Nyob rau hauv xyoo tas los no, nrog rau kev nce qib hauv kev tshawb fawb thiab thev naus laus zis, kev nce qib tseem ceeb tau ua tiav hauv cov khoom siv casting. Kev tsim cov thev naus laus zis hauv thaj chaw xws li molding thiab core- ua, alloy melting, thiab solidification tswj tau pom kev loj hlob, txav mus rau ntsuab thiab hnyav casting xyaum. Ze ntawm -net-puab txoj kev tam sim no tso cai rau kev siv cov khoom siv me me kom tsis muaj kev siv tshuab ntxiv. Khoos phib tawj- pab tsim thiab simulation tsom xam tau dav siv nyob rau hauv casting ntau lawm, txo txoj kev loj hlob cycles thiab cov nqi thaum lub sij hawm markedly txhim kho zoo. 3D Printing ceev prototyping tshuab tau ntxiv propelled kev vam meej nyob rau hauv casting, txhim khu kev ua tau zoo ntawm cov khoom tshiab kev loj hlob thiab qhov yooj ntawm cov qauv tsim.
I. Moulding thiab Core -Technology
Moulding thiab core- ua yog cov txheej txheem tseem ceeb hauv kev tsim cov casting, cuam tshuam qhov zoo ntawm casting, raug nqi, kev tsim khoom, kev siv zog, thiab kev ua qias tuaj ib puag ncig.
(1) Av nplaum xuab zeb ntsuab xuab zeb Moulding txheej txheem
Huab cua impulse molding muaj qhov zoo xws li pwm siab compactness, uniformity, muaj peev xwm los tsim complex castings, tsis tshua muaj suab nrov, thiab lub zog efficiency. Static siab molding tshem tawm cov suab nrov uas cuam tshuam nrog jolt-squeeze molding tshuab, zoo heev txhim kho qhov chaw ua haujlwm. Qhov kawg compaction siv lub phaj siab kom zoo compactness thiab uniform hardness thoob cov pwm, uas ua rau siab precision ntawm castings. Mechanized, automated, thiab siab - ceev ntsuab xuab zeb molding txheej txheem xws li txhaj tshuaj molding, cua impulse molding, thiab zoo li qub siab molding muab cov txiaj ntsig xws li tus nqi qis, muaj kuab paug tsawg, kev ua haujlwm siab, thiab zoo heev, ua rau lawv yog thawj txoj hauv kev tsim cov me me thiab nruab nrab- loj castings.
(2) Nqus Sealed Moulding (V- txheej txheem)
Lub hauv paus ntsiab lus ntawm V- txheej txheem suav nrog sau lub khob tshwj xeeb tsim nrog qhuav, khi- xuab zeb dawb, muab khi nrog cov yas zaj duab xis, thiab tsim lub tshuab nqus tsev kom compact cov xuab zeb los ntawm qhov sib txawv ntawm cov pwm sab hauv thiab sab nraud. Txoj kev no yog tsim rau kev tsim cov castings nrog cov cheeb tsam loj, cov phab ntsa nyias, cov npoo du, thiab cov duab meej. Nyob rau hauv xyoo tas los no, V- txheej txheem tau siv dav hauv kev tsim cov tsheb ciav hlau tsheb ciav hlau, forklift counterweights, kos duab kos duab, loj- cov cim qhia, piano hlua thav duab, thiab da dej.
(3) Resin Sand Moulding and Core-Txoj kev ua
Resin xuab zeb muaj lub zog siab thiab qhov tseeb qhov tseeb rau cov pwm thiab cov cores, uas ua rau qhov zoo tshaj plaws nto rau castings. Txawm li cas los xij, nws tuaj yeem ua rau muaj kuab paug ib puag ncig. Tsim kom muaj tsawg-cov ntaub ntawv muaj kuab paug, catalysts, hardeners, thiab kev txhawb nqa ib puag ncig cov cuab yeej kho mob yog qhov tseem ceeb rau kev txhawb nqa thiab nce qib resin xuab zeb molding thiab core- ua cov txheej txheem.
