Thaum ib tug neeg hais tias 'stainless steel', feem ntau cov neeg tam sim ntawd pom cov khoom ci, tsis xeb hauv lawv chav ua noj. Nyob rau hauv lub foundry thiab machining ntiaj teb no, uas yog yuav luag ib txwm ib Austenitic stainless hlau, feem ntau yog qib 304 lossis 316. Tab sis ntawm no yog thawj qhov kev poob siab: xav tias txhua tus austenitics raug tsim sib npaug rau txoj haujlwm. Kuv tau pom ntau cov duab kos tsuas yog qhia tsis tau thiab cia peb twv, uas ua rau muaj kev sib tham, lossis phem dua, hu rov qab. Cov ntsiab lus siab nickel thiab chromium muab nws qhov kev tiv thaiv corrosion thiab ua rau nws tsis yog-magnetic, tseeb, tab sis machinability? Qhov ntawd yog ib zaj dab neeg txawv. Nws yog gummy, nws ua hauj lwm-hardens zoo li vwm yog tias koj tsis ceev faj nrog koj cov feeds thiab speeds, thiab qhov zoo nkauj nto tiav txhua leej txhua tus xav xav kom ib tug zoo meej txheej txheem, tsis yog ib tug ntse cuab tam.
Lub Foundry Floor Reality: Casting Austenitic Qib
Casting nws yog ib daim duab kos duab hauv nws tus kheej. Ntawm peb lub khw, peb cuam tshuam nrog ntau qhov peev txheej thiab plhaub pwm casting rau cov khoom siv. Pouring austenitic alloy zoo li CF8M (qhov sib npaug ntawm 316) tsis zoo li nchuav carbon hlau. Lub fluidity yog txawv, lub shrinkage yog ntau pronounced, thiab koj yuav tsum tau ceev faj incredibly txog inclusions. Peb tau kawm qhov no nyuaj heev thaum ntxov nrog ib pawg ntawm lub cev valve rau cov neeg siv khoom hauv hiav txwv. Cov specs hu rau kev siab ncaj ncees, tab sis peb muaj ob peb chav ua tsis tau qhov ntsuas dej. Tom qab muab faib, peb pom micro-shrinkage porosity uas tsis pom ntawm qhov chaw radiography. Qhov teeb meem? Nws tsis yog cov ntaub ntawv pov thawj-lawv tau zoo-nws yog peb qhov rooj vag thiab tsim tsim rau qhov tshwj xeeb geometry. Peb tau siv tus qauv uas ua haujlwm zoo nkauj rau carbon steel tab sis choked txoj kev pub rau austenitic tus yam ntxwv solidification.
Qhov ntawd yog qhov nrog Austenitic stainless hlau hauv casting: koj tsis tuaj yeem luam tawm cov txheej txheem los ntawm lwm tsev neeg cov ntaub ntawv. Cov ntsiab lus siab alloy hloov txhua yam hais txog yuav ua li cas cov hlau ntws thiab txias. Peb yuav tsum rov qab mus, simulate lub solidification dua nrog cov thermal tsis raug rau cov qib tshwj xeeb, thiab rov tsim kho cov txheej txheem pub mis. Ntxiv ob peb ntxiv risers nyob rau hauv cov lus dag. daws qhov teeb meem, tab sis nws raug nqi peb lub sij hawm thiab ob peb zoo ingots ntawm cov khoom. Nws drilled rau hauv pab neeg uas stainless nyob rau hauv ib tug kos duab yuav tsum tau los nrog ib tug tshwj xeeb qib, thiab txawm li ntawd los, peb cov txheej txheem engineering yuav tsum tau tailored.
