Micro Gears MIM Parts

Qhov loj me me ntawm cov hmoov hlau siv hauv cov txheej txheem MIM feem ntau yog 0.5-20 μm. Kev hais lus theoretical, qhov zoo dua cov khoom, qhov loj dua qhov chaw tshwj xeeb, uas yooj yim dua rau cov duab thiab sinter.

Xa kev nug

Khoom Taw Qhia

Micro Gears MIM Parts
Yam khoom	Khoom siv	Txheej txheem ntau lawm		Sintering kub		Pwm	Kev cai
	17-4	Hlau Txhaj Molding		1350-1500 degree		Yuav tsum customized	Yog lawm
Tshuaj muaj pes tsawg leeg	C: Tsawg dua lossis sib npaug rau 0.07 Mn: Tsawg dua lossis sib npaug rau 1.00 Si: Tsawg dua lossis sib npaug rau 1.00 Cr: 15.5 ~ 17.5 hli Ni:3.0~5.0 P: Tsawg dua lossis sib npaug rau 0.04 S: Tsawg dua lossis sib npaug rau 0.03 Cu:3.0~5.0 Nb plus Ta:{{0}}.15~0.45
Cov ntaub ntawv muaj	Tsawg carbon stainless hlau, titanium alloy (Ti, TC4), tooj liab alloy, tungsten alloy, nyuaj alloy, kub kub alloy (718, 713)
Ua kom tiav	Dimensional raug		Khoom ntom ntom		Cov tsos mob kho			Qhov hnyav
Roughness 1-5μm	± {{0}}.1 feem pua -±0.5 feem pua )		92-95 feem pua		Daim iav Reflection Electrolytic polishing			0.03g-400g）
Mechanical zog	Tensile zog σb (MPa): hnub nyoog ntawm 480 degree, Ntau tshaj los yog sib npaug rau 1310; hnub nyoog ntawm 550 degree, Ntau dua lossis sib npaug rau 1060; hnub nyoog ntawm 580 degree, Ntau dua lossis sib npaug rau 1000; hnub nyoog ntawm 620 degree, Ntau dua lossis sib npaug rau 930 Conditional yield zog σ0.2 (MPa): hnub nyoog ntawm 480 degree, Ntau tshaj los yog sib npaug rau 1180; hnub nyoog ntawm 550 degree, Ntau dua lossis sib npaug rau 1000; hnub nyoog ntawm 580 degree , Ntau dua lossis sib npaug rau 865; hnub nyoog ntawm 620 degree, Ntau dua lossis sib npaug rau 725 Elongation δ5 (%) : kev laus ntawm 480 degree, Ntau dua lossis sib npaug rau 10; Kev laus ntawm 550 degree, Ntau dua lossis sib npaug rau 12; kev laus ntawm 580 degree, Ntau dua lossis sib npaug rau 13; Kev laus ntawm 620 degree, Ntau dua lossis sib npaug rau 16 Kev txo qis ntawm thaj tsam ψ (%) : kev laus ntawm 480 degree, Ntau dua lossis sib npaug rau 40; Kev laus ntawm 550 degree, Ntau dua lossis sib npaug rau 45; Kev laus ntawm 580 degree, Ntau dua lossis sib npaug rau 45; Kev laus ntawm 620 degree, Ntau dua lossis sib npaug rau 50 Hardness: cov tshuaj tov, Tsawg dua los yog sib npaug rau 363HB thiab Tsawg dua los yog sib npaug rau 38HRC; 480 degree kev laus, Ntau dua lossis sib npaug rau 375HB thiab Ntau dua lossis sib npaug rau 40HRC; 550 degree kev laus, Ntau dua lossis sib npaug rau 331HB thiab Ntau dua lossis sib npaug rau 35HRC; 580 degree kev laus, Ntau dua lossis sib npaug rau 302HB thiab Ntau dua lossis sib npaug rau 31HRC; 620 degree kev laus, Ntau dua lossis sib npaug rau 277HB thiab Ntau dua lossis sib npaug rau 28HRC

1. Micro iav MIM cov txheej txheem ntau lawm thiab kev xaiv qhov ntsuas
Kev sim xaiv txoj kev ntawm cov txheej txheem tsis thiab qhov tseem ceeb rau kev tsim khoom loj ntawm micro iav.

