1- Ho Lahlela Lehlabathe ke Eng?
Ho lahla hlobo ea lehlabatheke mokhoa o tloaelehileng empa hape oa sejoale-joale. E sebelisa lehlabathe le letala (lehlabathe le mongobo) kapa lehlabathe le omeletseng ho theha mekhoa ea ho bopa. Ho lahla lehlabathe le letala ke mokhoa oa khale ka ho fetisisa o kileng oa sebelisoa historing. Ha ho etsoa hlobo, mekhoa e entsoeng ka lehong, tšepe kapa polasetiki e lokela ho hlahisoa e le hore e thehe sekoti se sekoti. Tšepe e qhibilihisitsoeng ebe e tšela ka sekoting ho thehali-castingska mora ho phodisa le ho tiisa. Ho etsa lehlabathe ho theko e tlase ho fetamekhoa e meng ea ho lahlaka bobeli bakeng sa nts'etsopele ea hlobo le karolo ea ho lahlela yuniti.
Ho lahla lehlabathe, kamehla ho bolela ho lahla lehlabathe le letala (haeba ho se na tlhaloso e khethehileng). Leha ho le joalo, matsatsing ana, mekhoa e meng ea ho lahla le eona e sebelisa lehlabathe ho etsa hlobo. Ba na le mabitso a bona, joalo kaho lahla khetla, furan resin e koahetsoeng ka lehlabathe (ha ho mofuta oa ho baka),foam e lahlehilengle vacuum casting.
2 - Lisebelisoa tsa Lehlabathe li Etsoa Joang?
Re na le mefuta e fapaneng ea ho latsoa bakeng sa khetho ea hau. Karolo ea boikhethelo bakeng sa projeke ea hau e tla ba khetho ea mokhoa oa ho lahla o tla sebeletsa litlhoko tsa hau hantle. Sebopeho se tummeng ka ho fetisisa ke sa lehlabathe se kenyelletsang ho etsa setšoantšo sa sengoathoana se phethiloeng (kapa mohlala) se hatelitsoeng ka lehlabathe le li-additives ho etsa li-castings tsa ho qetela tsa tšepe. Mohlala o tlosoa ka mor'a hore hlobo kapa maikutlo a thehoe, 'me tšepe e hlahisoa ka mokhoa oa ho matha ho tlatsa sekoti. Lehlabathe le tšepe lia aroloa 'me li-castings lia hloekisoa le ho phethoa bakeng sa ho romelloa ho bareki.
3 - Ho Lahlela Lehlabathe ho sebelisetsoa Eng?
Lisebelisoa tsa hlobo ea lehlabatheli sebelisoa haholo ho aliindasteri tse fapanengle lisebelisoa tsa mochini, haholo-holo bakeng sa li-castings tse kholo empa ka bongata bo hlokahalang. Ka lebaka la litšenyehelo tse tlase tsa nts'etsopele ea lisebelisoa le mohlala, o ka tsetela litšenyehelo tse lekaneng ho hlobo. Ka kakaretso, ho lahla lehlabathe ke khetho ea pele bakeng sa mechini e boima joalo ka literaka tse boima, likoloi tse tsamaisang thepa, metjhini ea kaho, li-valve, lipompo le lipompo.litsamaiso tsa hydraulic. Haholo-holo, theli-ductile tsa lehlabathe la tšepeli sebelisoa haholo bakeng sa liindasteri tsa sejoale-joale.
4 - Melemo ea ho Lahlela Lehlabathe ke Efe?
✔ Theko e tlase ka lebaka la thepa ea eona ea hlobo e theko e tlaase le e ka sebelisoang hape le lisebelisoa tse bonolo tsa tlhahiso.
✔ Mefuta e mengata ea boima ba yuniti ho tloha ho 0.10 kg ho isa ho 500 kgs kapa ho feta.
✔ Sebopeho se fapaneng ho tloha ho mofuta o bonolo ho isa ho o rarahaneng.
✔ E loketse litlhoko tsa tlhahiso ea bongata bo fapaneng.
5
Ka kakaretso, litšepe le li-alloys tse ngata tse nang le ferrous le nonferrous li ka lahleloa ka ho lahla lehlabathe. Bakeng sa lisebelisoa tsa tšepe,tšepe e entsoeng ka bohlooho, tšepe e entsoeng ka ductile, tšepe ea carbon,tšepe ea motsoako, tšepe ea lisebelisoa hammoho lemetsoako ea tšepe e sa hloekanghangata di tshelwa. Bakeng sa lits'ebetso tse nonferrous, boholo ba Aluminium, Magnesium,Li-alloys tse entsoeng ka koporole lisebelisoa tse ling tse nonferrous ka lahleloa, ha a ntse aAluminium le motsoako oa eonake tse atileng ka ho fetesisa ka ho lahla lehlabathe.
5
Mamello ea ho lahla e arotsoe ka Dimensional Casting Tolerances (DCT) le Geometrical Casting Tolerances (GCT). Setsi sa rona se ka thabela ho bua le uena haeba u na le kopo e khethehileng mabapi le mamello e hlokahalang. Mona ho tse latelang ke kakaretso ea tolerances grade eo re ka e fihlelang ka ronaho lahla lehlabathe le letala, ho lahla hlobo ea khetla le ho chesoa ha lehlabathe le sa bake la furan:
✔ DCT Kereiti ka Green Sand Casting: CTG10 ~ CTG13
✔ DCT Kereiti ka Shell Mold Casting kapa Furan Resin Sand Casting: CTG8 ~ CTG12
✔ Kereiti ea GCT ka Green Sand Casting: CTG6 ~ CTG8
✔ Kereiti ea GCT ka Shell Mold Casting kapa Furan Resin Sand Casting: CTG4 ~ CTG7
7 - Mefuta ea Lehlabathe ke Eng?
Mefuta ea lehlabathe e bolela mekhoa ea ho bōpa e entsoeng ka lehlabathe le letala kapa lehlabathe le omileng. Litsamaiso tsa lehlabathe li koahela haholo lebokose la lehlabathe, li-spures, ingates, risers, li-cores tsa lehlabathe, lehlabathe la hlobo, li-binders (haeba li le teng), lisebelisoa tse hanyetsang le likarolo tse ling tsohle tse ka khonehang tsa hlobo.