Qhov no yog qhov uas qhov kev paub ntev ntev hauv qhov chaw tseem ceeb. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog ntau tshaj peb xyoo caum nyob rau hauv casting thiab machining, tau inevitably tsim ib lub tsev qiv ntawv sib sib zog nqus ntawm cov kev hloov maj mam, qib cov txheej txheem tshwj xeeb. Nws tsis yog ib yam uas koj pom hauv phau ntawv; nws yog nyob rau hauv cov cav los ntawm cov hauj lwm yav dhau los, cov ntawv sau los ntawm cov neeg ua hauj lwm lub tshuab hluav taws xob, cov kev hloov me ntsis cov qauv tsim paub ua. Thaum lawv hais tias lawv tshwj xeeb hauv cov ntaub ntawv suav nrog stainless hlau thiab cov alloys tshwj xeeb, qhov kev tshwj xeeb tsis yog hais txog qhov muaj qhov cub-nws yog hais txog kev muaj cov khoom tsim, feem ntau nyuaj-yeej paub txog yuav ua li cas kom tau txais lub suab nrov ntawm cov kua hlau kom tiav cov duab yam tsis muaj qhov tsis xws luag.
Machining: Qhov Kev Xav Tau Raws Li Chip
Yog tias casting nws yog kev kos duab, machining nws yog kev qhuab qhia kev kawm uas muaj ntau chav rau kev ua yuam kev. Kev ua hauj lwm-hardening nyiam ntawm austenitic steels yog legendary. Koj tuaj yeem ua qhov kev txiav zoo meej, tab sis yog tias koj lub cuab yeej lingers lossis rubs, koj nyuam qhuav tsim qhov chaw nyuaj dua li koj lub cuab yeej txiav ntug, lav qhov kev puas tsuaj tag thiab cov chipped ntxig rau tom ntej dhau los. Kuv nco qab teeb tsa txoj haujlwm CNC rau 316L flange ntawm lub tshuab tshiab. Tus programmer siv cov ntsuas los ntawm qhov zoo sib xws ntawm cov pa roj carbon steel. Thawj qhov zoo li tsis zoo, tab sis los ntawm qhov thib peb, qhov saum npoo yog tearing, thiab lub cuab yeej tau qw. Peb yuav tsum nres, rov ntsuas txhua yam.
Qhov tseem ceeb yog tswj cov cua sov thiab tswj kom zoo ib yam, zoo nti khiav tawm. Coolant tsis yog ua kom txias ntawm no xwb; nws yog rau lubricity thiab ntxuav tam sim ntawd stringy, tawv nti ua ntej nws tau qhwv ib ncig ntawm lub workpiece los yog lub cuab tam. Peb hloov mus rau qhov hnyav dua, ntse geometry ntxig nrog lub siab tawv stainless hlau txheej, txo qhov nrawm me ntsis, thiab nce cov khoom noj kom tau raws li cov txheej txheem ua haujlwm hnyav los ntawm kev txiav yav dhau los. Hmo ntuj thiab hnub sib txawv. Cov chips tig los ntawm xiav, tangled noog ' zes mus rau ib qho zoo, zoo ib yam nyiaj curl. Qhov saum npoo tiav mus los ntawm ragged Ra 3.2 mus rau huv Ra 1.6.
Qhov no yog qhov ua tau zoo, kev sib koom tes ntawm tes uas txhais tau tias muaj peev xwm machining tiag tiag. Yog vim li cas ib lub khw thov ntawm CNC machining kev txawj ntse yuav tsum yog cov khoom tshwj xeeb. Txhua tus neeg tuaj yeem khiav ceev ceev. Khiav 316 lossis 304 ua haujlwm tau zoo, nrog kev ua siab ntev thiab kev ncaj ncees ntawm qhov chaw, tshwj xeeb tshaj yog ntawm cov phab ntsa nyias nyias uas koj tsis tuaj yeem clamp nyuaj rau kev ntshai ntawm kev cuam tshuam, qhov ntawd yog qhov ntsuas. Nws xav tau cov kws tshaj lij uas nkag siab txog cov khoom siv tus cwj pwm, tsis yog G-code xwb.
