Yog tias koj tau nyob ib puag ncig kev tsim khoom ntev txaus, koj tau hnov lub suab rau Hlau Txhaj Moulding (MIM). Nws yog feem ntau muag raws li cov txheej txheem tej yam yees siv no uas tuaj yeem ua rau txhua qhov nyuaj, me me hlau nrog qhov yooj yim ntawm cov yas molding. Nov yog thawj qhov chaw uas tib neeg tau tripped. Nws tsis yog khawv koob, thiab nws yeej tsis yog rau ib feem. Qhov kev muaj tiag yog gritty, nthuav dav-obsessed seev cev ntawm cov hmoov hlau metallurgy thiab yas txhaj tshuaj molding cov qauv, nrog ntau chav rau tej yam mus rau sab yog tias koj tsis hwm tus txheej txheem ciam teb. Kuv tau pom ntau txoj haujlwm dhia dej vim yog lub suab nkauj ntawm kev nyuaj thiab ntim, tsuas yog kom tau poob rau ntawm ntug dej ntawm sintering distortion lossis feedstock inconsistencies.
Lub hauv paus ntawm MIM: Nws yog txhua yam hais txog Feedstock thiab Binder
Cia peb pib qhov twg cov txheej txheem pib: cov khoom noj. Qhov no tsis yog hlau hmoov tov nrog yas. Nws yog ib homogeneous sib tov ntawm zoo heev, kheej kheej hlau hmoov-xav tias 20 microns los yog tsawg dua-thiab ib tug ntau-component binder system. Lub binder yog cov kua nplaum ib ntus. Tau txais qhov kev sib xyaw no yog 80% ntawm kev sib ntaus sib tua. Yog tias cov hmoov tsis zoo tag nrho, koj tau txais cov gradients ntom ntom. Hauv sintering, qhov ntawd yuav warp zoo li qos yaj ywm chips. Kuv nco qab txog qhov project rau kev phais txiav txiav qhov chaw uas peb tau tawm tsam rau lub lis piam nrog cov khoom siv hlau tshiab. Cov hmoov ntau muaj qhov sib txawv me ntsis particle loj faib. Nws zoo nkaus li zoo nyob rau hauv daim ntawv ntsuam xyuas, tab sis cov molded qhov chaw muaj ib tug weird, greasy nto hnov. Sintered, lawv tau nkig. Tus neeg ua txhaum? Ib qho kev hloov hauv thaj tsam ntawm cov hmoov hloov pauv li cas nws ntub cov ntaub ntawv, ua rau kev sib cais ntawm cov ntaub ntawv thaum lub sij hawm molding. Kev hloov pauv me me, qhov ua tsis tiav loj.
Tom qab ntawd muaj molding nws tus kheej. Koj tab tom txhaj cov khoom noj granulated no rau hauv lub cuab yeej uas yuav raug nqi $ 50k txog $ 100k. Nws zoo nkaus li thiab zoo li yas txhaj tshuaj molding, tab sis qhov tsis sib txawv. Lub yaj viscosity siab dua, thiab koj tab tom cuam tshuam nrog cov khoom siv abrasive. Cov cuab yeej hnav yog qhov tiag, tus nqi tas li. Koj tsis tuaj yeem teeb lub tshuab thiab tsis nco qab nws. Peb khiav cov txheej txheem kev kawm muaj peev xwm (Cpk) ntawm txhua qhov tseem ceeb ntawm qhov kev txhaj tshuaj thawj zaug. Txawm li cas los xij, lub tshuab rhaub cua sov tsis ua haujlwm ntawm lub thoob, qhov ntsuas kub hloov pauv, thiab tam sim ntawd koj qhov kev txhaj tshuaj siab tawm, ua rau me me voids. Cov voids no yuav tsis tshwm sim txog thaum tom qab sintering, raws li qhov chaw nto.
