Steel casting wet type sand binding bright desand composite powder additive

A technology of green sand and additives, applied in the direction of casting molds, casting molding equipment, cores, etc., can solve the problems of difficult to guarantee the quality of castings, high production costs, pollution of the environment, etc., and achieve the effect of improving production efficiency and reducing production costs

Inactive Publication Date: 2007-07-18
刘玉满
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Problems solved by technology

Not only the quality of castings is difficult to guarantee, but a

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  • Steel casting wet type sand binding bright desand composite powder additive

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Embodiment Construction

[0021] To produce 1000kg of this iron and steel casting green sand bonding, brightening, and de-sanding compound powder additive, weigh 200kg of cooked taro powder, 250kg of calcium-based bentonite, 50kg of sodium carbonate, and camellia oleifera bran powder by cooking, drying and pulverizing raw taro. 200kg of magnesium chloride, 50kg of magnesium chloride, and 250kg of peanut shell powder are mixed and smashed through a 120-mesh sieve. When used in a foundry, add 100 parts of raw foundry sand by weight to 6 to 8 parts of this powder and 6 to 7 parts of water. Mixing and grinding for 6 to 8 minutes, the sand is produced for use or stand-by, and the operation of one-time, one-shot, in-place sand mixing is realized.

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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.

Description

technical field [0001] The invention relates to a compounding material for green sand for iron and steel castings, in particular to a composite powder additive for bonding, brightening and de-sanding of green sand for iron and steel castings. Background technique [0002] The traditional preparation method of green sand for iron and steel castings is: original foundry sand + binder + activator + anti-sticking sand material + water → mixed grinding. Using such green sand to produce small and medium-sized carbon steel and low-alloy steel castings is 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 shot blasting machine. Difficult to clean up. Not only the quality of castings is difficult to guarantee, but also the environment is polluted and the production cost is high. SUMMARY OF THE INVENTION [0003] The purpose of the present inv...

Claims

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Application Information

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IPC IPC(8): B22C1/00
Inventor 刘玉满刘翔
Owner 刘玉满
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