Kev sib piv ntawm Sintered Hlau Hmoov Plasticizing Extrusion Moulding thiab Txhaj Moulding Txheej Txheem

Kev sib piv ntawm Sintered Hlau Hmoov Plasticizing Extrusion Moulding thiab Txhaj Moulding Txheej Txheem

Hnub no,hmoov metallurgythev naus laus zis tau tsim los rau ntau ceg thiab cov txheej txheem sib txawv, cov uas ob feem ntau cov txheej txheem yog plasticizing extrusion molding thiab txhaj tshuaj molding. Txawm hais tias ob leeg yog cov hmoov metallurgy, lawv kuj muaj ntau qhov sib txawv. Hnub no wb mus saib daim kab xev me me ua ke.

Ua ntej, cia peb saib cov txheej txheem hlau hmoov plasticizing extrusion, uas yog cov txheej txheem tshiab tsim los ntawm cov hlau hmoov lub hnab ntawv extrusion thiab lwm yam txheej txheem. Nws tuaj yeem siv los extrude tooj liab, tungsten, nyuaj alloys, siab melting point intermetallic tebchaw, thiab cov ntaub ntawv ceramic nrog zoo fluidity ntawm qis kub. Tam sim no, muaj cov khoom siv extrusion tsis tu ncua rau cov txheej txheem no. Cov khoom siv nyob rau hauv cov txheej txheem no yog cov hmoov hlau nrog zoo heev fluidity ntxiv nrog ib tug npaum li cas ntawm accelerator. Qhov khoob uas tsim los ntawm cov txheej txheem no tuaj yeem dhau los ua cov khoom kawg tom qab ziab thiab sintered.

Cia peb saib lwm yam tshiab hlau tivthaiv txheej txheem - hlau txhaj molding. Nws yog ib qho nyob ze cov txheej txheem sib sau ua ke uas sib xyaw cov hmoov hlau metallurgy nrog niaj hnub yas txhaj tshuaj molding tshuab thiab tso siab rau kev tsim kho cov ntaub ntawv tsim khoom thiab pub khoom siv tshuab. Nws yog txheej txheem tsim nrog keeb kwm ntev tab sis kev txhim kho qeeb. Cov txheej txheem tseem ceeb ntawm cov txheej txheem no yog txhaj cov hmoov sib tov ntawm cov hmoov hlau thiab nplaum rau hauv cov kab noj hniav tshwj xeeb hauv qee qhov kub thiab txias kom tau txais qhov khoob uas nyob ze rau qhov loj thiab cov duab ntawm cov khoom kawg, thiab tom qab ntawd debond thiab sinter lub dawb paug kom tau txais cov khoom kawg nrog qee yam khoom siv kho tshuab.

Los ntawm cov lus piav qhia saum toj no, nws tuaj yeem pom tias cov hmoov yas extrusion molding thiab txhaj tshuaj molding muaj ntau yam zoo sib xws, yog li nyob rau xyoo tas los no ob qho tib si ntawm ob txoj kev no tau ua tiav kev loj hlob sai. Lawv cov txiaj ntsig zoo tuaj yeem raug sau tseg hauv plaub lub ntsiab lus: nyob ze ntawm qhov sib sau ua ke, uas tuaj yeem ua ob qho tib si rau qhov khoob ze tshaj plaws rau qhov kawg ntawm cov khoom ntawm ib zaug; Siv cov tsoos casting, machining, thiab lwm txoj hauv kev los tiv thaiv kev tsim cov khoom siv hlau nyuaj, tshwj xeeb tshaj yog cov khoom me me thiab cov khoom siv elongated, muaj txiaj ntsig zoo; Qhov ntau ntawm cov ntaub ntawv muaj ntau heev, thiab qee cov ntaub ntawv uas tsis zoo ntawm kev npaj cov khoom tiav siv cov qauv siv tau siv ob txoj kev no; Ob txoj kev no tuaj yeem siv los ua kev tshawb fawb thiab kev tsim kho tshiab rau cov ntaub ntawv tshiab thiab cov khoom siv.

Ib qho tseem ceeb ntawm ob qho tib si yog kev siv cov nplaum. Los ntawm qhov kev xav ntawm kev xaiv thiab kev tsim cov nplaum, cov nplaum siv hauv ob qho tib si tuaj yeem muab faib ua peb lub tshuab: siv quav ciab raws li, methyl cellulose raws li, thiab cov yas raws li, nrog cov nqi sib xws, tag nrho ntawm 8 feem pua ​​​​mus rau 20 feem pua ​​​​ntawm qhov loj. . Los ntawm kev siv thev naus laus zis, nws yog ib qho tsim nyog yuav tsum tau ua kom huv si tshem tawm cov nplaum tom qab qhov khoob tau tsim.

Txawm li cas los xij, tseem muaj qhov sib txawv tseem ceeb ntawm ob. Nyob rau hauv cov nqe lus ntawm raw cov ntaub ntawv, cov hmoov hlau siv rau plasticizing thiab extrusion molding muaj ib tug kuj loj particle loj variation ntau yam, xws li los ntawm ob peb microns mus rau ob peb puas microns; Txawm li cas los xij, kev txhaj tshuaj hlau yuav tsum muaj qhov yuav tsum tau muaj rau cov hmoov hlau, nrog qhov loj me feem ntau ntawm 0 5-20 microns. Nws muaj cov kev xav tau ntau dua rau kev npaj cov hmoov hmoov thiab cov hmoov zoo, yog li cov khoom tsim muaj ntau ntom ntom, nrog me me shrinkage tus nqi thaum lub sij hawm sintering, thiab siab dua qhov tseeb.

Yog tias muaj qhov sib txawv ntawm ob, qhov sib txawv ntawm qhov quab yuam los ntawm cov cuab yeej tsim thiab cov khoom siv yog qhov sib txawv tseem ceeb. Lub plasticizing extrusion molding siv lub tshuab tshwj xeeb extrusion molding tshuab, qhov twg cov khoom raug deformation nyob rau hauv ob qho tib si kev qhia ntawm compression thiab nyob rau hauv ib qho kev coj ntawm extrusion thiab stretching, thiab extrusion siab feem ntau tsis tshaj 300Mpa; Nyob rau hauv lub tshuab txhaj tshuaj molding siv rau kev txhaj tshuaj molding, cov khoom yog raug rau ib tug peb-dimensional compressive kev nyuaj siab thaum lub sij hawm molding txheej txheem, thiab nws deformation yog compression deformation ntawm peb-dimensional quab yuam.

Los ntawm kev sib piv qhov sib xws thiab qhov sib txawv ntawm ob, peb paub tias ob qho tib si yog txoj kev txhim kho tshiab ntawm cov hmoov hlau metallurgy niaj hnub no, thiab tuaj yeem ua kom zoo dua hauv kev tsim cov khoom me me thiab cov khoom sib txawv ntawm cov khoom siv nyuaj. Yog tias qhov kev xav tau tshwj xeeb tsis yog siab tshwj xeeb, cov txheej txheem plasticizing extrusion molding tuaj yeem siv los txo cov nqi tsim khoom, kev tsim cov khoom uas muaj cov kev xav tau siab tshaj plaws tsuas yog ua tiav los ntawm cov hmoov hlau txhaj tshuaj molding, uas muaj cov kev cai nruj rau cov hmoov particle loj.