Dab tsi yog Precipitation Hardening Stainless Steel?

Cov hlau tsis xeb uas ua kom tawv thaum nag los, tseem hu ua PH stainless steel, yog ib pawg tshwj xeeb ntawm cov hlau tsis xeb uas ua tiav lub zog siab los ntawm cov txheej txheem kho cua sov tshwj xeeb hu ua precipitation hardening. Cov txheej txheem no txhim kho cov khoom siv kho tshuab yam tsis muaj kev cuam tshuam rau kev tiv thaiv xeb, ua rau PH stainless steels yog qhov kev xaiv nyiam hauv cov lag luam xav tau xws li aerospace, petrochemical, marine, thiab kev tiv thaiv.

Cov hlau tsis xeb no muab cov kev tiv thaiv xeb ntawm cov qib austenitic stainless nrog lub zog thiab qhov nyuaj uas tuaj yeem tshaj ntau cov hlau carbon muaj zog siab. Qhov tshwm sim yog cov hlau sib xyaw ua ke uas muaj kev ruaj khov, kev ua tau zoo, thiab lub neej ntev hauv cov chaw ua haujlwm hnyav.

Lub Ntsiab Cai Tseem Ceeb ntawm Kev Ua Kom Nag Los Ua Kom Ruaj Khov

Kev ua kom tawv tawv yog kev kho cua sov hlau uas ua rau lub zog ntawm cov khoom siv malleable, suav nrog cov hlau tsis xeb, txhuas, thiab cov hlau nickel-based. Hauv PH stainless steels, cov txheej txheem no suav nrog peb kauj ruam tseem ceeb:

  1. Kev Kho Mob Tshuaj- Cov hlau sib xyaw ua ke raug cua sov rau qhov kub siab kom yaj cov khoom sib xyaw ua ke rau hauv cov tshuaj khov.

  2. Kev tua hluav taws- Kev txias sai sai xauv cov khoom sib xyaw rau hauv qhov chaw, tiv thaiv cov theem tsis xav tau los ntawm kev tsim.

  3. Kev Laus (Nag Los)- Kev tswj hwm rov ua kom sov tso cai rau cov khoom me me, hu ua precipitates, los tsim nyob rau hauv lub microstructure, cuam tshuam kev txav mus los thiab ua kom muaj zog ntxiv.

Cov dej nag me me ua rau muaj kev cuam tshuam rau kev txav mus los, uas ua rau lub zog thiab lub zog tensile ntawm cov khoom siv zoo dua thaum tseem tswj nws cov khoom tiv taus corrosion.

Cov Hom Phiaj Nag Los Ua Kom Cov Hlau Stainless Hardening

Muaj ntau hom PH stainless hlau, txhua hom muaj nws cov khoom sib xyaw, cov khoom siv kho tshuab, thiab cov ntawv thov. Feem ntau suav nrog:

  • 17-4PH (UNS S17400)– Muaj kwv yees li 17% chromium thiab 4% nickel nrog rau ntxiv tooj liab. Muaj lub zog siab, tawv zoo, thiab tiv taus xeb zoo heev hauv ob qho tib si tawv thiab laus.

  • 15-5PH (UNS S15500)- Zoo ib yam li 17-4PH tab sis muaj zog dua thiab txhim kho cov khoom siv kho tshuab transverse.

  • 17-7PH (UNS S17700)- Paub txog nws qhov kev ua tau zoo hauv qhov xwm txheej annealed thiab lub zog siab tom qab nag lossis daus hardening.

  • 13-8Mo (UNS S13800)- Muaj qhov zoo tshaj plaws toughness, corrosion tsis kam, thiab siab zog, feem ntau siv rau hauv aerospace thiab nuclear industries.

Cov Khoom Tseem Ceeb ntawm PH Stainless Steels

  1. Muaj Zog Siab- Muaj peev xwm ua tiav lub zog tensile tshaj 1000 MPa tom qab kev kho cua sov.

  2. Kev Tiv Thaiv Kev Kub Ntxhov Zoo heev- Piv rau 304 lossis 316 stainless hlau hauv ntau qhov chaw ib puag ncig.

  3. Kev Ruaj Ntseg Zoo- Tswj kev cuam tshuam txawm tias nyob rau theem siab hardness.

  4. Kev Ruaj Ntseg ntawm Qhov Ntev- Tsawg kawg nkaus distortion thaum lub sij hawm hardening, ua rau nws haum rau precision Cheebtsam.