Alloy Nuances: Tsis yog 304 yog 304 xwb
Lwm txheej yog qhov hloov maj mam hloov pauv hauv tsev neeg austenitic. Siv 304 rau 304L. Lub 'L' qhia txog cov pa roj carbon tsawg, tshwj xeeb rau kev sib ntaus sib tua-kev tsim cov chromium carbides ntawm cov ciam teb thaum lub sij hawm vuam los yog kub-kub raug, uas depletes hauv zos chromium thiab tua corrosion kuj. Rau ib feem uas yuav welded tom qab machining, qhia 304 es tsis txhob 304L yog ib qho yuam kev. Kuv twb pom lawm. Ib tus neeg siv khoom tau muab lawv cov ntaub ntawv pov thawj rau 304 bar Tshuag rau kev sib dhos welded. Peb machined nws, lawv welded nws, thiab rau lub hlis tom qab, lawv muaj cov kab nrib pleb zoo nyob rau hauv ib cheeb tsam uas muaj corrosive. Cov khoom yog rau spec, tab sis tsis ncaj ncees lawm spec rau daim ntawv thov.
Tom qab ntawd muaj cov austenitics tshwj xeeb, zoo li qib high-molybdenum (316, 317) rau chloride ib puag ncig, lossis cov qib ruaj khov zoo li 321 nrog titanium. Txhua lub tshuab txawv me ntsis. 321, piv txwv li, muaj cov titanium inclusions uas tuaj yeem abrasive ntawm cov cuab yeej. Koj yuav tsum account rau qhov ntawd. Thaum lub tuam txhab cov ntaub ntawv teev npe suav nrog tshwj xeeb alloys zoo li cov nickel-based, nws feem ntau txhais tau tias lawv yuav tsum tau mus rau cov nuances no. Cov kev xav thiab cov tswv yim cuab yeej pib sib tshooj. Kev mloog rau cov ntsiab lus xav tau rau Inconel tau txais txiaj ntsig ncaj qha rau kev ua haujlwm ntawm austenitic stainless hlau.
Qhov no tau txais mus rau qhov tseem ceeb ntawm kev xaiv cov khoom txhawb nqa. Ib tus khub tsim khoom zoo tsis yog tsuas yog xaj khoom xwb; lawv yuav tsum tuaj yeem pom cov ntawv thov tsis sib haum no. Yog tias ib daim duab kos rau lub twj tso kua mis dej hiav txwv hu rau 304, yuav tsum muaj tus chij tsa, kev sib tham pib. Tej zaum 316 yog xav tau, los yog tej zaum ib tug duplex stainless kom zoo zog. Cov txheej txheem kev sab laj no yog yug los ntawm pom tej yam ua tsis tiav thiab ua tiav hauv thaj chaw.
Los ntawm Raw Casting mus rau Qhov Kawg: Qhov Kev Sib Tw Sib Koom
Qhov kev sim tiag tiag los thaum koj tuav tag nrho cov nqi saw, zoo li lub plhaub pwm casting uas tom qab ntawd xav tau CNC machining meej ntawm lub ntsej muag tseem ceeb thiab bores. Raws li-cam khwb cia saum npoo ntawm austenitic steel muaj ib qho nyuaj, oxidized nplai thiab decarburized txheej. Koj thawj zaug machining pass yuav tsum sib sib zog nqus txaus kom tau nyob rau hauv tag nrho cov ntawd, ntxuav, suab hlau. Yog tias koj qhov casting muaj qhov sib txawv me ntsis, koj qhov kev pab cuam CNC xav tau nyiaj pab rau qhov ntawd. Peb tau koom ua ke kev soj ntsuam niaj hnub ntawm peb cov tshuab kom pom cov khoom lag luam tiag tiag ntawm lub ntsej muag datum ua ntej lub voj voog tag nrho pib. Nws ntxiv ib feeb rau lub sij hawm voj voog tab sis txuag ib feem ntawm kev muab pov tseg vim tias qhov txiav yog ntiav dhau ntawm qhov chaw qis.
