Poob-Wax Casting Ntawm Titanium Alloy Rau Automotive Rocker Arms

1. Pwm Tsim thiab Tsim Khoom: Raws li kev tsim qauv kos duab ntawm lub tsheb rocker caj npab, 3D qauv ntawm pwm yog tsim los ntawm kev siv computer-aided design (CAD) software. Tom qab ntawd, CNC machining tshuab yog siv los tsim cov pwm. Lub precision thiab nto zoo ntawm cov pwm ncaj qha cuam tshuam qhov zoo ntawm cov qauv siv quav ciab; Yog li ntawd, nruj tswj ntawm pwm machining precision yog tsim nyog.

2. Wax Model Txhaj Tshuaj: Cov khoom siv quav ciab yog rhuab mus rau lub xeev molten, feem ntau tswj ntawm 60-70 degree. Tom qab ntawd, lub tshuab txhaj tshuaj molding yog siv los txhaj cov khoom siv molten rau hauv cov pwm kab noj hniav, tswj lub siab rau ib lub sijhawm kom tso cai rau cov khoom siv quav ciab puv tag nrho cov kab noj hniav. Kev txhaj tshuaj siab thiab lub sijhawm yuav tsum tau hloov kho raws li cov khoom siv ntawm cov khoom siv quav ciab thiab cov duab ntawm lub caj npab rocker kom paub meej qhov raug thiab qhov zoo ntawm cov qauv siv quav ciab.

3. Wax Model Finishing: Kev txhaj tshuaj- cov qauv siv quav ciab raug tshem tawm ntawm cov pwm, thiab nws qhov chaw tiav lawm. Tshem tawm ntau dhau flash, burrs, thiab lwm yam tsis xws luag, thiab xyuas tias qhov ntev thiab cov duab ntawm cov qauv siv quav ciab ua tau raws li qhov yuav tsum tau ua. Rau cov khoom uas xav tau kev ua haujlwm siab, kev ua haujlwm ntxiv thiab polishing yuav tsim nyog.

4. Wax Model Assembly: Txhawm rau txhim kho kev ua haujlwm zoo, ntau cov qauv siv quav ciab feem ntau ua ke los tsim cov qauv siv quav ciab. Txoj kev sib dhos yuav tsum tau tsim raws li cov duab ntawm lub pob zeb rocker caj npab thiab cov txheej txheem casting, kom ntseeg tau tias qhov sib nrug thiab kev sib txuas ntawm cov qauv siv quav ciab yog tsim nyog los pab txhawb kev tsim cov plhaub tom ntej thiab nchuav.

1. Txheej: Raus cov qauv siv quav ciab los ua ke hauv cov txheej txheem kom sib npaug ntawm qhov chaw. Cov txheej txheej feem ntau yog tsim los ntawm cov ntaub ntawv refractory (xws li silica xuab zeb, corundum, thiab lwm yam) thiab cov ntaub ntawv (xws li iav dej, silica sol, thiab lwm yam). Lub thickness thiab uniformity ntawm lub txheej muaj ib qho tseem ceeb rau qhov zoo ntawm lub plhaub; Feem ntau yuav tsum muaj ntau txheej txheej, thiab ziab yog tsim nyog tom qab txhua txheej.

2. Xuab zeb Sprinkling: Tom qab txheej, tso cov qauv siv quav ciab rau hauv cov xuab zeb sprinkling ntaus ntawv kom nphoo ib txheej ntawm cov xuab zeb refractory rau saum npoo. Qhov loj me me thiab cov khoom siv ntawm cov xuab zeb yuav tsum raug xaiv raws li qhov xav tau ntawm lub plhaub refractory. Feem ntau, cov xuab zeb yog siv ntau zaus, los ntawm ntxhib mus rau cov xuab zeb zoo, los tsim cov txheej txheem sib txawv ntawm lub plhaub. Lub hom phiaj ntawm kev thov xuab zeb yog txhawm rau ua kom lub zog thiab permeability ntawm lub plhaub.

3. Drying thiab Hardening: Tom qab txheej thiab xuab zeb thov, lub plhaub yuav tsum tau ua kom qhuav thiab tawv tawv kom cia cov ntaub ntawv los ua cov tshuaj lom neeg, sib txuas cov ntaub ntawv refractory ua ke los ua ib lub plhaub. Cov txheej txheem ziab thiab hardening tsis (xws li kub, av noo, thiab lub sijhawm) yuav tsum tau hloov kho raws li hom kev khi thiab lub thickness ntawm lub plhaub. Feem ntau, cov plhaub siv silica sol binders yuav tsum tau siv sij hawm ntev dua thiab yuav tsum tau ziab hauv ib puag ncig nrog cov av qis.

