Auxiliary material used for sand mixing in casting process and capable of reducing air pores of flange and preparation method thereof

Abstract

The invention discloses an auxiliary material used for sand mixing in the casting process and capable of reducing air pores of a flange and a preparation method thereof. The auxiliary material is prepared from the following components: 100-200 parts of purple grit mud, 180-220 parts of modified starch, 0.8-1.2 parts of malt sugar, 0.8-1.2 parts of glycerinum, 3-5 parts of sodium hydroxide, 6-10 parts of wood powder, 8-12 parts of casting coal powder, 3-5 parts of iron oxides, 1-3 parts of carboxymethyl starch, 10-15 parts of a stabilizer, 60-70 parts of vegetable gelatin, 60-70 parts of urea, 60-70 parts of BPO, 12-18 parts of hydroxypropyl cellulose, 3-5 parts of talcum powder, 1-3 parts of titanium dioxide, 100-120 parts of metal particles and 100-130 parts of deionized water. According to the auxiliary material used for sand mixing in the casting process and capable of reducing air pores of the flange and the preparation method thereof, the defects of castings such as sand adhesion, sand inclusion, sand cut and air pores are totally overcome, and the cleanliness of the castings is further improved.

Description

Technical field: [0001] The invention relates to the field of mold manufacturing, in particular to a casting sand mixing auxiliary material for reducing flange pores and a preparation method thereof. Background technique: [0002] Flange is also called flange flange or flange. Flanges are parts that are connected to each other between pipes and are used for connection between pipe ends; they are also useful for flanges on equipment inlets and outlets, And can be used as connection between two equipments, example reducer flanges. Flange connection or flange joint refers back to the detachable connection of flange, Gasket and bolt as a team of combined sealing structure. Pipe flange refers back to the flange used for piping in the pipeline installation, And used on the equipment refers to the inlet and outlet flange of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flanges are divided into t...

AI Technical Summary

Problems solved by technology

[0003] In the foundry industry, foundry sand matching plays a very important role in the casting quality of castings. However, traditional foundry sand matching auxiliary materials can no longer meet the quality requirements of castings, such as fat oil and tung oil. During the casting process, it is easy to produce air voids and Insurmountable defects such as subcutaneous air and air, and the other two are liquids that are not conducive to transportation and storage, and have a pungent smell, which makes people easy to breathe, which is not conducive to health and work. For this reason, people have been seeking an ideal technical solutions