Lub siab casting (los yog tuag casting luv luv) yog qhov tseem ceeb ntawm kev tau txais ib qho casting los ntawm kev sau cov kab noj hniav nrog cov kua lossis ib nrab -kua hlau ntawm kev kub ceev hauv siab, ua raws li molding thiab solidification nyob rau hauv siab.
Yam ntxwv
Kev kub siab thiab siab - ceev ntim ntawm qhov tuag yog ob yam tseem ceeb ntawm kev tuag casting. Feem ntau siv txhaj tshuaj siab li ntawm ntau txhiab mus txog kaum txhiab kPa, txawm tias ncav cuag 2 × 10⁵ kPa. Lub filling ceev yog kwv yees li 10 ~ 50 m / s, qee zaum txawm tias tshaj 100 m / s. Lub sij hawm txhaws yog luv heev, feem ntau nyob rau hauv thaj tsam ntawm 0.01 ~ 0.2 s. Piv nrog rau lwm txoj kev casting, tuag casting muaj peb qhov zoo hauv qab no:
1. Cov khoom lag luam zoo: siab qhov tseeb ntawm castings, feem ntau sib npaug rau qib 6 ~ 7, txawm tias mus txog qib 4; zoo nto tiav, feem ntau sib npaug rau qib 5 ~ 8; siab zog thiab hardness, nrog lub zog feem ntau 25 ~ 30% siab tshaj xuab zeb casting, tab sis elongation txo los ntawm 70%; dimension stability thiab zoo interchangeability; muaj peev xwm tuag casting nyias-walled thiab complex castings. Piv txwv li, qhov tsawg kawg nkaus phab ntsa tuab ntawm zinc alloy tuag castings tam sim no tuaj yeem ncav cuag 0.3mm; aluminium alloy castings tuaj yeem ncav cuag 0.5mm; qhov tsawg kawg nkaus cam khwb cia txoj kab uas hla yog 0.7 hli; thiab qhov tsawg kawg nkaus yog 0.75mm.
2. Kev Ua Haujlwm Siab Ntau Lawm: Cov tshuab muaj kev tsim khoom siab. Piv txwv li, lub domestically tsim JⅢ3 hom kab rov tav cua txias tuag casting tshuab tuaj yeem tuag- nrum 600-700 zaug hauv nruab nrab ntawm yim teev, thaum lub tshuab kub kub me me tuag casting tshuab tuaj yeem tuag-cast 3000-7000 zaug hauv nruab nrab ntawm yim teev. Tuag casting pwm muaj lub neej ntev; ib qho kev tuag casting pwm tuaj yeem kav ntev txog ntau pua txhiab, lossis ntau lab, ntawm lub voj voog. Mechanization thiab automation tau yooj yim ua tiav.
3. Cov txiaj ntsig zoo ntawm kev lag luam: Vim qhov tseeb qhov ntev thiab du nto ntawm tuag castings, lawv feem ntau siv ncaj qha yam tsis muaj kev siv tshuab ntxiv, lossis yuav tsum tau siv machining tsawg heev. Qhov no txhim kho kev siv hlau thiab txo cov khoom siv ua haujlwm tseem ceeb thiab lub sijhawm ua haujlwm. Castings yog yooj yim muaj. Ua ke tuag casting nrog lwm cov hlau lossis tsis yog- cov khoom siv hlau tuaj yeem siv tau, txuag lub sijhawm sib dhos thiab hlau.