4. Dewaxing: Lub plhaub qhuav thiab tawv tawv yog muab tso rau hauv cov khoom siv dewaxing, qhov chaw cua sov melts tus qauv siv quav ciab, ua rau nws ntws tawm ntawm lub plhaub. Muaj ntau txoj hauv kev dewaxing, feem ntau suav nrog dej kub dewaxing, chav dewaxing, thiab microwave dewaxing. Thaum lub sij hawm dewaxing, qhov kub thiab lub sij hawm yuav tsum tau ua tib zoo tswj kom ntseeg tau tias cov qauv siv quav ciab yog yaj tag thiab tshem tawm, thaum tsis txhob muaj kev puas tsuaj rau lub plhaub.

5. Kev tua hluav taws: Tom qab dewaxing, lub plhaub pwm yuav tsum raug rho tawm haujlwm kom tshem tawm cov khoom seem ntawm cov dej noo thiab cov organic teeb meem, txhim kho nws lub zog thiab refractoriness. Kev tua hluav taws kub thiab lub sijhawm yuav tsum tau hloov kho raws li cov khoom siv thiab cov qauv ntawm lub plhaub pwm, feem ntau ntawm qhov kub ntawm 800-1200℃rau ob peb teev. Lub plhaub raug rho tawm haujlwm yuav tsum muaj lub zog txaus thiab permeability los tiv thaiv cov dej kub ntawm titanium alloy kua.

1. Titanium Alloy Melting: titanium alloy raw khoom yog melted siv lub tshuab nqus tsev induction melting rauv. Cov titanium alloy raw khoom yog muab tso rau hauv ib lub crucible thiab rhuab mus rau lub molten lub xeev nyob rau hauv lub nqus tsev vacuum. Thaum lub sij hawm melting txheej txheem, lub cub tawg kub, lub tshuab nqus tsev theem, thiab melting lub sij hawm yuav tsum tau nruj me ntsis tswj los xyuas kom meej lub uniform chemical muaj pes tsawg leeg ntawm titanium alloy thiab txo impurity cov ntsiab lus. Nyob rau tib lub sijhawm, txhawm rau tiv thaiv cov tshuaj tiv thaiv ntawm titanium alloy thiab crucible thaum lub sij hawm melting, cov ntaub ntawv tshwj xeeb crucible (xws li yttrium oxide crucibles) feem ntau yog siv.

2. Pouring: Lub molten titanium alloy yog pauv mus rau lub rooj vag system ntawm lub ladle thiab ces sai sai poured rau hauv kab noj hniav ntawm lub puab plhaub. Cov txheej txheem pouring yuav tsum tau ua nyob rau hauv ib tug tej yam nqus tsev vacuum los yog kev tiv thaiv huab cua los tiv thaiv molten titanium alloy los ntawm reacting nrog oxygen, nitrogen, thiab lwm yam., nyob rau hauv cov huab cua, uas ua rau muaj tsis xws luag xws li porosity thiab inclusions. Lub pouring kub thiab ceev yuav tsum tau kho raws li cov khoom ntawm titanium alloy thiab cov duab ntawm lub rocker caj npab kom paub meej tias cov molten titanium alloy nyob rau hauv tag nrho cov kab noj hniav, thaum tsis txhob muaj qhov tsis xws luag xws li tsis tiav filling thiab txias kaw.

1. Lub plhaub tshem tawm: Tom qab cov titanium alloy casting tau txias thiab khov, lub plhaub raug tshem tawm los ntawm kev siv tshuab (xws li kev vibration sandblasting, sandblasting, thiab lwm yam). Kev saib xyuas yuav tsum tau ua kom tsis txhob ua kom puas lub casting thaum lub plhaub tshem tawm.

2. Kev txiav lub rooj vag: Lub casting yog sib cais los ntawm lub rooj vag system, thiab cov rooj vag ntau dhau thiab risers raug tshem tawm. Qhov chaw txiav qhov rooj yuav tsum yog hauv av thiab ua tiav kom nws qhov chaw du.

3. Kev kho cua sov: txhawm rau txhim kho cov khoom siv ntawm titanium alloy casting, feem ntau yuav tsum tau kho cua sov. Cov txheej txheem kev kho cua sov feem ntau muaj xws li annealing, quenching, thiab tempering. Cov txheej txheem tsis siv rau kev kho cua sov yuav tsum raug xaiv raws li qhov muaj pes tsawg leeg ntawm titanium alloy thiab kev npaj siv cov casting kom tau txais cov khoom siv kho kom zoo.

