Thaum koj hnov 'cov hmoov metallurgy manufacturers', feem ntau lub siab dhia ncaj nraim mus rau lub classic xovxwm-thiab-sinter lag luam rau kev yooj yim zog los yog bushings. Qhov ntawd yog lub ntsiab lus nkag, paub meej, tab sis nws yog me ntsis zoo li hais tias tus kws ua zaub mov tsuas yog paub ua kom boil dej. Qhov tob tiag tiag - thiab qhov twg mob taub hau thiab kev tawg tshwm sim - yog nyob rau hauv tag nrho cov saw: los ntawm cov hmoov hlau alloy xaiv thiab cov txheej txheem siab heev xws li hlau txhaj tshuaj molding (MIM) lossis txias isostatic nias (CIP), mus txog rau cov haujlwm tseem ceeb thib ob. Muaj ntau cov lus nug nrhiav tsis pom qhov no. Lawv xav tau ib qho 'hmoov metallurgy ib feem' tab sis tsis qhia qhov ceev uas xav tau, tom qab sintering tolerances, los yog seb nws xav tau kev kho cua sov los yog impregnation. Qhov ntawd yog qhov uas cov phiaj xwm kaw lossis ua tsis tiav. Kuv twb pom ntau zaus lawm.
Lub Alloy Powder Maze
Nws pib nrog hmoov. Tsis yog tag nrho cov hmoov hlau yog tsim sib npaug. Dej-atomized piv rau roj-atomized muab koj cov duab sib txawv thiab cov yam ntxwv ntws, uas ncaj qha cuam tshuam li cas cov hmoov ua rau tuag thiab nws lub zog ntsuab kawg. Rau qhov ua tau zoo, zoo li cov uas xav tau kev qaug zog, koj tab tom saib cov hmoov ua ntej-alloyed-cov khoom xws li diffusion-bonded Fe-Ni-Mo lossis cov qib tsis zoo stainless hlau ntau dua. Tus nqi dhia yog qhov tseem ceeb, thiab tsis yog txhua tus hmoov metallurgy chaw tsim tshuaj paus khaws cov khoom muag dav. Lawv tuaj yeem npaj cov qauv F-0008 tab sis yuav tsum tau xaj tshwj xeeb lwm yam, ntxiv lub lis piam mus rau lub sijhawm ua.
Tom qab ntawd muaj lub binder. Rau MIM, uas yog qhov zoo heev rau qhov nyuaj, me me geometries, lub binder system yog ib nrab ntawm kev sib ntaus sib tua. Debinding yog ib tug qeeb, ilv txheej txheem; maj nws thiab koj tau tawg los yog distortion. Kuv nco qab txog ib qhov project rau cov khoom siv phais phais uas tus neeg siv khoom tau hais rau lub voj voog sintering hnyav heev kom txuag tau sijhawm. Qhov tshwm sim? Cov ntsiab lus carbon tau tawm, ua rau brittleness. Peb yuav tsum rov qab mus, tweak lub binder formulation, thiab qeeb txhua yam. Daim ntawv qhia hmoov yog kev cog lus, tsis yog ib yam uas koj pauv tau yooj yim.
Qhov no yog qhov uas muaj kev koom tes nrog cov khoom siv dav dav them nyiaj. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), piv txwv li, los ntawm keeb kwm tob hauv casting tshwj xeeb alloys. Qhov kev paub ntawm metallurgical tsis yog ploj mus thaum koj saib hmoov. To taub yuav ua li cas npib tsib xee-raws li alloys coj nyob rau hauv tshav kub, piv txwv li, yog ncaj qha hloov mus rau sintering lawv nyob rau hauv ib tug hmoov daim ntawv. Nws qhia lawv txoj hauv kev rau lub tshuab cua sov tswj thiab cua txias, uas yog ua-lossis-so rau cov khoom kawg.
Compaction: Nws tsis yog ib qho loj rauj
Pa pressing yog ib qho txuj ci ntawm nws tus kheej. Ntau theem, cov phab ntsa nyias lossis cov kev hloov pauv hauv cov tuab, yog qhov tsis zoo rau qhov sib txawv ntawm qhov ntom ntom. Koj tuaj yeem tawm mus nrog nws rau qhov tsis tshua muaj kev ntxhov siab, tab sis rau txhua yam qauv, qhov kev hloov pauv yog qhov tsis muaj zog. Tooling tsim ntawm no yog txhua yam - qhov sib lawv liag ntawm punches, hmoov pub system. Ib qho zoo hmoov metallurgy chaw tsim tshuaj paus yuav khiav simulations rau cov qauv hmoov ntws thiab compaction ua ntej txiav thawj cov cuab yeej. Cov pheej yig kwv yees, thiab koj them rau nws nyob rau hauv ib feem ntawm qhov tsis sib xws.
