Low pressure casting is a method for metal liquid to fill the cavity from bottom to top under pressure and solidify under pressure. The pressure used is relatively low (usually 0.02~0.05MPa), which is called low pressure casting. Low pressure casting equipment generally consists of maintaining furnace and its auxiliary device, mold opening and closing mechanism, air pressure system and control system. Sigun iti connection mode iti nagbaetan ti amag ken panangmantener iti urno, mabalin a mabingay dayta iti overhead low pressure casting machine ken side low pressure casting machine.
Ti overhead a nababa a boltahe a casting machine nga estruktura ket agdama a kaaduan a maus-usar a nababa a boltahe a casting machine type. daytoy ket nailasin babaen ti simple nga estruktura, nalaka a panagaramid ken kombeniente a panagpataray; But the production efficiency is low, because only one mold can be placed on maintaining furnace, in one production cycle of castings, all operations are carried out on the furnace, so nearly half of the maintaining furnace in one cycle is idle. Secondly, the lower mold is affected by the heat radiation of the maintaining furnace cover, and the cooling is slow, which prolongs the solidification time of the casting; Maysa pay, ti nababbaba a molde ket saan a maikeddeng babaen ti alikamen ti ejector rod, a mangpaadu ti pannakariribuk iti disenio ti molde. a mangmantener ti panagselio ti urno, panagmantener ken panagtengngel ti alloy ket saan a kombeniente..
In order to overcome the disadvantage of overhead low-pressure casting machine, side-mounted low-pressure casting machine was developed, which placed the mold on the side of the maintaining furnace, and the mold and maintaining furnace were connected by Riser tube. Such a maintaining furnace can provide metal liquid for more than two models at the same time, thus improving the production efficiency. Loading, slag removal and Jinye treatment are also more convenient; Napasayaat met dagiti kasasaad ti panagpapudot ti molde..