4. Kev kho deg: Kev kho deg ntawm cov casting suav nrog polishing, passivation, thiab pleev xim. Lub hom phiaj ntawm kev kho saum npoo yog txhawm rau txhim kho qhov zoo ntawm qhov chaw thiab corrosion kuj ntawm cov casting, thaum tseem ua tau raws li qhov yuav tsum tau ua ntawm lub tsheb rocker caj npab.

5. Kev Tshuaj Xyuas Zoo: Kev tshuaj xyuas zoo yog ua los ntawm kev kho tsheb rocker caj npab casting. Cov ntsiab lus tshuaj xyuas suav nrog qhov tseeb qhov tseeb, qhov tseeb, qhov zoo ntawm qhov chaw, thiab cov khoom siv kho tshuab. Feem ntau siv cov kev tshuaj ntsuam xyuas muaj xws li kev sib koom tes ntsuas tshuab (CMM), kev tshuaj ntsuam xyuas metallographic, kuaj hardness, thiab qhov tsis zoo. Tsuas yog cov castings uas dhau kev soj ntsuam nruj tuaj yeem mus rau tom qab sib dhos thiab siv cov theem.

1. Kev Ntsuam Xyuas Kev Sib Tw: Titanium alloys yog cov tshuaj lom neeg muaj zog heev thiab yooj yim ua rau cov pa oxygen thiab nitrogen hauv cov huab cua thaum lub sij hawm siab - kub melting, absorbing roj ntau. Qhov no ua rau muaj qhov tsis xws luag xws li porosity thiab inclusions hauv casting, txo nws cov khoom siv kho tshuab thiab zoo.

2. Kev daws: Siv lub tshuab nqus tsev induction melting tshuab kom muaj lub tshuab nqus tsev siab nyob rau hauv lub cub tawg thaum melting, txo qhov kev sib cuag ntawm titanium alloy thiab cua. Tib lub sijhawm, siv cov khoom zoo - zoo raw khoom thiab tswj cov roj cov ntsiab lus hauv cov ntaub ntawv raw. Tsis tas li ntawd, ntxiv qhov tsim nyog ntawm deoxidizers thiab degassing cov neeg ua haujlwm thaum lub sijhawm yaj tuaj yeem txo cov roj cov ntsiab lus hauv titanium alloy ntxiv.

1. Kev Ntsuam Xyuas Kev Sib Tw: Ntawm qhov kub siab, titanium alloys hnov ​​​​mob chemically nrog cov khoom pwm, tsim cov txheej txheem cuam tshuam cuam tshuam rau qhov zoo ntawm qhov chaw thiab qhov tseeb ntawm qhov casting. Tshwj xeeb tshaj yog thaum siv cov khoom pwm uas muaj silicon, cov tshuaj tiv thaiv ntawm titanium thiab silicon tuaj yeem ua rau muaj qhov tsis xws li xuab zeb adhesion thiab tawg ntawm qhov chaw casting.

2. Kev daws teeb meem: Xaiv cov khoom siv plhaub tsim nyog thiab txheej txheej txheej kom txo tau cov tshuaj lom neeg ntawm lub plhaub thiab cov titanium alloy. Piv txwv li, siv cov ntaub ntawv refractory xws li zircon xuab zeb thiab yttrium oxide ua cov ntaub ntawv txheej txheej ntawm lub plhaub, vim cov ntaub ntawv no muaj cov tshuaj zoo sib xws nrog cov titanium alloy. Ib txhij, ua kev kho tshwj xeeb ntawm lub plhaub, xws li txheej txheej ntawm lub plhaub nrog cov txheej txheem cais kom tsis txhob muaj kev sib cuag ncaj qha ntawm titanium alloy thiab lub plhaub.

1. Cov kev sib tw: Thaum lub sij hawm poob -wax casting, qhov qhov tseeb qhov tseeb ntawm cov castings yog qhov nyuaj rau kev tswj vim muaj yam xws li shrinkage ntawm cov qauv siv quav ciab, qhov nthuav dav thiab shrinkage ntawm lub plhaub, thiab lub solidification shrinkage ntawm titanium alloy. Tshwj xeeb tshaj yog rau complex - zoo li lub tsheb rocker caj npab nrog siab precision yuav tsum, qhov sib txawv ntawm qhov yuav tiv thaiv lawv los ntawm kev sib dhos kom zoo thiab siv nrog lwm yam khoom.

