I-investment casting, ekwabizwa ngokuba yi-wax-loss casting, yi-wax yokubumba eyenziwe nge-wax ukuze iphoswe kwiinxalenye, kwaye ukungunda kwe-wax kuqatywe ngodaka, okuyi-mold yodaka. Emva kokumisa isikhunta sodongwe, nyibilikisa i-wax yangaphakathi emanzini ashushu. Ukubumba ngodongwe lokubumba iwax enyibilikisiweyo kuyakhutshelwa ngaphandle kwaye kugcadiswe kwimbumba yodongwe. Yakhe yosiwe. Ngokuqhelekileyo, xa usenza iimbumba zodaka, isango lishiywe, kwaye ke isinyithi esityhidiweyo sigalelwa esangweni. Emva kokupholisa, iinxalenye zetsimbi ezifunekayo zenziwe.

Izizukulwana ezidlulileyo zotyalo-mali:

Amagama aphambili: kuthatha ixesha kwaye kuyabiza

Utyalo mali lukwabizwa ngokuba yi-wax loss casting. Indlela yokulahleka kwe-wax e-China yavela kwiXesha leNtwasahlobo nasekwindla kwaye inembali ende.

Ilahleko yokuphosa i-wax yipatheni eyenziwe nge-wax ukuze iphoswe kwiindawo, kwaye ke ipateni ye-wax iqatywe ngodaka, eyipatheni yodaka. Emva kokumisa isikhunta sodongwe, nyibilikisa i-wax yangaphakathi emanzini ashushu. Ukubumba ngodongwe lokubumba iwax enyibilikisiweyo kuyakhutshelwa ngaphandle kwaye kugcadiswe kwimbumba yodongwe.

Amanyathelo otyalo-mali olusa kwiprinta ye-3D aziswa ngezantsi.

Amanyathelo asibhozo otyalo-mali loshicilelo lwe-3D:

1. CAD Modelling, 3D Printing Lost Foam

Iifayile zedijithali zemodeli etyhidiweyo yokutyhidiza ziyilwe ngokusebenzisa isoftware yeCAD, kwaye emva koko ithunyelwe ngaphandle kwifomathi ye-STL kwaye iprintwe ngokusebenzisa umshicileli we-3D (iteknoloji ye-SLA iyacetyiswa kwiprinta ye-3D). Inkqubo yoshicilelo idla ngokuthatha iiyure ezimbalwa kuphela.

2. Khangela ukuba akukho mingxunya na kwimodeli etyhidiweyo.

Ukupholishwa komphezulu kunye nomnye umsebenzi we-post-processing wenziwa kwimodeli eprintiweyo ye-3D ukususa i-lamination yomhlaba. Emva koko jonga ngokucophelela ukuba ngaba imodeli inazo naziphi na izikroba okanye iintanda.

3. Ukwaleka umphezulu

Xa imodeli ithunyelwa kwi-Foundry, umphezulu wemodeli uhlanganiswe kuqala nge-ceramics slurry. Uluhlu lwe-slurry kufuneka ludibaniswe ngokusondeleyo kunye nemodeli yokuphosa utyalo-mali, kwaye umgangatho womgangatho wokuqala we-slurry uya kuchaphazela ngokuthe ngqo umgangatho womhlaba wokuphosa kokugqibela.

4. Ukugqobhoza

Emva kokuba i-ceramics slurry ifakwe, uluhlu lwangaphandle lwe-ceramics slurry yintlabathi ye-viscous. Emva kokumisa, phinda amanyathelo okugcoba i-slurry kunye nokunamathela kwisanti kuze kube yilapho igobolondo ifikelela kubukhulu obufunwayo.

5. Ukuqhotsa kunye nokucoca

Xa iqokobhe lomile, lifakwa kwiziko kwaye litshiswe de yonke imifuziselo yokunyibilika ngaphakathi itshiswe icocekile. Ngeli xesha, igobolondo iya kuba yi-ceramics iyonke ngenxa yokufudumeza. Emva kokususwa kwesithando somlilo, indawo yangaphakathi yesithando somlilo kufuneka ihlambuluke ngokucokisekileyo ngokuhlamba, emva koko yomiswe kwaye ifakwe ngaphambili.

6. Ukuphosa

Ngokulahla, uxinzelelo, ukufunxa ngevacuum kunye ne-centrifugal force, isinyithi esinyibilikisiweyo solwelo sizaliswa ngeqokobhe elingenanto kwaye emva koko sipholiswe.

7. Ukwenza imodeli

Emva kokuba isinyithi se-liquid sipholile ngokupheleleyo kwaye senziwe, igobolondo ye-ceramic ngaphandle kwesinyithi ihlanjululwa yi-vibration yomatshini, ukucocwa kweekhemikhali okanye ukugungxulwa kwamanzi.

8. Emva kokulungiswa

Ukuchaneka komda, ukuxinana kunye nezinye iimpawu zemishini yeemodeli zetsimbi nazo zinokulinganiswa ngonyango lomphezulu okanye ukwenziwa komatshini.

Umshicileli we-SLA 3D we-SHDM unokusetyenziselwa ukwenza iimbumba zeplastiki ngokusebenzisa i-fusible kunye nezixhobo eziphezulu zokumelana nokushisa. Kufanelekile kakhulu ukuphosa iinxalenye ngendlela yokulahleka kwe-wax.

Emva kokuba ukuprintwa kwe-mold yeplastiki kugqityiwe, amaqhekeza e-powder aseleyo aya kususwa, kwaye emva koko ukungena kwe-wax kuya kusetyenziswa ukuqinisekisa ukuba i-mold yeplastiki ivaliwe kwaye ihlambulukile ukuphucula umgangatho weengxenye zokuphosa utyalo-mali.

Inkqubo yonyango elandelayo iyafana nendlela yokuvelisa yendabuko: okokuqala, i-ceramic coating ifakwe phezu kwendawo yokubumba yeplastiki, kwaye emva koko ifakwe kwi-oven.

Xa ubushushu budlula i-700 C, ukungunda kweplastiki kutshisa ngokupheleleyo ngaphandle kwentsalela, ekwayimvelaphi yegama lendlela yokulahleka kwe-wax.

Ushicilelo lwe-3D lunokuqonda uyilo oluntsonkothileyo, kwaye lwenza utyalo-mali olubunjiweyo ngokukhawuleza, ngokulula nangoqoqosho. Isetyenziswa kakhulu kwiimoto, ubucwebe, ukwenza oomatshini kunye namanye amashishini.