Z6CND17.12 Hmoov Metallurgy Pressed Parts

Khoom Taw Qhia

Product Description

• Mechanical zog

Hardness: annealed, Tsawg dua los yog sib npaug rau 269HB; quenched thiab tempered, Ntau dua los yog sib npaug rau 55HV

• Kev kho cua sov specification thiab metallographic qauv

Kev kho cua sov specifications: 1) Annealing, qeeb txias ntawm 800-920 degree; 2) quenching, roj txias ntawm 1050-1075 degree; 3) Tempering, cua txias ntawm 100-200 degree .

Metallographic qauv: Cov qauv yog tus cwj pwm los ntawm hom martensitic.

• Cov yam ntxwv thiab thaj tsam ntawm daim ntawv thov

Qhov no stainless hlau muaj peev xwm tiv thaiv xeb zoo. Nws yog ib qho zoo stainless hlau tam sim no siv nyob rau hauv high-end batch riam lag luam. Nws lub zog thiab ntse zoo dua ATS -34.

Cov ntsiab lus chromium yog siab li 16-18 feem pua ​​. Nws yog qhov thib ob feem ntau siv stainless hlau (tom qab ATS-34), thiab nws kuj yog thawj stainless hlau txais los ntawm swordsmiths.

Thiab nws tau tseem nrov, tshwj xeeb tshaj yog txij li cov kev kho mob sub-zero tau tsim, uas ntxiv dag zog rau cov hlau lub zog.

Nws muaj qhov tsis zoo ntawm kev ua kom khov thiab ua kom sov sai sai thaum xuab zeb, tab sis nws yooj yim dua rau xuab zeb dua li cov pa roj carbon steel thiab yooj yim dua los txiav nrog tes pom.

Lub annealing kub ntawm 440C yog tsawg heev, thiab hardness tom qab quenching yog siab. Lub hardness feem ntau ncav cuag HRC56-58. Nws muaj zoo corrosion kuj (sib nqus) thiab muaj zog toughness. Nws yog tam sim no siv ntau dua nyob rau hauv xuas tes ua riam thiab zoo Hoobkas riam.

• Lub hom phiaj

Riam, turbine hniav, hniav, nozzles, li qub, board rulers, cutlery, txiab, bearings, thiab lwm yam.

Z6CND17.12 hmoov metallurgy pressed yog siv nyob rau hauv kev tsim cov stainless slices, mechanical txiav cov cuab yeej thiab shearing cuab yeej, phais hniav, siab hnav-resistant khoom qhov chaw, thiab lwm yam.

• Kev xa khoom raws li txoj cai

Feem ntau xa hauv lub xeev kho cua sov

Stainless hlau

• Stainless hlau nyhuv

Stainless hlau yuav tsis corrode, qhov, xeb, los yog hnav. Stainless hlau kuj yog ib qho ntawm cov ntaub ntawv muaj zog tshaj plaws ntawm cov khoom siv hlau architectural. Vim tias cov hlau tsis muaj steel muaj kev tiv thaiv corrosion zoo, nws tso cai rau cov qauv tsim kom muaj kev ruaj ntseg ntawm kev tsim engineering. Chromium-muaj cov hlau tsis muaj steel kuj sib xyaw ua ke txhua yam muaj zog thiab elongation siab thiab yooj yim rau txheej txheem thiab tsim khoom, uas tuaj yeem ua tau raws li cov kev xav tau ntawm cov kws tsim qauv thiab cov qauv tsim.

• Kev siv cov hlau tsis zoo

Feem ntau ntawm kev siv yuav tsum tau ua kom zoo li qub ntawm lub tsev rau lub sijhawm ntev. Thaum txiav txim siab txog hom stainless hlau yuav tsum tau xaiv, lub ntsiab kev txiav txim siab yog qhov yuav tsum tau ua kom zoo nkauj qauv, corrosiveness ntawm cov huab cua hauv zos, thiab cov txheej txheem tu yuav tsum tau saws.

