Syrup-combined type sand for casting

Abstract

The invention relates to syrup-combined type sand which is used for casting ferrous metal produced by adopting edible or medicinal syrup as a bonding agent. The syrup-combined type sand is prepared from the following components in part by weight: 100 parts of naturally-winnowed silica sand, 3 to 15 parts of syrup bonding agent, 0 to 3 parts of boric acid serving as a reinforcing agent and small amount of alcohol serving as an auxiliary material; the process comprises the following follows: according to the material components and weight ratio, adding the syrup and the boric acid in the naturally-winnowed silica sand, mixing and stirring the mixture, shaping the mixture, spraying and brushing the alcohol, firing and roasting, and molding. The syrup-combined type sand has the advantages that: the cost is greatly reduced; as the syrup belongs to hydrocarbon, no impurity remains after being burned so as not to influence the regeneration and utilization of the used casting sand; and the syrup-combined type sand is environment-friendly and does not harm the health of workers.

Description

technical field [0001] The invention relates to a ferrous metal foundry sand produced by using edible or medicinal syrup as a binding agent. Background technique [0002] The molding sand binders widely used in the foundry industry at home and abroad mainly use the following three types: the first is bentonite series mineral fine powder (add water); the second is glass water (through CO 2 gas curing); the third is liquid phenolic resin (ammonia curing agent). [0003] The disadvantage of the first and second types of binders is that the impurities brought in affect the recycling of the used molding sand. The third type of liquid phenolic resin (ammonia curing agent) combined with the molding sand can be recycled without bringing in impurities, but it is a common problem. yes: [0004] (1) There is a pungent odor released during mixing, molding and baking, which is toxic to the workers on the production and use sites; [0005] (2) The cost is high. Contents of the invent...

AI Technical Summary

Problems solved by technology

[0004] (1) There is a pungent smell released during mixing, molding and baking, which is toxic to the workers on the production and use sites;

[0005] (2) High cost