1- Chii Chinonzi Kukandira Jecha?
Kukanda kwejecha moldinzira yechinyakare asiwo yemazuva ano yekukanda maitiro. Inoshandisa jecha rakasvibira (jecha rakanyorova) kana jecha rakaoma kugadzira masisitimu ekuumba. Kukandwa kwejecha rakasvibira ndiyo nzira yekare yekukandira yakashandiswa munhoroondo. Paunenge uchigadzira mold, mapatani akagadzirwa nematanda, simbi kana epurasitiki anofanirwa kugadzirwa kuitira kuti agadzire gomo. Simbi yakanyunguduka yodira mugomba kuti iitecastingsmushure mekutonhora uye kusimba. Kukanda jecha kunodhura panemamwe maitiro ekukandazvese zvekuvandudza mold uye unit yekukanda chikamu.
Kukanda jecha, nguva dzose zvinoreva kukanda jecha regirini (kana pasina tsananguro yakakosha). Nekudaro, mazuva ano, mamwe maitiro ekukanda ari kushandisawo jecha kugadzira mold. Vane mazita avo, sekutishell casting, furan resin yakavharwa jecha kukanda (hapana mhando yekubika),kurasika furouye vacuum casting.
2 - Kukandwa kwejecha kunogadzirwa sei?
Tine mhando dzekukanda dzakasiyana dzesarudzo yako. Chikamu chesarudzo yeprojekiti yako ichave kusarudzwa kwemaitiro ekukanda ayo anonyatso kushandira zvaunoda. Chimiro chinonyanya kufarirwa kukanda jecha kunosanganisira kugadzira mufananidzo wechidimbu chakapedzwa (kana pateni) chinominyiwa nejecha uye mabhinda ekuwedzera kugadzira simbi yekupedzisira. Iyo pateni inobviswa mushure mekuumbwa kana kufungidzira kwave kuumbwa, uye simbi inounzwa kuburikidza nemumhanyi system kuzadza gomba. Jecha nesimbi zvakaparadzaniswa uye makanda anocheneswa uye anopedzwa kuti aendeswe kune vatengi.
3 - Kukandira Jecha Kunoshandiswa Sei?
Sand mold castingsanoshandiswa zvakanyanya mu amaindasitiri akasiyanauye midziyo yemuchina, kunyanya yekukanda mahombe asi ine huwandu hudiki hunoda. Nekuda kwemutengo wakaderera wekuvandudza kwekushandisa uye pateni, unogona kuisa mari inonzwisisika muforoma. Kazhinji, kukanda jecha ndiyo sarudzo yekutanga kune inorema michina senge marori anorema, mota dzenjanji, michina yekuvaka, mavharuvhu, pombi uye.hydraulic systems. Kunyanya, iyoductile iron jecha castingsanoshandiswa zvakanyanya uye zvakanyanya kumaindasitiri emazuva ano.
4 - Ndezvipi Zvakanakira Kukandira Jecha?
✔ Mutengo Wakaderera nekuda kwezvakachipa uye zvinodzokororwa mold zvinhu uye zviri nyore kugadzira michina.
✔ Huwandu hwehuremu hweyuniti kubva pa0.10 kg kusvika pa500 kgs kana kutokura.
✔ Yakasiyana Mamiriro kubva kumhando yakapusa kuenda kune yakaoma mhando.
✔ Inokodzera kugadzirwa kwezvinodiwa zvehuwandu hwakasiyana.
5 - Ndeipi Metal & Alloys Inoita Jecha Yako Yekukanda Foundry Inonyanya Kukanda?
Kazhinji simbi zhinji dzine ferrous uye dzisiri ferrous uye alloys anogona kukandwa nejecha. Zvemidziyo yeferrous,grey cast iron, ductile cast iron, carbon steel,alloy simbi, simbi yekushandisa pamwe chete nesimbi isina tsvina alloysdzinowanzodirwa. Kune nonferrous applications, yakawanda Aluminium, Magnesium,Copper-based alloysuye zvimwe nonferrous zvinhu zvinogona kukandwa, apoAluminium uye alloy yayondiwo anonyanya kuumbwa kuburikidza nejecha.
6 - Ndeupi Kushivirira Kwekukanda Kunogona Kuitwa Nejecha Rako?
Iyo yekukanda kushivirira yakakamurwa kuva Dimensional Casting Tolerances (DCT) uye Geometrical Casting Tolerances (GCT). Yedu yekutanga inoda kutaura newe kana uine chikumbiro chakakosha pane zvinodiwa kushivirira. Pano pane anotevera pane general tolerances giredhi yataigona kusvika neyedugreen sand kukanda, shell mold casting uye kwete-kubika furan resin jecha kukanda:
✔ DCT Giredhi neGreen Sand Casting: CTG10 ~ CTG13
✔ DCT Giredhi neShell Mold Kukanda kana Furan Resin Jecha Kukandira: CTG8 ~ CTG12
✔ GCT Giredhi neGreen Sand Casting: CTG6 ~ CTG8
✔ GCT Giredhi neShell Mold Kukanda kana Furan Resin Jecha Kukandira: CTG4 ~ CTG7
7 - Chii chinonzi Sand Molds?
Zviumbwa zvejecha (jecha mold) zvinoreva nzira yekuumba inogadzirwa nejecha rakasvibira kana jecha rakaoma. Majecha ekuumba masisitimu anonyanya kuvhara bhokisi rejecha, spures, ingates, risers, jecha cores, mold jecha, mabhainda (kana aine), refractory zvinhu uye zvimwe zvese zvinokwanisika zvikamu zvekuumba.