Yuav ua li cas txo cov nqi tsim khoom thiab kev ua haujlwm ntawm kev lag luam ntshiab titanium

Titanium thiab titanium alloys muaj dav daim ntawv thov kev cia siab nyob rau hauv cov tub rog, pej xeem thiab lwm yam teb vim lawv tsis tshua muaj ceev, siab tshwj xeeb zog, siab flexural zog piv, zoo yas toughness, zoo corrosion kuj, thiab lwm yam. ib qho kev cuam tshuam ncaj qha rau txoj kev loj hlob ntawm cov teb no thiab qib kev txhim kho. Lub bottleneck hauv kev nthuav dav titanium alloy kev lag luam yog tias titanium extraction, melting thiab machining yog qhov nyuaj, uas ua rau cov nqi ntau lawm. Tus nqi tsim khoom ntawm titanium ingot yog kwv yees li 30 npaug ntawm tib qhov hnyav hlau ingot, 6 npaug ntawm txhuas ingot, uas tus nqi ntawm titanium daim txhuam cev tsim los ntawm ore mus rau magnesium txo yog li 20 npaug ntawm cov khoom ntawm tib qhov hnyav. hlau. Tam sim no, tus nqi ntawm txhua tuj ntawm kev lag luam ntshiab titanium yog li ntawm 7.5 ~ 10 $ / kg, thaum cov nqi tsim khoom ntawm aerospace titanium alloy yog siab li 40 $ / kg.

Yog li ntawd, tus nqi txo yog tsuas yog txo tus nqi ntawm kev lag luam ntshiab titanium ntau lawm thiab titanium thiab titanium alloy manufacturing thiab ua cov nqi. Yuav kom txo tau tus nqi ntawm titanium alloys, txawv teb chaws lub zog tsim titanium alloys tsis txiav, tsawg txiav nyob ze-net zoo txheej txheem, hmoov metallurgy tshuab yog ib qho ntawm cov txheej txheem ze-net. Kev tsim cov titanium alloy qhov chaw tam sim no muaj peb txoj hauv kev: ① tsoos forging khoom ua; ② casting; ⑧ hmoov metallurgy. Cov khoom siv nrog forging, nws cov khoom siv zoo heev, tab sis pov tseg, kev ua haujlwm, tus nqi siab, thiab nyuaj kom tau txais cov duab ntawm cov khoom nyuaj; casting tuaj yeem tau txais los ntawm cov duab ntawm cov duab sib txawv lossis cov duab nyob ze ntawm cov khoom, tus nqi qis dua, tab sis cov txheej txheem casting ntawm cov khoom sib cais, loosening, shrinkage ntawm solenoids thiab lwm yam tsis xws luag yog nyuaj rau zam, cov khoom siv. kev ua haujlwm tsawg. Cov hmoov hlau metallurgy thev naus laus zis ntawm titanium alloy kov yeej qhov tsis txaus ntawm ob txoj kev no, thiab tib lub sijhawm muaj lawv qhov zoo. Yog li ntawd, cov kws tshawb fawb hauv tsev thiab txawv teb chaws tau ua haujlwm ntau ntawm kev npaj cov titanium alloy los ntawm hmoov metallurgy technology. Hauv daim ntawv no, ntau hom hmoov metallurgy thev naus laus zis rau kev npaj cov titanium alloys ua haujlwm siab thiab lawv cov ntawv thov tau tshawb fawb thiab tsim tawm txawv teb chaws nyob rau xyoo tas los no, thiab lawv cov ntawv thov tau qhia luv luv.1 Cov hmoov metallurgy tshiab npaj tshuab 1.1 Hlau txhaj tshuaj molding ( MlM)

Hlau hmoov txhaj tshuaj molding (MIM) technology, raws li ib tug nyob ze-net forming technology, muaj peev xwm npaj high-zoo, high-precision complex qhov chaw, uas yog xam tau tias yog ib tug ntawm cov zoo tshaj plaws txoj kev technologies. Kev tsim cov titanium thiab titanium alloy ze-net duab qhov chaw los ntawm MIM txoj kev tuaj yeem txo tus nqi ua haujlwm. Nws yog kwv yees tias tam sim no cov khoom ntim ntawm titanium MIM qhov chaw thoob ntiaj teb yog 3-5t ib hlis. Nrog rau kev txhim kho cov txheej txheem ntawm kev npaj titanium hmoov thiab txo cov nqi ntawm cov hmoov -, qhov ntim ntawm titanium alloy txhaj tshuaj molding qhov chaw yog nyob rau hauv ib qho kev loj hlob. Nyiv thawj MIM thev naus laus zis los tsim Ti a 4wt% Fe alloy kev ua si cleats. Tam sim no qhov loj tshaj plaws titanium hmoov txhaj tshuaj molding cog yog Nyiv Injex, txhua hli ntau lawm txog 2 ~ 3 t. Titanium MIM cov khoom muaj nyob rau hauv lub taub hau golf, tsheb, khoom siv kho mob, kev cog hniav thiab saib rooj plaub thiab cov hlua thiab lwm yam ntawm daim ntawv thov. Titanium alloy rooj plaub ua los ntawm Hitachi hlau Precision tuam txhab thiab Casio Computer tuam txhab nyob rau hauv Nyiv yeej lub MIM Award of Merit ntawm lub International Powder Metallurgy Conference nyob rau hauv 1999, thiab lub moos no tseem tuaj yeem ua haujlwm ib txwm nyob ntawm qhov tob ntawm 200m. Qee lub tsev kawm ntawv Nyij Pooj siv Sumitomo Sitix aerosolized kheej kheej titanium hmoov, los ntawm MIM txoj kev kom tau txais Ti 6Al 4V, Ti 12Mo, Ti 5Co alloy. Cov khoom siv yog zoo dua li cov xwm txheej zoo ib yam nrog cov txheej txheem hmoov hlau metallurgy uas ua los ntawm cov khoom siv, tag nrho mus txog tib lub ntsiab lus ntawm melting thiab forging cov ntaub ntawv qib. Tsis tas li ntawd, ib lub tuam txhab Nyij Pooj tau siv txoj kev txhaj tshuaj molding los tsim cov titanium-hlau alloy qhov chaw nrog cov duab nyuaj, xws li cov ntsia hlau ib leeg ntawm kev khiav thiab cov khau khiav. Txoj kev yuav yog titanium-hlau alloy (Ti a 5wt% Fe) hmoov thiab organic binder mix, txhaj molding ntawm 196MPa siab, nyob rau hauv 550 degrees degreasing, thiab ces nyob rau hauv lub 1000-1400 degrees, 1.33 × 1O Pa tej yam kev mob rau lub nqus tsev vacuum. sintering. Piv nrog rau molybdenum alloy spikes, titanium-hlau alloy spikes ua nyob rau hauv txoj kev no tau txhim kho hnav tsis kam thiab cuam tshuam tsis kam. Thiab qhov hnyav yog txo los ntawm 45%.