cuam tshuam ntawm intergranular. Manganese ua raws li deoxidiser thiab stabilizer ntawm austenite.

 

Qhov no ingenious ua ke ntawm chromium thiab npib tsib xee, nrog rau qhov sib ntxiv ntawm tooj liab thiab niobium, tso cai rau 17-4PH kom muaj kev tiv thaiv corrosion ntawm stainless hlau thaum ua tiav cov cuab yeej cuab tam piv rau high-strength alloy steel los ntawm kev kho cua sov.

 

Cov khoom tseem ceeb mechanical

 

Kev kos duab ntawm kev sib npaug zog thiab toughness

 

Qhov kev ua tau zoo ntawm 17-4PH yog ze ze rau nws lub xeev kho cua sov, nrog rau H900 kev laus lub xeev yog feem ntau. Nws mechanical zog yog impressive:

 

• Tensile zog:Hauv lub xeev H900, 17-4PH nthuav tawm lub zog tensile siab heev, feem ntau tshaj 1310 MPa (190 ksi). Qhov no yog tus nqi siab heev, txhais tau tias cov khoom tuaj yeem tiv taus qhov siab tshaj plaws tensile quab yuam ua ntej tawg, ua rau nws tsim nyog rau cov khoom siv thauj khoom loj.
• Yield zog:Lub zog tawm los yog qhov tseem ceeb ntawm kev ntxhov siab uas cov khoom siv pib ua rau cov yas deformation tseem ceeb, tseem ceeb heev rau kev tsim engineering. Nyob rau hauv lub xeev H900, 17-4PH kuj boasts zoo heev yield zog, feem ntau tsis qis dua 1170 MPa (170 ksi). High yield zog txhais tau hais tias qhov chaw tsis tshua muaj kev deformation mus tas li thaum lub sijhawm ua haujlwm, ua rau muaj kev ruaj ntseg zoo heev.

 

Nws yog ib qho tseem ceeb uas yuav tsum tau hais txog tias los ntawm kev hloov pauv qhov kub thiab lub sijhawm, 17-4PH tuaj yeem ua tiav ntau qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm lub zog-tawv tawv (xws li, H1150 lub xeev muaj zog dua tab sis qis zog me ntsis), muab cov neeg siv cov kev xaiv hloov tau.

 

Lub cev thiab hardness zog

 

• Ceev:Qhov ceev ntawm 17-4PH yog kwv yees li 7.8 g / cm³. Qhov no yog ze rau ntawm feem ntau austenitic stainless hlau (xws li 304), tab sis qis dua siab - lub zog cov cuab yeej steels los yog npib tsib xee-raws li alloys, ua tau zoo heev "lub zog tshwj xeeb" (lub zog rau qhov sib piv), uas yog qhov tseem ceeb rau kev siv aerospace uas yuav tsum tau txo qhov hnyav.

 

• Hardness:Hardness ncaj qha qhia txog cov khoom tiv thaiv rau hauv zos indentation lossis khawb. Thaum lub zog siab tshaj plaws hauv lub xeev H900, 17-4PH tuaj yeem ua tiav qhov hardness ntawm HRC 40 lossis siab dua (feem ntau ntawm HRC 42-48). Qhov kev ua haujlwm siab no ua kom zoo heev hnav tsis kam thiab ua haujlwm tsis zoo, ua rau nws tsim nyog rau kev tsim cov khoom txav xws li iav, ncej, thiab bearings.

 

Cov qauv siv tseem ceeb

Kev ruaj ntseg zoo

 

Txhawm rau ua kom cov khoom zoo thiab sib xws, kev tsim khoom thiab tshuaj xyuas ntawm 17-4PH yuav tsum ua raws li cov qauv thoob ntiaj teb thiab lub teb chaws. Cov qauv uas muaj xws li:

 

American Standards (ASTM / AMS / UNS):

ASTM A564: Qhov no yog tus qauv tshwj xeeb rau kub- dov thiab txias- nag lossis daus tiav- ua kom cov hlau tsis muaj steel tuav thiab cov ntaub ntawv, qhia txog cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab lwm yam yuav tsum tau ua rau 17-4PH.

AMS 5604: Aerospace cov ntaub ntawv specification, nrog rau cov kev cai nruj dua rau aerospace -qib 17-4PH steel tuav.

UNS S17400: Qhov no yog tus cim tshwj xeeb rau 17-4PH alloy hauv Uniform Numbering System.

Suav Standards (GB):

GB / T 1220: Tus qauv rau "Stainless Steel Bars" qhia txog qib sib xws li 0Cr17Ni4Cu4Nb, nthuav dav nws cov kev qhia tshwj xeeb.

Lwm Cov Qauv: Cov qauv European (xws li EN 10088-3) kuj suav nrog cov ntaub ntawv zoo sib xws, feem ntau nrog qib 1.4542.

 

Cov qauv no ua kom ntseeg tau tias, tsis hais cov khoom siv los ntawm qhov twg, tsuav yog lawv ua tau raws li cov qauv tsim nyog, lawv cov khoom sib xyaw thiab cov khoom muaj kev ntseeg tau zoo thiab zoo ib yam.

 

17-4PH Applications

 

1. Aerospace Kev Lag Luam: Vim nws lub zog siab, zoo corrosion kuj, thiab qaug zog tsis kam, 17-4PH round steel yog dav siv nyob rau hauv kev lag luam aerospace los tsim high- lub zog thiab corrosion-resistant Cheebtsam xws li aircraft qhov chaw, cav Cheebtsam, thiab tsaws iav.

 

2. Kev lag luam tshuaj lom neeg thiab roj av: 17-4PH round steel yog dav siv hauv kev lag luam tshuaj thiab roj av los tsim cov kav dej tiv thaiv corrosion, li qub, twj, thiab ntim khoom. Qhov no yog vim nws muaj peev xwm tiv taus ntau yam corrosive media, xws li acids, alkalis, thiab ntsev, thaum tseem ua tau raws li qhov yuav tsum tau muaj zog.

 

3. Marine Engineering: 17-4PH round steel exhibits zoo seawater corrosion kuj thiab kev nyuaj siab corrosion cracking kuj nyob rau hauv marine ib puag ncig, thiab yog li ntawd feem ntau siv los tsim marine engineering khoom xws li offshore platforms, marine khoom, thiab marine cov cuab yeej.

 

4. Cov Khoom Siv Kho Mob: Vim nws zoo biocompatibility, siab zog, thiab corrosion kuj, 17-4PH round steel yog dav siv nyob rau hauv kev tsim cov khoom siv kho mob, xws li cov pob qij txha, cov hniav cog hniav, thiab cov cuab yeej phais.

 

5. Lwm qhov chaw: Ntxiv nrog rau cov ntawv thov saum toj no, 17-4PH round steel kuj tseem siv los tsim cov khoom siv kho tshuab, bearings, springs, automotive qhov chaw thiab lwm yam khoom uas yuav tsum tau muaj zog thiab corrosion kuj.