An implantable molten ceramic material outflow device

Abstract

The invention discloses an implanted molten ceramic material outflow device, which comprises an outflow pipe, and the outflow pipe is installed at the bottom of a melting furnace. The invention can realize the opening and closing of the outlet port by means of electric heating, and at the same time, can control the flow rate of the molten ceramic material at the outlet port by controlling the magnitude of the current, thereby realizing the stable flow control of the molten ceramic material, not only ensuring the ceramic sand The particle size is concentrated, and it can also ensure the quality of ceramic sand.

Description

technical field [0001] The invention belongs to the technical field of preparation of molten ceramic particles, in particular to an implantable molten ceramic material outflow device. Background technique [0002] Sand casting is the main process of casting production. The castings produced by the sand casting process account for more than 70% of the total output of castings; sand is the aggregate that forms the mold and core in sand casting, and is an important molding material for sand casting. Its physical and chemical properties determine the performance of its casting process and affect the quality of castings; the raw sand used in sand casting in the foundry industry is mainly quartz sand, and its usage accounts for more than 90% of the amount of foundry sand; however, quartz sand Large thermal expansion, poor thermochemical stability under the action of metal oxides, castings are prone to casting defects such as sticky sand, veins, rough surface, etc., and a large amo...

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Problems solved by technology

[0002] Sand casting is the main process of casting production. The castings produced by the sand casting process account for more than 70% of the total output of castings; sand is the aggregate that forms the mold and core in sand casting, and is an important molding material for sand casting. Its physical and chemical properties determine the performance of its casting process and affect the quality of castings; the raw sand used in sand casting in the foundry industry is mainly quartz sand, and its usage accounts for more than 90% of the amount of foundry sand; however, quartz sand Large thermal expansion, poor thermochemical stability under the action of metal oxides, castings are prone to casting defects such as sticky sand, veins, rough surface, etc., and a large amount of free SiO is produced during the production process 2 Therefore, quartz sand is not an ideal molding material for casting; in order to reduce the application of quartz sand in foundry production, artificial ceramic foundry sand came into being

[0003] Artificial ceramic casting sand has a round shape, high refractoriness, small thermal expansion, strong crush resistance, long service life, can save the amount of binder, improve the surface and dimensional accuracy of castings, and has been popularized and applied in casting production; The outlet of the fused ceramic sand preparation system is made of refractory materials directly on the furnace body. The shape is irregular and the outflow is very unstable. It is difficult to stably control the preparation process of the fused ceramic sand. The particle size of the sand is scattered, and the quality is very unstable

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