Ntau ntxiv, txawm li cas los xij, lwm cov ntawv thov tsuas yog nrhiav kev ncaj ncees los yog impermeability. Piv txwv li, lub ru tsev thiab sab phab ntsa ntawm cov tsev lag luam. Hauv cov ntawv thov no, tus tswv tus nqi ntawm kev tsim kho yuav yog qhov tseem ceeb tshaj li kev zoo nkauj, thiab qhov chaw tsis huv heev.

Cov nyhuv ntawm kev siv 304 stainless hlau hauv qhov chaw qhuav hauv tsev yog qhov zoo heev. Txawm li cas los xij, txhawm rau tswj nws qhov zoo li sab nraum zoov hauv lub tebchaws thiab lub nroog, yuav tsum tau ntxhua khaub ncaws ntau zaus. Hauv cov cheeb tsam uas muaj kuab paug hnyav heev thiab cov ntug hiav txwv dej, qhov chaw yuav qias neeg heev thiab txawm xeb. Txawm li cas los xij, kom tau txais cov txiaj ntsig zoo nkauj nyob rau hauv ib puag ncig sab nraum zoov, yuav tsum muaj nickel-muaj stainless hlau. Yog li ntawd, 304 stainless hlau yog dav siv nyob rau hauv kab hlau rhuav phab ntsa, sab phab ntsa, ru tsev thiab lwm yam kev tsim kho lub hom phiaj, tab sis nyob rau hauv loj heev corrosive industries los yog marine atmospheres, nws yog qhov zoo tshaj plaws los siv 316 stainless hlau.

• Stainless hlau zawv zawg qhov rooj

Qhov zoo ntawm kev siv cov hlau tsis muaj steel hauv cov qauv siv tau raug lees paub zoo. Muaj ntau cov qauv tsim uas suav nrog 304 thiab 316 stainless hlau. Vim hais tias "duplex" stainless hlau 2205 tau ua ke zoo atmospheric corrosion kuj nrog siab tensile zog thiab elastic txwv lub zog, cov hlau no kuj muaj nyob rau hauv European qauv.

• Cov Khoom Muag

Qhov tseeb, stainless hlau yog tsim nyob rau hauv tag nrho cov qauv hlau duab thiab qhov ntau thiab tsawg, thiab muaj ntau yam tshwj xeeb cov duab. Cov khoom siv feem ntau yog ua los ntawm cov ntawv thiab sawb hlau, thiab cov khoom tshwj xeeb kuj tau tsim los ntawm cov phaj nruab nrab thiab tuab, piv txwv li, kev tsim cov hlau kub-kuav los tiag steel thiab extruded structural steel. Kuj tseem muaj cov kav dej, oval, square, rectangular, thiab hexagonal welded los yog seamless steel kav thiab lwm yam khoom, nrog rau cov profiles, tuav, xov hlau, thiab castings.

• Qhov saum npoo ntawm stainless hlau

Raws li yuav tau tham tom qab, ntau yam kev lag luam tiav tau tsim los ua kom tau raws li qhov xav tau ntawm cov kws tsim vaj tsev zoo nkauj. Piv txwv li, qhov saum npoo tuaj yeem ua kom pom tseeb lossis matte; nws tuaj yeem ua tau du, polished, lossis embossed; nws tuaj yeem ua xim, xim, electroplated, lossis etched nrog cov qauv ntawm cov hlau stainless, los yog txhuam, thiab lwm yam, kom ua tau raws li ntau yam kev xav tau ntawm cov neeg tsim qauv rau cov tsos.

Khaws qhov saum npoo yog yooj yim. Cov plua plav tuaj yeem raug tshem tawm tsuas yog qee zaus yaug. Vim yog qhov zoo corrosion kuj, graffiti contamination los yog zoo sib xws lwm yam kab mob nyob rau saum npoo tuaj yeem raug tshem tawm yooj yim.