Cov kauj ruam debinding yog qhov chaw txhaj tshuaj molding qhov xaus thiab qhov hlau pib. Qhov no yog ib qho qeeb, ceev faj tshuaj lossis cov txheej txheem thermal kom tshem tawm cov ntaub ntawv tseem ceeb. Rush nws, thiab koj tau tawg los yog hlwv. Nws yog ib kauj ruam ntau cov neeg tuaj tshiab underestimate, xav tias nws tsuas yog lub cub tawg. Nws yog zoo li ib tug tswj decomposition. Tom qab ntawd, koj nyob nraum sab laug nrog ib qho xim av-lub cev tsis taus, ntxeem tau ntawm cov hmoov hlau uas tuav ua ke los ntawm cov kab mob caj dab. Nws yog lub sijhawm ua haujlwm nrog kev saib xyuas.
Sintering: Lub ntsiab lus ntawm Tsis Rov Qab
Sintering yog lub plawv ntawm cov txheej txheem MIM. Qhov no yog qhov chaw xim av dhau los ua ib qho khoom siv hlau. Koj nyob nraum cua sov nws nyob rau hauv ib tug tswj qhov cub-feem ntau hydrogen los yog nqus tsev vacuum-kom nyob rau hauv qab ntawm cov hlau melting point. Cov particle fuse. Ib feem shrinks, kwv yees thiab uniformly, koj cia siab. Peb tham txog qhov poob qis, feem ntau nyob ib puag ncig 15-20%, uas yog qhov tseeb them nyiaj rau hauv pwm tsim. Tab sis kev kwv yees yog ib lo lus theoretical.
Kuv tau ua haujlwm ntawm cov khoom ntim siab rau rab phom sear. Ib feem yog ib tug ntev, nyias lever. Nyob rau hauv lub qhov cub, qhov chaw yog txhawb rau ntawm ceramic setters. Yog hais tias tus setter tsis zoo tag nrho, los yog lub cub tawg muaj ib qho chaw kub, qhov ntev ntawm qhov yuav sag nyob rau hauv nws tus kheej qhov hnyav thaum lub sij hawm yas theem ntawm sintering. Peb muaj batch qhov twg 30% tuaj nrog me ntsis curvature. Tsis txaus los ua tsis tiav qhov ntsuas mus / tsis mus tam sim, tab sis txaus los cuam tshuam lub caij nplooj ntoos hlav nro hauv lub rooj sib txoos zaum kawg. Lub hauv paus ua rau? Ib tug hnav conveyor rail nyob rau hauv lub sintering rauv ua rau ib tug NW nyuam qhuav perceptible kev co thaum lub sij hawm tseem ceeb kub ramp. Nws siv sijhawm hnub los tshuaj xyuas txhua yam ua ntej peb pom nws.
Cov huab cua yog lwm qhov sib txawv uas ntsiag to. Rau stainless hlau 17-4PH, koj xav tau ib nrab siab ntawm ib yam dab tsi los tswj cov ntsiab lus carbon, uas ncaj qha cuam tshuam rau qhov kawg hardness thiab corrosion kuj. Ib qho me me hauv lub qhov cub qhov rooj gasket qhia txog cov pa oxygen, thiab koj tau txais oxidation saum npoo uas tuaj yeem ua rau lub neej qaug zog. Koj tsis pom nws mus txog thaum koj ua cov tshuaj ntsev ntsev. Nws yog cov kev sib cuam tshuam zais cia uas cais lub khw uas tsuas yog khiav qhov chaw los ntawm ib qho uas engineers lawv.
Qhov twg MIM haum thiab qhov twg nws tsis
MIM tsis yog qhov hloov pauv rau machining lossis peev casting hla lub rooj tsavxwm. Nws qhov chaw qab zib yog qhov nyuaj, me me-rau-nruab nrab qhov loj me (xav tias qis dua 100 grams, feem ntau qis dua 25 grams) uas xav tau ze-net-puab tsim nyob rau hauv ntim ntawm 10k daim ib xyoo upwards. Xav txog cov khoom siv iav, orthopedic brackets, phom phom, connectors. Yog tias koj tuaj yeem tshuab nws yooj yim los ntawm bar Tshuag hauv ob qhov haujlwm, MIM tej zaum tsis yog tus nqi sib tw, txawm tias ntim. Tus nqi cuab yeej yog qhov thaiv.