  5. Kev Tiv Thaiv Hnav- Haum rau cov ntawv thov uas muaj kev sib txhuam thiab kev puas tsuaj.

Cov Txheej Txheem Kho Mob Kub Hauv Kev Nthuav Dav

Cov txheej txheem kho cua sov rau PH stainless hlau tuaj yeem tsim kho kom ua tiav cov qib zog thiab kev tawv tshwj xeeb.

  1. Kev Kho Mob Kub Hnyiab- Ua kom sov txog 1020–1060 ° C kom yaj cov khoom sib xyaw ua ke rau hauv cov khoom khov kho.

  2. Txias Sai (Quenching)- Feem ntau yog cua los yog roj tua kom cov tshuaj khov.

  3. Kev Laus (Nag Los)– Rov ua kom sov mus rau qhov kub ntawm 480–620°C rau lub sijhawm teev tseg, uas yuav ua rau cov av qeeg xws li cov sib xyaw tooj liab lossis cov theem sib xyaw ua ke.

Los ntawm kev kho qhov kub thiab lub sijhawm laus, cov engineers tuaj yeem kho cov khoom siv kho tshuab kom zoo. Piv txwv li, kev laus ntawm qhov kub qis dua feem ntau ua rau muaj qhov nyuaj tshaj plaws, thaum qhov kub laus siab dua tuaj yeem ua rau muaj kev tawv ntxiv.

Cov ntawv thov ntawm Precipitation Hardening Stainless Steel

PH stainless hlau siv dav thoob plaws ntau qhov chaw vim lawv cov khoom sib npaug.

  • Kev Lag Luam Aerospace- Cov khoom siv hauv tsev, cov khoom siv tsaws, thiab cov khoom siv cav uas xav tau qhov sib piv ntawm lub zog thiab qhov hnyav.

  • Kev Lag Luam Marine- Cov kiv cua, cov khoom siv txuas, thiab lwm yam khoom uas raug dej hiav txwv.

  • Roj thiab roj av- Cov khoom siv valve, cov twj tso kua mis, thiab cov cuab yeej downhole uas yuav tsum tiv taus qhov siab thiab qhov chaw corrosive.

  • Kev Ua Tshuaj Lom Zem- Cov hlab reactor, cov mixers, thiab cov khoom siv uas xav tau kev tiv taus cov tshuaj corrosive.

  • Kev Tiv Thaiv thiab Phom- Cov thoob phom, cov blocks breech, thiab lwm yam khoom muaj kev ntxhov siab siab.

  • Cov Khoom Siv Kho Mob- Cov cuab yeej phais, cov cuab yeej orthopedic, thiab cov khoom cog uas xav tau ob qho tib si lub zog thiab biocompatibility.

Cov txiaj ntsig ntawm kev siv PH Stainless Steels

  1. Lub zog sib piv rau cov hlau Alloy- PH stainless hlau feem ntau phim lossis tshaj lub zog ntawm cov hlau alloy, tab sis nrog kev tiv thaiv corrosion zoo dua.

  2. Txo Cov Nqi Kho- Kev tiv thaiv xeb zoo heev txo qhov xav tau cov txheej tiv thaiv lossis hloov pauv ntau zaus.

  3. Kev daws teeb meem sib dua- Lub zog siab ua rau txo qhov tuab ntawm qhov hla, txo qhov hnyav yam tsis muaj kev cuam tshuam rau kev ua tau zoo.

  4. Kev Muaj Peev Xwm Ntau Yam Hauv Kev Tsim Khoom- Muaj peev xwm ua tau machined nyob rau hauv lub annealed mob thiab tom qab ntawd hardened tom qab.

  5. Kev Pabcuam Ntev- Khaws cov khoom kom ruaj khov rau lub sijhawm ntev, txawm tias nyob rau hauv qhov chaw nyuaj.

Cov Kev Txwv thiab Kev Xav Txog

Txawm hais tias lawv muaj qhov zoo, PH stainless hlau kuj muaj cov kev txwv:

  • Tus nqi- Feem ntau kim dua li cov hlau tsis xeb.

  • Kev Txwv Kub- Lub zog tuaj yeem poob qis ntawm qhov kub thiab txias siab tshaj 300 ° C.

  • Kev vuam tau- Qee qib yuav xav tau kev kho cua sov tom qab vuam kom rov qab kho cov khoom siv kho tshuab.