Rau ntau cov duab, koj txav dhau nias. CIP (Cold Isostatic Pressing) siv cov kua dej los ua cov hmoov sib tov hauv cov pwm hloov tau yooj yim, muab qhov ntom ntom ntom txawm rau qhov chaw uas zoo li pretzel. Kev lag luam tawm? Thawj cov duab tsis tshua meej, yog li koj tau cog lus rau kev siv tshuab ntau dua tom qab sintering. MIM, raws li tau hais, yog lwm tsiaj nyaum nkaus. Nws zoo li cov yas txhaj tshuaj molding tab sis nrog cov hmoov hlau raug tshem tawm hauv daim ntawv khi. Qhov kev daws teeb meem nthuav dav yog qhov tsis txaus ntseeg, tab sis qhov loj me me thaum lub sij hawm sintering yog qhov loj thiab yuav tsum tau kwv yees nrog qhov tseeb heev. Koj thawj tsab xov xwm tshuaj xyuas ib txwm yog lub sijhawm nruj.
Kuv tau ua haujlwm nrog ib tus neeg siv khoom ntawm lub tsev sensor uas muaj cov kab helical sab hauv. Machining nws yog npau suav phem thiab casting tsis tuaj yeem ua tiav qhov kawg. MIM yog qhov kev daws teeb meem zoo tshaj plaws. Peb prototyped nrog peb qhov sib txawv sintering fixtures rau kev sib ntaus sib tua warpage, thiab qhov kawg tawm los tseem tsuas ntaus txog 85% ntawm thawj cov khoom khiav. Nws tsis yog ib tug loj-tsim khawv koob wand; nws yog cov txheej txheem rau cov nqi siab, qhov nyuaj uas qhov kev sib npaug ntawm tus nqi ib feem ua rau qhov kev siv zog ntawm kev txhim kho.
Lub Make-or-break: Sintering thiab Tshaj
Sintering yog qhov chaw ua khawv koob tshwm sim - thiab qhov twg muaj kev puas tsuaj feem ntau tshwm sim. Tsis yog ci xwb. Nws yog ib qho ua tib zoo choreographed thermal voj voog nyob rau hauv ib qho chaw (hydrogen, nitrogen, lub tshuab nqus tsev, los yog sib tov). Qhov kub thiab txias profile, tus nqi ramp, lub sij hawm ntub dej, thiab qhov txias ceev tag nrho hais txog qhov kawg microstructure, ntom, thiab txhua yam khoom. Kev suav tsis raug tuaj yeem ua rau blistering, sagging, lossis tsis txaus sib txuas ntawm cov khoom.
Tom qab sintering, feem ntau tsis tiav. Ntau tus xav tias ib feem sintered yog npaj rau nkoj. Rau precision Cheebtsam, yuav luag yeej tsis. Koj yuav luag ib txwm xav tau kev ua haujlwm thib ob. Qhov no yog ib cheeb tsam tseem ceeb sib tshooj. A hmoov metallurgy chaw tsim tshuaj paus uas tsuas yog nias thiab sintering yuav xa koj ib feem uas yog technically sintered tab sis siv tsis tau vim nws tsis tuaj yeem tuav rau machining. Qhov no yog vim li cas tus qauv ntawm QSY yog qhov nthuav. Lawv lub hauv paus yog nyob rau hauv CNC machining thiab peev casting. Rau lawv, ntxiv hmoov metallurgy tsis yog tsuas yog ua ib feem ntsuab xwb; nws yog hais txog kev xa cov khoom tiav, npaj txhij-rau-install. Lawv tuaj yeem sinter ze-net-zoo li thiab tom qab ntawd siv lawv lub peev xwm hauv tsev CNC los tsoo cov kev ua siab ntev ntawm cov kab uas hla los yog xov nta, ib yam dab tsi ua si PM khw muag khoom yuav tau outsource.
Kev kho cua sov, txheej txheej saum npoo (xws li chav kho rau kev tiv thaiv corrosion), lossis roj impregnation rau nws tus kheej lubrication yog lwm cov kauj ruam thib ob. Txhua tus ntxiv tus nqi thiab lub sijhawm, tab sis hla lawv raws li tus nqi pib yog kev lag luam cuav classic. Kuv tau pom cov iav pawg ua tsis tiav hauv kev sim teb vim tias lawv tau teev tseg raws li-sintered thaum lawv xav tau kev kho mob hnyav.
