Thaum cov neeg feem coob hnov 'cov hmoov metallurgy ua ntej', lawv tam sim ntawd xav txog high-tech aerospace qhov chaw los yog tej zaum cov intricate kho mob implants. Qhov ntawd tsis yog lawm, tab sis nws yog me ntsis ntawm glossy daim ntawv qhia. Qhov kev muaj tiag, kev sib tsoo txhua hnub ntawm nws, yog ntau ntxiv txog kev daws teeb meem tangible heev: yuav ua li cas koj tau txais cov iav nyuaj los tuav nws cov duab los ntawm sintering yam tsis muaj warping, los yog koj ua li cas tsis tu ncua ntaus qhov ceev ntawm 7.4 g / cm3 ntawm kev tsim khoom ntawm 50,000 daim? Qhov 'advanced' tsis yog cov khoom siv hmoov xwb; nws yog tag nrho cov saw ntawm kev xav, los ntawm cov hmoov tuav mus rau qhov kawg sizing ua haujlwm. Ntau lub khw thov muaj peev xwm ntawm no, tab sis dab ntxwg nyoog yog nyob rau hauv cov ntsiab lus feem ntau spec ntawv tsis txawm hais.
Lub Foundation: Nws pib thiab nres nrog hmoov
Txhua leej txhua tus obsesses tshaj qhov nias thiab sintering, tab sis yog tias koj cov hmoov feedstock tsis yog, koj nyob nraum tsev ntawm xuab zeb. Kuv twb pom tej yaam num poob vim cov roj atomized stainless hlau hmoov muaj ib tug me ntsis tawm particle loj tis. Cov dej ntws mus rau hauv qhov tuag tsis sib xws, ua rau qhov ntom ntom ntom ntom uas tsuas yog tshwm sim raws li cov kab nrib pleb tom qab kev kho cua sov. Koj kho tsis tau tom qab. Kev xaiv ntawm dej atomized thiab roj atomized tsis yog hais txog tus nqi xwb; nws yog hais txog qhov kawg ntawm lub neej qaug zog. Rau qhov kev sib txuas ntawm lub tsheb loj uas peb tau ua haujlwm, cov pa roj carbon atomized hmoov lub kheej kheej thiab cov ntsiab lus ntawm cov pa oxygen qis dua tsis tuaj yeem sib tham, txawm tias tus nqi 30%. Qhov ntawd yog qhov twg advanced hmoov metallurgy pib tiag tiag - ntawm qib raw khoom, nrog kev nkag siab tob txog yuav ua li cas hmoov morphology dictates txhua yam downstream.
Tom qab ntawd muaj qhov sib tov. Nws suab yooj yim: sib tov lub hauv paus hlau hmoov nrog cov graphite, lubricant, thiab tej zaum ib co tooj liab. Tab sis kev ua tiav ib homogeneous sib xyaw uas tsis sib cais thaum thauj mus rau xovxwm yog ib daim duab me me. Peb ib zaug muaj ib pawg ntawm qhov chaw uas qhov chaw hardness zoo meej, tab sis cov tub ntxhais yog mos. Siv peb lub lis piam los taug qab nws rov qab mus rau lub roj nplua nyeem thaum lub sij hawm ncua me ntsis. Cov txheej txheem 'advanced' tau tso tseg los ntawm cov khoom siv yooj yim tuav qhov teeb meem. Nws yog ib qho kev ceeb toom txo qis tias qhov thev naus laus zis no zaum ntawm kev sib tshuam ntawm chemistry, physics, thiab kev ua haujlwm zoo heev.
