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Method for quickly preparing arc spraying mother plate substrate

An arc spraying and master mold technology, applied in manufacturing tools, ceramic molding machines, etc., can solve the problems of inability to complete the production of metal shells, difficult temperature gradient control, and high coating temperature, achieving good metal spraying performance and great environmental protection. Value, effect of long initial setting time

Inactive Publication Date: 2009-05-20
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-strength and high-hardness materials also have high melting points, and the coating temperature is very high during spraying, and the temperature gradient is not easy to control. It is difficult to manufacture mold shells with consistent performance.
After a large number of experiments, it was found that when using traditional arc spraying master mold materials, such as RP prototypes, plaster molds, etc. to spray high-melting point metals, serious burns occurred, and it was impossible to complete the production of metal shells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0080] A kind of rapid preparation method for electric arc spraying master matrix, its steps are as follows:

[0081] ② Processing the prototype of the parts to be sprayed;

[0082] Prototypes come from product samples, rapid prototypes or CNC machining parts, and the materials used for CNC machining parts are easy-to-process materials, such as wood, foam or plastic;

[0083] ② Configure magnesite slurry:

[0084] Light-burned magnesia, industrial magnesium chloride, and water are used as the main raw materials to configure the slurry. The mass percentage of each raw material is: light-burned magnesia 41.2%-57.7%, industrial magnesium chloride 15.9%-36.1%, chopped carbon fiber ≤ 2.0%, Water 20.7%~26.4%;

[0085] The main raw materials of magnesite materials include light-burned magnesium oxide, magnesium chloride, water, etc. It is an air-condensing material that can be hardened and solidified above 10°C. It not only has high early strength at room temperature, low alkalinit...

Embodiment 1

[0100] Rapid preparation of master mold base for medium and low melting point arc spraying

[0101] To make a stamping die for the inner door panel of a car model, the size of the master die used for arc spraying molding is 1140mm×950mm×250mm.

[0102] A kind of rapid preparation method for electric arc spraying master matrix, its steps are as follows:

[0103] ② Prototype of processed sprayed parts:

[0104] Use CNC machining parts as prototypes, and use foam as the material for CNC machining prototypes;

[0105] ② Prepare magnesite slurry:

[0106] Light-burned magnesia, industrial magnesium chloride, and water are used as the main raw materials to configure the slurry. The mass percentages of the raw materials used are: 57.7% of light-burned magnesia, 15.9% of industrial magnesium chloride, and 26.4% of water;

[0107] ③ Configure magnesite slurry:

[0108] First, 15.9% of industrial magnesium chloride and 26.4% of water are prepared into a uniform solution, then 57.7% ...

Embodiment 2

[0117] Rapid preparation of master mold base for medium and low melting point arc spraying

[0118] To make a stamping die for the inner door panel of a car model, the size of the master die used for arc spraying molding is 1140mm×950mm×250mm.

[0119] The steps are as follows:

[0120] ①Process the prototype of the parts to be sprayed;

[0121] The prototype is derived from the product sample, and wood is used as the material of the product sample;

[0122] ② Configure magnesite slurry:

[0123] Light-burned magnesia, industrial magnesium chloride, and water are used as the main raw materials to configure slurry. The mass percentages of the raw materials used are: 41.2% light-burned magnesia, 36.1% industrial magnesium chloride, 2.0% chopped carbon fiber, and 20.7% water;

[0124] ③First prepare industrial magnesium chloride and water to form a uniform solution, then add light-burned magnesium oxide and carbon fiber, and stir evenly;

[0125] ④Put the processed prototype ...

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Abstract

The invention discloses a rapid preparation method for an arc-sprayed female die matrix. The female die matrix belongs to a magnesium oxychloride composite material, and contains 41.2 to 57.7 percent of light burned magnesia, 15.9 to 36.1 percent of industrial magnesium chloride, less than or equal to 2.0 percent of chopped carbon fiber, and the balance being water. During the use, raw materials are prepared into an uniform sizing agent, a prototype of a part to be sprayed is used to reclaim a female die made of magnesium oxychloride composite material, the female die is dried and finely machined, and finally hydrochloric acid is used to perform surface treatment on the female die to finish the rapid preparation of the sprayed female die. The sprayed female die produced by the method has low cost and high strength, is high temperature resistant, does not need high temperature baking during the production, can be machined, and is particularly suitable for middle-low melting point and high melting point electric arc spraying rapid molding technologies.

Description

technical field [0001] The invention relates to the manufacturing technology of electric arc spraying molds, in particular to a rapid preparation method for a master mold base used in electric arc spraying mold making. Background technique [0002] Mold is an extremely important process equipment in modern industry. It plays an important role in the size, shape accuracy and internal quality of formed parts in the manufacturing process of products. Molds manufactured by traditional mechanical processing methods have the advantages of high precision and long service life, but at the same time have the disadvantages of long manufacturing cycle, many processes, and high cost, so they cannot meet the goal of rapid product development in the new era. In recent years, a new process of rapid manufacturing of molds has emerged. It is different from the simple molds mentioned in the past, but a brand new method. Rapid tooling manufacturing technology (Rapid Tooling, referred to as RT...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/14B28B1/52B28B11/24B28B11/12B28B11/08
Inventor 卢秉恒何仲云韩小明唐一平魏润强
Owner XI AN JIAOTONG UNIV
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