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Quick drying method of plaster mold

A gypsum mold, fast drying technology, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of restricting the rapid development of product production cycle, large drying area, uneven drying, etc., to achieve simple, easy and safe operation. Good performance and efficiency

Active Publication Date: 2011-06-15
WEIFANG HUAMEI FINE TECHN CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional drying methods include heat radiation or hot air drying, and the energy used is electricity, gas, coal, etc., which have defects such as high energy consumption, long drying cycle, uneven drying, and large area of ​​drying place, which seriously restricts the product quality. Production cycle and rapid development of the industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The quick-drying method of plaster mold, when preparing the plaster mold, pre-embeds two 8mm thick soft plastic pipes in the plaster mold along the longitudinal direction of the mould, with an interval of 10cm; Two air passages are formed in the mold, and one end of the air passages is blocked with gypsum, and then air is passed into the air passages for primary drying, the gas pressure is 0.2Mpa, and the time is 60 minutes; then the plaster mold is dried twice by heat radiation , so that the moisture weight content in the gypsum mold is 18%.

Embodiment 2

[0015] The quick drying method of the plaster mold, when preparing the plaster mold, pre-embed a soft plastic tube with a thickness of 8 mm in the plaster mold along the longitudinal direction of the mold; after the plaster mold is cured, pull out the plastic tube to form a For the airway, block one end of the airway with gypsum, and then pass gas into the airway for primary drying, the gas pressure is 0.25Mpa, and the time is 40 minutes; The moisture content is 20% by weight.

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PUM

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Abstract

The invention discloses a quick drying method of a plaster mold, which is implemented by firstly preparing the plaster mold, arranging at least one air passage in the prepared plaster mold; then pumping air into the air passage for primary drying with air pressure being 0.15-0.25MPa (0.2MPa preferred), and time being 40-90min; and then carrying out secondary drying on the plaster mold until the moisture content in the plaster mold is less than or equal to 18%, wherein one end of the air passage is closed, and the other is opened on the surface of the plaster mold. The invention has high efficiency, good safety, and simple and convenient operation, is environment-friendly, and not limited by working circumstance.

Description

technical field [0001] The invention relates to a technique for plaster molds, in particular to a quick drying method for producing plaster molds. Background technique [0002] The gypsum mold used in the silicon carbide ceramic industry is a master mold used to cast the green body. It absorbs the water in the slurry through the action of the capillary to achieve the purpose of green body molding. The gypsum mold is made of α-type high-strength gypsum, and the water weight content in the initial gypsum mold is about 40%, while the water weight content in the gypsum mold put into use must reach below 18%. Therefore, the gypsum mold must be 22% % of the water is dried and disposed of. Traditional drying methods include heat radiation or hot air drying, and the energy used is electricity, gas, coal, etc., which have defects such as high energy consumption, long drying cycle, uneven drying, and large area of ​​drying place, which seriously restricts the product quality. The pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B7/46
CPCB28B7/346B28B1/261
Inventor 姜刚王序林王进
Owner WEIFANG HUAMEI FINE TECHN CERAMICS
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