Qhov no granular tsom rau cov khoom noj khoom haus yog vim li cas kev koom tes nrog cov neeg muag khoom ntseeg siab yog qhov tseem ceeb. Nws tsis yog hais txog kev yuav hmoov; nws yog hais txog kev muaj kev sib tham ntawm ntau-rau-ntau sib xws. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog rau nws cov xyoo caum hauv precision casting thiab machining, nkag siab qhov no intrinsically. Thaum lawv cov tub ntxhais kawm ntawm https://www.tsingtaocnc.com qhia txog lub plhaub pwm casting thiab CNC machining, qhov kev koom tes ntev nrog cov ntaub ntawv tshawb fawb-tshwj xeeb tshaj yog cov alloys tshwj xeeb xws li npib tsib xee-raws li cov-txhais rau hauv lub hauv paus kev hwm rau cov khoom siv uas muaj txiaj ntsig ncaj qha rau txhua qhov foray rau hauv hmoov metallurgy tivthaiv ntau lawm lossis ua tiav.
Qhov Nias Qhov Teeb Meem ntawm Tooling thiab Green Strength
Tooling tsim rau PM yog lub ntiaj teb ntawm nws tus kheej. Nws tsis yog kab noj xwb; Nws yog ib qho system rau hmoov faib, compaction, thiab ejection. Cov kaum sab xis yog qhov tsawg, cov phab ntsa thickness variations yog qhov nyuaj, thiab cov undercuts feem ntau yog tsis mus tshwj tsis yog tias koj tab tom ua hlau txhaj tshuaj molding (ib tug npawg ntawm PM). Peb tsim ib lub cuab yeej rau lub sprocket nrog me ntsis helical hniav daim ntawv. Ntawm daim ntawv, nws zoo. Hauv kev xyaum, qhov tsis sib xws ntawm kev sib txhuam thaum lub sij hawm ejection ua rau cov feeb laminations nyob rau hauv ntsuab. Lawv pom tsis tau txog thaum sintering, thaum lawv qhib zoo li me me txhaum. Peb yuav tsum rov qab mus, kho cov cuab yeej saum npoo tiav thiab cov txheej txheem ejection - me me tweaks uas raug nqi ob lub lis piam hauv kev sim khiav.
Lub zog ntsuab - lub zog ntawm cov hmoov sib tov ua ntej sintering - yog lwm qhov tseem ceeb tab sis feem ntau saib tsis taus. Nws txiav txim siab yog tias koj qhov chaw tuaj yeem muaj sia nyob raug tuav, de-powdered, thiab muab tso rau ntawm lub tais sintering. Tsawg dhau, thiab nws crumbles; siab dhau lawm, thiab tej zaum koj yuav over-compacting, uas coj nws cov teeb meem. Kuv nco qab tus neeg siv khoom los ntawm cov cuab yeej hluav taws xob kev lag luam uas xav tau cov vaj tsev nyob hauv qhov nyuaj, nyias nyias. Peb ua tiav qhov geometry, tab sis qhov ntsuab yog qhov tsis yooj yim heev nws xav tau kev cai neeg hlau tuav. Ib feem yog kev vam meej, tab sis kev lag luam kev lag luam tau dhau los ua nyuaj. Qhov ntawd yog qhov kev sib pauv tsis tu ncua hauv advanced hmoov metallurgy: thawb geometrical txwv thaum tswj kev tsim khoom robustness.
Qhov no yog qhov kev sib koom ua ke nrog kev ua haujlwm tom qab sinter ua qhov tseem ceeb. Feem ntau, cov txheej txheem PM tau txais koj 95% nyob rau ntawd, tab sis tseem ceeb heev kam rau ua los yog nta xws li threaded qhov yuav tsum tau machining. Muaj kev paub txog kev ua haujlwm hauv tsev, zoo li QSY lub peev xwm CNC siab, yog qhov zoo heev. Koj tsis yog ua ib feem ntawm PM; koj yog engineering txoj kev tsim khoom. Tus kws kho tshuab yuav tsum nkag siab txog cov khoom siv sintered tus qauv - nws yog qhov ntxeem tau, uas cuam tshuam rau cov cuab yeej hnav thiab txiav quab yuam txawv dua li cov khoom siv wrought. Qhov kev paub kaw-loop los ntawm sintering mus rau qhov kawg machining tiv thaiv ntau tus ntiv tes taw thiab ua tsis tiav.
