Strap Lub taub hau MIM qhov chaw

Qhov tshwj xeeb lub ntiajteb txawj nqus ntawm titanium thiab titanium alloys yog yuav luag ib nrab ntawm cov hlau hlau. Lawv muaj qhov qis qis, zoo corrosion tsis kam, siab lub zog thiab txaus siab biocompatibility. Lawv tau siv dav hauv aviation, aerospace, tshuaj lom neeg kev lag luam, biomedicine thiab lwm yam kev lag luam. , thiab nqa cov txiaj ntsig kev lag luam loj rau tib neeg lub neej, tshwj xeeb tshaj yog thaum tib neeg kev cog qoob loo hloov cov pob txha ua tsis tiav, xws li cov hniav hniav, cov hauv paus hniav, cov ceg tawv thiab lwm cov pob txha ntxiv, nws yog cov khoom siv zoo uas tuaj yeem muaj txiaj ntsig zoo rau tib neeg.

Xa kev nug

Khoom Taw Qhia

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Khoom Qeb: Saib thiab Jewelry Industry

Cov khoom tseem ceeb: MIM, saib accessories, Strap Head MIM Parts

Khoom siv: Stainless hlau 316L 304 17-4PH Titanium

Kev kho deg yuav tsum tau: polishing, txhuam, sandblasting, electroplating

Dimensional kam rau ua ntau yam: customized

Khoom loj: 10mm ± 0.02-0.04mm

Strap MIM Parts
Yam khoom	Khoom siv	Txheej txheem ntau lawm		Sintering kub		Pwm	Kev cai
Pluaj nplej	Titanium alloy	Hlau Txhaj Molding		1350 degree		Yuav tsum customized	Yog lawm
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			0.03g-400g）
Txuj kev ua tau zoo	Txuj kev ua tau zoo (O Tsawg dua lossis sib npaug rau {{0}}}.3 feem pua , N Tsawg dua lossis sib npaug rau 0.007 feem pua , σ=451617MPa, σ0.2 Ntau dua los yog sib npaug rau 343MPa, δ Ntau dua lossis sib npaug li 18 feem pua).

Titanium Txhaj Moulding txheej txheem

1. Taw qhia

Txawm li cas los xij, qhov teeb meem loj tshaj plaws rau titanium thiab titanium alloys hauv hmoov metallurgy thev naus laus zis yog yuav ua li cas txo lossis zam qhov tshwm sim ntawm oxidation. Raws li kev soj ntsuam ntawm tus qauv tsim dawb lub zog-kub daim duab ntawm oxides kos los ntawm Gibbs Free Zog, Yog tias koj xav rov qab oxidized titanium los yog titanium alloy rau hlau, tus nqi koj them yog siab heev thiab tsis nyob rau hauv txoj kab nrog cov txiaj ntsig kev lag luam. Qhov no kuj yog qhov tsis zoo ntawm titanium thiab titanium alloys hauv cov txheej txheem hmoov metallurgy. Piv nrog cov khoom siv hlau, lawv poob lawv cov nqi ua kom zoo dua. Nws tsis yog qhov xav tsis thoob tias qhov zoo ntawm titanium thiab titanium alloys hauv kev ua cov khoom lag luam ib txwm muaj ntau dua li cov hmoov hlau metallurgy, uas yog thawj zaug hmoov metallurgy cov kws kho mob yuav tsum paub.

2. Cov ntsiab lus kom nco ntsoov

Yuav kom ua tiav cov hmoov txhaj tshuaj molding khoom ntawm titanium thiab titanium alloys, nws yuav tsum ua raws li hauv qab no:

● Txhawm rau tswj cov pa oxygen ntawm cov hmoov pib, cov pa oxygen ntawm cov hmoov yuav tsum tau tswj qis dua 3000 ppm, nyiam dua tsawg dua 1000 ppm; tsuas yog cov hmoov uas muaj cov pa oxygen tsawg tuaj yeem tsim cov khoom zoo.

● Kev ceev faj yuav tsum tau them rau qhov muaj feem cuam tshuam nrog cov pa oxygen thaum lub sijhawm ua haujlwm, cov hmoov sib tov thiab cov ntaub ntawv yuav tsum tau ua nyob rau hauv ib qho chaw tiv thaiv, kev txhaj tshuaj molding yuav tsum txo qis cua sov thiab tuav lub sij hawm, thiab cov txheej txheem degreasing yuav tsum siv txo cov roj tiv thaiv. los yog hloov mus rau txo Oxalic acid degreasing, nqus tsev los yog tiv thaiv huab cua sintering tam sim ntawd tom qab degreasing;

●Qhov tsim ntawm sintering setter thiab kev txhawb nqa system siv zirconia daim hlau uas tsis yooj yim robbed ntawm oxygen los ntawm titanium, thiab me me daim txhuam cev titanium sacrificial decorations los pab txo cov pa oxygen nyob rau hauv lub sintering system;

● Ntxiv cov pa oxygen-robbing Cheebtsam, xws li magnesium, rau cov khoom siv hmoov, tab sis qhov no yuav ua rau muaj kev sib txawv ntawm cov titanium thiab titanium alloys, thiab lub zog ntawm titanium thiab titanium alloys yuav deteriorate tom qab sintering.