2. Kev xaiv cov hmoov hlau thiab cov ntawv khi
Qhov loj me me ntawm cov hmoov hlau siv hauv MIM cov txheej txheem feem ntau yog {{0}} 5-20 μm. Kev hais lus theoretical, qhov zoo dua cov khoom, qhov loj dua qhov chaw tshwj xeeb, uas yooj yim dua rau cov duab thiab sinter. Tam sim no, txoj hauv kev tseem ceeb ntawm kev tsim cov hmoov rau MIM qhov chaw yog: dej atomization txoj kev, roj atomization txoj kev, thiab txoj kev tshem tawm hauv paus. Txhua txoj kev muaj nws tus kheej qhov zoo thiab qhov tsis zoo: txoj kev dej atomization yog cov txheej txheem tseem ceeb ntawm cov hmoov nplej, uas muaj kev ua haujlwm siab thiab kev lag luam ntau hauv cov khoom loj, thiab tuaj yeem ua rau cov hmoov zoo dua, tab sis cov duab tsis zoo, uas yog. conducive rau cov duab tuav, tab sis nws yog qhov zoo dua los siv viscose Muaj ntau cov binders, uas cuam tshuam rau qhov raug. Tsis tas li ntawd, oxide zaj duab xis tsim los ntawm qhov kub-kub cov tshuaj tiv thaiv ntawm cov dej thiab hlau cuam tshuam sintering. Txoj kev roj atomization yog txoj hauv kev tseem ceeb los tsim cov hmoov rau MIM. Cov hmoov nws tsim yog spherical, nrog tsawg oxidation degree, tsawg binder yuav tsum tau, zoo formability, tab sis siab nqi thiab tsis zoo zoo tuav. Cov hmoov ua los ntawm txoj kev dial-up muaj siab purity thiab zoo heev particle loj. Nws yog qhov tsim nyog tshaj plaws rau MIM, tab sis nws tsuas yog txwv rau Fe, Ni thiab lwm yam hmoov, uas tsis tuaj yeem ua tau raws li qhov xav tau ntawm ntau yam khoom siv. Txhawm rau ua kom tau raws li cov hmoov yuav tsum tau ntawm MIM qhov chaw, ntau lub tuam txhab ua hmoov tau txhim kho cov txheej txheem saum toj no, thiab kuj tau tsim cov txheej txheem ua hmoov xws li micro-atomization thiab laminar flow atomization. Kev xaiv cov hmoov yuav tsum tau muab xam los ntawm cov yam ntxwv ntawm MIM qhov cuab yeej technology, cov khoom zoo, kev ua tau zoo, nqi, thiab lwm yam. Tam sim no, dej atomized hmoov thiab roj atomized hmoov feem ntau yog tov, lub qub tsub kom tus kais ceev thiab lub tom kawg tswj cov duab tuav. . Txij li cov iav siv nyob rau hauv ib puag ncig corrosive, dej atomized 316L stainless hlau hmoov yog siv, thiab nws cov tshuaj muaj pes tsawg leeg (feem ntau) yog: Cr: 17.0 feem pua , N: 11.5 feem pua , Mo: 2.2 feem pua , C: tsis ntau tshaj 0.3 feem pua, Fe: nyob ib ncig ntawm 69 feem pua. Nws lub cev muaj zog muaj npe nyob rau hauv Table 1.
Nyob rau hauv tus txheej txheem ntawm MIM qhov chaw, lub binder plays lub luag hauj lwm tseem ceeb heev. Nws cuam tshuam ncaj qha rau kev sib xyaw, kev txhaj tshuaj molding, degreasing thiab lwm yam txheej txheem, thiab muaj kev cuam tshuam zoo rau qhov zoo, degreasing, qhov tseeb qhov tseeb thiab alloy muaj pes tsawg leeg ntawm kev txhaj tshuaj molding dawb paug. Cov binders siv nyob rau hauv MIM muaj xws li thermoplastic systems, thermosetting systems, dej-soluble systems, gel systems thiab tshwj xeeb systems, txhua yam muaj nws tus kheej zoo thiab tsis zoo. Thermoplastic binder systems yog lub hauv paus ntsiab lus thiab tus thawj coj ntawm MIM qhov chaw binders. Thermosetting tshuab Adhesive tsis tshua siv. Txawm hais tias cov nplaum no muaj qhov zoo khaws cia, lawv nyuaj rau tshem tawm. Ntawm no, lub binder yog ib tug thermoplastic binder nrog ib tug qauv ntawm 70 feem pua ntawm paraffin wax thiab 30 feem pua high-density polyethylene.