Cov hauv qab no feem ntau yog siv los tiv thaiv intergranular corrosion:

(1) Txo cov pa roj carbon monoxide hauv cov hlau, kom cov pa roj carbon monoxide hauv cov hlau qis dua qhov saturation solubility nyob rau hauv austenite nyob rau hauv lub equilibrium lub xeev, uas yog, nws fundamentally daws qhov teeb meem ntawm nag lossis daus ntawm chromium carbide ( Cr23C6) nyob rau thaj tsam nplej. Feem ntau, cov pa roj carbon ntau hauv cov hlau tuaj yeem raug txo kom tsawg dua 0.03 feem pua ​​kom ua tau raws li qhov yuav tsum tau muaj ntawm intergranular corrosion kuj.

(2) Ntxiv Ti, Nb, thiab lwm yam khoom uas tuaj yeem tsim cov carbides ruaj khov (TiC lossis NbC) kom tsis txhob muaj nag lossis daus ntawm Cr23C6 ntawm cov ciam teb, uas tuaj yeem tiv thaiv intergranular corrosion ntawm sab sauv austenitic stainless hlau.

(3) Los ntawm kev kho qhov sib piv ntawm austenite-forming ntsiab thiab ferrite-forming ntsiab nyob rau hauv cov hlau, nws muaj ib tug austenite ntxiv rau ferrite dual-theem qauv, ntawm uas ferrite account rau 5 feem pua ​​​​rau 12 feem pua. Cov qauv duplex no tsis yooj yim rau intergranular corrosion.

(4) Cov txheej txheem kho cua sov tsim nyog tuaj yeem tiv thaiv intergranular corrosion thiab tau txais qhov zoo tshaj plaws corrosion kuj.

• Kev nyuaj siab Corrosion ntawm Austenitic Stainless hlau

Kev tawg los ntawm kev sib koom ua ke ntawm kev ntxhov siab (feem ntau tensile stress) thiab corrosion yog hu ua stress corrosion cracking, los yog SCC (Stress Crack Corrosion) luv luv. Austenitic stainless hlau yog qhov yooj yim rau kev ntxhov siab corrosion hauv corrosive media uas muaj chloride ions. Thaum cov ntsiab lus Ni nce mus txog 8 feem pua ​​​​rau 10 feem pua ​​​​, cov austenitic stainless hlau muaj qhov kev ntxhov siab ntau tshaj plaws corrosion thiab tseem ua rau cov ntsiab lus Ni nce mus txog 45 ~ 50 feem pua, thiab kev ntxhov siab corrosion maj mam txo kom txog thaum nws ploj mus.

Txoj hauv kev tseem ceeb tshaj plaws los tiv thaiv kev ntxhov siab ntawm austenitic stainless hlau yog ntxiv Si2 ~ 4 feem pua ​​thiab tswj N cov ntsiab lus hauv qab no 0.04 feem pua ​​​​hauv smelting. Tsis tas li ntawd, cov ntsiab lus ntawm impurities xws li P, Sb, Bi, thiab raws li yuav tsum tau txo kom ntau li ntau tau. Tsis tas li ntawd, AF dual-theem steel tuaj yeem xaiv tau, uas tsis cuam tshuam rau kev ntxhov siab corrosion hauv Cl- thiab OH-nruab nrab. Thaum cov kab nrib pleb zoo tau ntsib cov theem ferrite thiab tsis txuas ntxiv mus ntxiv, cov ntsiab lus ferrite yuav tsum nyob ib ncig ntawm 6 feem pua.

• Deformation ntxiv dag zog ntawm austenitic stainless hlau

Ib-theem austenitic stainless hlau muaj cov khoom txias deformation zoo, thiab tuaj yeem ua kom txias rau hauv cov hlau nyias nyias thiab txias dov rau hauv cov hlau nyias nyias lossis cov kav hlau. Tom qab ib tug loj npaum li cas ntawm deformation, lub zog ntawm cov hlau yog zoo heev, tshwj xeeb tshaj yog thaum nws yog dov nyob rau hauv lub sub-zero kub cheeb tsam, cov nyhuv tseem ceeb dua. Lub zog tensile tuaj yeem ncav cuag ntau dua 2000 MPa. Qhov no yog vim qhov deformation-induced M transformation yog superimposed ntxiv rau qhov txias ua hauj lwm hardening nyhuv.

