Inqubo yokukhipha i-shell-mold yaziwa nangokuthi inqubo yokubumba igobolondo. Kuyinqubo esebenzisekayo yokubunjwa kwesikhunta esebenzisa isihlabathi esimbozwe inhlaka ukwenza isikhunta. Enqubweni yokubunjwa kwegobolondo isikhunta senziwa njengegobolondo. Isikhunta esincane noma esingenalutho sisetshenziswa ukuze isisindo sesikhunta sibe sincane futhi ukuphatha isikhunta kuba lula.
Ukwenza isikhunta esincanyana, i-phenolic resin ene-sengezo encane yesihlabathi se-silica isetshenziswa njengento yokubumba. Ukwenza i-shell-mold casting idinga ukusetshenziswa kwephethini yensimbi, ihhavini, ingxube ye-sand-resin, ibhokisi lokulahla kanye nensimbi encibilikisiwe.Ukubunjwa kwegobolondoivumela ukusetshenziswa kokubili izinsimbi ayoni kanye non-ayoni, ngokuvamile esetshenziswa izinsimbi ezincibilikisiwe kukhonainsimbi empunga, i-ductile cast iron, carbon steel,insimbi ye-alloy, insimbi engagqwali, ama-alloys e-aluminium nama-alloys ethusi.
Izinyathelo Ze-Shell Mold Casting
1. Ukudalwa kwephethini - Iphethini yensimbi enezicucu ezimbili yenziwa ngendlela yephethini oyifunayo edingekayo.
2. Ukudalwa kwesikhunta - Okokuqala, uhhafu wephethini ngayinye ushisiswe ku-175-370 ° C futhi umbozwe nge-lubricant ukuze kube lula ukuhlukana kalula nephethini eyenziwe. Okulandelayo, iphethini eshisayo iboshelwa ebhokisini lokulahla. Ibhokisi lokulahla lihlanekezelwe, okuvumela le ngxube ye-sand-resin ukuthi igqoke iphethini. Iphethini eshisayo ilapha ingxenye, manje eyenza igobolondo elizungeze iphethini. Uhhafu wephethini ngayinye kanye negobolondo elizungezile liyelapheka ukuze liqedwe kuhhavini bese igobolondo likhishwa kuphethini.
3. Ukuhlanganiswa kwesikhunta - Ama-halves amabili amagobolondo ahlanganiswa ndawonye futhi aboshelwe ngokuvikelekile ukuze enze isikhunta segobolondo esiphelele. Uma kukhona ama-cores adingekayo, afakwa ngaphambi kokuvala isikhunta. Khona-ke isikhunta segobolondo sifakwa eflaskini futhi sisekelwe ngezinto ezisekelayo.
4. Ukuthela - Isikhunta siboshelwe ndawonye ngokuvikelekile kuyilapho insimbi encibilikisiwe ithululwa isuka ebhentshini iye ohlelweni lokungena futhi igcwalise isikhunta.
5. Ukupholisa - Ngemva kokuba isikhunta sesigcwalisiwe, insimbi encibilikisiwe ivunyelwe ukupholisa futhi iqine ibe yisimo sokubunjwa okufunayo.
6. Ukususwa kokubunjwa - Ngemva kokuba insimbi encibilikisiwe ipholile, isikhunta siyaphulwa futhi ukubunjwa kuyasuswa. Izinqubo zokunquma nokuhlanza zenziwa ukuze kukhishwe noma iyiphi insimbi eyeqile ohlelweni lokuphakelayo kanye nokuhlukanisa izinhlayiya zesihlabathi ezincane esikhunjeni.
Izici Zenqubo Yokubumba I-Shell:
- • Enqubweni yokubumba igobolondo ukujiya kanye nesisindo sesikhunta sincane.
- • Izinga lokukhiqizwa kwesikhunta segobolondo liphezulu kakhulu.
- • Ngenxa ye-porosity ephansi yesikhunta, kufanele kusetshenziswe isikhuphukeli.
- • Kuwusizo emisebenzini eyisiyingi kuphela kanye ne-symmetrical.
- • Izimo eziyinkimbinkimbi kakhulu azikwazi ukwakhiwa kusetshenziswa indlela yokubunjwa kwegobolondo.
- • Le nqubo ikhiqiza ukulingisa okunembe kakhudlwana uma kuqhathaniswa nokunyeinqubo yokuphonsa isihlabathi.
- • Ama-engeli angaphansi angasetshenziswa.
Isikhathi sokuthumela: Sep-30-2021