Kev Sib Piv Nrog Austenitic Thiab Martensitic Stainless Steels

Vaj tse Cov Hlau Stainless Austenitic (piv txwv li, 304) Cov Hlau Stainless Martensitic (piv txwv li, 410) PH Cov Hlau Tsis Xeb (piv txwv li, 17-4PH)
Lub zog Nruab nrab Siab Siab heev
Kev Tiv Thaiv Kev Xeb Zoo heev Nruab nrab Zoo heev
Kev Kho Mob Kub Tsis muaj kev kho kom tawv los ntawm kev kho cua sov Ua kom tawv tau Hardenable los ntawm precipitation
Kev tawv ncauj Zoo heev Nruab nrab Zoo mus rau Zoo heev

Qhov kev sib piv no qhia tau hais tias PH stainless hlau muaj kev sib xyaw ua ke ntawm cov yam ntxwv uas txuas qhov sib txawv ntawm qib austenitic thiab martensitic.

Cov Qauv thiab Cov Lus Qhia Tshwj Xeeb

PH stainless hlau yog tsim tawm raws li ntau yam qauv thoob ntiaj teb, suav nrog:

  • ASTM A564- Cov qauv txheem rau cov hlau tsis xeb uas kub thiab txias uas tau ua tiav lawm thiab cov duab.

  • AMS 5643- Tus qauv dav hlau rau 17-4PH.

  • EN 10088- Cov qauv European rau cov hlau tsis xeb.

Cov qauv no ua kom muaj qhov zoo sib xws, tshuaj lom neeg, thiab cov khoom siv kho tshuab, ua rau PH stainless hlau txhim khu kev qha rau cov ntawv thov tseem ceeb.

Kev Txij Nkawm thiab Kev Saib Xyuas

Yuav kom tswj tau qhov ua tau zoo ntawm PH stainless hlau:

  • Kev Ntxuav Tsis Tu Ncua- Tshem tawm cov kuab paug xws li ntsev, tshuaj lom neeg, thiab av qias neeg.

  • Tsis txhob raug cua sov ntev ntev- Tiv thaiv kev laus dhau thiab kev puas tsuaj ntawm cov khoom.

  • Kev Tshuaj Xyuas Tsis Tu Ncua- Tshwj xeeb tshaj yog nyob rau hauv marine thiab tshuaj lom neeg ib puag ncig.

Kev saib xyuas kom zoo yuav ua kom cov khoom tseem khaws cia lawv cov khoom tsim tau thoob plaws lub neej ua haujlwm.

Yav Tom Ntej ntawm Cov Hlau Stainless Hardening Uas Muaj Nag Los

Raws li kev lag luam xav tau lub zog siab dua, kev tiv thaiv xeb zoo dua, thiab qhov hnyav qis dua, PH stainless hlau yuav txuas ntxiv mus. Kev tsim kho tshiab hauv kev tsim alloy thiab cov txheej txheem kho cua sov ua rau muaj kev ua tau zoo dua hauv cov xwm txheej nyuaj dua. Cov chaw tsim khoom zoo lisakysteeltab tom nthuav lawv lub peev xwm tsim khoom kom tau raws li qhov xav tau thoob ntiaj teb rau cov khoom siv hlau tsis xeb PH zoo.

Nrog kev nce qib hauv kev tsim khoom ntxiv thiab kev ua haujlwm kom raug, PH stainless hlau kuj tseem pom cov ntawv thov hauv kev cai, cov khoom ua tau zoo uas yav dhau los nyuaj rau tsim.

Xaus lus

Cov hlau tsis xeb uas ua kom tawv thaum los nag yog ib pawg khoom siv tseem ceeb rau cov ntawv thov uas xav tau kev sib xyaw ua ke ntawm lub zog, kev tiv thaiv xeb, thiab kev ruaj khov ntawm qhov ntev. Los ntawm kev tswj hwm cov txheej txheem kho cua sov kom zoo, cov hlau no tuaj yeem ua tiav cov yam ntxwv kev ua tau zoo uas ua tau raws li qhov xav tau ntawm cov lag luam xws li aerospace, marine, roj thiab roj av, thiab kev tiv thaiv.

Txij li 17-4PH mus rau cov qauv siab heev xws li 13-8Mo, cov hlau no muab cov engineers ib qho kev daws teeb meem txhim khu kev qha thiab ntau yam rau cov khoom tseem ceeb. Nrog kev tshawb fawb thiab kev txhim kho kev tsim khoom los ntawm cov tuam txhab zoo lisakysteel, PH stainless hlau yuav tseem yog qhov kev xaiv tseem ceeb rau kev siv engineering ua haujlwm siab rau yav tom ntej.

Lub sijhawm tshaj tawm: Lub Yim Hli-15-2025