(4) Sodium Silicate Sand Moulding thiab Core- Ua Txheej Txheem
Sodium silicate xuab zeb nthuav tawm zoo fluidity, yooj yim ntawm compaction, thiab qis zog noj. Nws siab -kub collapsibility ua rau nws tshwj xeeb tshaj yog haum rau steel castings uas yuav tawg. Txawm li cas los xij, sodium silicate xuab zeb muaj cov khoom siv tsis zoo, thiab siv cov xuab zeb rov tsim dua yog qhov nyuaj. Yog li ntawd, kev tshawb fawb txog kev hloov kho sodium silicate thiab tsim cov txheej txheem tshiab thiab rov ua dua tshiab thiab cov khoom siv rau sodium silicate xuab zeb yog qhov tseem ceeb. Daim ntawv thov ntawm ester- hardened sodium silicate xuab zeb tau txhim kho tus nqi ntawm cov xuab zeb siv thiab tau txais kev pom zoo rau nruab nrab thiab loj steel castings.
(5) Cov txheej txheem Moulding Core
Cov tub ntxhais sib dhos molding, hu ua "precision xuab zeb casting," yog qhov tsim nyog rau kev tsim nyob ze -net-puab nyuaj castings (xws li cav blocks thiab lub tog raj kheej taub hau) thiab yuav tsum muaj qhov tseeb qhov tseeb ntawm cov cores. Nrog rau kev txhim kho thiab kev siv ntau yam tshuaj binders uas kho tau ntawm chav tsev kub, tam sim no muaj peev xwm tsim cov xuab zeb zoo heev. Lub thawv txias tub ntxhais sib dhos molding txoj kev tau ua tiav siv los ua nyob ze -net- zoo li castings xws li tsheb cav thaiv.
(6) Casting Txheej
Qhov zoo ntawm kev ua haujlwm ntawm cov xuab zeb pwm (cores) nyob rau hauv kev sib cuag ncaj qha nrog molten hlau cuam tshuam qhov zoo ntawm casting. Kev siv cov coatings rau cov chaw no yog ib txoj hauv kev zoo thiab siv tau los txhim kho qhov zoo. Kev txhim kho thiab kev siv cov txheej txheem siab -kev ua tau zoo ntawm cov organic thiab inorganic txheej yog qhov tseem ceeb ntawm kev siv thev naus laus zis los txhim kho qhov tseeb ntawm qhov tseeb thiab qhov zoo.
II. Tshwj xeeb Casting thiab ze -Net-Shape Technology
Raws li cov cuab yeej tsim khoom niaj hnub xav tau ntau dua qhov tseeb thiab qhov zoo ntawm qhov chaw rau casting, tshwj xeeb casting yog hloov zuj zus mus rau ze rau -net-puab tsim. Nyob rau hauv xyoo tsis ntev los no, raws li ib tug precision forming technology rau kev ua tau zoo me me los yog tsis muaj machining nyiaj, daim ntawv thov thiab kev loj hlob ntawm tshwj xeeb casting yog feem ntau xav txog nyob rau hauv ob yam nram qab no:
1) Tsim cov txheej txheem tshiab thiab ua kom cov txheej txheem kev sib xyaw ua ke. Ntxiv dag zog rau kev tshawb fawb thiab kev siv ntawm magnesium alloy tuag casting thiab nyem casting technologies kom tau raws li qhov xav tau ntawm lub tsheb sib zog. Txhim khu kev tshawb fawb ntawm titanium alloy peev casting txheej txheem los daws cov teeb meem pwm khoom. Siv cov cuab yeej prototyping sai los hloov cov qauv siv quav ciab ib txwm ua, ua kom lub voj voog ntau lawm. Tshawb nrhiav cov thev naus laus zis tshiab sib txawv ntawm qhov sib txawv thiab cov cuab yeej siv los txhawb kev hloov pauv los ntawm qis-siab casting mus rau qhov sib txawv siab casting.
2) Ze ntawm -net-shape casting technology (Nyob ze Net Shape Process) tau hloov cov kev xav ib txwm hais tias casting tsuas yog muab cov blanks ntxhib, ua rau kev tsim cov castings yam tsis muaj kev pab cuam machining. Piv txwv li, nyem casting tshuab yog tus cwj pwm los ntawm "ruaj khov filling, solidification nyob rau hauv siab, pub mis, thiab yas deformation," uas ua rau cov castings nrog siab metallurgical zoo, qhov tseeb qhov tseeb, cov txheej txheem siab yield, thiab txo cov kev xav tau ntawm machining. Ze ntawm -net-shaj technology sawv cev rau lub neej yav tom ntej ntawm kev lag luam casting, vim nws tuaj yeem txo cov khoom siv, kev siv hluav taws xob, nqi zog, thiab txhim kho casting zoo, ua kom tau raws li qhov xav tau ntawm kev tsim khoom tsim khoom.