Austenitic stainless steel can be used to make stainless springs, clock springs, and wire ropes in aviation structures after deformation strengthening. If welding is required after deformation, only the spot welding process can be used, and the deformation increases the tendency of stress corrosion. And due to the partial γ->M transformation, ferromagnetism yuav tsum tau txiav txim siab thaum siv nws (xws li hauv cov khoom siv ntsuas).

Lub recrystallization kub hloov nrog tus nqi deformation. Thaum lub deformation tus nqi yog 60 feem pua, qhov recrystallization kub poob mus rau 650 degree. Lub recrystallization annealing kub ntawm txias deformed austenitic stainless hlau yog 850 ~ 1050 degree. Ntawm 850 degree, nws yuav tsum tau khaws cia rau 3 teev.

• Kev kho cua sov ntawm austenitic stainless hlau

Feem ntau siv cov txheej txheem kho cua sov rau austenitic stainless hlau suav nrog kev kho tshuaj, kev kho kom ruaj khov, thiab kho kev ntxhov siab.

(1) Kev daws teeb meem. Lub hom phiaj tseem ceeb ntawm cua sov cov hlau mus rau 1050 ~ 1150 degree thiab dej quenching yog kom yaj cov carbides nyob rau hauv lub austenite thiab ua kom lub xeev no nyob rau hauv chav tsev kub kom lub corrosion kuj ntawm cov hlau yuav zoo heev. Raws li tau hais los saum no, txhawm rau tiv thaiv kev cuam tshuam ntawm intergranular, kev kho tshuaj feem ntau yog siv los yaj Cr23C6 hauv austenite, thiab tom qab ntawd txias sai. Cov cua txias tuaj yeem siv rau cov phab ntsa nyias nyias, thiab dej txias feem ntau yog siv.

(2) Kev kho kom ruaj khov. Feem ntau, nws yog ua tiav tom qab kev kho cov tshuaj, uas feem ntau yog siv rau 18-8 steel uas muaj Ti thiab Nb. Tom qab kev kho mob, cov hlau yog rhuab mus rau 850 ~ 880 degree thiab ces cua txias. Lub sijhawm no, cov carbides ntawm Cr tau yaj tag, thiab cov carbides ntawm titanium tsis yaj tag, thiab lawv tau sib cais tag nrho thaum lub caij txias, yog li ntawd nws tsis yooj yim sua kom carbon los tsim chromium carbides, yog li tshem tawm cov kev cuam tshuam intergranular. .

(3) Kev kho kev ntxhov siab. Kev kho kev ntxhov siab yog kev kho cua sov kom tshem tawm cov kev ntxhov siab ntawm cov hlau tom qab ua haujlwm txias lossis vuam. Feem ntau, nws yog rhuab mus rau 300 ~ 350 degree rau tempering. Rau cov hlau tsis muaj stabilizing cov ntsiab lus Ti thiab Nb, cov cua kub yuav tsum tsis pub tshaj 450 degree kom tsis txhob nag lossis daus ntawm chromium carbides thiab ua rau intergranular corrosion. Rau ultra-low carbon thiab txias-ua hauj lwm qhov chaw thiab welded qhov chaw ntawm stainless hlau uas muaj Ti thiab Nb, nws yuav tsum tau rhuab ntawm 500 ~ 950 degree, thiab ces maj mam txias kom tshem tawm kev ntxhov siab (lub siab txwv kub rau tshem tawm vuam kev nyuaj siab), uas tuaj yeem txo qhov nyiam ntawm intergranular corrosion thiab txhim kho kev ntxhov siab corrosion ntawm steel.

