Resin jecha ijecha rinoumbwa (kana core sand) rakagadzirwa neresin sebhainda. Iyo resin yakavharwa jecha kukanda inonzi zvakareshell mold castingnekuti resin jecha mold inogona kusimba mugoko rakasimba mushure mekupisa kwepamhepo tembiricha (hapana-kubika kana kuzviomesa), izvo zvakasiyana negreen sand casting process. Kushandiswa kwefuran resin semusungiro wejecha rekuumbwa ishanduko huru mukuita kwejecha. Kubva pakatanga nzira iyi, yakakwezva kutarisisa kweindasitiri yekukanda uye yakakura nekukurumidza. Sezvo resin yekukanda mold (core) jecha binder, iyo yakasiyana-siyana uye hutano huri kuramba huchiwedzera, hunogona kuzadzisa zvinodiwa zvakasiyana-siyana zvekukanda alloys.
Nekuda kwekushandiswa kwejecha resin, akawanda matsva ekuumba (core) maitiro akaonekwa mushure meumwe, senge shell core (chimiro), inopisa core box, inotonhora core box, self-hardening jecha core, etc. Parizvino, kushandiswa. resin jecha rave rimwe remamiriro ekutanga ekugadzirwa kwehuwandu hwezvemhando yepamusoro castings. Mumajecha ekukanda maworkshop e-single-chidimbu uye kugadzirwa kwakawanda, kugadzirwa kwejecha cores uye jecha mold nejecha resin inzira yakajairika, uye budiriro yacho yave nekukurumidza zvakanyanya mumakore achangopfuura.
Zvakanakira zveResin Coated Sand Casting:
1. Iyo yekukanda ine yakanaka yemhando yepamusoro uye yakakwirira dimensional kurongeka;
2. Hapana chikonzero chekuomesa, ikoko kupfupisa kutenderera kwekugadzira;
3. Iyo resin sand mold casting process inochengetedza simba nekuti resin jecha mold (musimboti) ine simba rakawanda, mhepo yakanaka inopenya, mashoma ekukanda kukanganisa uye yakaderera kurambwa mwero;
4. Resin jecha rine mvura yakanaka uye iri nyore kubatanidza;
5. Kuparara kwakanaka, nyore kuzunungusa uye kuchenesa, zvakanyanya kuderedza kushanda nesimba.
Zvakaipa zveResin Sand Mold Casting process:
1. Nokuti saizi yejecha yakasvibirira, chimiro, sulfur dioxide content uye alkaline compounds zvinogona kuva nemigumisiro yakawanda pakuita kwejecha resin, zvinodiwa zvejecha rakasvibirira zvakakwirira;
2. Kupisa uye kunyorova kwenzvimbo yekushanda kune simba guru pakukurumidza kuoma uye kuoma kwesimba rejecha resin;
3. Kana ichienzaniswa nemabhainda emuchadenga, jecha reresin rine gasi rakakura;
4. Resin uye catalyst ine kunhuhwirira kunopisa, uye mhepo yakanaka mumusangano inodiwa;
5. Mutengo we resin wakakwirira kudarika jecha rakasvibirira.
Inonyanya kushandiswa resin jecha ndeyefuran resin kuzviomesa jecha. Furan resin yakavakirwa pafurfuryl doro uye inotumidzwa zita reyakasarudzika furan mhete muchimiro chayo. Panyaya yechimiro chayo, kune furfuryl alcohol furan resin, urea formaldehyde furan resin, phenolic furan resin uye formaldehyde furan resin. Furan resin inowanzo shandiswa sebhainda pakugadzirira resin inoomesa jecha mukugadzira. Furan resin inoshandiswa kuzvigadzika jecha ine yakawandisa yehuwandu hwefurfuryl doro, yakagadziridzwa resin kuchengetedza kuita, yakakwira yekupisa simba, asi yakawedzera mutengo.
Furan resin self-hardening jecha zvinoreva rudzi (core) jecha iro furan resin binder rinoitwa chemical reaction pasi pechiito checatalyst roomesa patembiricha. Furan resin jecha rinowanzo kuumbwa nejecha resin, furan resin, catalyst, additives, etc. Hunhu uye kushanda kwezvakasiyana-siyana zvigadzirwa zvichave nekukanganisa kukuru pakuita kwejecha resin uye kunaka kwekukanda, saka zvakakosha kwazvo zvakarurama sarudza zvakasiyana-siyana zvigadzirwa zvejecha resin.
Nguva yekutumira: Kurume-08-2021