A kind of preparation method of lost foam casting coating

Abstract

The present invention relates to a preparation method of lost foam casting paint, the preparation method of lost foam casting paint adopts the following paint processing equipment, the paint processing equipment includes a support spray device, a multi-stage vibrating screen device and a rotary grinding device; the described The supporting spraying device has a hollow structure, a multi-stage vibrating screen device is installed on the upper side of the supporting spraying device, and a rotary grinding device is installed on the lower side of the supporting spraying device. The invention can solve the problem that the existing equipment only performs one screening process when preparing the lost foam casting coating, the screening efficiency is low, and the size of the screen holes is fixed, which cannot meet the requirements for different screening particle sizes, and the existing When the equipment is used to prepare the coating for lost foam casting, it uses one-time grinding treatment, and the grinding fineness is not high, which leads to problems such as the decline in the quality of subsequent coatings.

Description

technical field [0001] The invention relates to the technical field of lost foam casting, in particular to a method for preparing a coating for lost foam casting. Background technique [0002] Cast coatings (refractory coatings) are coatings specially developed for the foundry industry. The difference between casting coatings and general coatings is that casting coatings can withstand high-temperature metal or plastic melts, and act as a barrier between castings and molds to prevent adhesion. [0003] The wetting of the refractory aggregate is particularly important. Only after continuous grinding to make the coating refractory fully wet, can the coating show good performance. The coating adopts the colloid mill grinding process, which is repeatedly ground, so that the coating has good comprehensive performance. [0004] At present, the existing lost foam casting coatings usually have the following defects in the preparation: 1. The existing equipment only performs one scr...

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Problems solved by technology

[0006] The invention can solve the problem that the existing equipment only performs one screening process when preparing the lost foam casting coating, the screening efficiency is low, and the size of the screen holes is fixed, which cannot meet the requirements for different screening particle sizes, and the existing When the equipment is used to prepare the lost foam casting coating, it adopts one-time grinding treatment, and the grinding fineness is not high, which leads to problems such as the decline in the quality of subsequent coating production.

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