Insimbi ye-cast alloy kufanele isetshenziswe lapho amandla okubunjwa aphezulu futhi ukusetshenziswa kwe-cast iron kungakwazi ukuhlangabezana nezidingo. Kodwa-ke, i-fluidity yensimbi encibilikisiwe yensimbi eyinsimbi ayilungile njengaleyo ye-cast iron, ngakho-ke ubukhulu besakhiwo sokuthulula akumele bube buncane kakhulu futhi ukuma akufanele kube nzima kakhulu. Uma okuqukethwe kwe-silicon kulawulwa emkhawulweni ongaphezulu, uketshezi lwensimbi encibilikisiwe lungathuthukiswa.
Ukubunjwa kwesikhunta se-sand shell resin camerakuyinqubo lapho isihlabathi esixutshwe ne-thermosetting resin sivunyelwa ukuthi sihlangane nepuleti lephethini yensimbi eshisayo, ukuze kwakheke igobolondo lesikhunta elincanyana neliqinile elizungeze i-pattem. Khona-ke igobolondo liyasuswa ephethini futhi i-cope kanye ne-drag ikhishwa ndawonye futhi igcinwe ku-flask enezinto ezidingekayo zokusekela futhi insimbi encibilikisiwe ithululelwa esikhunjeni.
Ngokuvamile, isihlabathi esomile nesicolekile esingenalo ubumba ngokuphelele sisetshenziselwa ukulungisa isihlabathi sokubumba igobolondo. Usayizi okusanhlamvu okufanele akhethwe kuncike isiphetho ebusweni oyifunayoama-astings ensimbi. Usayizi wokusanhlamvu omuhle kakhulu udinga inani elikhulu le-resin, okwenza isikhunta sibize.
Ama-synthetic resins asetshenziswa ekubumbeni igobolondo empeleni ama-thermosetting resins, aba lukhuni ngokungenakulungiseka ngenxa yokushisa. Ama-resin asetshenziswa kakhulu ama-phenol formaldehyde resins. Kuhlanganiswe nesihlabathi, banamandla aphezulu kakhulu nokumelana nokushisa. Ama-phenolic resins asetshenziswa ekubumbeni igobolondo ngokuvamile awohlobo lwezigaba ezimbili, okungukuthi, inhlaka ine-phenol eyeqile futhi isebenza njengempahla ye-thermoplastic. Ngesikhathi sokumbozwa ngesihlabathi i-resin ihlanganiswa ne-catalyst efana ne-hexa methylene tetramine ngengxenye engaba ngu-14 kuya ku-16% ukuze kuthuthukiswe izici zokubeka ukushisa. Izinga lokushisa lokuphulukisa lalokhu lingaba ngu-150 C kanti isikhathi esidingekayo singaba ngamasekhondi angama-50 kuye kwangama-60.
Izinzuzo ze-Resin Coated Sand Shell Mold Casting:
1. Ukubunjwa kwesikhunta Sesihlabathi Esinamekwe Ngeresin ngokuvamile kunembe kakhulu kunokwakheka kwesihlabathi. Kungenzeka ukuthola ukubekezelelana kwe-+0.25 mm ye-castings yensimbi kanye ne-+0. 35 mm kokusakazwa kwensimbi empunga ngaphansi kwezimo ezijwayelekile zokusebenza. Endabeni yesikhunta segobolondo esibekezeleleka eduze, umuntu angasithola kububanzi obusuka ku-+0.03 ukuya ku-+0.13 mm ngezinhlelo ezithile zokusebenza.
2. Indawo ebushelelezi ingatholakala ekubunjweni kwamagobolondo. Lokhu kutholakala ngokuyinhloko ngosayizi omncane wokusanhlamvu osetshenzisiwe. Ibanga elijwayelekile lobumahhadlahhadla liku-oda lama-microns angu-3 ukuya kwangu-6.
3. Ama-engeli asalungiswa, aphansi kune-castings yesihlabathi, ayadingeka ekubunjweni kwamagobolondo. Ukwehliswa kwama-engeli asalungiswa kungase kube kusuka ku-50 kuya ku-75%, okusindisa kakhulu izindleko zempahla kanye nezindleko zomshini ezilandelayo.
4. Ngezinye izikhathi, ama-cores akhethekile angase akhishwe ekubunjweni kwegobolondo. Njengoba isihlabathi sinamandla amakhulu isikhunta singaklanywa ngendlela yokuthi izimbobo zangaphakathi zingakheka ngokuqondile ngesidingo sezinhlamvu zegobolondo.
5. Futhi, izingxenye ezincane kakhulu (kufika ku-0.25 mm) zohlobo lwamakhanda e-cylinder apholile emoyeni angenziwa kalula ngokubumba igobolondo ngenxa yamandla aphezulu esihlabathi asetshenziselwa ukubumba.
6. Ukungena kwegobolondo kuphezulu ngakho-ke akukho ukufakwa kwegesi okwenzekayo.
7. Isihlabathi esincane kakhulu esidinga ukusetshenziswa.
8. Umshini ungenzeka kalula ngenxa yokucubungula okulula okuhilelekile ekubumbeni igobolondo.
Izinto Zokusetshenziswa Zokusetshenziswa Kwenqubo Yokusakaza Ngesihlabathi Efakwe I-resin:
• I-Cast Iron: I-Grey Cast Iron, I-Ductile Cast Iron.
