I-Vacuum Casting ikwabizwa ngokuba yi-Negative Pressure etywiniweyo, ukuNcitshiswa koxinzelelo okanyeV Inkqubo yokuSasa. Ukuphoswa koxinzelelo lwe-vacuum kufuna ukusetyenziswa kwezixhobo zokukhupha umoya ukukhupha umoya ngaphakathi kwendawo yokubumba, kwaye emva koko usebenzise umahluko woxinzelelo phakathi kwangaphakathi nangaphandle komngundo ukugubungela ifilimu eshushu yeplastiki kwipateni kunye netemplate. Ukubumba okutyhidiweyo kuya komelela ngokwaneleyo ukumelana nentsimbi etyhidiweyo ngexesha lokuphosa. Emva kokufumana i-vacuum mold, gcwalisa ibhokisi yesanti ngesanti eyomileyo ngaphandle kwe-binder, kwaye emva koko uvale umphezulu wesanti yokubumba ngefilimu yeplastiki, ulandelwe yivacuum ukwenza isanti iqine kwaye iqine. Emva koko, susa i-mold, ubeke iinqununu zesanti, uvale i-mold ukwenza yonke into ilungele ukugalelwa. Ekugqibeleni, ukuphosa kufunyenwe emva kokuba isinyithi esityhidiweyo sipholile kwaye siqiniswe.
I-Ductile cast iron, emele iqela lentsimbi, ebizwa ngokuba yi-nodular iron. I-nodular cast iron ifumana i-graphite ye-nodular ngokusebenzisa i-spheroidization kunye nonyango lwe-inoculation, oluphucula ngokufanelekileyo iimpawu ze-mechanical of iron cast, ngokukodwa i-plastiki kunye nokuqina, ukuze ufumane amandla aphezulu kune-carbon steel. I-Ductile iron ayiyona nto enye kodwa iyinxalenye yeqela lezinto ezinokuveliswa ukuba zibe noluhlu olubanzi lweepropati ngokulawulwa kwe-microstructure. Uphawu oluqhelekileyo lweli qela lezinto eziphathekayo yimilo yegraphite. Kwiintsimbi ze-ductile, i-graphite ikwimo ye-nodules kunokuba i-flakes njengoko i-iron engwevu.
Izinto eziluncedo kwiNkqubo yokuGcina iVacuum
1) Iukuphoswa kwevacuumbabe nokuchaneka okuphezulu komgangatho, ulwandlalo olucacileyo kunye nomphezulu ogudileyo.
Ngenxa yokuba umphezulu wemodeli uhlanganiswe nefilimu yeplastiki, akukho mfuneko yokungcangcazela okanye ukunkqonkqoza xa udonsa isikhunta. Ukufunxa kunye noxinzelelo olubi lwenza ukuba isanti yokubumba ihlangane, kwaye ukuqina kobunjwa besanti kuphezulu kwaye kufana. Ngaphantsi kobushushu besinyithi esinyibilikisiweyo, umngxuma awukho lula ukuwukhubaza. Ngaphezu koko, ubukho boxinzelelo olubi bukulungele ukuzaliswa ngokupheleleyo kwesinyithi esinyibilikisiweyo kwimodeli. Uburhabaxa bomphezulu benkqubo ye-V ye-castings inokufikelela ku-Ra = 25 ~ 2.5μm. Inqanaba lonyamezelo lwe-dimensional of castings linokufikelela kwi-CT5 ~ CT7. Umgangatho wembonakalo yokuphosa uxinzelelo olubi lulungile, kwaye umgangatho wangaphakathi uthembekile.
2) Akukho zibophelelo, amanzi kunye nezongezo kwintlabathi yokubumba, eyenza ukuqhutyelwa kwesanti kube lula.
3) Kulula ukucoca i-vacuum castings. Iigesi ezinobungozi ezincinci ziveliswa ngexesha lenkqubo yokuphosa.
I-4) I-vacuum castings ingasetyenziswa kuluhlu olubanzi lwamashishini. Ingasetyenziselwa imveliso yebhetshi encinci yesiqwenga esinye kunye nemveliso yobuninzi, ngakumbi iicastings ezinkulu neziphakathi kunye neentsimbi ezinodonga olucekethekileyo zifaneleke ngakumbi ukuphosa ivacuum.
Kutheni ukhetha i-RMC Foundry yeSiko loVacuum Castings?
• Ukufunyanwa lula kwesanti kuba izibophelelo azisetyenziswa
• Isanti ayifuni ukulungiswa kwakhona koomatshini.
• Ukungena komoya okulungileyo ngenxa yokuba akukho manzi axutywa nesanti, ngoko ke ukuphosa iziphene kuncinane.
• Ifaneleke ngakumbi kwiicastings zesikali esikhulu
• Amaxabiso asebenzayo, ngakumbi kwiicastings ezinkulu.