Cov khoom sib txawv thiab cov tswv yim sib koom ua ke
Qhov no tau mus rau qhov dav dav txog kev tshwj xeeb piv rau kev sib koom ua ke. Cov tsoos PM tsev yog tus kws tshaj lij. Tab sis rau tus neeg yuav khoom, tshwj xeeb tshaj yog ib qho kev cuam tshuam nrog cov alloys tshwj xeeb, muaj txiaj ntsig loj hauv cov chaw tsim khoom uas nkag siab txog metallurgy thoob plaws cov txheej txheem. Siv cov cobalt-based lossis nickel-based alloys QSY cov npe. Cov no yog cov khoom siv tawv, feem ntau kim siv nyob rau hauv high-temperature los yog corrosive ib puag ncig. Kev tsim lawv los ntawm cov hmoov hlau metallurgy tuaj yeem txuag tau ntau cov khoom siv piv rau kev ua haujlwm los ntawm cov khoom lag luam bar. Tab sis kev ua lawv yog qhov nyuaj. Lawv cov kev paub hauv kev nqis peev casting tib yam alloys txhais tau tias lawv twb paub yuav ua li cas rau lawv nyob rau hauv ib lub xeev molten los yog semi-molten; uas intuition txhais los tswj sintering kub thiab tiv thaiv kom txhob muaj kab mob nyob rau hauv lub cub tawg.
Nws kuj cuam tshuam rau kev tswj kom zoo. Lawv zoo li yuav saib tib yam ntawm qhov tsis xws luag: porosity, inclusions, grain size abnormalities. Lawv txoj kev NDT (tsis muaj kev puas tsuaj) txoj hauv kev tuaj yeem tsim tau ntau dua vim tias kev ua yeeb yam feem ntau xav tau nws. Qhov kev paub txog tus txheej txheem hla no yog ib qho khoom muaj nqis uas qhov tshiab, ib qho txheej txheem PM khw yuav tsis muaj.
Los ntawm kev saib xyuas qhov project, nws simplifies yam. Hloov chaw ntawm kev sib koom tes ntawm PM tus neeg muag khoom, tus kws kho tshuab, thiab tus kws kho cua sov, koj muaj ib qho kev sib cuag tswj hwm tag nrho cov dej ntws. Qhov kev pheej hmoo ntawm tus ntiv tes taw tes thaum lub siab ntev tsis nco qab kev siv tshuab ploj. Cov lus tawm tswv yim ntawm pab pawg sintering thiab pab pawg machining yog tam sim ntawd vim lawv nyob hauv tib lub tsev.
Muaj tiag Sourcing thiab zaum kawg xav
Yog li, thaum koj ntsuas hmoov metallurgy manufacturers, tsis txhob nug ib daim ntawv qhia txog kev muaj peev xwm xwb. Nug txog lawv cov qauv hmoov qib thiab lawv lub sijhawm ua haujlwm ntawm cov khoom tshwj xeeb. Nug kom pom cov piv txwv ntawm qhov lawv tau ua uas yuav tsum tau ua haujlwm thib ob thiab seb lawv kho lawv li cas. Nug txog lawv cov txheej txheem sintering cua thiab tswj qhov kub thiab txias. Nug txog qhov project ua tsis tiav thiab lawv tau kawm dab tsi los ntawm nws. Cov lus teb yuav qhia koj ntau dua li cov npe ntawm cov xovxwm tonnages.
Lub teb tsis zoo li qub. Muaj kev loj hlob ntawm kev siv cov khoom siv ntxiv nrog cov hmoov hlau, uas yog cov hmoov metallurgy tiag tiag nrog lub laser. Cov kab yog qhov muag plooj. Ib lub chaw tsim khoom daig hauv xyoo 1990s xovxwm-thiab-kev xav yuav tawm tsam nrog kev sib koom ua ke ntau dua, muaj txiaj ntsig zoo rau yav tom ntej.
Thaum kawg, nws los rau qhov no: hmoov metallurgy yog ib qho txhais tau tias mus rau qhov kawg. Qhov kawg yog qhov ua haujlwm zoo, txhim khu kev qha hlau tivthaiv. Cov tuam txhab tsim khoom zoo tshaj plaws nkag siab tag nrho cov kev taug kev los ntawm cov hmoov mus rau qhov kawg, thiab lawv muaj kev txawj ntse ntxiv-zoo li cov CNC machining thiab cov kws tshaj lij alloy pom ntawm lub tuam txhab zoo li QSY-kom paub meej tias txoj kev taug mus tau zoo. Nws yog qhov kev pom zoo, ntau tshaj li ib qho khoom siv, uas cais cov neeg sib tw tiag tiag los ntawm cov khw muag khoom yooj yim.