2.1 Xaiv cov hmoov raw khoom

Kev siv cov hmoov uas tsis tshua muaj oxygen yog thawj qhov kev xaiv rau kev txhaj tshuaj molding ntawm titanium thiab titanium alloys, uas txhais tau hais tias nws yog qhov tsim nyog los siv cov hmoov kheej kheej ntawm cov roj atomization txoj kev. Cov roj atomization hmoov yog pressurized thiab txias los ntawm inert gas, thiab cov hmoov hais kuj loj. Thiab puag ncig, cov ntsiab lus ntawm cov pa oxygen yog tsawg, tam sim no, Tus Kws Kho Hniav hauv Tebchaws Meskas thiab Sandvik hauv tebchaws United Kingdom yog cov tseem ceeb, thiab qhov loj me ntawm cov hmoov zoo dua d50=10~ 12um. Cov hmoov me me dhau los yooj yim rau oxidize, thiab cov txheej txheem yog qhov txaus ntshai dua; dej Cov txheej txheem atomization yog zoo heev thiab ntxhib, thiab cov khoom ntawm cov tshuab crushing yog loj heev, uas tsis haum rau kev txhaj tshuaj molding txheej txheem; Lwm lub tsev kawm ntawv ntawm kev xav txhawb kev siv cov titanium hydride hmoov kom tshem tawm cov hydrogen, thiab lub zog siab xws li plasma crushing rau puag ncig cov hmoov, txawm hais tias tus nqi ntawm cov khoom siv raw yog siab heev. Tsawg, tab sis patent kev tsis sib haum xeeb thiab kev nqis peev hauv cov cuab yeej tswj tau siab heev, thiab nws tseem tsis tau nrov.

2.2 Binder formulation

Muaj ob hom kev pub mis rau kev sib xyaw titanium thiab titanium alloys. Nws tau pom zoo tias cov lus hauv qab no 1 qhia tau hais tias tus qauv piv tau zoo dua nyob rau hauv qhov sib txawv ntawm qhov sib piv 1.166 ~ 1.220. Cov formulations yog tag nrho cov pej xeem muaj nyob rau hauv lub lag luam.

Table 1. Formula deployment table ntawm titanium thiab titanium alloys

M: B (Volume ratio)	Hlau ntim piv		Binder volume ratio
OSF=1.166 (Min.)	63 vol ib		37 vol ib
OSF=1.220 (Max.)	55 vol ib		45 vol ib
Feedstock system	Wax puag/Weight ratio		POM base/Weight ratio
Major muab tub lim	PW/PE Wax	55 wt ib	POM	85 wt ib
HT Skelton	PP / PE	42 wt ib	PP / PE	12 wt%
NWS Skelton	EVA	2 wt% ua	EVA	2 wt% ua
Dispersant	EBS	0.5 wt feem pua	EBS	0.5 wt feem pua
Lubricant / Activator	SA	0.5 wt feem pua	SA	0.5 wt feem pua
Kev piav qhia ntawm Polymer Abbreviations PW=Paraffin Wax POM= Polyformaldehyde thiab/los yog Acetaln Resins . PP=Polypropylene PE=Polyethylene EVA=Ethylene Vinyl Acetate EBS=NN' Ethylene Bis Stearamide SA=Stearic acid

Vim yog oxidation ntawm titanium thiab titanium alloys, nws raug pom zoo tias qhov ntim ntawm cov hlau nyob rau hauv tus qauv piv yuav tsum tsis txhob siab tshaj 63 feem pua kom tsis txhob muaj kev sib txhuam ntawm cov hmoov thaum pub mis thiab txhaj tshuaj molding. Thaum qhov kev sib txhuam kub siab dhau lawm, qhov ua tau ntawm oxidation yuav nce.

2.3 Kev ceev faj rau kev pub mis thiab sib tov

Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev tswj hwm cov khoom siv sib txuas thiab kev tswj qhov kub thiab txias ntawm cov khoom noj sib xyaw, thov mus saib cov lus piav qhia hauv Table 2. Cov lus pom zoo ntawm kev sib xyaw rau ob qho tib si pub. Nco ntsoov tias cov pa oxygen yuav tsum raug cais tawm hauv qhov chaw tiv thaiv thaum lub sij hawm sib tov, thiab tag nrho cov khoom siv polymer los yog hmoov yuav tsum tau qhuav kom tsis txhob muaj cov dej noo, cov khoom qis molecular xws li cov quav ciab thiab stearic acid uas nyuaj rau qhuav, nws pom zoo Tshem tawm cov dej noo los ntawm lub tshuab nqus tsev kub.

