Hlau Powder Txhaj Moulding Technology (MIM) yog cov hmoov metallurgy tshiab nyob ze-net-form molding tshuab tsim los ntawm kev qhia niaj hnub yas txhaj tshuaj molding tshuab rau hauv cov hmoov metallurgy.
Kev taw qhia txuj ci
Hlau hmoov txhaj tshuaj molding tshuab ua ke nrog ntau yam kev qhuab qhia technologies xws li yas molding tshuab, polymer chemistry, hmoov metallurgy technology, thiab hlau cov ntaub ntawv science. Nws siv cov pwm rau txhaj tshuaj pwm blanks thiab sai tsim cov high-density, high-precision, peb-dimensional complex duab los ntawm sintering. Cov qauv tsim. Ua ntej, cov hmoov nplej thiab cov organic binder yog uniformly kneaded, thiab tom qab granulation, lawv raug txhaj rau hauv pwm kab noj hniav nrog ib tug txhaj molding tshuab nyob rau hauv ib tug rhuab thiab plasticized xeev (~ 150 ° C) rau solidification, thiab ces lub parison yog tsim los ntawm cov tshuaj los yog thermal decomposition. Cov binder hauv cov khoom raug tshem tawm, thiab thaum kawg cov khoom kawg yog tau los ntawm sintering thiab densification.
Cov txheej txheem thev naus laus zis no tsis tsuas yog muaj qhov zoo ntawm cov txheej txheem hmoov hlau metallurgy xws li cov kauj ruam tsawg dua, tsis muaj kev txiav tsawg dua, thiab cov txiaj ntsig kev lag luam siab, tab sis kuj kov yeej qhov tsis zoo ntawm cov khoom siv hmoov hlau metallurgy xws li cov khoom tsis sib xws, cov khoom siv tsis zoo, thiab nyuaj rau kev tsim cov phab ntsa nyias thiab cov txheej txheem nyuaj. Nws yog tshwj xeeb tshaj yog haum rau loj zus tau tej cov me me, complex thiab tshwj xeeb-yuav tsum tau hlau qhov chaw. Nws muaj cov yam ntxwv ntawm kev ua haujlwm siab, cov qauv zoo ib yam, kev ua haujlwm zoo heev thiab cov nqi tsim khoom tsawg.
Txheej txheem khiav
Txheej txheem khiav: binder → sib tov → txhaj tshuaj molding → degreasing → sintering → post-processing.
Mineral hmoov
Qhov loj me me ntawm cov hmoov hlau siv hauv MIM txheej txheem feem ntau yog 0.5 ~ 20μm; theoretically, qhov finer hais, qhov loj ntawm qhov chaw nto, ua kom yooj yim rau cov duab thiab sinter. Cov txheej txheem hmoov metallurgy siv cov hmoov coarser loj dua 40μm.
Organic nplaum
Lub luag haujlwm ntawm cov organic nplaum yog los khi cov hlau hmoov cov khoom kom cov sib tov muaj rheology thiab lubricity thaum rhuab nyob rau hauv lub chim ntawm lub tshuab txhaj tshuaj, uas yog hais tias, nws yog ib tug cab kuj uas ua rau cov hmoov ntws. Yog li ntawd, lub binder raug xaiv los ua tus cab kuj rau tag nrho cov hmoov. Yog li ntawd, kev xaiv ntawm nplaum rub yog tus yuam sij rau tag nrho cov hmoov txhaj tshuaj molding.
Cov kev xav tau rau cov organic adhesives:
1.Kev siv cov nplaum tsawg tuaj yeem ua kom zoo dua rheology ntawm qhov sib tov;
2.Tsis muaj tshuaj tiv thaiv, tsis muaj tshuaj tiv thaiv nrog hlau hmoov thaum lub sij hawm tshem tawm cov nplaum nplaum;
3.Easy tshem tawm, tsis muaj carbon nyob rau hauv cov khoom.
