Lub tshuab nqus tsev tuag casting tshuab rau txhuas thiab titanium alloy profiles

Aluminium titanium alloy profile uas yog nyob rau hauv kev lag luam ntshiab titanium alloy ntsiab ntxiv los txhim kho lub zog ntawm titanium, titanium alloy thermal conductivity tsawg, tsuas yog steel 1/4, txhuas 1/13, tooj liab 1/25. titanium alloy tuaj yeem muab faib ua peb hom titanium alloys: titanium alloy, b titanium alloy thiab a + b titanium alloy. ab titanium alloy yog ua los ntawm a thiab b biphasic muaj pes tsawg leeg, hom alloy lub koom haum no ruaj khov, kub deformation zog, toughness, plasticity zoo dua, thiab tuaj yeem quenched, Kev laus kho, kom cov alloy muaj zog. Cov yam ntxwv ntawm kev ua haujlwm ntawm titanium alloys feem ntau tshwm sim hauv:
1. Muaj zog tshwj xeeb. Aluminium thiab titanium alloy profile ntom yog me me (4.4kg / dm3) lub teeb yuag, tab sis nws lub zog tshwj xeeb yog ntau dua li cov hlau muaj zog heev.
2. Siab thermal zog. Aluminium thiab titanium alloy profiles yog thermally ruaj khov, thiab lawv lub zog yog li 10 npaug siab dua li ntawm aluminium alloy nyob rau hauv cov xwm txheej ntawm 300-500 degree .
3. Muaj tshuaj lom neeg ua haujlwm siab. Titanium tuaj yeem muaj tshuaj lom neeg muaj zog nrog oxygen, nitrogen, carbon monoxide, dej vapor thiab lwm yam khoom hauv huab cua, tsim TiC thiab TiN hardened txheej ntawm qhov chaw.
4. Tsis zoo thermal conductivity. Tsis zoo thermal conductivity ntawm titanium alloy, titanium alloy TC4 ntawm 200 degree thermal conductivity l=16.8W/m - degree, thermal conductivity yog 0.036 card / cm - sec - degree.
Raws li daim ntawv thov ntawm titanium castings hauv kev lag luam aerospace txuas ntxiv mus, tau cog lus los nrhiav cov txheej txheem tsim khoom uas tuaj yeem txo cov nqi tsim khoom los hloov cov khoom siv titanium siab, tshwj xeeb tshaj yog nyob rau niaj hnub kev lag luam kev lag luam hauv ntiaj teb. Yog li ntawd, tus nqi qis dua titanium castings nrog cov khoom siv kho tshuab zoo ib yam li cov forgings tuaj yeem hloov tsis tau tsuas yog cov khoom siv titanium uas twb muaj lawm, tab sis kuj yog cov khoom ua los ntawm lwm cov ntaub ntawv.VDC thev naus laus zis tau tsim los tsim cov khoom zoo, tus nqi qis titanium. castings. Cov ntawv thov rau nws cov castings muaj xws li aircraft fuselages (xws li bulkheads, brakes, gears, hinges, thiab lwm yam) nrog rau lwm yam aerospace thiab industrial Cheebtsam.
Nqus tuag casting thiab peev casting ntawm Ti-6Al-4V alloy cam khwb cia pas nrig ntawm lub koom haum thiab txhua yam khoom ntawm kev sib piv kev tshawb fawb qhia tau hais tias ob hom cam khwb cia rods nyob rau hauv 899 degree, 103MPa siab, 2h kub isostatic siab kho, thiab tom qab ntawd hauv 834 degree, 2h nqus tsev vacuum annealing, lub tshuab nqus tsev tuag casting rods, cov nplej loj li ntawm 100 μm, cov nplej ntawm txhua qhov kev taw qhia ntawm - qauv Cov nplej loj ntawm cov pwm yaj casting bar yog 750μm; Lub zog ntawm lub tshuab nqus tsev tuag casting khoom (930.79MPa) yog li 12% siab dua li ntawm cov khoom siv yaj pwm casting (827.37MPa), uas yog ze rau lub zog tawm los ntawm forgings thiab dov - annealed qhov chaw (896.32MPa) ; qhov tawg toughness ntawm lub tshuab nqus tsev tuag casting Kq yog 142.8 MPa; nyob ze rau lub melt pwm castings, tab sis siab tshaj tus nqi ntawm 87.9 MPa / m rau annealed forgings.

Tuag casting tshuab rau zus tau tej cov txhuas, magnesium, zinc, tooj liab-raws li alloy castings, nyob rau hauv machinery manufacturing kev lag luam daim ntawv thov tau ntau xyoo ntawm keeb kwm. Cov tuag castings no yog tsim los ntawm melting hlau nyob rau hauv cov huab cua thiab ces txhaj cov molten hlau rau hauv lub casting pwm nyob rau hauv siab. Castings rau net zoo los yog nyob ze net zoo, casting me ntsis tom qab kev kho mob los yog kev ua yuav tau txais qhov kawg cov duab ntawm ib feem, cov txheej txheem txheej txheem yog luv luv, los ntawm cov hlau molten mus rau lub net zoo ntawm ib feem ntawm lub sij hawm yog feem ntau tsawg tshaj li 15. s. Ntawm titanium tuag casting tshuab yuav tsum tau thiab cov tsoos alloy yog sib txawv kiag li, qhov tseem ceeb tshaj plaws yog cov hlau melting chamber thiab casting pwm kab noj hniav yuav tsum muaj ib tug siab nqus tsev vacuum, los yog lwm yam lub casting ntawm cov pa oxygen cov ntsiab lus yuav nce, tsis txaus siab. cov aviation alloys ntawm cov txheej txheem technical. Nqus tuag-casting titanium casting txoj kev thiab txheej txheem tuag-casting, tsuas yog yaj chav / pwm kab noj hniav lub sij hawm thiab titanium alloy melting lub sij hawm yuav tsum tau ncua. Nqus tuag casting txheej txheem siv titanium alloy cais tus nqi, induction plhaub melting. Qhov no yog piv nrog txoj kev nruam nruam ntawm tuag casting txhuas, nws lub sij hawm melting kom haus 5min ntxiv.
Piv nrog rau lwm txoj kev xws li peev casting txoj kev, lub tshuab nqus tsev tuag casting titanium castings txheej txheem yog yooj yim, yog li tus nqi feem ntau qis dua. Lub tshuab nqus tsev tuag casting txheej txheem tsis tas yuav tshem tawm cov quav ciab, plhaub thiab tshuaj ntxuav, cov txheej txheem yuav txo tau ze li ib nrab, piv rau cov peev txheej casting lossis forging txheej txheem, tuaj yeem txuag tau li 30% ntawm tus nqi. Vim tias lub tshuab nqus tsev tuag casting pwm ncaj qha nrog cov molten titanium kua sib cuag, nws cov kev pab cuam lub neej tau luv luv, piv nrog cov peev txheej casting txheej txheem ntawm nws cov pwm ib feem ntawm cov nqi yog loj dua. Tam sim no, lub tshuab nqus tsev tuag-casting txoj kev tsuas tuaj yeem nrum qee qhov tag nrho, ib sab, cov duab yooj yim ntawm titanium castings, thiab pwm casting tuaj yeem casting zoo yog complex castings, hollow castings. Tsis tas li ntawd, lub tshuab nqus tsev tuag casting txhua zaus qhov siab tshaj plaws casting tsuas yog 12 daim, casting qhov siab tshaj plaws ntawm 61cmx46cmx25cm, qhov siab tshaj plaws ntawm 18kg.