• I-Cast Carbon Steel ne-Alloy Steel: I-Low Carbon Steel, i-Medium Carbon Steel kanye ne-High Carbon Steel kusukela ku-AISI 1020 kuya ku-AISI 1060; 20CrMnTi, 20SiMn, 30SiMn, 30CrMo, 35CrMo, 35SiMn, 35CrMnSi, 40Mn, 40Cr, 42Cr, 42CrMo... njll ngesicelo.
• I-Cast Stainless Steel: I-AISI 304, i-AISI 304L, i-AISI 316, i-AISI 316L nelinye ibanga lensimbi engagqwali.
• Ama-Aluminium Alloys asakazwayo.
• Ithusi nethusi.
• Ezinye Izinto kanye Namazinga ngokucelwa
▶ Amandla Okusakaza Isihlabathi Esimbozwe Ngeresin:
• Ubukhulu Usayizi: 1,000 mm × 800 mm × 500 mm
• I-Weight Range: 0.5 kg - 100 kg
• Amandla onyaka: amathani ayi-2,000
• Ukubekezelelana: Ngesicelo.
▶ UkuhlolaI-Resin Coated Sand Castings:
• Ukuhlaziywa kobuningi be-Spectrographic kanye nemanuwali
• Ukuhlaziywa kwe-Metallographic
• Ukuhlolwa kokuqina kukaBrinell, Rockwell kanye noVickers
• Ukuhlaziywa kwempahla yemishini
• Ukuhlolwa komthelela wezinga lokushisa eliphansi nelivamile
• Ukuhlolwa kwenhlanzeko
• Ukuhlolwa kwe-UT, MT kanye ne-RT
▶ Izinqubo zokusakazwa kwesihlabathi esimbozwe nge-resin:
✔ Ukwenza Amaphethini Ensimbi. Isihlabathi se-resin esinamekwe ngaphambili sidinga ukushisisa kumaphethini, ngakho-ke amaphethini ensimbi ayithuluzi elidingekayo ukwenza ukubunjwa kwegobolondo.
✔ Ukwenza Isikhunta Sesihlabathi Esifakwe Ngaphambili. Ngemuva kokufaka amaphethini ensimbi emshinini wokubumba, isihlabathi se-resin esandulelwe ngaphambili sizodutshulwa emaphethini, futhi ngemva kokushisa, ukugqoka kwe-resin kuzoncibilika, khona-ke isikhunta sesihlabathi sibe igobolondo lesihlabathi esiqinile kanye nama-cores.
✔ Ukuncibilikisa i-Cast Metal. Kusetshenziswa iziko lokungeniswa, izinto zingancibilika zibe uketshezi, bese ukwakheka kwamakhemikhali ensimbi ewuketshezi kufanele kuhlaziywe ukuze kufane nezinombolo ezidingekayo namaphesenti.
✔ Ukuthela Insimbi. Lapho insimbi encibilikisiwe ihlangabezana nezidingo, izothululelwa ezibunjeni zegobolondo. Ngokusekelwe ezinhlamvini ezihlukene zomklamo wokulingisa, isikhunta segobolondo sizongcwatshwa esihlabathini esiluhlaza noma sipakishwe ngezandlalelo.
✔ Shot Blasting, Grinding and Cleaning. Ngemva kokupholisa nokuqiniswa kwama-castings, izikhuphukeli, amasango noma insimbi eyengeziwe kufanele inqunywe futhi isuswe. Khona-ke insimbi izohlanzwa ngemishini yokuchaya isihlabathi noma imishini yokudubula. Ngemva kokugaya ikhanda le-gating kanye nemigqa yokuhlukanisa, izingxenye zokuphonsa eziqediwe zizofika, zilindele izinqubo ezengeziwe uma kudingeka.
▶ Inqubo yokusakazwa kwangemuva
• Ukukhipha imali nokuhlanza
• Ukuqhunyiswa Kokudubula / Ukupena Isihlabathi
• Ukwelashwa Kokushisa: Ukujwayela, Ukucisha, Ukushisa, I-Carburization, I-Nitriding
• Ukwelashwa kwendawo: Passivation, Andonizing, Electroplating, Hot Zinc Plating, Zinc Plating, Nickel Plating, Polishing, Electro-Polishing, Painting, GeoMet, Zintec.
• CNC Machining: Turning, Milling, Lathing, Drilling, Honing, Grinding.
▶ Kungani UkhethaI-RMC FoundryNgezingxenye Zokusakaza Ze-Shell Mold?
✔ Ukunemba ngakho-ke ukusetshenziswa okuphezulu kwempahla. Uzothola imikhiqizo enetha noma eseduze nenetha ngemuva kokubunjwa kwegobolondo, kuye ngezidingo zabasebenzisi bokugcina, ngeke kube khona noma kuncane kakhulu inqubo yokwenza imishini edingekayo.
✔ Ukusebenza okungcono kwendawo. Ngenxa yezinto zobuchwepheshe obusha bokubumba, ama-castings avela ekubunjweni kwamagobolondo anendawo enhle kakhulu futhi enemba ephakeme.
✔ Ukukhetha okuhle okunokulinganisela uma kuqhathaniswa nokusakazwa kwesihlabathi kanye nokutshalwa kwezimali. Ukubunjwa kwegobolondo kunokusebenza okungcono kanye nengaphezulu kunokusakaza kwesihlabathi, kuyilapho kunezindleko eziphansi kakhulu kunokunemba kokutshala imali.