2. Cov kev daws teeb meem: Txo qhov shrinkage tus nqi ntawm cov qauv siv quav ciab los ntawm kev tswj cov txheej txheem txhaj tshuaj tsis raug. Thaum lub sij hawm lub plhaub fabrication txheej txheem, rationally xaiv plhaub cov ntaub ntawv thiab cov txheej txheem tsis tswj lub expansion thiab shrinkage ntawm lub plhaub. Tib lub sijhawm, lub tshuab computer simulation yog siv los ua lej simulate cov txheej txheem casting, kwv yees lub shrinkage ntawm casting, thiab kho cov pwm qhov ntev raws li qhov simulation tau. Thaum lub sij hawm casting machining txheej txheem, siab - precision machining cov cuab yeej thiab cov txheej txheem yog siv los ntxiv cov txheej txheem thiab kho qhov casting, xyuas kom meej tias nws qhov tseeb qhov raws li qhov yuav tsum tau muaj.

1. Cov kev sib tw: Hauv qhov ploj ntawm - cov txheej txheem ntawm cov titanium alloys, vim cov dej tsis zoo thiab cov khoom siv ceev ceev ntawm cov titanium alloys, qhov tsis xws luag xws li porosity, shrinkage porosity, thiab inclusions tau yooj yim tsim hauv casting, cuam tshuam rau cov khoom siv thiab kev ntseeg siab ntawm cov casting.

2. Kev daws teeb meem: Txhim kho qhov tsim ntawm lub rooj vag system txhawm rau txhim kho cov dej ntws thiab ntim cov peev txheej ntawm molten titanium alloy. Los ntawm rationally teeb tsa txoj hauj lwm thiab qhov loj ntawm lub rooj vag thiab riser, xyuas kom meej tias cov molten titanium alloy tuaj yeem ua tiav tag nrho cov kab noj hniav, tsis txhob eddies thiab gas entrapment. Nyob rau tib lub sijhawm, ntxiv dag zog rau kev kho kom zoo thiab degassing ntawm titanium alloy thaum lub sijhawm melting kom txo tau cov roj thiab cov ntsiab lus suav nrog hauv cov casting. Tsis tas li ntawd, cov thev naus laus zis txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau ua tiav, cov txheej txheem ntsuas qhov tsis zoo

Nrog rau kev txhim kho txuas ntxiv ntawm kev lag luam automotive, cov kev xav tau ntawm kev ua tau zoo rau cov cav tov tau dhau los ua nruj. High -kev ua tau zoo ntawm lub tsheb cav yuav tsum muaj lub zog ntau dua, kev siv roj tsawg, thiab qis dua emissions. Automotive rocker caj npab tsim siv titanium alloy poob-wafer casting tshuab, vim lawv qhov zoo ntawm lub teeb yuag, siab zog, thiab zoo corrosion kuj, tuaj yeem txhim kho lub cav ua haujlwm zoo thiab kev ntseeg siab. Titanium alloy rocker caj npab twb tau pib maj mam siv nyob rau hauv lub cav ntawm ib co siab -kawg automotive hom, thiab lawv yav tom ntej daim ntawv thov kev cia siab yog dav heev.

Txoj kev loj hlob ntawm lub zog tshiab tsheb tau tso siab dua qhov xav tau ntawm lub teeb yuag thiab kev ua haujlwm siab ntawm cov khoom siv tsheb. Txawm hais tias lub zog hluav taws xob ntawm lub zog tshiab tsheb txawv ntawm cov tsheb siv roj ib txwm muaj, cov khoom siv xws li rocker caj npab hauv lub cav valve tsheb ciav hlau tseem tseem tsis tau muaj. Titanium alloy poob-wafer cam khwb cia automotive rocker caj npab tuaj yeem ua tau raws li cov kev xav tau ntawm lub zog tshiab tsheb rau lub teeb yuag thiab siab- cov khoom ua tau zoo, pab txhim kho kev tsav tsheb thiab kev ua haujlwm tag nrho ntawm lub zog tshiab.

Tshaj li kev lag luam tsheb, titanium alloy poob- siv tshuab siv tshuab kuj tseem muaj txiaj ntsig zoo hauv kev siv dav hlau thiab lwm qhov chaw. Kev lag luam aerospace muaj cov kev xav tau siab heev rau kev ua tau zoo thiab kev ua tau zoo ntawm cov khoom, thiab lub zog siab, tsis tshua muaj siab, thiab zoo corrosion kuj ntawm titanium alloy rocker caj npab ua rau lawv zoo tagnrho rau siv nyob rau hauv aircraft engine, spacecraft, thiab lwm yam khoom siv. Los ntawm kev ua kom zoo dua cov titanium alloy poob- cov txheej txheem wax casting thiab txhim kho qhov zoo thiab kev ua tau zoo ntawm castings, nws cia siab tias titanium alloy poob- siv tshuab siv tshuab rau tsheb rocker caj npab tuaj yeem nthuav dav mus rau ntau qhov chaw.