Vacuum casting ine mamwe mazita akawanda senge vacuum sealed casting, negative pressure jecha kukanda,V process castinguye V kukanda, nekuda kwekumanikidza kwakashata kunoshandiswa kugadzira mold yekukanda. Izvo zvakakosha kuti uongorore maitirwo ekukanda eiyo yakakwirira chaiyo yakaonda madzirofkukanganisa simbi kukanda zvikamunekuti maitiro acho anobatsira mukuderedza kushandiswa kwesimba, kuchengetedza zvigadzirwa uye kuderedza huremu hwemuchina. Kuzadzisa zvinangwa izvi, nzira dzakawanda dzekukanda dzakagadzirwa. Vacuum-yakaiswa chisimbiso yekuumba maitiro, iyo V-maitiro mapfupi, inoshandiswa zvakanyanya kugadzira simbi uye simbi castings ine madziro akatetepa, yakakwira chaiyo uye yakatsetseka pamusoro. Nekudaro, iyo vacuum casting process haigone kushandiswa kudurura metal castingsine diki madziro ukobvu, nekuti iyo yemvura simbi inozadza mugomba reforoma inotsamira pane chete static yekumanikidza musoro muV-maitiro. Uyezve, maitiro acho haakwanise kuburitsa ma castings anoda yakanyanya dhimensioni kurongeka nekuda kweiyo inodzivirirwa yekumanikidza kusimba kwe mold.
Kuti tivandudze kugona kwekuzadza kwesimbi yakanyungudutswa uye kuwedzera simba rekumanikidza reforoma, isu takagadzira nzira nyowani yekukanda inodaidzwa kuti vacuum-yakavharwa mold kukanda pasi pekumanikidzwa. Al kunyangwe iyi nzira yekukanda yakavakirwa paV-maitiro, akasiyana nekuti mukuita iyo simbi yemvura inozadza uye inoomesa muvacuum-yakavharwa mold pasi pekumanikidzwa kwakanyanya. Nekushandisa iyo nzira, simbi yekukanda nemadziro akatetepa, yakatsetseka pamusoro uye zviyero zvakaringana zvakagadzirwa zvinobudirira.
Iyo mold yakashandisa iyi itsvavacuum casting processyakafanana neiyo inoshandiswa kune yakajairika V-maitiro. Kana mold yagadzirwa, inoiswa mumudziyo. Nekubvisa mhepo kuburikidza nekuneta pombi, iyo vacuum level mu mold inogona kuchengetedzwa pane yakatarwa kukosha. Iyo simbi yemvura inodururwa muladhi mukati memudziyo. Ipapo mudziyo unonamwa; uye simba remhepo mumudziyo rinowedzerwa kune yakasarudzwa kukosha nekupomba mweya kuburikidza nemugero. Mushure meizvozvo, iyo simbi yemvura inodururwa mugomba rekuumbwa nekushandura rocker ruoko. Munguva yekuzadza uye kusimba, mhepo iri mukati me mold inoramba ichisvetwa kuburikidza nemapombi uye mold inochengetwa mune vacuum state. Pano, simbi yemvura inozadza uye inoomesa pasi pekumanikidza kwakanyanya.
Kazhinji kutaura, mold inogona kuumbwa uye kuchengetedzwa kubva pakudonha kana musiyano wekumanikidza imore kupfuura 50 kPa. Basa rekuvhara sikirini rinobatanidza mhango ye mold kune yekare kusimudzira simbi yemvura inoyerera ichipinda mugomba nekukweva gasi kana mweya kubva mumhango yeforoma kuburikidza nejecha rakaoma muforoma. Kana paine chidzitiro chemhepo chakadaro, musiyano wekumanikidzwa unoderera panguva yekudurura; asi ichiri yakakwirira kudarika 150 kPa, yakakura zvikuru kupfuura 50 kPa. Naizvozvo, iyo vent skrini haiparadze basa refirimu repurasitiki pane cope mold.
Naizvozvo PV maitiro anogona kushandiswa kugadzira dzakatetepa madziro cast iron castings uyecast steel castingsnounyanzvi hwepamusoro. Mukuita kugadzirwa kwekugadzira dzimwe nzira dzakajairwa dzinoshandiswa kuvandudza kugona kwekuzadza kwesimbi yemvura, kusanganisira kuwedzera static pressure yemusoro wesimbi yemvura, kuwedzera tembiricha yekuumbwa uye kuwedzera kumanikidza kwekuzadza. Iko kuderera kwekumanikidza mu m old cavity zvakare inzira inoshanda yekuwedzera kugona kuzadza.
Iyo mold inomanikidza simba mune iyi nyowani mhando vacuum casting process inobuda kubva mukumanikidzwa musiyano pakati pemukati nekunze kwe mold. Kukura kwemusiyano wepressure, kukweshana kukuru pakati petsanga dzejecha, uye zvakanyanya kuoma kufamba kwetsanga dzejecha dzichipesana, zvichitungamira kune yakakwira mold yekumanikidza simba. Yakakwira yekumanikidza simba inobatsira mukugadzira castings ine yakakwira dimension kurongeka uye kushoma kana kusakanganisa kukanda.
Kunyangwe nzira dzakadai sekuwedzera binder zvemukati, kubika girini mold uye kushandisa resin yakasungwa jecha zvese zvinogona kuvandudza mold compressive simba, ivo vanozowedzerawo mutengo wekugadzira zvakanyanya. Pasi pekushisa kwepamusoro firimu repurasitiki riri pamusoro pevhu remuvhu rinonyorovesa uye rinonyunguduka, ipapo firimu racho rinoputika uye rinopararira mujecha refodya pasi pekuita kwekumanikidza kusiyana, uye mukuita mold inorasikirwa nekukwanisa kwemhepo zvishoma nezvishoma. Maitiro akadaro anotumidzwa sekutsva-kurasikirwa kwemufirimu wepurasitiki. Zvinhu zvakawanda zvinokanganisa kukurumidza kwekupisa-kurasikirwa kwefirimu repurasitiki, senge rudzi uye ukobvu hwefirimu repurasitiki, saizi yekukanda, mutsauko wekumanikidza pakati pemukati nekunze kwe mold, tembiricha yesimbi yakanyungudutswa yesimbi uye kana paine coating. layer pafirimu repurasitiki. Zvisinei, kana chifukidzo chakapfapfaidzwa pafirimu, kukurumidza kwekupisa-kurasikirwa kunoderera zvakanyanya uye mold ine yakanaka proof proof.
Nguva yekutumira: Jan-24-2021