A vertical coating device based on v-method casting mold

Abstract

The invention discloses a vertical film laminating device based on a V-method casting die. The vertical film laminating device comprises two sets of vertical negative-pressure boxes of which absorption surfaces are opposite; a gap for storing the die is remained between the two vertical negative-pressure boxes; a plastic thin film for laminating the die is adsorbed on the absorption surface of each vertical negative-pressure box; electric heating tubes are arrayed in the vertical negative-pressure boxes; the vertical negative-pressure boxes are further connected with a vacuumizing system; the vacuumizing system is communicated with the inner part of the die through a vacuum pipe. The invention provides the vertical film laminating device based on the V-method casting die, fills in the blank of die film lamination in a V-method process, and does sufficient preparation work for subsequent mold sand forming; film laminating is carried out on the die by adopting a vacuumizing manner and the plastic thin film is heated by the electric heating tubes, so that the die can be laminated under the condition that the plastic thin film is at a plastic state and the laminating effect is good; the vertical film laminating device has a relatively high automatic working potential and provides a wide development space for a V-method production process.

Description

technical field [0001] The invention relates to the technical field of heat-resistant material casting, in particular to a vertical coating device based on a V-method casting mold. Background technique [0002] At present, the production of domestic fused and cast refractories mostly uses conventional water glass combined with quartz sand sand molds. The sand molds prepared by this process technology, first, due to the easy aging of water glass, the degree of polymerization of polylauric acid is not uniform, and the bonding strength is reduced, resulting in water glass. The usable time of the sand is shortened, and the manufacturability deteriorates. As a result, the strength of the sand mold varies greatly, and the phenomenon of severe sand sticking often occurs, making the surface of the product uneven and the size deviation large. The second is that due to the poor high-temperature strength of water glass sand, under the condition of poor heat dissipation, it will inevit...

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Problems solved by technology

[0002] At present, the production of domestic fused and cast refractories mostly uses conventional water glass combined with quartz sand sand molds. The sand molds prepared by this process technology, first, due to the easy aging of water glass, the degree of polymerization of polylauric acid is not uniform, and the bonding strength is reduced, resulting in water glass. The usable time of sand is shortened, and the manufacturability is deteriorated

The strength of the sand mold changes greatly, and the phenomenon of severe sand sticking often occurs, making the surface of the product uneven and the size deviation large

Second, due to the poor high-temperature strength of water glass sand, under the condition of poor heat dissipation, it will inevitably be deformed and twisted when softened by the high-temperature melt, resulting in product appearance defects

The third is that the ordinary water glass sand mold cannot be collapsed and has no concession, which may cause crack defects in the product

Moreover, water glass sand can only be used once, which is not conducive to recycling, and the waste of materials is large

Fourth, the sodium silicate sand plate is easily deformed when baked, which affects the geometric size of the sand mold

[0006] Among them, in the V-method production process, the mold coating is one of the very important links in the whole process, and there is no vertical coating device based on the V-method casting mold.

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