A method of applying paint to a mold

Abstract

A kind of method for coating coating to casting mould, when coating coating to casting mold, be coated with 1-2 road primers on the surface of described casting mold earlier, every coating primer all carries out drying treatment, and then on The surface of the primer coating is coated with more than one outer layer of paint, and each outer layer of paint is dried. The main component of the refractory aggregate contained in the outer layer of paint is different from the main component of the refractory aggregate contained in the primer. Through the improvement of the paint coating method and the coordination of the fire resistance level of the primer and outer paint, the paint can not only play a sufficient heat insulation effect, but also achieve good peeling after casting, and the performance can exert the maximum effect.

Description

technical field

[0001] The invention relates to a casting process control method, in particular to a method for coating a casting mould. Background technique

[0002] Coating a layer of paint on the working surface of the mold (including the core) can effectively prevent and reduce defects such as sand sticking and sand inclusions on the surface of the casting, reduce the surface roughness of the casting, and improve the surface quality of the casting. It can be said that the quality of the casting coating It is the most direct factor related to the dimensional accuracy of castings. There are many types of commonly used casting coatings, which can be basically divided into two categories according to different dilution carriers-water-based coatings and alcohol-based coatings. Water-based coatings refer to coatings dispersed in water as a dispersion medium, and alcohol-based coatings refer to coatings dispersed in alcohol as a dispersion medium. Water-based coatings are wide...