Cov nyhuv ntawm titanium hmoov txhaj tshuaj molding sintering txheej txheem ntawm kev ua tau zoo

Hlau hmoov sinteredntxeem taucov ntaub ntawv yog ua los ntawm hlau los yog alloy hmoov raws li raw cov ntaub ntawv thiab yog tsim thiab sintered nyob rau hauv high kub. Lawv yog cov khoom ntxeem tau nrog cov qauv nruj.

Cov txheej txheem ntau lawm: kev tshuaj ntsuam - isostatic nias - lub tshuab nqus tsev kub sintering

Cov yam ntxwv ntawm cov qauv: Cov khoom siv muaj ntau qhov sib txuas lossis ib nrab qhov pores. Cov qauv pore yog tsim los ntawm stacking tsis tu ncua thiab tsis tu ncua hmoov hais. Qhov loj thiab kev faib tawm ntawm qhov pores thiab qhov loj ntawm qhov porosity tuaj yeem hloov kho raws li cov hmoov particle loj ua ke thiab txheej txheem kev npaj. Ua tau raws li cov neeg siv khoom xav tau tiag tiag.

Cov khoom zoo: zoo permeability, tswj qhov pore loj thiab pores, ruaj khov zoo, siab pom tseeb, hnav tsis kam, zoo txhua yam khoom, zoo thermal conductivity, kub tsis kam, thiab tshav kub dissipation zog, thiab tuaj yeem rov qab ntxuav thiab siv ntau zaus.

Cov yam ntxwv ua haujlwm ntawm titanium sintered ntxeem tau cov ntaub ntawv:

1. 1) Uniform pore txoj kab uas hla, ruaj khov pores, thiab siab sib cais efficiency.

1. 2) Cov porosity siab, me me pom tsis kam thiab kev nkag siab zoo.

1. 3) Zoo tshuaj stability, acid thiab alkali corrosion kuj, thiab anti-oxidation zog.

1. 4) Cov qauv morphological ruaj khov, tsis muaj cov khoom poob, thiab ua tau raws li qhov yuav tsum tau ua ntawm kev tu cev thiab tshuaj GMP.

1. 5) Zoo mechanical zog, tsis tshua muaj siab sib txawv thiab loj txaus tus nqi.

1. 6) Nws muaj zog tiv thaiv kab mob thiab tsis cuam tshuam nrog cov kab mob.

1. 7) Nws tuaj yeem rov tsim dua hauv online, yooj yim los ntxuav thiab muaj lub neej ua haujlwm ntev.

1. 8) Biocompatibility zoo heev, tuaj yeem siv dav hauv kev lag luam lom neeg, zaub mov, tshuaj thiab kev kho mob.

1. 9) Zoo heev electromagnetic yoj tiv thaiv kev ua tau zoo.

1. 10) Cov yam ntxwv zoo damping thiab cuam tshuam tsis kam.

Sintering yog ib qho ntawm cov txheej txheem tseem ceeb tshaj plaws hauv cov txheej txheemMIM process. Nws tsis tsuas yog tshem tawm cov residual binder tab sis kuj tshem tawm cov pores ntawm cov hmoov hais, ua rauMIM khoomtag nrho ntom los yog yuav luag tag nrho densified. Covsintering ntawm titaniumalloy xav tau qhov kub thiab txias. Ib puag ncig, cov txheej txheem sintering yuav tsum tau tiv thaiv nrog argon roj ntau li ntau tau. Lub sij hawm sintering nyob rau hauv qhov kev xeem no yog teem kom qhov kub thiab txias tsis tu ncua rau 120 feeb, thiab qhov siab tshaj plaws kub yog 1220 ℃ , 1240 ℃ , 1250 ℃ , 1270 ℃ , 1290 ℃ , feem rau TC4 kos qhov chaw thiab puag ncig. Cov khoom seem yog sintered.

Sintering txheej txheem ntawm TC4 tensile qhov chaw

Sintering txheej txheem ntawm ncig qhov chaw

Los ntawm cov txheej txheem sintering ntawm lub voj voog, nws tuaj yeem pom tau hais tias thaum TC4 kav ntev li 120 feeb, qhov ntom ntom dua tuaj yeem tau txais ntawm 1250 ° C, thiab qhov ntom ntom me ntsis thaum qhov kub nce. Qhov no yog vim cov qoob loo loj hlob tshwm sim ntawm qhov kub thiab txias heev. Qhov sib txawv ntawm cov ciam teb kuj dhau los ua qhov loj dua, uas tseem ua rau lub zog tawm los ntawm cov qauv tensile qhov qis dua 1250 ° C tom qab qhov kub thiab txias.

TC4 metallographic daim duab ntawm 1250 ℃

Sintered TC4 puag ncig qhov chaw

Yuav kom nkag siab txog kev sib raug zoo ntawm qhov sib txawv ntawm qhov kub thiab txias thiab tuav lub sij hawm thiab TC4 sintering densification, peb xaiv 1240 ° C, 1250 ° C thiab 1270 ° C los ua qhov kev sim raws li qhia hauv qab no. Qhov chaw sintering yog tag nrho cov roj argon ib puag ncig.

Lub sintering cua yog argon

Kev ua cov ntaub ntawv thiab kev txheeb xyuas

Raws li cov ntaub ntawv ceev ntawm cov qauv tom qab sintering, nws tsis yog qhov nyuaj kom pom tias qhov ceev tau los ntawm kev tuav qhov kub ntawm 1250 ° C rau 120-180 feeb yog siab dua qhov tau txais los ntawm lwm cov txheej txheem. Raws li kev sib raug zoo ntawm cov txheej txheem sintering ntawm TC4 kos qhov chaw thiab sintered TC4 puag ncig qhov chaw, peb kuj txiav txim siab tias qhov ceev yog siab dua qhov tau los ntawm lwm cov txheej txheem. Densification thiab cov txiaj ntsig lub zog zoo ib yam, yog li cov khoom tau txais los ntawm kev tuav qhov kub ntawm 1250 ° C rau 120min ~ 180min yog qhov siab tshaj plaws; Qhov no yog vim qhov kub thiab txias heev thiab lub sijhawm tuav tsis tau txhim kho titanium alloy sintering txheej txheem. Titanium alloy crystals yog optimally densified. Ib yam li ntawd, tsis tshua muaj kub thiab txuag hluav taws xob mus ntev yuav ua rau cov hmoov av tsav lub zog yuav tsum tau noj tsis tu ncua vim qhov qeeb diffusion ntawm cov ciam teb. Thaum lub sij hawm txav thiab diffusion txheej txheem ntawm cov ciam teb, zoo sib tshooj thiab plam ntawm cov siv lead ua lattice tsis tuaj yeem ua tiav. Nyob rau hauv txoj kev no, tseem muaj qee qhov khoob hauv uas tsis tuaj yeem tshem tawm, ua rau nws tsis tuaj yeem ua tiav qhov ntom ntom zoo dua.

nyob rau hauv xaus

Cov txheej txheem kev lag luam ntawm MIM titanium alloy yog qhov nyuaj, thiab muaj ntau yam cuam tshuam rau qhov kawg densification thiab txhua yam khoom ntawm cov khoom. Raws li cov kev sim no, tom qab kev txiav txim siab nruj ntawm cov khoom ntom thiab cov neeg kho tshuab, peb tau siv HP lub tshuab nqus hp siab ua kom tsis tu ncua thaum 1250 ° C rau 120 feeb. Qhov no tso cai rau TC4 kom muaj qhov ceev dua thiab tau txais lub zog siab tshaj plaws, ua rau txoj hauv kev rau kev lag luam ntawm MIM-TC4.