Cast alloy simbi inofanirwa kushandiswa kana simba rekukanda richikwira uye kushandiswa kwesimbi yakakandwa haigone kuita zvinodiwa. Nekudaro, iyo fluidity yesimbi yakanyungudutswa yesimbi yakanyungudutswa haina kunaka seye simbi yakakandwa, saka ukobvu hwekudurura chimiro hachifanirwe kuve chidiki uye chimiro hachifanirwe kunge chakaoma. Kana iyo silicon yemukati ichidzorwa pamuganho wepamusoro, iyo fluidity yesimbi yakanyungudutswa inogona kuvandudzwa.
Resin yakavharwa jecha shell mold kukandainzira iyo jecha rakavhenganiswa ne thermosetting resin inobvumirwa kusangana nesimbi inopisa pateni ndiro, kuitira kuti goko rakatetepa uye rakasimba rekuumbwa riumbwe rakatenderedza pattem. Zvadaro goko rinobviswa kubva pamuenzaniso uye cope uye kudhonza zvinobviswa pamwe chete uye zvinochengetwa muflask ine inodiwa yekudzosera zvinhu uye simbi yakanyungudutswa inodururwa muforoma.
Kazhinji, jecha rakaoma uye rakanaka risina zvachose ivhu rinoshandiswa kugadzira jecha rekuumba shell. Saizi yezviyo ichasarudzwa zvinoenderana nepamusoro pekupedzisira inodiwa panemetal astings. Kunyanya kutsetseka saizi yezviyo inoda huwandu hwakawanda hweresin, izvo zvinoita kuti mold idhure.
Iwo maresin ekugadzira anoshandiswa mukuumbwa kwegoko anonyanya kupisa resins, ayo anoomeswa zvisingaite nekupisa. Mishonga inonyanya kushandiswa ndeye phenol formaldehyde resins. Yakasanganiswa nejecha, vane simba rakakwirira kwazvo uye kudzivisa kupisa. Iyo phenolic resins inoshandiswa mukuumbwa kwegoko kazhinji ndeyemhando mbiri dzenhanho, kureva kuti, resin ine yakawandisa phenol uye inoita senge thermoplastic material. Panguva yekuputira nejecha resin inosanganiswa necatalyst yakadai sehexa methylene tetramine muchikamu che14 kusvika 16% kuitira kukudziridza maitiro ekugadzirisa thermosetting. Kupisa tembiricha yeidzi ingangoita 150 C uye nguva inodiwa ingave 50 kusvika 60 s.
Zvakanakira zveResin Coated Sand Shell Mold Casting:
1. Resin Coated Sand Shell-mold castings kazhinji ine dimensional yakarurama pane kukanda jecha. Zvinokwanisika kuwana kushivirira kwe +0.25 mm yesimbi castings uye +0. 35 mm yegrey cast iron castings pasi pemamiriro ekushanda. Panyaya yepedyo yakashivirira magoko maforomo, munhu anogona kuiwana muhupamhi hwe +0.03 kusvika +0.13 mm kune chaiwo maapplication.
2. Nzvimbo yakapfava inogona kuwanikwa mushell castings. Izvi zvinonyanya kuwanikwa neiyo yakatsetseka saizi tsanga inoshandiswa. Iyo yakajairika huwandu hwekukasharara ndeyekurongeka kwe3 kusvika ku6 microns.
3. Draft angles, iyo yakaderera pane jecha castings, inodiwa muhombodo. Kudzikiswa kwemakona ekudhirowa kunogona kubva pa50 kusvika 75%, iyo inochengetedza zvakanyanya mutengo wezvinhu uye mutengo unotevera wekugadzira.
4. Dzimwe nguva, macores akakosha anogona kubviswa mukuumbwa kwegoko. Sezvo jecha riine simba rakawanda mold inogona kugadzirwa nenzira yekuti magonhi emukati anogona kuumbwa zvakanangana nekudiwa kwegomba cores.
5. Uyezve, zvikamu zvakatetepa zvikuru (kusvika ku 0.25 mm) yemhando yemhepo-yakatonhorera misoro ye cylinder inogona kugadzirwa nyore nyore neshell molding nekuda kwesimba rakakwirira rejecha rinoshandiswa pakuumba.
6. Permeability yehoko yakakwirira uye naizvozvo hapana gasi inclusions inoitika.
7. Ijecha shoma shoma rinoda kushandiswa.
8. Michina inogoneka nyore nyore nekuda kwekugadzirisa kuri nyore kunobatanidzwa mukuumbwa kwegoko.
Raw Materials for Resin Coated Sanding Casting process:
• Simbi yekukanda: Grey Cast Iron, Ductile Cast Iron.
