Siab casting muaj ob yam ntxwv ntawm kev kub siab thiab kev kub ceev puv thiab tuag casting. Nws nquag siv cov kev txhaj tshuaj tshwj xeeb yog los ntawm ntau txhiab mus rau ntau lub kaum ntawm txhiab tus kPa, thiab txawm txog 2 × 105 kPa. Kev puv ceev yog txog 10 ~ 50m / s, thiab qee zaus nws tuaj yeem ncav cuag tshaj 100m / s. Lub sijhawm puv sijhawm luv luv, feem ntau yog qhov ntau ntawm 0.01 ~ 0.2s.
Piv nrog rau lwm txoj kev casting, tuag casting muaj cov nram qab no peb zoo:
Khoom zoo zoo
Casting qhov tseeb yog siab, feem ntau yog sib npaug rau 6 ~ 7, txawm txog li 4; qhov zoo tagnrho, feem ntau sib npaug li 5 ~ 8; siab zog thiab tawv, feem ntau siab tshaj cov xuab zeb casting los ntawm 25 ~ 30%, tiam sis ncua Cov nqi txo qis dua li 70%; qhov loj yog qhov ruaj khov thiab qhov kev sib nkag siab yog qhov zoo; qhov nyias-walled txoj casting yuav tuag-cam khwb cia. Piv txwv li, zinc alloy tuag castings muaj tsawg kawg nkaus phab ntsa thickness ntawm 0.3 mm; aluminium alloy castings mus txog 0.5 hli; qhov tsawg kawg ntiv nplhaib diameter yog 0.7 hli; thiab qhov tsawg kawg nkaus yog 0,75 mm.
siab tsim tau
Lub tshuab muaj cov khoom tsim tawm. Piv txwv, lub tsev txias JIII3 txias chamber tuag casting tshuab tuag taus-nrum 600-700 zaug hauv nruab nrab, thiab lub me kub chamber tuag casting tshuab tuag taus nrum 3000 ~ 7000 zaug txhua txhua teev. Lub plua tuag casting muaj lub neej ntev kev ua haujlwm thiab hom tuag-casting. Die-casting alloys nrog ib lub neej ncua ntawm ntau pua txhiab lub sij hawm los yog txawm tsheej lab ntawm cov sij hawm; yooj yim rau mechanize thiab automate.
Yav zoo siv nyiaj txiag
Vim yog qhov luaj li cas ntawm cov tuag casting, cov nplaim yog du thiab li ntawd. Feem ntau, nws tsis yog ua tiav log thiab siv ncaj qha, los yog tus nqi yog tsawg, yog li siv cov nqi ntawm cov hlau zoo dua qub, thiab ntau ntau cov khoom lag luam thiab cov sij hawm neeg tsawg; tus nqi ntawm qhov casting yog ib qho yooj yim; qhov kev tuag tuag-casting yuav siv tau rau lwm cov ntawv hlau los yog tsis yog-hlau. Tua sib koom ua ke thiab txuag hlau.
Tuag casting disadvantage
Txawm hais tias tuag casting muaj ntau yam zoo, nws kuj muaj ib co shortcomings uas tau tsis tau daws. Xws li:
1). Thaum tuag casting, vim hais tias cov kua hlau ua paug kab noj muaj kev siab tshaj thiab kev khiav dej khov tsis ruaj tsis khov, txoj kev tuag ploj tuag tag nrho, thiab qhov casting yog nws ua kom cov pores thiab tsis tuaj yeem kho cua sov;
2). Tuag casting yog nyuaj rau complex concave castings;
3). High point melting point alloys (xws li tooj liab, ferrous hlau), tuag casting hom muaj qis dua;
4). Nws tsis haum rau cov khoom me me me me. Lub ntsiab yog vim li cas qhov tuag casting hom muaj siab raug nqi, cov tuag casting tshuab muaj ntau lawm efficiency, thiab cov khoom me me ntau lawm yog uneconomical.
2. Kev siv ntau yam thiab txoj kev loj hlob ntawm kev tuag casting
Tuag-casting yog ib hom kev ua qauv zoo tshaj plaws hauv cov hlau. Nws yog ib txoj hauv kev zoo kom ua tiav cov chipping thiab tsis muaj chipping. Nws yog dav siv thiab npaj sai sai. Tam sim no, cov hlau tuag tsis sib haum yog tsis txwv cov hlau uas tsis yog hlau ntoo xws li zinc, aluminium, magnesium thiab tooj liab, tab sis kuj raug siv los tua cov cam khwb cia hlau thiab cam hlau.
Qhov loj thiab qhov hnyav ntawm cov casting tuag nyob ntawm lub hwj chim tuag casting tshuab. Vim yog qhov nce lub zog ntawm kev tuag casting tshuab, cov duab ntawm casting tuaj yeem los ntawm ob peb millimeters mus rau 1-2 m; qhov hnyav tuaj yeem los ntawm ob peb grams rau ob peb lub kaum ntawm kilograms. Txawv teb chaws, txhuas castings nrog ib lub cheeb ntawm 2m thiab ib qhov hnyav ntawm 50 kg tau tuag taus. Cov khoom tawg yog tsis pub siv rau kev lag luam thiab kev lag luam twj ywm, thiab maj mam nthuav dav ntxiv rau lwm cov lag luam, xws li kev siv tshuab, kev lag luam tshuab, tshuab hluav taws xob, kev siv hluav taws xob, tshuab computer, cov khoom siv kho mob, cov xuab moos, cov koob yees duab niaj hnub siv kho vajtse. kev lag luam. Nyob rau hauv lub tshuab tuag casting, cov txheej txheem tshiab xws li nqus plua plav, cov pa roj carbon dioxide-casting, precision-tuag die-casting, thiab daim ntawv thov ntawm soluble cores tau tshwm sim.