Crucible forming machine

Abstract

The invention discloses a crucible forming machine, which relates to a pressure machine which uses a pressure head. The crucible forming machine is provided with a hydraulic system, an electrical control system, a vacuum system, a vibration platform, a vibration source, an engine seat, an external mold, an upper pressure head, a frame, a charging mechanism and an internal mold, wherein the vibration platform is arranged on a rubber spring of the engine seat; the vibration source is connected with the vibration platform through a universal shaft; the middle part of the external mold is connected with the vibration platform; the upper pressure head is connected with the external mold through a rotating tooth; the charging mechanism is arranged above the internal mold and the external mold; the internal mold is connected with the external mold through a lock; and the vibration platform is arranged at the middle position between the internal mold and the external mold. The crucible forming machine can be manually or automatically controlled, a crucible is formed at a time and has high integral performance, the density of a crucible product can reach 1.73g / cm<3>, the density difference of all parts is less than 0.03g / cm<3>, and product yield can reach over 95 percent; and a large-sized crucible with the diameter of 1,400mm*2,100mm can be manufactured. The crucible forming machine eliminates the internal cracks of the product, has more uniform mechanical vibration force and makes the density difference between the upper part and the lower part of the product less than 0.02g / cm<3>.

Description

technical field

[0001] The invention relates to a press machine using a pressure head, in particular to a crucible forming machine. Background technique

[0002] Artificial graphite crucible has the characteristics of high temperature resistance, oxidation resistance, and low ash content. It is widely used in high-purity metal smelting. It can be used not only as a heating element, but also as a container, and has less pollution to metals.

[0003] The existing graphite crucible production mainly adopts the processing method of mechanical turning, and the processing process is: select the graphite electrode, and process and cut it on a common lathe. For example, to process a graphite crucible with ф500mm×800mm, you can first take a section of graphite electrode with ф530mm×900mm, process its outer diameter to 500mm on a lathe, and then machine the inner hole from one end. The wall thickness is 50mm, the depth is about 750mm, and the bottom thickness 50mm; then flatten the o...

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