• Kanda Carbon Steel uye Alloy Steel: Low Carbon Steel, Medium Carbon Steel uye High Carbon Steel kubva kuAISI 1020 kusvika kuAISI 1060; 20CrMnTi, 20SiMn, 30SiMn, 30CrMo, 35CrMo, 35SiMn, 35CrMnSi, 40Mn, 40Cr, 42Cr, 42CrMo... nezvimwewo pakukumbira.
• Kanda Stainless Steel: AISI 304, AISI 304L, AISI 316, AISI 316L uye imwe giredhi resimbi isina tsvina.
• Kanda Aluminium Alloys.
• Brass & Copper.
• Zvimwe Zvishandiso neMitemo pakukumbira
▶ Resin Yakavharwa Nejecha Kukandira Matanho:
• Kukura Kwepamusoro: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg - 100 kg
• Kwegore Kukwanisa: 2,000 matani
• Kushivirira: Pakukumbira.
▶ KuongororaResin Coated Sand Castings:
• Spectrographic uye manual quantitative analysis
• Metallographic analysis
• Brinell, Rockwell uye Vickers kuoma kwekuongorora
• Kuongororwa kwemidziyo yemagetsi
• Low uye zvakajairika tembiricha kukanganisa kuedza
• Kuongororwa kweutsanana
• UT, MT uye RT kuongorora
▶ Resin Yakavharwa Nejecha Maitiro ekukanda:
✔ Kugadzira Metal Pateni. Iyo pre-yakavharwa resin jecha inoda kupiswa mumapateni, saka mapatani esimbi ndiwo anodiwa ekushandisa kugadzira goko rekuumba castings.
✔ Kugadzira Pre-coated Sand Mold. Mushure mekuisa simbi mapatani pamushini wekuumba, iyo pre-yakavharwa resin jecha inopfurwa mumapateni, uye mushure mekupisa, resin yekupfekedza ichanyungudutswa, ipapo molds yejecha inova yakasimba jecha goko uye cores.
✔ Kunyungudutsa iyo Cast Metal. Uchishandisa masimbi ekupinza, zvinhu zvacho zvaizonyungudutswa kuita mvura, zvino maumbirwo emakemikari esimbi yemvura anofanirwa kuongororwa kuti aenderane nenhamba dzinodiwa uye muzana.
✔ Kudira Simbi. Kana iyo simbi yakanyunguduka inosangana nezvinodiwa, zvino ichadururwa muhombodo dzeganda. Zvichienderana neakasiyana mavara ekugadzira dhizaini, molds magoko anovigwa mujecha rakasvibira kana kurongedzwa nematanho.
✔ Kupfura Kuputika, Kukuya uye Kuchenesa. Mushure mekutonhodzwa uye kusimba kwekukanda, makwikwi, masuwo kana simbi yakawedzerwa inofanira kugurwa uye kubviswa. Ipapo masimbi anocheneswa nejecha rekupenengura kana michina yekupfutidza. Mushure mekugaya musoro wegedhi uye mitsara yekuparadzanisa, zvikamu zvakapedzwa zvekukanda zvaizouya, zvakamirira mamwe maitiro kana zvichidiwa.
▶ Post-Casting Maitiro
• Kubvisa & Kuchenesa
• Shot Blasting / Jecha Peening
• Kupisa Kurapa: Kugadzirisa, Kudzima, Kupisa, Carburization, Nitriding
• Surface Treatment: Passivation, Andonizing, Electroplating, Hot Zinc Plating, Zinc Plating, Nickel Plating, Polishing, Electro-Polishing, Painting, GeoMet, Zintec.
• CNC Machining: Kushandura, Kugaya, Lathing, Drilling, Honing, Grinding.
▶ Chikonzero Nei UchisarudzaRMC FoundryyeShell Mold Casting Components?
✔ Kururamisa uye nekudaro kushandiswa kwezvinhu kwakakwira. Iwe uchawana mambure kana padhuze-neti-chimiro zvigadzirwa mushure megoko rekukanda kukanda, zvichienderana nezvinodiwa zvevashandisi vekupedzisira, hapazove kana kana kushoma machining maitiro anodiwa.
✔ Kuita kurinani kwepamusoro. Nekuda kwezvinyo-tekinoroji zvekugadzira, izvo zvinokandwa kubva kugoko remugodhi zvine yakanyanya kunaka uye yakakwirira yekurongeka kwepamusoro.
✔ Sarudzo yakanaka yakadzikama uchienzanisa nekukanda jecha nekudyara. Iyo shell molding casting ine kuita zvirinani uye pamusoro pane kukanda jecha, nepo iine mutengo wakaderera pane chaiyo yekukanda mari.