Tab sis rau ib feem zoo li lub tsev me me stainless hlau nrog cov xov sab hauv, sab qhov, thiab cov phab ntsa nyias? Qhov ntawd yog qhov MIM ci. Koj mold tag nrho cov nta hauv ib qho kev txhaj tshuaj. Lwm txoj hauv kev yuav yog CNC machining ntau qhov chaw me me, nrog cov khoom siv loj loj thiab lub sijhawm qeeb qeeb. Kuv nco ntsoov ntsuam xyuas ib feem rau ib qho khoom siv kho hniav. Nws yog zoo li ib tug me me, complex hlau puzzle. Machining tus nqi yog astronomical thiab muaj cov teeb meem kam rau ua. MIM tau coj nws mus rau qhov muaj peev xwm ua tau, txawm hais tias peb yuav tsum rov tsim qee qhov chaw sab hauv kom tsis txhob muaj teeb meem ntawm cov hmoov ntim thaum lub sij hawm molding.
Cov khoom siv feem ntau yog cov ntsiab lus ntawm kev sib tham. Ib qho sintered MIM feem ntau yog 95-99% ntawm qhov ntom ntawm cov khoom siv wrought. Rau ntau daim ntawv thov, cov khoom siv kho tshuab muaj ntau tshaj qhov tsim nyog. Tab sis yog tias koj xav tau qhov kawg tensile lub zog los yog elongation uas phim ib feem forged, MIM tej zaum yuav tsis tuaj rau koj. Nws yog kev lag luam tawm. Koj tab tom ua lag luam me ntsis ntawm qhov kawg kev ua tau zoo rau kev tsim complexity thiab chav tsev nqi ntawm nplai.
Lub Machining Handshake: Vim Li Cas Cov Neeg Koom Tes Zoo Li QSY Matter
Qhov no yog lub ntsiab lus tseem ceeb feem ntau tsis nco qab: tsawg kawg ntawm MIM qhov chaw yog qhov zoo nkauj tiag tiag. Feem ntau yuav tsum tau ua haujlwm thib ob. Qhov ntawd yog qhov uas muaj kev sib koom tes nrog kev sib sib zog nqus hauv dej tsis yog yooj yim xwb; nws yog qhov tseem ceeb. Coj ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Koj saib lawv cov keeb kwm-tshaj 30 xyoo hauv casting thiab machining. Qhov ntawd qhia koj ib yam. Thaum kuv muab MIM qhov chaw lossis koom tes nrog lub molder, kuv tsis yog yuav qhov kev pabcuam sintering xwb. Kuv tab tom yuav lub peev xwm los tswj tag nrho cov lus.
Ib tug raug scenario: peb sinter ib 316L stainless hlau valve tivthaiv. Nws xav tau ib qho tseem ceeb bore tuav rau ib tug kam rau ua ntawm +/- 0.013mm, ib tug nto tiav uas MIM ib leeg ua tsis tau. Cov txheej txheem MIM tau txais peb 95% nyob rau ntawd, nrog rau kev tswj kom txo qis. Tom qab ntawd, peb xa nws mus rau lub khw zoo li QSY rau precision CNC machining ntawm ib tug bore. Lawv cov kev paub nrog cov ntaub ntawv zoo sib xws los ntawm lawv peev casting thiab plhaub molding kev ua haujlwm txhais tau tias lawv nkag siab txog metallurgy. Lawv paub yuav ua li cas fixture ib feem sintered (nws tsis yog raws li nruj raws li ib tug wrought dawb paug), dab tsi pub thiab speeds siv nyob rau hauv ntxeem tau ze-net-puab geometry, thiab yuav ua li cas tuav lub corrosion kuj ntawm stainless tom qab machining. Sim ua qhov ntawd nrog lub khw muag khoom siv tshuab yog ib daim ntawv qhia rau cov khoom seem thiab kev mob siab.
