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Non-occupying coating and using method thereof

A non-occupancy coating, glycerin technology, applied in coatings, casting equipment, casting molds, etc., can solve the problems of long coating curing time, reduced production efficiency, prolonged demolding time, etc., and achieve controllable curing time , The effect of good coating performance and good bonding strength

Inactive Publication Date: 2013-03-20
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the chemical method, a curing agent must be pre-added in the coating formula for mixing, so as to achieve the purpose of coating curing, but the method of adding a curing agent in the coating in advance affects the use of the coating. When the amount of curing agent added is too large, the coating The available time of the coating is short and affects the strength of the coating; if the amount of curing agent added is too small, the curing time of the coating will be longer, the demoulding time will be prolonged, and the production efficiency will be reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A non-occupancy paint, composed of A component and B component, A component and B component are stored separately;

[0026] The A component is calculated by weight percentage by mixing 35% graphite powder, 5% attapulgite, 10% water glass and 50% water;

[0027] The B component, i.e. curing agent, is an organic ester mixed with 60% glycerol diacetate and 40% glycerol triacetate, and its consumption is the water glass quality in A component 15% of

[0028] The graphite powder described therein is 180-200 mesh;

[0029] The attapulgite is 180-200 mesh;

[0030] Described sodium silicate NaO mSiO2 nH2O has a modulus of 2.3 and a Baume degree of 52.

[0031] The above-mentioned method of using a non-occupying paint, the steps are as follows:

[0032] First, cast the prepared wood and coat the surface with a layer of lithium-based grease with a thickness of 0.1mm;

[0033] Then apply component A to the surface of the mold to form a 2 mm coating;

[0034] Then evenly spr...

Embodiment 2

[0040] A non-occupancy paint, composed of A component and B component, A component and B component are stored separately;

[0041] Described A component is mixed by 40% graphite powder, 2% attapulgite, 15% water glass and 43% water by weight percentage;

[0042] The B component, i.e. curing agent, is an organic ester mixed with 60% glycerol diacetate and 40% glycerol triacetate, and its consumption is the water glass quality in A component 22% of

[0043] The graphite powder described therein is 180-200 mesh;

[0044] The attapulgite is 180-200 mesh;

[0045] Described water glass NaO mSiO2 nH2O, modulus is 2.3, and Baume degree is 52;

[0046] The above-mentioned method of using a non-occupying paint, the steps are as follows:

[0047] First, cast the prepared metal gray cast iron HT200, and coat the surface with a layer of lithium-based grease with a thickness of 0.05 mm;

[0048] Then apply component A to the surface of the mold to form a 1.5 mm coating;

[0049] Then...

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Abstract

The invention discloses a non-occupying coating and a using method thereof. The non-occupying coating consists of a component A and a component B, wherein the component A and the component B are independently stored; the component A is formed by mixing the following components in percentage by weight: 35-40 percent of graphite powder, 2-5 percent of attapulgite, 10-15 percent of water glass and 43-50 percent of water; the component B is a curing agent and is an organic ester formed by mixing 60 percent of glycerol diacetate and 40 percent of glycerol triacetate; and the amount of the component B is 15-22 percent of mass of the water glass. According to the non-occupying coating, because the component A and the component B are independently stored, the available time of the non-occupying coating is not limited, and when the non-occupying coating is further used, the curing time of the coating layer formed from the component A can be adjusted by controlling the coating amount of the curing agent in the component B; and therefore, the non-occupying coating is controllable in curing time.

Description

technical field [0001] The invention relates to a paint, in particular to a non-occupying paint and its application method. Background technique [0002] In the casting process, coatings are often used to improve the precision and surface quality of castings. At the same time, coatings also improve the strength of the sand mold surface, especially when clay sand molds and water glass sand molds are used. Non-occupancy coatings are also called transfer coatings, and their working principle is to brush or spray the coatings directly onto the surface of the core box or pattern, then fill the sand and compact it, and the coating layer and mold (core) sand are cured simultaneously under the constraints of the core box . When the mold is released, the coating can be transferred from the surface of the core box or pattern to the surface of the sand mold (core), thereby making a sand mold (core) with coating. Since the coating formed by this process method does not occupy the effe...

Claims

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Application Information

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IPC IPC(8): B22C3/00
Inventor 潘嘉祺孙亚琴陈麒忠顾赛婕
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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