3. Sib tov, granulation thiab txhaj tshuaj molding
Tom qab cov hmoov thiab binder txiav txim siab, kneading yog ib txoj kev nyuaj ntawm kev txhim kho hmoov fluidity thiab ua tiav dispersion. Feem ntau siv cov khoom sib xyaw muaj xws li ntxaib-ntsia hlau extruder, Z-shaped impeller tov khoom, ob chav planetary tov khoom, thiab lwm yam, thiab cov txheej txheem txuas ntxiv yog tam sim no tsim. Tus nqi pub mis, sib tov kub thiab kev sib hloov ceev thaum sib tov yuav tag nrho cuam tshuam rau kev sib xyaw. Ntawm no, cov hmoov thiab binder tau sib xyaw rau ntawm ob lub ntiaj teb sib tov ntawm qhov chaw thau khoom (ntim feem) ntawm 63: 37 rau 1.5 h, thiab qhov sib xyaw kub yog 13 0 ± 10 degree , kom cov hmoov thiab cov ntawv khi tau tag nrho tov thiab ces tov nyob rau hauv ib tug granulation yog ua nyob rau hauv ib tug ntsia hlau extrusion ntaus ntawv, lub granulation kub yog 130 degree -150 degree, thiab cov ntsia hlau tig ceev yog 40 r / min. Siv TMC60EV txhaj tshuab rau txhaj tshuaj molding. Ib qho ntawm cov teeb meem tseem ceeb hauv kev txhaj tshuaj molding yog ntau yam kev tsim muaj feem xyuam rau molding, nrog rau cov khoom tsim thiab pwm tsim. Txawm hais tias cov khoom tsim tawm tam sim no tuaj yeem yog los ntawm 0.003 g mus rau 200 g, thiab qhov tseem ceeb tau ua tiav hauv kev txhim kho qhov tseeb, feem ntau cov qauv tsim, tshwj xeeb tshaj yog pwm tsim, yog raws li kev paub dhau los, tsis muaj kev paub tsim qauv, thiab CAD systems nyuaj rau siv MIM zoo. . Lub hauv paus ntsiab lus ntawm cov pwm yas tau siv los maj mam qauv MIM pwm. Nrog rau kev sib sau ntawm kev paub, lub sij hawm rau pwm tsim thiab ntau lawm yuav raug txo kom tsawg, thiab ntau kab noj hniav pwm yuav tsum tau siv ntau li ntau tau los txhim kho kev txhaj tshuaj.
Lub hom phiaj ntawm kev txhaj tshuaj molding yog kom tau txais qhov tsis xws luag-dawb txoj hauv kev tsis muaj qhov xav tau. Kev txhaj tshuaj tsis tuaj yeem raug tshem tawm hauv cov txheej txheem tom ntej, yog li cov kauj ruam no yuav tsum tau tswj nruj me ntsis. Ultrasonic kuaj tshuab tuaj yeem siv los txheeb xyuas cov teeb meem sab hauv ntawm kev txhaj tshuaj molded blanks. Kev tswj tsis raug nyob rau hauv cov theem txhaj tshuaj yog nyob ntawm qhov kev paub dhau los. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, siv lub khoos phis tawj los simulate cov txheej txheem kev txhaj tshuaj ntawm kev pub mis, thiab txuas nrog kev noj zaub mov zoo, kev ua kom zoo rau kev txhaj tshuaj tsis zoo, thiab tshem tawm cov kev txhaj tshuaj tsis zoo yog qhov kev sim siab tshaj plaws tam sim no, thiab nws tseem yog kev txhim kho yav tom ntej. sib. Nws tau raug tshaj tawm txawv teb chaws tias moldflow yog siv rau kev soj ntsuam ntawm MIM kev txhaj tshuaj, thiab ua tiav cov txiaj ntsig zoo. Peb kuj tau sim siv cov thev naus laus zis no, tab sis pom tias cov txiaj ntsig simulation tsis pom zoo nrog cov txiaj ntsig kev sim. Qhov no xav tau kev tshawb fawb ntxiv.