Sib tov
Cov hmoov hlau thiab cov organic binder yog sib xyaw ua ke los ua ntau yam khoom siv rau hauv kev sib xyaw rau kev txhaj tshuaj molding. Lub uniformity ntawm qhov sib tov ncaj qha cuam tshuam rau nws cov fluidity, yog li cuam tshuam rau kev txhaj tshuaj molding txheej txheem tsis, nrog rau qhov ceev thiab lwm yam khoom ntawm cov khoom kawg. Cov kauj ruam ntawm kev txhaj tshuaj molding txheej txheem no yog ua raws li hauv paus ntsiab lus nrog cov txheej txheem yas txhaj tshuaj molding, thiab nws cov khoom siv kuj tseem zoo ib yam. Thaum lub sij hawm txhaj tshuaj molding txheej txheem, cov khoom sib xyaw yog rhuab nyob rau hauv lub thoob ntawm lub tshuab txhaj tshuaj rau hauv cov khoom yas nrog cov khoom siv rheological, thiab raug txhaj rau hauv pwm raws li qhov tsim nyog txhaj tshuaj los ua ib qho dawb paug. Kev txhaj tshuaj molded dawb paug yuav tsum yog microscopically uniform kom cov khoom shrinks tusyees thaum lub sij hawm sintering txheej txheem.
Kev rho tawm
Cov organic binder muaj nyob rau hauv molded dawb paug yuav tsum tau muab tshem tawm ua ntej sintering. Cov txheej txheem no hu ua extraction. Cov txheej txheem rho tawm yuav tsum xyuas kom meej tias cov nplaum nplaum yog maj mam tawm ntawm qhov sib txawv ntawm qhov khoob ntawm cov kab me me ntawm cov khoom yam tsis tas yuav txo lub zog ntawm qhov khoob. Tus nqi ntawm kev tshem tawm binder feem ntau ua raws li qhov sib npaug diffusion. Sintering tuaj yeem txo qis thiab ua kom cov ntxeem tau degreased dawb paug rau hauv cov khoom nrog qee cov qauv thiab cov khoom. Txawm hais tias qhov kev ua tau zoo ntawm cov khoom muaj feem xyuam rau ntau yam txheej txheem ua ntej sintering, nyob rau hauv ntau rooj plaub, sintering txheej txheem muaj ib tug zoo los yog txawm txiav txim siab cuam tshuam rau lub metallographic qauv thiab cov khoom ntawm cov khoom kawg.
Tom qab ua tiav
Rau cov khoom uas muaj qhov loj me me, qhov yuav tsum tau ua tom qab ua tiav. Cov txheej txheem no yog tib yam li cov txheej txheem kev kho cua sov ntawm cov khoom siv hlau.
Cov txheej txheem zoo
MIM uses the characteristics of powder metallurgy technology to sinter mechanical parts with high density, good mechanical properties and surface quality; Nyob rau tib lub sijhawm, nws siv cov yam ntxwv ntawm cov yas txhaj tshuaj molding los tsim cov khoom nrog cov duab nyuaj hauv ntau qhov ntau thiab ua tau zoo.
1.Structural qhov chaw nrog cov txheej txheem nyuaj heev tuaj yeem tsim.
Cov txheej txheem hlau niaj hnub feem ntau suav nrog kev ua cov hlau phaj rau hauv cov khoom los ntawm kev tig, milling, npaj, sib tsoo, drilling, tho txawv, thiab lwm yam. Vim yog cov nqi tsim nyog thiab cov nqi sijhawm, nws nyuaj rau cov khoom zoo li no kom muaj cov txheej txheem nyuaj. MIM siv lub tshuab txhaj tshuaj los txhaj cov khoom khoob kom ntseeg tau tias cov khoom ntim puv puv pwm kab noj hniav, yog li ua kom ntseeg tau qhov kev paub txog ntawm cov txheej txheem nyuaj heev ntawm ntu.
