1- Kodi Vacuum Casting Ndi Chiyani?
Vacuum Casting imadziwikanso kuti Negative Pressure Seled Casting, Reduced Pressure Casting kapenaV Process Casting. Vacuum negative kuthamanga kuponyera ndi mtundu umodzi wa youma mchenga kuponyera ndipo kumafuna kugwiritsa ntchito zipangizo mpweya m'zigawo kuti atenge mpweya mkati mwa nkhungu kuponyera, ndiyeno ntchito kusiyana kuthamanga mkati ndi kunja kwa nkhungu kuphimba mkangano pulasitiki filimu pa mitundu ndi ma templates. Chikombole choponyera chidzakhala cholimba kuti chitha kupirira chitsulo chosungunula panthawi yoponya. Mukapeza nkhungu yoponyera vacuum, lembani m'bokosi la mchenga ndi mchenga wouma popanda binder, ndiyeno musindikize pamwamba pa nkhungu yamchenga ndi filimu ya pulasitiki, ndikutsatiridwa ndi vacuum kuti mchenga ukhale wolimba komanso wolimba. Pambuyo pake, chotsani nkhungu, ikani mchenga, kutseka nkhungu kuti zonse zikonzekere kutsanulira. Potsirizira pake, kuponyedwa kumapezeka pambuyo poti chitsulo chosungunula chizikhazikika ndikukhazikika.
2- Ubwino Wotani pa Vacuum Casting?
1) Thevacuum castingskukhala ndi mawonekedwe olondola kwambiri, mawonekedwe omveka bwino komanso malo osalala.
2) Palibe zomangira, madzi ndi zowonjezera mumchenga woumba, zomwe zimapangitsa kuti mchenga ukhale wosavuta.
3) Ndikosavuta kuyeretsa ma vacuum castings. Mipweya yocheperako imapangidwa panthawi yoponya.
4) Mavacuum castings atha kugwiritsidwa ntchito pa aosiyanasiyana mafakitale. Itha kugwiritsidwa ntchito popanga gulu laling'ono lachidutswa chimodzi komanso kupanga misa, makamaka ma castings akulu ndi apakatikati ndi ma castings okhala ndi mipanda yopyapyala ndioyenera kuponya vacuum.
3- Ndi Zitsulo ndi Zosakaniza Ziti Zomwe Zingathe Kuponyedwa ndi Vuto la Vacuum?
• Iron Grey Cast, Ductile Cast Iron
• Carbon Steel: Low carbon, medium carbon and high carbon steel
• Zida Zachitsulo Zowonongeka: Chitsulo chochepa chachitsulo, chitsulo chapamwamba kwambiri, chitsulo chapadera cha alloy
• Aluminiyamu ndi ma aloyi awo
• Mkuwa & Mkuwa.
4- Kodi Ma Vacuum Castings Amagwiritsidwa Ntchito Kumafakitale Ati?
Monga tafotokozera pamwambapa pazabwino zoponya vacuum, zotayira zitha kugwiritsidwa ntchito m'mafakitale osiyanasiyana. Itha kugwiritsidwa ntchito popanga gulu laling'ono lachidutswa chimodzi komanso kupanga misa, makamaka ma castings akulu ndi apakatikati ndi ma castings okhala ndi mipanda yopyapyala ndioyenera kuponya vacuum. Chifukwa chake, ma vacuum castings amagwiritsidwa ntchito kwambirimakina aulimi, makina opangira ma hydraulic, magalimoto onyamula njanji, ma crane ndi mafakitale omanga zombo.
5- Ndi Zololera Zotani Zomwe Zingafikidwe ndi Vuto Loponyera Vuto?
Panthawi yoponyera vacuum, chifukwa pamwamba pa chithunzicho ndi filimu yapulasitiki, palibe chifukwa chogwedeza kapena kugogoda pamene kukoka nkhungu. Kuthamanga ndi kukakamiza koyipa kumapangitsa mchenga wowumba kukhala wophatikizika, ndipo kuuma kwa nkhungu yamchenga kumakhala kwakukulu komanso kofanana. Pansi pa kutentha kwachitsulo chosungunula, patsekeke sikophweka kupunduka. Kuphatikiza apo, kukhalapo kwa kukakamizidwa koyipa kumathandizira kudzaza kwathunthu kwachitsulo chosungunuka muchitsanzo. Pamwamba roughness wa V ndondomeko castings angafikire Ra = 25 ~ 2.5μm. The dimensional kulolerana mlingo wa castings akhoza kufika CT5 ~ CT7. Mawonekedwe amtundu wa kuponderezedwa kolakwika ndiabwino, ndipo mawonekedwe amkati ndi odalirika.