Precoated sand accelerating casting part forming and preparation method thereof

Abstract

The invention relates to the field relative to precoated sand casting technologies, in particular to precoated sand accelerating casting part forming. The precoated sand is prepared from the following components of a silica sand body, a ceramsite sand body, a magnetite sand body, thermoplastic phenolic resin, modified polyester resin, hexamethylene tetramine, ammonium acetate, calcium stearate, ceramic glaze powder, ammonium stearate and a forming agent. According to the precoated sand accelerating casting part forming, the problem that a majority of precoated sand is low in forming speed and poor in forming effect is solved, the forming agent is added into the precoated sand, and the specific precoated sand preparation technology is matched, so that through the preparation method of the precoated sand, the casting part forming speed can be increased, and the casting part forming quality can be improved, and casting efficiency is improved.

Description

Technical field: [0001] The invention relates to the related field of coated sand casting technology, in particular to coated sand for accelerating the molding speed of castings and a preparation method thereof. Background technique: [0002] Casting refers to the processing method of melting solid metal into liquid and pouring it into a mold of a specific shape, and waiting for it to solidify and form. The metals to be cast include: copper, iron, aluminum, tin, lead, etc. The common casting materials are raw sand, clay, water glass, resin and other auxiliary materials. Special casting molds include: investment casting, lost foam casting, metal casting, ceramic casting, etc.; [0003] In the ordinary casting process, a large amount of coated sand is used to prepare the model, and the coated sand is a kind of high-quality selected natural quartz sand as the original sand, thermoplastic phenolic resin, urotropine and reinforcing agent. raw material. According to the differe...

AI Technical Summary

Problems solved by technology

Therefore, this patent provides a coated sand that speeds up the molding speed of castings and its preparation method to solve the problem that the molding speed of most coated sands is relatively slow and the molding effect is poor.