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

Inactive Publication Date: 2010-04-14
刘玉满
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only the quality of castings is difficult to guarantee, but also pollutes the environment, and the production cost is also high

Method used

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

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Embodiment Construction

[0021] To produce 1000kg of Benxi Iron and Steel castings with green sand bonding, brightening, and desanding composite powder additives, weigh 200kg of cooked taro powder, 250kg of calcium-based bentonite, 50kg of sodium carbonate, and camellia oleifera bran powder 200kg, 50kg of magnesium chloride, 250kg of peanut shell powder are mixed and crushed through a 120-mesh sieve. When used in foundry, add 6-8 parts by weight of this powder to 100 parts by weight of original foundry sand and 6-7 parts by weight of water Mix and grind for 6 to 8 minutes, and the sand is used or not used, realizing a one-time sand mixing operation with one material in place.

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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 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 → 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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/00
Inventor 刘玉满刘翔
Owner 刘玉满
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