Qhov kev sib koom ua ke no yog ib qho txiaj ntsig tseem ceeb. Ntawm qhov chaw zoo li QSY, qhov twg cov txheej txheem ntawm plhaub molding, peev casting, thiab CNC machining nyob rau hauv ib lub ru tsev, lub tswv yim voj luv luv. Pab pawg machining tuaj yeem qhia rau lub chaw tsim khoom yog tias lawv tab tom nrhiav ib qho chaw nyuaj hauv qee qhov chaw ntawm qhov casting, uas yuav taw tes rau qhov teeb meem chilling hauv pwm. Lub foundry tuaj yeem kho cov txheej txheem casting los muab qhov zoo sib xws, machinable pib taw tes. Qhov kev sib koom ua ke no yog qhov tseem ceeb rau cov ntaub ntawv uas nyuaj rau ob daim ntawv thiab txiav.
Nws kuj tso cai rau kom muaj txiaj ntsig zoo ntawm qhov ze-net-shape casting. Rau ib qho austenitic stainless, koj xav kom txo tus nqi ntawm cov khoom kim heev uas koj yuav tsum tig mus rau hauv cov chips. Los ntawm casting los ze zog mus rau qhov kawg cov duab thiab tsuas yog machining qhov tseem ceeb interfaces, koj txuag loj npaum li cas ntawm cov khoom nqi thiab lub sij hawm tshuab. Tab sis qhov no yuav tsum muaj kev sib koom tes zoo kawg nkaus ntawm kev tsim cov qauv casting thiab kev teeb tsa ntawm machining fixtures. Nws yog qhov kev ua si qib siab ntawm kev tsim khoom ua tau zoo uas tsuas yog ua tau nrog kev sib sib zog nqus, hla txheej txheem kev txawj ntse.
Xaus Kev xav: hwm cov khoom
Yog li, dab tsi yog qhov khoom plig tom qab xyoo ua haujlwm nrog nws? Austenitic stainless hlau yog ib tsev neeg zoo kawg nkaus ntawm cov ntaub ntawv, tab sis nws xav tau kev hwm. Nws tsis yog ib qho kev hloov pauv rau cov hlau me me. Nws txoj kev vam meej hauv daim ntawv thov hinges ntawm peb yam: xaiv cov qib zoo rau qhov chaw pabcuam, siv cov txheej txheem tsim (xws li casting) haum rau nws tus cwj pwm tshwj xeeb, thiab ua tiav lub tswv yim machining uas lees paub nws cov cuab yeej txiav tshwj xeeb. Tau txais ib qho ntawm qhov tsis ncaj ncees lawm, thiab qhov zoo tshaj plaws corrosion kuj thiab toughness koj them rau tej zaum yuav tsis raug pom nyob rau hauv qhov kawg.
Cov tuam txhab uas muag tas li xa cov khoom zoo austenitic stainless tsis yog cov neeg txiav txim xwb. Lawv yog cov kev daws teeb meem nrog kev nkag siab zoo ntawm metallurgy thiab txheej txheem kev sib cuam tshuam. Lawv nug cov lus nug txog kev siv qhov kawg, lawv muaj cov ntaub ntawv keeb kwm kom tsis txhob muaj kev cuam tshuam yav dhau los, thiab lawv muaj peev xwm hauv tsev los kho ntau theem ntawm kev tsim khoom hauv kev hais kwv txhiaj. Qhov ntawd yog lub ntsiab lus tiag tiag ntawm kev tshwj xeeb hauv daim teb no - nws tsawg dua ntawm cov khoom siv thiab ntau ntxiv txog cov kev txawj ntse uas tau sau tseg rau txhua txoj haujlwm uas los ntawm lub qhov rooj.
Thaum kawg, nws los rau kev kho cov khoom siv raws li tus khub nrog nws tus kheej, tsis yog cov khoom lag luam kom zoo li qub. Thaum koj ua li ntawd, koj qhib nws lub peev xwm tag nrho, thiab qhov ntawd yog qhov sib cais ntawm kev ua haujlwm ntawm ib qho kev ntseeg siab, ntev ntev. Qhov ntawd yog lub hom phiaj, txawm li cas los xij. Peb tseem tab tom kawm txog kev ua kom yuam kev tshiab txhua zaus uas nyuaj rau luam tawm ntawm lub rooj.