4. Degreasing thiab pre-sintering
Txoj kev degreasing txais yuav thermal degreasing, thiab cov txheej txheem thermal degreasing yuav tsum tau txiav txim siab raws li cov yam ntxwv thermal decomposition ntawm cov khoom sib txuas, thiab tib lub sijhawm, nws yog ib qho tsim nyog los tiv thaiv qhov tsis xws luag xws li bubbling thiab tawg ntawm cov degreasing billet vim. ntau dhau degreasing ceev. Txij li cov hmoov hlau stainless yog qhov nkag siab zoo rau cov ntsiab lus carbon, nws yog ib qho tsim nyog yuav tsum xaiv qhov chaw txo qis kom tsis txhob muaj cov pa roj carbon seem vim yog decomposition ntawm cov ntawv khi. Hauv qhov kub thiab txias ntawm chav tsev kub txog 200 ° C, qhov decomposition ntawm paraffin wax yog cov txheej txheem tseem ceeb. Cov binder hauv cov txheej txheem no Paraffin yog qhov tseem ceeb tshaj plaws, yog li txhawm rau tshem tawm cov paraffin kom tiav, cov cua kub feem ntau qis dua 1 degree / min. Lub qhov cub degreasing ntawm cov txheej txheem no yog hydrogen cua. Qhov kub degreasing yog qis dua 200 degree thiab qhov kub thiab txias tau nce ntawm qhov cua sov ntawm 0.8 degree / min. , Tshem tawm cov binder polymer tivthaiv high-density polyethylene, thiab tsim interconnected qhov. Tom qab 450 degree, qhov kub thiab txias tau nce mus rau 800 degree ntawm qhov ceev ntawm 4 degree / min, thiab tom qab ntawd khaws cia rau 45 feeb kom ua tiav cov khoom siv polymer hauv cov ntawv khi, thiab ua kom tiav cov degreasing thiab pre-sintering ntawm qhov khoob.

5. Sintering
Sintering tau ua nyob rau hauv lub tshuab nqus tsev sintering rauv nrog lub tshuab nqus tsev ntawm 0.1 Pa.
Cov txheej txheem sintering yog raws li hauv qab no: pib nrog cua kub ntawm 4 degree / min mus rau 1000 degree, tuav rau 45 feeb, ces sai li sai tau mus rau ib tug sintering kub ntawm 1 380 ± 10 (degree) ntawm 6 degree / min, tuav rau 45 feeb, thiab tom qab ntawd txias mus rau chav sov. Lub sintering kub yuav tsum ruaj khov li sai tau, thiab sintering kub fluctuates los ntawm kaum degrees Celsius, uas yuav ua rau 10 feem pua ntawm cov fluctuations nyob rau hauv sintered ceev thiab 3 feem pua ntawm cov shrinkage.
Dimensional raug thiab mechanical zog ntawm cov khoom kawg:
Rau cov khoom tiav (raws li qhia hauv daim duab 3), kev tshuaj ntsuam xyuas metallographic thiab kev ntsuas kev ua haujlwm tau ua tiav ntawm cov qauv qauv npaj ua ke nrog cov khoom. Cov qauv metallographic ntawm ib feem yog ntshiab austenite, thiab nws cov txiaj ntsig kev ntsuas kev ua tau zoo: lub zog tawm los yog 220 MPa, lub zog tensile yog 510 MPa, thiab elongation yog 45 feem pua.
8 feem pua. Randomly coj 10 ntsuas nws qhov nruab nrab ntom yog 98.8 feem pua ntawm qhov theoretical ntom. Yeej mus txog qhov theoretical Performance index, kom ua tau raws li qhov yuav tsum tau siv. Cov qauv thiab qhov loj me raws li qhov yuav tsum tau ua, thiab tsis tas yuav tsum ua.

Detection Systems

Hlau Txhaj Moulding txheej txheem