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Digitalization processing method of gypsum mould

A processing method and plaster model technology, applied in the direction of stone processing tools, stone processing equipment, manufacturing tools, etc., can solve problems such as complex process and loss of precision, and achieve the effects of shortening the process, reducing manufacturing costs, and reducing costs

Active Publication Date: 2009-05-27
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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Problems solved by technology

[0003] Gypsum casting is one of the traditional casting methods. It has the advantages of being able to cast non-ferrous metal castings with high surface precision and complex shapes, and is easy to clean after pouring. It is often used in the manufacture of non-ferrous metal molds. The main disadvantage of the method of obtaining plaster molds by turning over the mold The process is complicated, and it is necessary to make a master mold, turn over a silicone mold, pour a plaster mold, and then cast a metal casting after the plaster mold is obtained, and there is a loss of precision during the mold turning process

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  • Digitalization processing method of gypsum mould

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[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0024] see figure 1 , a digital processing method for gypsum molding, the method comprises the steps of:

[0025] Step 101: Proportioning the gypsum mixture;

[0026] The dimensional accuracy of precision casting is generally within ±0.2mm. Due to the continuous dehydration of gypsum during the drying and roasting process, phase change occurs, accompanied by volume changes. Therefore, in order to prevent cracking of the gypsum mold, appropriate Filler, to reduce the linear shrinkage and crack tendency of gypsum type, improve the thermal conductivity of gypsum type, so that it has good room temperature and high temperature strength, and better dimensional accuracy. The gypsum is flue gas desulfurization gypsum, and the filler includes mullite powder and zircon powder. In order to improve the s...

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Abstract

The invention discloses a method for digital processing a gypsum mold, belonging to the crossed technical field of precision casing and digital control processing. The method comprises the steps as follows: a gypsum mixture is made into a block to be dried and calcined into a gypsum block to be processed firstly; a three-dimensional CAD model of the gypsum mold is transformed into digital control processing code directly; the gypsum block is arranged on a processing device and milling processing is carried out under the drive of the digital control processing code; waste residue produced during processing is taken away by blew-out air current or is absorbed by a dust collector; and finally, the well processed gypsum mold is cast to obtain a cast. Compared with the existing gypsum patternmaking method, the processing method has high processing precision, saves the step for manufacturing a mold, reduces the processing procedures, shortens the production period and reduces the production cost. The method is especially suitable for processing and manufacturing a single piece or a small batch of precise cast.

Description

technical field [0001] The invention belongs to the intersecting technical field of precision casting and numerical control machining, and in particular relates to a digital processing method for gypsum mold making. Background technique [0002] With the globalization of the market and the intensification of competition, the speed of product upgrading is accelerating, and the demand for single-piece, small-batch, and high-precision castings is increasing. The plaster mold manufacturing process for single-piece, small-batch, especially large-scale precision castings Short production cycle and low manufacturing cost are required. At present, the traditional method of remaking silica gel molds to manufacture plaster molds has a long production cycle and high manufacturing costs, which can no longer meet market demand. In addition, large-scale thermal power plants generate a large amount of flue gas desulfurization gypsum solid waste during the power generation process. At pres...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/00B22C9/02B28D1/00
Inventor 单忠德刘丰戎文娟曹宇飞
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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