Poob npaus casum casting yog cov khoom khov ua qauv uas sib xyaw ua ke cov khoom siv yas roj yas siv cov ntaub ntawv xuab zeb nrog lub tshuab dawb qhuav. Cov npe tseem ceeb hauv Nyij Pooj yog "qhuav xuab zeb casting" thiab "kev ua kom ploj mus hauv ntiaj teb, thiab yog tus qauv ua npuas dej (USA)
Kev qhia yooj yim
Poob nphum casting (tseem hu ua pwm pov tseg) yog tag nrho cov txheej txheem ua npuas ncauj xyaw uas siv cov tshuab yas kom qhuav nrog cov xuab zeb qhuav thiab qhuav tshuab. Nws yog txheej txheem ntawm kev sib txuas ua ke ua kom zoo sib xws ntawm qhov loj me thiab cov duab rau cov khoom. Nrum rau hauv tus qauv pawg thiab txhuam cov tshuab hluav taws kub. Tom qab ziab, nws tau faus nyob rau hauv cov quartz xuab zeb rau kev co molding, thiab cov kua hlau siv txoj haujlwm ntawm tus qauv, thiab tom qab ntawd soliorifies. Thiab tom qab ntawd txias los ua ib txoj kev tshiab casting.
Piv nrog cov txheej txheem tsoosing, ploj ua npuas ncauj casting muaj cov yam ntxwv hauv qab no: 1} Cov khoom lag luam sab nrauv, thiab cov khoom siv nyob sab hauv, qis}} loj- nplai thiab pawg ntau lawm yog ua tau. Lub sib dhos sib dhos sib dhos yog ib puag ncig tus phooj ywg {7} Nws tuaj yeem txhim kho kev ua haujlwm, txo kev siv zog ua haujlwm, thiab txo kev siv zog.
Cov ntsiab cai ntau lawm
Kev Tsim Kho Kev Tsim Kho: Cov qauv no ua ntej ua rau cov txheej txheem tshwj xeeb, thiab muab nws tso rau hauv cov ntawv qhia kub tshwj xeeb, thiab ua kom qhuav xuab zeb raws li cov txheej txheem. Cov pwm yog puab rau hauv cov duab uas yuav tsum tau ua, compression pwm los ntawm peb- qhov seem kev co, thiab kev khiav tawm mus. Lub Molten hlau tau nchuav rau hauv, thiab cov pwm evaporates thiab ploj. Cov hlau molten hloov cov pwm, thiab tib lub tshuab ua npuas ncauj raug luam tawm.
Casting txheej txheem
1. Xaiv ua npuas ncauj hlaws:
Muaj peb hom peelam peeads uas tau siv tshwj xeeb rau poob ua npuas.
Respandable polystyrene cob cov hlaws dai (ept for luv)
② Nthab Methacrylate -}} Styrene coprene coprende coprolymer cob cov hlaws dai (STMMA rau luv)
③ Expandable polmethyl methamrylate Resin hlaws dai (EPMA rau luv)
Feem ntau siv nthuav nthuav dav polystyrene cob cov hlaws nplaum (EPS) yog siv rau Casting Tsis yog {0} Khov hlau thiab dav hlau castings.
Cov yam ntxwv hlaws teeb: translucent hlaws dai, pre - nthuav tawm ntau qhov 40-60, particle loj 0.18-0 mm (6 qhov ntau),
Lub particle loj ntawm cov txiv ntoo thawj zaug xaiv yog 1/9 txog 1/10 lossis tsawg dua qhov tsawg kawg nkaus phab ntsa tuab ntawm lub cam khwb cia.
2. Qauv Ua: Muaj ob qho xwm txheej.
◎ Ua los ntawm cov ua npuas qaib cov hlaws: Pre - nthuav tawm {{l}} npuas- txias thiab hais dab neeg
① fooning
Ua ntej EPS cov hlaws dai tau ntxiv rau cov pwm, lawv yuav tsum ua ntej -}} Tshaj tawm cov hlaws rau qhov loj me. Lub pre - Cov txheej txheem nthuav dav yog ib qho tseem ceeb uas txiav txim siab ntom ntom, kev ruaj khov ruaj khov thiab qhov tseeb ntawm tus qauv. Muaj peb txoj kev tsim nyog rau ua ntej {{4} Tshaj tawm EPS Kev nthuav dav, Chav ua ntej} Tshaj tawm, thiab lub tshuab nqus tsev ua ntej} Tshaj tawm. Lub tshuab nqus tsev ua ntej - nthuav tawm cov hlaws dai muaj tus nqi nthuav dav, yog qhuav, thiab siv dav.
Kev tso tseg
Pre6 - Tshaj tawm cov hlaws dai yog muab tso rau hauv ib qho qhuav, zoo} {} ventilated silo rau ib lub sijhawm. Txhawm rau kom sib npaug ntawm sab nraud ntawm cov hlaws dai, cov hlaws dai yog muab elasticity thiab muaj peev xwm rov qab los, thiab noo noo nyob rau saum npoo ntawm cov hlaws dai. Lub sijhawm loj hlob yog 8 txog 48 teev.
③Foam moulding
Pre6 -} Tshaj tawm EPS cov hlaws dai yog sau rau hauv cov hlaws dai, ua kom lawv ua ke los ua ib qho chaw du, uas yog, qauv. Tus qauv yuav tsum yog txias rau hauv qab nws softening kub ua ntej raug tshem tawm ntawm cov pwm. Tus qauv tsuas tuaj yeem raug tshem tawm ntawm cov pwm tom qab nws tau ua kom tawv thiab coj qauv. Tom qab raug tshem tawm ntawm cov pwm, lub sijhawm yuav tsum raug tso cai rau tus qauv kom qhuav thiab ua cov seem tsis sib haum. Muaj ob hom khoom siv: cov pa roj khov thiab tsis siv neeg moulding machine.
◎ Ua los ntawm cov ntawv ua npuas ncauj: Ua npuas ncauj rau → Tej Hlau → Gluing → Model
Rau cov qauv yooj yim, koj tuaj yeem siv cov hlau uas pheej hmoo txiav cov ntawv sau ua npuas dej rau hauv cov qauv.
Rau cov qauv nyuaj, koj tuaj yeem siv cov xaim hluav taws xob tiv thaiv cov khoom siv los faib cov qauv rau ntau qhov, thiab tom qab ntawd muab cov qauv ua ke los ua kom tag nrho cov qauv.
