1- Chii chinonzi Vacuum Casting?
Vacuum Casting inozivikanwawo seNegative Pressure Seal Casting, Yakaderedzwa Kudzvanya Kukanda kanaV Process Casting. Vacuum negative pressure casting imwe yemhando yekukandira jecha rakaoma uye inoda kushandiswa kwemidziyo yekubvisa mweya kuburitsa mweya mukati mekukanda mold, wobva washandisa mutsauko wekumanikidza pakati pemukati nekunze kwe mold kuvhara iyo inopisa firimu repurasitiki pane mapatani uye matemplate. Iyo mold yekukanda ichave yakasimba zvekukwanisa kumira nesimbi yakanyungudutswa panguva yekukanda. Mushure mekuwana vacuum casting mold, zadza bhokisi rejecha nejecha rakaoma risina binder, uye wobva wavhara pamusoro pejecha nefirimu repurasitiki, rinoteverwa nevhayumu kuti jecha rive rakasimba uye rakasimba. Mushure maizvozvi, bvisa mold, isa jecha cores, vhara mold kuti uite everthing kugadzirira kudururwa. Pakupedzisira, kukanda kunowanikwa mushure mokunge simbi yakanyungudutswa yatonhodzwa uye yasimbiswa.
2- Ndezvipi Zvakanakira Vacuum Casting?
1) Thevacuum castingsiva nehupamhi hwehupamhi hwechokwadi, yakajeka rondedzero uye yakatsetseka pamusoro.
2) Iko hakuna zvisungo, mvura uye zvinowedzera mujecha rekuumba, izvo zvinoita kuti jecha rive nyore.
3) Zviri nyore kuchenesa vacuum castings. Magasi mashoma anokuvadza anogadzirwa panguva yekukanda.
4) Iyo vacuum castings inogona kushandiswa pazvakasiyana-siyana zvemaindasitiri. Inogona kushandiswa kune imwechete-chidimbu diki kugadzirwa kwebatch pamwe nekugadzirwa kwakawanda, kunyanya mahombe uye epakati-saizi castings uye dzakatetepa-madziro castings anonyanya kukodzera pakukanda vacuum.
3- Ndeapi Masimbi uye Alloys Anogona Kukandwa neVacuum Casting?
• Grey Cast Iron, Ductile Cast Iron
• Carbon Steel: Low carbon, medium carbon and high carbon steel
• Cast Steel Alloys: Yakaderera alloy simbi, yakakwirira alloy simbi, inokosha alloy simbi
• Aluminium uye alloys avo
• Brass & Copper.
4- Ndeapi Maindasitiri Anoshandiswa Vacuum Castings?
Sezvataurwa pamusoro apa mune zvakanakira vacuum casting, iyo vacuum castings inogona kushandiswa pane akasiyana maindasitiri. Inogona kushandiswa kune imwechete-chidimbu diki kugadzirwa kwebatch pamwe nekugadzirwa kwakawanda, kunyanya mahombe uye epakati-saizi castings uye dzakatetepa-madziro castings anonyanya kukodzera pakukanda vacuum. Naizvozvo, vacuum castings inonyanya kushandiswamichina yekurima, hydraulic systems, njanji dzinotakura zvinhu, crane uye maindasitiri ekuvaka ngarava.
5- Ndezvipi Zvibvumirano Zvekukanda Zvingasvikwa neVacuum Casting process?
Munguva yekukanda vacuum, nekuti pamusoro peiyo modhi yakafukidzwa nefirimu repurasitiki, hapana chikonzero chekudedera kana kugogodza kana uchidhonza mold. Kusveta uye kudzvinyirira kwakashata kunoita kuti jecha rekuumbwa ribatane, uye kuoma kwejecha mold yakakwirira uye yakafanana. Pasi pekupisa kwesimbi yakanyungudutswa, gomba racho harisi nyore kukanganisa. Uyezve, kuvepo kwekumanikidza kwakashata kunobatsira pakuzadzwa kwakazara kwesimbi yakanyungudutswa mumuenzaniso. The pamusoro roughness pamusoro V process castings inogona kusvika Ra = 25 ~ 2.5μm. Iyo dimensional kushivirira nhanho yekukanda inogona kusvika CT5 ~ CT7. Chitarisiko chemhando yeasina kunaka pressure castings yakanaka, uye mhando yemukati yakavimbika.