Sintering: Qhov twg Khawv koob thiab yuam kev tshwm sim
Sintering yog lub plawv ntawm cov txheej txheem. Nws yog kev seev cev thermal nrog lub sijhawm, qhov kub thiab txias. Ib tug txheej txheem mesh siv rauv yog zoo rau ntau qhov chaw, tab sis thaum koj nkag mus rau hauv advanced hmoov metallurgy nrog cov alloys ua haujlwm siab, koj feem ntau saib lub tshuab nqus tsev sintering lossis cov cua kub siab. Lub hom phiaj yog los tsim metallurgical bonds ntawm hmoov hais yam tsis melting tag nrho cov khoom. Nws yog qhov sib npaug me me.
Kev tswj huab cua yog txhua yam. Ib qho dej me me hauv lub qhov cub hluav taws xob hydrogen-nitrogen tuaj yeem ua rau cov pa oxygen, ua rau oxidation ntawm qhov chaw uas ua rau puas. Peb ib zaug sintered ib pawg ntawm npib tsib xee-raws li alloy qhov chaw rau corrosive ib puag ncig daim ntawv thov. Cov kev ntsuas ceev thiab hardness yog zoo meej tom qab sinter. Tab sis thaum lub sij hawm tus neeg siv ntsev-txhaj tshuaj ntsuam, lawv ua tsis tiav ntxov. Tus neeg ua txhaum? Ib qho tsis tshua pom cov pa roj carbon depletion txheej ntawm qhov chaw, ob peb microns tuab, tshwm sim los ntawm huab cua tsis txaus thaum lub sijhawm kub kub. Cov cav tov rauv pom me ntsis poob rau hauv cov roj siab uas peb tau tso tseg raws li lub suab nrov. Nws yog ib zaj lus qhia kim heev hauv cov ntaub ntawv ceev faj.
Qhov ntsuas cua txias yog lwm lub zog. Rau qee cov qib steel, koj tuaj yeem kho qhov cua txias ntawm lub cub tawg kom ua tiav qhov tshwj xeeb microstructure, ua tau zoo ua kev kho cua sov hauv kab. Qhov kev sib koom ua ke no yog ib lub cim ntawm cov txheej txheem siab heev. Nws tshem tawm kev ua haujlwm thib ob tab sis yuav tsum muaj kev tswj hwm zoo. Nws ua rau kuv nco txog qhov tseeb xav tau hauv kev nqis peev casting txheej txheem rau turbine hniav, qhov twg thermal tswj txhais cov qauv nplej. Cov tuam txhab uas muaj kev tswj xyuas kev ruaj ntseg, zoo li cov neeg muaj kev paub txog kev nqis peev casting (qhov kev pabcuam tseem ceeb rau QSY), muaj cov txheej txheem thermal intuition uas ncaj qha hloov mus rau kev paub txog qhov sintering nkhaus.
Post-Processing: Ua-lossis-Txiav tiav
Ntau tus xav tias qhov ua tiav tom qab sintering. deb ntawm nws. Sintered feem ntau xav tau sizing (qhov kawg rov nias), chav kho, roj impregnation, lossis ntau txheej txheej. Kev kho chav dej, piv txwv li, tsim cov hlau nplaum (Fe3O4) txheej uas txhim kho hardness thiab corrosion kuj rau cov hlau-raws li qhov chaw. Tab sis yog tias qhov kub thiab txias los yog lub sij hawm tawm, koj tau txais cov oxide tsis ncaj ncees lawm, thiab qhov rusts tsis muaj kev tiv thaiv. Nws yog ib qho kev ua tiav uas xav tau kev hwm ntau npaum li qhov kev tshwm sim tseem ceeb.
Roj impregnation yog ib yam rau tus kheej-lubricating bearings. Lub tswv yim yog los sau cov kev sib tshuam porosity nrog roj. Nws suab ncaj nraim, tab sis ua tiav tag nrho, cov impregnation nyob rau hauv ib lub siab-ntim batch yog qhov nyuaj. Peb tau siv lub tshuab nqus tsev impregnation, tab sis txawm li ntawd los, ib feem kev taw qhia hauv pob tawb tseem ceeb. Ib feem nrog lub qhov muag tsis pom kev yuav ntxiab huab cua, tsim kom muaj qhov chaw qhuav uas ua rau muaj kev ua haujlwm ntxov ntxov. Kev daws qhov no tsis yog hais txog kev siv tshuab zoo nkauj; nws yog hais txog kev xav fixture tsim thiab txheej txheem validation.