Table 2. Pom zoo cov txheej txheem sib xyaw rau cov khoom noj.

Wax puag txheej txheem	degree	tuav feeb	RPM	P.G.
Pre-heat thiab de-dej	105	20	5	N2
Tsawg cov ntaub ntawv polymer	105	20	10	N2
Cov ntaub ntawv tseem ceeb ntawm kev nkag	120	20	10	N2
Skeleton polymer input	150	20	10	N2
Siab thiab sib tov	160	40	10~15	N2
Ua kom txias	130	20	10	N2
Yas puag txheej txheem	degree	tuav feeb	RPM	P.G.
Pre-heat thiab de-dej	105	20	5	N2
Tsawg cov ntaub ntawv polymer	105	20	15	N2
Skeleton polymer thiab loj muab tub lim tswv yim	190	20	15	N2
Siab thiab sib tov	200	20	15~20	N2
Ua kom txias	165	40	10	N2
.G.=Kev tiv thaiv Gas

3. Cov txheej txheem tseem ceeb

Thaum pub mis tiav kom txog thaum txhaj tshuaj molding, qhov no yog lub xeev zoo tshaj plaws ntawm tag nrho cov hmoov, thiab nws tuaj yeem raug rau saum huab cua yam tsis muaj kev puas tsuaj, tab sis thaum lub sij hawm cua sov ntawm cov txheej txheem txhaj tshuaj, kev saib xyuas yuav tsum tsis txhob cia cov khoom noj. nyob hauv lub thoob rau ntev heev. Thaum cov txheej txheem kev txhaj tshuaj yas hauv paus tau tawg thiab lub tshuab hloov kho, qhov kub ntawm lub nozzle thiab qhov kub siab tshaj plaws yuav tsum tau teem rau ntawm 10 feeb yam tsis ua hauj lwm, thiab qhov kub thiab txias yuav tsum raug txiav tawm kom qhov kub ntawm qhov pub mis qis dua 150. degree.

Tom qab txhaj tshuaj molding ntawm titanium thiab titanium alloys, lub cev ntsuab tsis txawv ntawm kev pub mis ntawm cov khoom siv hlau, thiab tuaj yeem muab tso rau hauv huab cua. Tom qab cov titanium thiab titanium alloy hmoov yog coated nrog cov ntaub ntawv, lub binder tuaj yeem thaiv cov pa oxygen hauv huab cua. Tom qab ntawd tom qab degreasing, txawm tias nws yog hnyav degreasing lossis txo qis oxalic acid degreasing (nws tsis pom zoo kom siv cov oxidative nitric acid degreasing muaj zog), ua ntej ntawm tag nrho cov, xyuas kom meej tias qhov kub thiab txias tawm hauv lub cub tawg yog qis dua 50 degree kom paub meej tias oxidation puas. tsis tshwm sim. Degreasing Lub tiav xim av billet yog ntxeem tau thiab yooj yim heev rau react nrog oxygen nyob rau hauv cov huab cua, thov xyuam xim rau. Lub sij hawm luv dua cov xim av xim av muab tso rau sab nraud, qhov zoo dua, thiab nkag mus rau hauv qhov system sintering kom sai li sai tau.

Qhov tsim ntawm sintered setter thiab sintering lub thawv yog qhov tseem ceeb. Vim muaj cov pa oxygen siab ntawm titanium thiab titanium alloys, lawv tuaj yeem ntes cov pa hauv alumina ntawm qhov kub thiab txias. Yog li ntawd, nws raug pom zoo kom siv zirconia daim hlau rau ceramic setters, tab sis tsis txhob xaiv cov ntaub ntawv carbonized los yog nitrided. Titanium thiab titanium alloys kuj nyiam carbon thiab nitrogen. Nyob rau hauv yav dhau los sintering kev, muab sponge titanium nyob rau hauv lub sintering lub thawv raws li ib tug sacrificial block rau grabbing oxygen yog zoo tab sis txo cov efficiency ntawm lub sintering rauv, thiab siv ib tug ntau ntawm daim txhuam cev titanium txhua lub sij hawm, nyob qhov chaw thiab siv tshav kub yog tag nrho cov tsis zoo.

Cov saum toj no yog cov kev paub sib koom hauv kev tsim cov titanium thiab titanium alloy hmoov txhaj tshuaj molding. Cov neeg ua haujlwm yuav tsum ceev faj. Cov hmoov zoo ntawm titanium ntshiab yog qhov txaus ntshai heev. Cov hlau uas tsis yog-ferrous (qhov ntom<4.5g .c.)="" all="" have="" the="" risk="" of="" dust="" explosion.="" although="" titanium="" and="" titanium="" alloys="" have="" been="" regarded="" as="" the="" least="" active="" non-ferrous="">

Hlau Txhaj Moulding txheej txheem

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