Semaitiro echinyakare ekugadzira, yakavharwa jecha process ichiri pachinzvimbo chakakosha mukugadzira kugadzirwa.Kunyangwe furan musimboti wekugadzira maitiro, kutonhora kwepakati kugadzira maitiro uye mamwe maitiro ari kuramba achigadzira uye nekushandisa, musimboti wekugadzira maitiro uchiri kushandiswa zvakanyanya mumaindasitiri akasiyana siyana ekukanda nekuda kwekunaka kwemvura, kusimba kwepamusoro uye kugadzikana kwekupisa, pamwe nenguva yakareba yekuchengetedza.Zvichiri kunetsa kutsiva mune mamwe maindasitiri senge hydraulic parts, turbine shells uye mamwe epamusoro-ekupedzisira maindasitiri ekukanda.
Hunhu:
kushanda nesimba kwakakodzera;yakanaka fluidity, zviumbwa zvejecha uye jecha cores anogadzirwa ane akajeka contours uye dense chimiro, uye anogona kugadzira yakaoma jecha cores;iyo yepamusoro yemhando yejecha mold (musimboti) yakanaka, kushata kwepamusoro kunogona kusvika kuRa = 6.3 ~ 12.5μm, uye kurongeka kwedimensional kunogona kusvika CT7 ~ CT9 level;kuparara kwakanaka, uye makanda ari nyore kuchenesa.
Chikamu chekushandisa
Inogona kushandiswa kugadzira zvese zvekukanda mold uye jecha cores.Iyo molds kana cores inogona kushandiswa pamwe chete nemumwe kana nemamwe majecha molds (cores);inogona kushandiswa kwete chete kukanda kwesimbi yesimbi kana kukanda pasi-pasi, asiwo kukanda jecha resimbi uye inopisa centrifugal casting;inogona kushandiswa kwete chete pakugadzirwa kwesimbi yakakandwa uye isina-ferrous alloy castings, asiwo pakugadzirwa kwesimbi castings.
composition
Kazhinji inoumbwa nezvinhu zvinoramba, zvinosungirirwa, zvinorapa, mafuta ekuzora uye zvimwe zvinowedzera.
(1) Refractory zvinhu ndizvo zvikamu zvikuru zvayo.Zvinodiwa zvezvinhu zvekuramba ndezvi: high refractoriness, low volatiles, zvidiki zvakatenderedza, yakasimba, etc. Natural scrubbed silica sand inowanzoshandiswa.Zvinodiwa zvejecha resilica ndezvi: high SiO2 content (cast iron and non-ferrous alloy castings inoda zvinopfuura 90%, uye zvikamu zvesimbi zvinoda kupfuura 97%);madhaka haapfuuri 0.3% (yejecha rekukweshwa)–[madhaka ejecha rakagezwa ari mashoma pane;saizi yechikamu ① yakagoverwa pa3 kusvika ku5 nhamba dziri padyo nesefa;chimiro chechidimbu chakatenderedza, uye iyo angular factor haifanirwe kunge yakakura kupfuura 1.3;iyo acid inoshandiswa kukosha haisi pasi pe5ml.
(2) Phenolic resin inowanzoshandiswa sebhainda.
(3) Hexamethylenetetramine inowanzoshandiswa semushonga wekuporesa;calcium stearate inowanzo shandiswa semafuta ekuzora, ayo anoshandiswa kudzivirira kubva mukusangana uye kuwedzera fluidity.Basa guru rekuwedzera nderokuvandudza kushanda kwejecha rakaputirwa.
(4) Basic ratio yeComponent Ratio (chikamu chechikamu,%) Tsanangudzo: Jecha mbishi 100 Kukwesha jecha, Phenolic resin 1.0-3.0 (uremu hwejecha mbishi), Hexamethylenetetramine (aqueous solution 2) 10-15 (uremu hweresin), Calcium stearate 5-7 (kurema kweresin), Additives 0.1-0.5 (kurema kwejecha mbishi).1:2) 10-15 (kurema kweresin), Calcium stearate 5-7 (uremu hweresin), Additives 0.1-0.5 (huremu hwejecha mbishi).
Nzira yekugadzira
Iyo nzira yekugadzirira inonyanya kusanganisira kutonhora kunotonhora, kupisa kunopisa uye kupisa kupisa.Parizvino, kugadzirwa kunenge kwese kunotora kupisa kunopisa.Iyo inopisa yekuputira maitiro ndeyekupisa jecha mbishi kune imwe tembiricha, uye wozosanganisa uye kusanganisa neresin, urotropine aqueous solution uye calcium stearate zvakateerana, uye wozotonhorera, kupwanya uye skrini.Nekuda kwekusiyana kwemaitiro, kusanganisa maitiro kwakasiyana.Parizvino, kune akawanda marudzi emitsara yekugadzira muChina.Kune angangoita 2000 ~ 2300 semi-otomatiki mitsara yekugadzira ine manyore yekudyisa, uye kune angangoita makumi mashanu anodzorwa nemakomputa akazara otomatiki mitsara yekugadzira, iyo zvinobudirira inovandudza kugadzira uye kugadzikana kwechigadzirwa.Semuyenzaniso, iyo otomatiki yekuona mutsara yekugadzira ye xx Casting Co., Ltd. ine yekudyisa nguva yekudzora kurongeka kwe 0.1 sekondi, yekudziya yekudzora tembiricha iko kwe1/10 ℃, uye mamiriro ekusanganisa jecha anogona kucherechedzwa nguva dzese kuburikidza nevhidhiyo. , ine hunyanzvi hwekugadzira hwematani matanhatu paawa.
Zvakanakira nzira
Excellent fluidity
Yakaputirwa neresin yakasimba uye inoita sejecha rakaoma.Yakanakisa fluidity ndiyo yakakura mukana wayo, iyo inonyanya kukodzera kune yakaoma uye diki jecha cores.
Yakanakisa yepamusoro mhando yejecha core
Iyo inoumbwa nekuputika kwepfuti, uye pamusoro peiyo jecha musimboti wakaomeswa uye wakatsetseka, izvo zvinogona kunyatso kuvandudza kupedzisa kwepamusoro kwekukanda.
Mutengo wakaderera wekugadzira shell core
Iyo ine yakakwira yekunyungudika uye inogona kushandiswa kugadzira shell core, ine kushoma kwejecha kushandiswa, mutengo wakaderera uye nani kufema kwemhepo.
Simba rakakwirira uye kugadzikana kwekupisa
uchishandisa thermoplastic phenolic resin, ine simba repamusoro uye kugadzikana kwekupisa, izvo zvinopa iyo yakasarudzika mabhenefiti mukushandiswa kwezvimwe zvikamu zvakakora uye zvakakura.
Nguva yakareba yekuchengetedza yejecha core
Alkaline phenolic resin inoshandiswa mujecha rakavharwa ndeye hydrophobic, iyo jecha musimboti ine yakanaka kunyorova, hapana yakakosha inodiwa munzvimbo yekuchengetera, uye hapana kuderera kukuru kwesimba mushure mekuchengetedza kwenguva refu.
Yakasiyana-siyana yekushandisa
Coated sand core inokodzera kukanda maitiro ezvese simbi zvinhu.
If you want to know more about shell mold casting process, pls feel free to contact lydia@welongchina.com.
Nguva yekutumira: Jun-13-2024
