Steel casting wet type sand binding bright desand composite powder additive

A technology of green sand and additives, applied in casting moulds, casting molding equipment, cores, etc., which can solve problems such as high production costs, difficulty in guaranteeing casting quality, and environmental pollution, and achieve the effects of reducing production costs and improving production efficiency
CN100999008BInactive Publication Date: 2010-04-14ๅˆ˜็Ž‰ๆปก
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ๅˆ˜็Ž‰ๆปก
Publication Date
2010-04-14
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The present invention discloses an iron and steel casting green sand adhesive bright sand-cleaning composite powder additive. Said additive is made up by using cooked colocasia powder, sodium carbonate, magnesium chloride, calcium base bentonite, bran powder and peanut hull meal according to a certain ratio, mixing them, pulverizing and sieving with 120 meshes.
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Description

technical field

[0001] The invention relates to a preparation material of green sand for iron and steel castings, in particular to a composite powdery additive for bonding, brightening and desanding of green sand for iron and steel castings. Background technique

[0002] The traditional preparation method of green sand for iron and steel castings is: foundry raw sand + binder + activator + anti-stick sand material + water โ†’ mixed and used. The use of such green sand to produce small and medium-sized carbon steel and low alloy steel castings is very prone to stubborn sand sticking defects, which is a difficult problem that cannot be solved at home and abroad, especially for steel castings with a wall thickness of less than 10mm, even if the shot blasting machine Difficult to clean up. Not only the quality of castings is difficult to guarantee, but also pollutes the environment, and the production cost is also high. Contents of the invention

[0003] The purpose of the pre...

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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