Ukubunjwa kokungunda okusisigxina kubhekiselele kwinkqubo yokuphosa esebenzisa ukungunda okukhethekileyo kwesinyithi (kufa) ukufumana ulwelo olutyhidiweyo lwesinyithi. Kufanelekile ukuvelisaiicastingsngobuninzi. Le nkqubo yokubambisa ibizwa ngokuba yintsimbi yokuphosa okanye ukuphosa umxhuzulane, kuba isinyithi singena kumngundo phantsi komxhuzulane.
Xa kuthelekiswa nokubunjwa kwesanti, ukubunjwa kwegobolondo okanye ukuchithwa kotyalo-mali, apho i-mold idinga ukulungiswa kwi-casting nganye, i-mold casting esisigxina inokuvelisa i-castings kunye neenkqubo ezifanayo zokubumba kwiindawo zokuphosa.
Izinto zokubumba zokuphosa ngokusisigxina zigqitywe ngokuqwalaselwa kokushisa okuthululwayo, ubungakanani bokubunjwa kunye nokuphindaphinda komjikelezo wokuphosa. Bamisela ubushushu obupheleleyo obuza kuthwala ukufa. I-fine-grained grey cast iron yeyona nto isetyenziswa ngokubanzi. I-alloy cast iron, i-carbon steel kunye ne-alloy steels (i-H11 kunye ne-H14) nazo zisetyenziselwa umthamo omkhulu kunye neengxenye ezinkulu. Imibumbo yegraphite ingasetyenziselwa ukuvelisa umthamo omncinci we-aluminiyam kunye ne-magnesium. Ubomi bokufa buncinci kwi-alloys ephezulu yobushushu obunyibilikayo njengobhedu okanye isinyithi esingwevu.
Ukwenza naziphi na izahlulo ezingenanto, ii-cores zikwasetyenziselwa ukubunjwa ngokusisigxina. Iintsimbi zingenziwa ngentsimbi okanye isanti. Xa kusetyenziswa iintsimbi zesanti, inkqubo ibizwa ngokuba yi-semi-permanent molding. Kwakhona, i-metallic core kufuneka ihoxiswe ngokukhawuleza emva kokuqina; kungenjalo, ukutsalwa kwayo kuba nzima ngenxa yokushwabana. Kwimilo entsonkothileyo, iintsimbi zetsimbi eziqhawukayo (iinqununu ezininzi eziqhekezayo) ngamanye amaxesha zisetyenziselwa ukubumba okusisigxina. Ukusetyenziswa kwabo akukho banzi ngenxa yokuba kunzima ukubeka undoqo ngokukhuselekileyo njengeqhekeza elinye nangenxa yokwahluka kobukhulu obunokwenzeka. Ke ngoko, ngee-cores eziqengqelekayo, umyili kufuneka abonelele ngonyamezelo olurhabaxa kule milinganiso.
Ngaphantsi komjikelezo oqhelekileyo wokuphosa, iqondo lokushisa apho i-mold isetyenziselwa khona ixhomekeke kwiqondo lokushisa lokuthulula, ukuphindaphinda komjikelo wokuphosa, ubunzima bokuphosa, ukuphosa imilo, ubukhulu bodonga lokuphosa, ubukhulu bodonga lokubumba kunye nobukhulu bengubo yokubumba. Ukuba ukugalelwa kwenziwa ngengqele yokufa, iicasting ezimbalwa zokuqala zinokuthi ziqhube kakubi de idiyizi ifike kubushushu bayo bokusebenza. Ukuze ugweme oku, isikhunta kufuneka sifudunyezwe kwangaphambili kwiqondo lokushisa layo lokusebenza, ngokukhethekileyo kwi-oven.
Iimathiriyeli eziqhele ukuphoswa kubumba obusisigxina ziialloyi zealuminiyam, ingxubevange yemagnesium, ingxubevange yobhedu, ingxubevange yezinc kunye nentsimbi engwevu. Iyunithi yokuphosa ubunzima busuka kwiigram ezininzi ukuya kwi-15 kg kwizinto ezininzi. Kodwa, kwimeko yealuminiyam, iicastcasts ezinkulu ezinobunzima obufikelela kuma-350 kg nangaphezulu zinokuveliswa. Ukubunjwa kokubumba okusisigxina kuhambelana ngokukodwa nokuveliswa komthamo ophezulu wezinto ezincinci, ezilula kunye nobukhulu bodonga obufanayo kwaye akukho zakhiwo ezintsonkothileyo.
Izinto eziluncedo zeNkqubo yeSigxina yokubunjwa kokungunda:
1. Ngenxa yokubunjwa kwesinyithi esisetyenzisiweyo, le nkqubo ivelisa ukubunjwa okucolekileyo kunye neempawu eziphezulu zoomatshini.
2. Bavelisa umgangatho omhle kakhulu wokugqitywa komyalelo we-microns ezi-4 kunye nokubonakala okungcono
3. Ukunyamezelana okuqinileyo kunokufumaneka
4. Kuyongayo kwimveliso yomlinganiselo omkhulu njengoko umsebenzi obandakanyekayo ekulungiseni ukungunda uncitshisiwe
5. Imingxuma enamacangca amancinci inokuveliswa xa kuthelekiswa nokugalelwa kwesanti
6. Ukufakwa kungafakwa ngokulula kwindawo
| Ukuthelekiswa kweenkqubo ezahlukeneyo zokuphosa
| |||||
| Izinto | Isanti yokuphosa | Ukusatywa kokungunda okusisigxina | Die Casting | Utyalo-mali lokuCasa | Ukuphoswa koMbundo kwiqokobhe eliBondezwe ngokweMichiza |
| Unyamezelo oluqhelekileyo lwe-dimensional, i-intshi | ± .010" | ± .010" | ± .001" | ± .010" | ± .005" |
| ± .030" | ± .050" | ± .015" | ± .020" | ± .015" | |
| Ixabiso elinxulumeneyo ngokobungakanani | Phantsi | Phantsi | Elona liphantsi | Ephezulu | Uphakamileyo ophakathi |
| Iindleko ezihambelanayo ngenani elincinci | Elona liphantsi | Phezulu | Ephezulu | Phakathi | Uphakamileyo ophakathi |
| Ubunzima obuvumelekileyo bokuphosa | Umda | 100 lbs. | 75lbs. | Ii-onsi ukuya kwi-100 lbs. | Iqokobhe ozs. Ukuya kwi-250 lbs. akukho-kubhaka 1/2 lb - iitoni |
| Thinnest icandelo castable, intshi | 1/10" | 1/8" | 1/32" | 1/16" | 1/10" |
| Ukugqitywa komphezulu ohambelanayo | Kuhle ukuya kokulungileyo | Kulungile | Eyona nto ingcono | Kakuhle kakhulu | Iqokobhe lilungile |
| Ukulungelelaniswa kokulula kokuphosa uyilo olunzima | Kuhle ukuya kokulungileyo | Mhle | Kulungile | Eyona nto ingcono | Kulungile |
| Ukulula okuhambelana nokutshintsha koyilo kwimveliso | Eyona nto ingcono | Ubuhlwempu | Abahlwempuzekileyo | Mhle | Mhle |
| Uluhlu lwealloyi lunokuphoswa | mda | I-aluminiyam kunye nesiseko sobhedu sikhethwa | Isiseko se-aluminiyam sikhethwayo | Ayinamda | Unlimited |
Ixesha lokuposa: Jan-29-2021