• Austenitic-ferritic duplex stainless hlau

Raws li lub hauv paus ntawm austenitic stainless hlau, tsim nyog nce cov ntsiab lus Cr thiab txo cov ntsiab lus Ni, thiab koom tes nrog kev kho kom rov zoo kom tau cov hlau tsis muaj steel nrog ob theem qauv ntawm austenite thiab ferrite (muaj 40~ 60 feem pua ​​δ-ferrite). Cov qib steel hom yog 0Cr21Ni5Ti, 1Cr21Ni5Ti, OCr21Ni6Mo2Ti, thiab lwm yam. Duplex stainless hlau muaj weldability zoo, tsis muaj kev kho cua sov yuav tsum tau tom qab vuam, thiab nws intergranular corrosion thiab kev nyuaj siab corrosion tendencies kuj me me. Txawm li cas los xij, vim yog cov ntsiab lus siab ntawm Cr, nws yooj yim rau kev tsim σ theem, yog li kev saib xyuas yuav tsum tau them thaum siv nws.

• Ferritic stainless hlau

Nws sab hauv microstructure yog ferrite, thiab nws qhov loj feem ntawm chromium yog nyob rau hauv thaj tsam ntawm 11.5 feem pua ​​~ 32.0 feem pua. Nrog rau qhov nce ntawm chromium cov ntsiab lus, nws cov kua qaub kuj tseem txhim kho. Tom qab ntxiv molybdenum (Mo), nws tuaj yeem txhim kho lub peev xwm ntawm acid corrosion kuj thiab kev ntxhov siab corrosion kuj. Lub teb chaws tus qauv qib ntawm hom stainless hlau no yog 00Cr12, 1Cr17, 00Cr17Mo, 00Cr30Mo2, thiab lwm yam.

• Martensitic stainless hlau

Nws microstructure yog martensite. Qhov loj feem ntawm chromium nyob rau hauv hom hlau no yog 11.5 feem pua ​​~ 18. Kev nce hauv cov ntsiab lus carbon nce lub zog thiab hardness ntawm hlau. Ib qho me me ntawm npib tsib xee ntxiv rau hom hlau no tuaj yeem txhawb kev tsim ntawm martensite thiab tib lub sijhawm txhim kho nws cov corrosion kuj. Hom hlau no tsis zoo weldability. Cov hlau phaj suav nrog hauv cov qib txheem hauv tebchaws suav nrog 1Cr13, 2 Cr13, 3 Cr13, 1 Cr17Ni2, thiab lwm yam.

• Austenitic stainless hlau

Nws microstructure yog austenitic. Nws yog tsim los ntawm kev ntxiv cov npib tsib xee (cov feem ntau ntawm cov npib tsib xee yog 8 feem pua ​​~ 25 feem pua) rau high-chromium stainless hlau, thiab nws yog stainless hlau nrog ib tug austenitic qauv. Austenitic stainless hlau yog raws li Cr18Ni19 hlau-raws li alloy, ntawm lub hauv paus no, nrog rau kev siv sib txawv, nws tau tsim los rau hauv cov koob ntawm chromium-nickel austenitic stainless hlau qhia hauv daim duab 1-2.

Austenitic stainless hlau feem ntau belongs rau corrosion-resistant steel thiab yog cov feem ntau siv hom hlau. Ntawm lawv, 18-8 stainless hlau yog tus sawv cev tshaj plaws. Nws muaj cov khoom siv kho tshuab zoo thiab yooj yim rau machining, stamping, thiab vuam. Nws muaj kev tiv thaiv corrosion zoo heev thiab kub ua haujlwm zoo hauv ib puag ncig oxidizing. Txawm li cas los xij, nws yog qhov tshwj xeeb tshaj yog rau cov nruab nrab uas muaj cov tshuaj chloride ions (CL-) hauv cov tshuaj thiab nws yooj yim rau kev ntxhov siab corrosion. 18-8 stainless hlau muab faib ua peb qib raws li cov ntsiab lus carbon hauv nws cov tshuaj muaj pes tsawg leeg: cov ntsiab lus carbon dav dav (Wc Tsawg dua lossis sib npaug rau 0.15 feem pua ​​) qib carbon qis

