Coalless environmental-friendly casting molding sand additive and application thereof in molding sand

Abstract

The invention provides a coalless environmental-friendly casting molding sand additive which comprises the following components in parts by weight: 60-70 parts of silicon oxide, 20-30 parts of a metaloxide and 5-15 parts of aluminosilicate. Coalless environmental-friendly casting molding sand comprises the following components: sand, bentonite, iron, the additive and an anti-sticking agent in a weight ratio of (90-95):(2.5-5):(2-5):(1.5-4):(1-6); and the anti-sticking agent is a mixture of quartz sand, modified lime powder, modified dolomite, an organic silicon modified epoxy phenolic resin and modified gum. By adopting the coalless environmental-friendly casting molding sand provided by the invention, the problem of black pollution which cannot be avoided in the production process of a conventional method can be solved, the energy consumption of a production process can be greatly reduced, the environment protection burden can be alleviated, waste sand, which is a byproduct of a conventional process, can be reduced, and the surface control capability of a casting can be finally improved.

Description

technical field [0001] The invention relates to the field of foundry technology, in particular to a coal-free and environmentally friendly foundry sand additive and its application in the foundry sand. Background technique [0002] The foundry industry is the basic industry upstream of the production of pillar industries such as automobiles, equipment manufacturing, steel, petrochemicals, and electric power, and is an important industry related to the national economy and people's livelihood. First of all, the environmental pollution of my country's foundry industry is relatively serious, which cannot meet the development strategy of the country's green economic development. Except for a few large-scale foundry enterprises, environmental protection measures are basically in place, and most factories seldom take environmental issues into account. Most of the foundry sand is mixed with coal powder to improve the surface quality of castings, and coal powder will produce a large...

AI Technical Summary

Problems solved by technology

[0003] Technical problem to be solved: the purpose of this invention is to provide a kind of coal-free environmental protection casting sand additive and the molding sand prepared by it, solve the problem that the traditional method will form unavoidable black pollution in the production process, thereby serious environmental pollution, making The energy consumption required by the production process is greatly reduced, the pressure on environmental protection is relieved, the formation of waste sand, a by-product of the traditional process, is reduced, and the surface control ability of castings is finally improved