Lawv ua hauj lwm nrog tshwj xeeb alloys -cobalt-based alloys, Nickel-raws li alloys- yog lwm qhov tseem ceeb sib tshooj. Cov no muaj nyob rau hauv MIM rau kev kho mob thiab aerospace daim ntawv thov. Lawv nyuaj rau tshuab. Lub molder uas muaj peev xwm sinter Inconel 718 thiab ib tug machinist uas ua tiav nws yog ib tug haib ua ke. Nws txhawb nqa cov saw hlau thiab, qhov tseem ceeb tshaj, ua kom lub luag haujlwm zoo tsis sib cais ntawm peb tus neeg muag khoom sib txawv. Koj tuaj yeem pom lawv ntawm lawv lub platform, https://www.tsingtaocnc.com, uas qhia txog lawv txoj kev muaj peev xwm hla kev. Qhov kev koom ua ke ntawd yog qhov hloov pauv MIM zoo rau hauv kev ntseeg siab, ua haujlwm siab.
Cov Lus Qhia los ntawm Cov Trenchs: Ib Qhov Kev Ua Tsis Taus Uas Qhia Tshaj Li Kev Ua tiav
Cia kuv qhia qhov ua tsis tiav. Thaum ntxov, peb muaj ib qhov project rau lub koob yees duab drone gimbal bracket hauv 17-4PH. Ib feem muaj nyias, cantilevered caj npab. Tsim zoo rau ntawm qhov screen. Thawj cov ntawv dhau los soj ntsuam. Txog li 50,000 daim rau hauv kev tsim khoom, peb pib tau txais cov ntaub ntawv rov qab rau cov caj npab tawg. Kev soj ntsuam tsis ua haujlwm tau taw qhia rau qhov sib cuam tshuam porosity raws li qhov nruab nrab ntawm caj npab, ua raws li kev ntxhov siab concentrator.
Lub post-mortem yog mob tab sis kev kawm. Qhov teeb meem yog nyob rau hauv lub pwm tsim. Lub rooj vag - qhov twg cov khoom noj nkag mus rau hauv kab noj hniav - tau muab tso rau qhov yooj yim ntawm kev tshem tawm, tsis zoo txaus. Rau lub caj npab nyias, nws ua rau me ntsis hesitation nyob rau hauv lub ntws pem hauv ntej thaum txhaj tshuaj. Qhov micro-hesitation ntawd tso cai rau cov hmoov thiab cov ntaub ntawv sib cais tsuas yog ib feem, ua rau muaj qhov sib txawv ntawm qhov ntom ntom. Hauv sintering, qhov kev hloov pauv tau dhau los ua qhov hloov maj mam, intergranular pore qauv. Nws tsis raug ntes los ntawm cov qauv ntsuas qhov ntom ntom lossis txawm tias X-ray ntawm peb tus lej ntsuas. Nws tsuas yog ua tsis tiav nyob rau hauv dynamic qaug zog nyob rau hauv lub tshav pob.
Kev txhim kho yog kim: pwm tshiab nrog lub qhov rooj hloov kho thiab lub tshuab kub khiav kom tswj tau zoo dua. Nws tau qhia kuv tias nrog MIM, txhua qhov kev txiav txim siab tsim qauv - qhov chaw ntawm lub rooj vag, phab ntsa thickness hloov pauv, lub kaum sab xis - muaj txoj kab ncaj nraim rau qhov txiaj ntsig microstructural. Koj tsis yog tsim ib feem xwb; koj tab tom tsim txoj kev ntws ntawm cov hmoov-binder slurry thiab nws tom qab sib sau ua ke los ntawm tshav kub. Nws yog ib qho kev sib tw hauv tshuab engineering disguised li txheej txheem hlau.
Yog li, thaum tib neeg nug seb Hlau Txhaj Moulding puas yog rau lawv qhov project, kuv cov lus teb yeej tsis yooj yim yog los yog tsis. Nws yog ib tug series ntawm cov lus nug txog geometry, ntim, cov ntaub ntawv specs, thiab, qhov tseem ceeb, yuav ua li cas tshwm sim tom qab ib feem tawm ntawm sintering rauv. Nws yog ib qho cuab yeej muaj zog, tab sis nws yog ib qho tseeb. Koj yuav tsum nkag siab nws cov lus - hom lus ntawm feedstock, sintering atmospheres, thiab isotropic shrink - thiab koj xav tau cov neeg koom tes uas hais cov lus nyob ib sab ntawm precision machining thiab metallurgy los ua qhov kawg hu nkauj. Qhov ntawd yog lub ntiaj teb tiag tiag ntawm MIM, deb ntawm cov ntawv tshaj tawm glossy.
