Coated jecha goko kukanda muChina kukanda kambani.
Munguva yeganda muforoma kukanda, chekutanga tinofanirwa kugadzira mapatani maererano nezvinodiwa nevatengi uye vanodhirowa, pamwe nekutarisa mvumo yekukanda. Tisati tagadzira iyo yekukanda muforoma uye musimboti, jecha rakaputirwa rakafukidzwa ne solid resin firimu pamusoro penzvimbo dzejecha. Iyo jecha rakafukidzwa rinodaidzwa zvakare kunzi ganda (musimboti) jecha. Iyo tekinoroji maitiro ndeyekusanganisa michina yeupfu thermosetting phenolic muti nejecha mbishi uye kusimbisa kana uchipisa. Yakagadzirwa kuva jecha rakaputirwa nekushandisa thermoplastic phenolic resin pamwe neanodzora kurapa mumiririri (senge urotropine) uye girizi (senge calcium stearate) kuburikidza neimwe nzira yekupfeka. Kana jecha rakaputirwa radziirwa, dutu rakaputirwa pamusoro pejecha rinonyungudika. Pasi pechiito cheboka re methylene rakaora neMaltropine, resini yakanyungudutswa inoshanduka nekukurumidza kubva pachigadziko chine mutsetse kuenda kune risingapindike chimiro chemuviri kuitira kuti jecha rakafukidzwa rigosimbiswa uye riumbike. Pamusoro peiyo yakawandisa yakaoma granular fomu yejecha rakafukidzwa, kune zvakare yakanyorova uye viscous yakavharwa jecha.
Tichienzanisa nedzimwe nebwe jecha, zvemapuranga jecha Kudzingwa ane zvinotevera hunhu
1) Iine simba rakakodzera kuita. Iyo inogona kusangana nezvinodiwa zveiyo yepamusoro-simba goko musimboti jecha, yepakati-simba inopisa-bhokisi jecha, uye yakaderera-simba isina-ferrous chiwanikwa alloy jecha.
2) Yakanyanya fluidity, yakanaka kuumbwa kwejecha musimboti uye yakajeka pepa rehurukuro, iyo inogona kuburitsa yakanyanya kuomarara jecha cores, senge yemvura jekete jecha cores senge humburumbira misoro uye muchina miviri.
3) Iyo yepamusoro yepamusoro yejecha musimboti wakanaka, compact uye haina kusununguka. Kunyangwe kana kupfekedzwa kushoma kana kusipo, zviri nani pamusoro pehunhu hwe castings zvinogona kuwanikwa. Iko kwehunyanzvi kurongeka kweanokanda anogona kusvika CT7-CT8, uye kumeso kusimba Ra anogona kusvika 6.3-12.5μm.
4) Kugumbuka kwakanaka, kunoenderana nekukanda kuchenesa uye kugadzirisa chigadzirwa kuita
5) Iyo jecha musimboti haisi nyore kupinza hunyoro, uye simba rekugara-kwenguva refu hazvisi nyore kudzikira, zvinoenderana nekuchengetedza, kutakura uye kushandisa
Mukugadzira pezvakaitwa kuti zvemapuranga jecha muforoma (makirisito) kugadzira kuti goko Kuumbwa Kudzingwa:
1. Iyo yekutanga maitiro ekugadzira akafukidzwa jecha muforoma (musimboti) ndeiyi: pafiripi kana kuridza jecha → kutakura → kubuda kwejecha → kuomesa → musimboti (muforoma) zvichingodaro.
1) Tendeuka kana kuridza jecha. Ndokunge, jecha rakaputirwa rinodururwa pahombodo yeganda kana kuputirwa mubhokisi repakati kugadzira goko kana ganda remukati.
2) Encrustation. Iyo hukobvu hweshell layer inodzorwa nekugadzirisa iyo tembiricha yekupisa uye nguva yekubata.
3) Kubuda kwejecha. Tilt the mold and the core box to make the unreacted coated sand to fall from the heated shell surface, and collect it for reuse. Kuitira kuti zvive nyore kubvisa iyo isina kuvharika yakavharwa jecha, kana zvichidikanwa, mechina nzira yekuzunza kumashure nekudzoka inogona kugamuchirwa.
4) kuomesa. Munzvimbo yekupisa, kuitira kuti ukobvu hwegobvu huwedzere kuita yunifomu, ita kuti ribatanidze nepamusoro peganda rinopisa mukati menguva yakati kuti kuti iwedzere kuomesa.
5) Tora musimboti. Tora rakaomarara ganda chimiro uye goko musimboti kunze kweforoma uye yepakati bhokisi.