2.Cov khoom muaj cov qauv microstructure, siab ceev thiab kev ua haujlwm zoo.
Raws li ib txwm muaj, qhov ceev ntawm cov khoom nias tuaj yeem ncav cuag qhov siab tshaj plaws ntawm 85% ntawm qhov theoretical ntom ntom; Qhov ntom ntawm cov khoom tau txais los ntawm MIM thev naus laus zis tuaj yeem ncav cuag ntau dua 96%.
3.High efficiency, yooj yim mus cuag loj thiab loj-scale ntau lawm.
Cov pwm hlau siv hauv MIM thev naus laus zis muaj lub neej ntev sib npaug ntawm kev tsim cov yas txhaj tshuaj molding pwm. Vim yog siv cov pwm hlau, MIM yog tsim rau cov khoom loj ntawm cov khoom.
4.Wide ntau yam khoom siv thiab dav daim ntawv thov teb.
MIM tuaj yeem siv yuav luag cov ntaub ntawv hlau, thiab xav txog kev lag luam, cov ntaub ntawv tseem ceeb suav nrog hlau-raws li, npib tsib xee-raws li, tsis tshua muaj hlau, tooj liab-raws li, high-speed steel, stainless hlau, gram valve alloy, cemented carbide, thiab titanium-based hlau.
5.Simificantly txuag cov ntaub ntawv raw
Feem ntau, kev siv tus nqi ntawm cov hlau hauv kev ua hlau thiab kev sib sau yog qhov tsawg. MIM tuaj yeem txhim kho kev siv tus nqi ntawm cov khoom siv raw, uas yog kev siv theoretically 100%.
6.Cov txheej txheem MIM siv micron-theem zoo hmoov.
Nws tuaj yeem tsis tsuas yog ua kom nrawm sintering shrinkage, pab txhim kho cov khoom siv kho tshuab ntawm cov ntaub ntawv, txuas ntxiv lub neej qaug zog ntawm cov ntaub ntawv, tab sis kuj txhim kho kev tiv thaiv kev ntxhov siab corrosion thiab cov khoom sib nqus.
Cov chaw thov
Nws cov khoom siv dav siv hauv kev lag luam xws li hluav taws xob cov ntaub ntawv engineering, khoom siv biomedical, khoom siv hauv chaw ua haujlwm, tsheb, tshuab, kho vajtse, khoom siv ua kis las, saib kev lag luam, riam phom thiab aerospace.
1.Computer thiab lawv cov chaw pabcuam: xws li tshuab luam ntawv qhov chaw, sib nqus cores, striker pins, thiab tsav tsheb;
2. Cov cuab yeej: xws li laum khoom, cutter khoom, nozzles, rab phom xyaum, kauv milling cutters, punches, sockets, wrenches, hluav taws xob cov cuab yeej, tes cuab yeej, thiab lwm yam.;
3. Cov khoom siv hauv tsev: xws li cov rooj zaum saib, watch chains, hluav taws xob txhuam hniav, txiab, kiv cua, golf hau, hniav nyiaj hniav kub txuas, ballpoint cwj mem clamps, txiav lub taub hau thiab lwm yam khoom;
4.Parts rau kev kho mob machinery: xws li orthodontic thav duab, txiab, thiab tweezers;
5.Military qhov chaw: missile tails, phom phom, warheads, hmoov npog, thiab fuze qhov chaw;
6. Cov khoom siv hluav taws xob: electronic ntim, micro motors, hluav taws xob qhov chaw, sensor li;
7.Mechanical qhov chaw: xws li paj rwb loosening tshuab, textile machinery, curling tshuab, chaw ua hauj lwm machinery, thiab lwm yam .;
8.Automobile thiab marine qhov chaw: xws li clutch puab nplhaib, diav rawg tes tsho, distributor tes tsho, valve qhia, synchronization hub, airbag qhov chaw, thiab lwm yam.