Qhov kev saib xyuas kom tiav yog qhov cais ib feem uas ua haujlwm ntawm ib feem uas kav ntev. Nws yog tib lub tswv yim uas koj pom nyob rau hauv siab ncaj ncees casting thiab machining kev ua haujlwm. Tus nqi kawg tsis yog nyob ze-net zoo li; nws yog nyob rau hauv lub guaranteed kev ua tau zoo. Thaum cov chaw tsim khoom xws li QSY teev lawv cov haujlwm nrog cobalt thiab npib tsib xee-raws li alloys rau kev thov, nws txhais tau hais tias muaj peev xwm ua tiav tsis yog tsuas yog tsim tab sis ua tiav cov khoom kom muaj sia nyob hauv ntiaj teb tiag tiag-txawm tias nws los ntawm cov pwm pwm lossis PM compaction tuag.
Lub Ntiaj Teb Lub Ntiaj Teb Fit thiab Economic Kev Muaj tiag
Yog li thaum twg advanced hmoov metallurgy ua siab ntev? Nws yeej tsis yog tib txoj kev xaiv. Koj ib txwm ntsuas nws tawm tsam machining ntawm bar Tshuag, peev casting, los yog forging. Qhov chaw qab zib yog qhov nyuaj, cov khoom ntim siab uas siv cov khoom siv tseem ceeb. Xav txog cov iav helical rau kev sib kis: machining nws los ntawm steel bar pov tseg ntau tshaj 60% ntawm cov khoom siv chips. PM tej zaum yuav muaj 95% cov khoom tawm los. Thaum koj ua ntau pua txhiab tus, cov ntaub ntawv khaws cia them rau cov cuab yeej sai heev.
Tab sis nws tsis yog rau txhua yam. Tsawg ntim? Tus nqi cuab yeej tua nws. Qhov loj heev? Xovxwm tonnage thiab lub cub tawg loj dhau los ua txwv. Cov khoom uas xav tau huab cua, isotropic ductility? Wrought cov ntaub ntawv tseem yeej. Qhov tseem ceeb yog kev ntsuam xyuas ncaj ncees. Kuv tau tham cov neeg siv khoom siv PM thaum lawv cov qauv ntim ntawm 500 daim tsis ua pov thawj rau $ 80k tooling, steering lawv hloov mus rau machining lossis txawm binder jetting rau prototyping. Lub hom phiaj yog siv cov cuab yeej tsim nyog rau txoj haujlwm.
Saib rau pem hauv ntej, kev sib koom ua ke ntawm cov thev naus laus zis yog qhov txiaj ntsig tom ntej. Ua ke PM preforms nrog me ntsis kev lag luam CNC machining, lossis siv PM los tsim cov khoom sib xyaw tshwj xeeb (xws li tooj liab-infiltrated steel rau siab conductivity thiab lub zog) uas tsis tuaj yeem ua los ntawm lwm txoj kev. Nws yog nyob rau hauv cov hybrid mus kom ze uas sib sib zog nqus manufacturing kev ntawm ib tug ruaj yuav invaluable. Lub peev xwm los saib ib feem ntawm kev kos duab thiab tsis yog tsuas yog pom PM ib feem xwb, tab sis pom txoj hauv kev uas yuav cuam tshuam PM rau lub cev, lub tshuab ua haujlwm rau cov xov tseem ceeb, thiab cov txheej tshwj xeeb rau kev hnav tsis kam - qhov no yog qhov kev ua tiav ntawm cov hmoov metallurgy siab heev. Nws nres ua tus txheej txheem ib leeg thiab dhau los ua daim npav muaj zog hauv lub lawj dav ntawm kev tsim cov kev daws teeb meem.
