Manufacturing method of frozen casting mold

Abstract

The invention relates to a manufacturing method of a frozen casting mold, which comprises the following steps of freezing crude sand to form low-temperature crude sand (1) with the temperature of 10 DEG C below zero to 30 DEG C below zero, fixing a mold (2) provided with a vent plug on a bottom plate (3) also provided with a vent plug, putting a sand box (4), injecting the low-temperature crude sand (1) into the sand box (4), moving a sand box upper cover (5) provided with a plurality of water mist nozzles (6) to the upper part of the sand box (4), spraying high-pressure water mist into the sand box (4) through a high-pressure water mist generator, enabling the high-pressure water mist to make contact with low-temperature crude sand in the sand box (4) to be condensed into ice, bonding molding sand together through the ice, and acquiring a frozen casting mold (8) after drawing. According to the manufacturing method of the frozen casting mold, streamlined production of sand mold casting with water as a binder can be achieved, the production efficiency is high, the production cost is low, the demanded quantity of molds in the production process is small, toxic and harmful substances cannot be generated, and waste sand obtained after pouring can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of sand mold casting, in particular to a streamlined production method of frozen molds. Background technique [0002] Sand casting is the most traditional casting method. Sand casting is still the most widely used casting method in casting production because sand casting is not limited by the shape, size, complexity and type of alloy of the parts, and the production cycle is short and the cost is low. [0003] The manufacture of sand molds in the production of sand box casting often requires the use of binders to make the molding sand have a certain strength and plasticity. These binders include: resin, water glass, clay, etc. Some of these binders will produce harmful gases during the pouring process, and some will produce harmful solid emissions, which will pollute the environment to varying degrees, and the cost of waste sand recovery after pouring is high. [0004] In order to reduce pollution and rec...

AI Technical Summary

Problems solved by technology

However, the application of this frozen sand mold is very limited. The main reason is that the sand box filled with green sand needs to be kept at low temperature for a long period of time, the production efficiency is low, and multiple molds need to be made to meet a certain production scale.

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