(Wc Tsawg dua lossis sib npaug rau {{0}}}.08 feem pua ​​) thiab qib carbon qis (Wc Tsawg dua lossis sib npaug rau 0.03 feem pua ​​). Piv txwv li, 1Cr18Ni9Ti, 0Cr18Ni9, thiab 00Cr17Ni14M02 steel daim hlau nyob rau hauv kuv lub teb chaws cov qauv yog nyob rau saum toj no peb qib. Ntau lub teb chaws hauv ntiaj teb xav tias qhov tsis txaus ntawm nickel reserves. Yuav kom txuag tau npib tsib xee, thaum ntxov li xyoo 1940 thiab 1950, lub ntiaj teb pib hloov ib feem ntawm cov nickel hauv 18-8 stainless hlau nrog manganese thiab nitrogen. Cov qib ntawm cov hlau phaj tsim thiab suav nrog cov qauv hauv tebchaws suav nrog 1Cr17Mn6Ni5N thiab 0Cr19Ni9N.

• Austenitic-ferritic stainless hlau

Nws microstructure yog austenite ntxiv rau ferrite. Stainless hlau nrog ib feem ntawm ferrite tsawg dua 10 feem pua ​​yog qib steel tsim los ntawm austenitic steel.

• nag lossis daus hardening stainless hlau

Raws li nws cov txheej txheem microstructure, nws tuaj yeem muab faib ua peb pawg: nag lossis daus-hardening semi-austenitic stainless hlau, nag lossis daus-hardening martensitic stainless hlau, thiab nag lossis daus-hardening austenitic stainless hlau. Muaj 0Cr17Ni7A, 0Cr17Ni4Cu4Nb, thiab 0Cr15Ni7M02Al teev nyob rau hauv kuv lub teb chaws tus qauv steel phaj qib, uas yog los nag lossis daus hardening semi-austenitic stainless hlau. Lub microstructure ntawm cov hlau yog tus yam ntxwv los ntawm austenite ntxiv rau ferrite nrog ib feem ntawm 5 feem pua ​​​​rau 20 feem pua ​​​​hauv cov khoom siv los yog lub xeev annealed. Tom qab kev kho cua sov los yog kev kho tshuab deformation, lub austenite hloov mus rau hauv martensite thiab tom qab ntawd mus txog qhov yuav tsum tau muaj zog los ntawm kev laus nag lossis daus hardening. Cov hlau no muaj qhov zoo formability thiab zoo weldability thiab yuav siv tau raws li ib tug ultra-high-lub zog cov ntaub ntawv nyob rau hauv lub nuclear kev lag luam, aviation, thiab aerospace industries.

• Lub neej yav tom ntej ntawm stainless hlau

Vim tias cov hlau tsis muaj steel twb muaj ntau yam khoom zoo tshaj plaws uas yuav tsum tau ua los ntawm cov khoom siv hauv tsev, nws tuaj yeem hais tau tias nws yog ib qho tshwj xeeb ntawm cov hlau, thiab nws txoj kev loj hlob mus ntxiv. Cov hom uas twb muaj lawm tau raug txhim kho tas li los ua kom cov hlau tsis muaj steel ua tau zoo dua hauv cov ntawv thov ib txwm muaj, thiab cov hlau tsis huv tshiab tau tsim los ua kom tau raws li cov kev cai nruj ntawm cov ntawv thov kev tsim vaj tsev siab heev. Vim muaj kev ua tau zoo ntau lawm thiab kev txhim kho zoo, stainless hlau tau dhau los ua ib qho ntawm cov khoom siv zoo tshaj plaws ntawm kev xaiv rau cov kws tsim qauv. Stainless hlau sib txuas ua haujlwm, zoo li, thiab siv cov yam ntxwv, yog li stainless hlau yuav nyob twj ywm ib qho ntawm cov khoom siv zoo tshaj plaws hauv ntiaj teb.

Hlau Txhaj Moulding txheej txheem

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