Clay green sand for high-pressure molding and preparation method thereof

A technology of green sand and clay, applied in the direction of casting molding equipment, molds, cores, etc., can solve the problems of casting pores, increased sand inclusions, sand molds are easily broken and damaged, and the quality of high-pressure molding line castings cannot be guaranteed, so as to reduce sand molds damage, good anti-sticking sand, low effect of anti-sand inclusion
CN103567359AInactive Publication Date: 2014-02-12TONGLING JINGWEI FLUID SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TONGLING JINGWEI FLUID SCI & TECH
Publication Date
2014-02-12
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses clay green sand for high-pressure molding and a preparation method thereof. The clay green sand is prepared from the following raw materials in parts by weight: 50-70 parts of zircon sand, 30-40 parts of chromite sand, 8-12 parts of bentonite, 5-10 parts of pottery, 3-6 parts of calcium sulfate crystal whiskers, 2-3 parts of calcium lignosulphonate, 1-2 parts of lauryl alcohol polyoxyethylene, 1.5-2.5 parts of polyoxyethylene, 1-2 parts of iron oxide red, 4-8 parts of stove ash slag, 3-5 parts of aluminum silicate fibers, 2-4 parts of composite powder and 5-10 parts of water. The molding sand disclosed by the invention is added with the aluminum silicate fibers and the calcium sulfate crystal whiskers, so that strength and toughness of the molding sand can be improved, damages to a sand mould during drawing are reduced; moreover, the molding sand further has good ability of preventing burnt-on sand and sand inclusion as well as low evolution rate, good gas permeability, and the like, can be used for effectively avoiding the defects such as gas pores and sand inclusion of a casting piece, and improving the production efficiency of a high-pressure molding line and the quality of the casting piece.
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Description

technical field

[0001] The invention relates to a molding sand and a preparation method thereof, in particular to a clay green molding sand for high-pressure molding and a preparation method thereof. Background technique

[0002] High-pressure molding is to put the molding sand at 7kg / cm 3 The above is a modeling method that is more compact than pressing. Compared with ordinary molding, high-pressure molding has the advantages of high precision casting size, good surface quality, high production efficiency, and good working conditions. However, when the molding sand of the prior art is used for high-pressure molding, the sand mold is easily broken and damaged, and defects such as pores and sand inclusions in the casting increase, so that the normal production of the high-pressure molding line and the quality of the casting cannot be guaranteed. Contents of the invention

[0003] The object of the present invention is to provide a clay green sand for high-pressure moldin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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