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Heat-preservation demolding coating for casting

A coating and demoulding technology, used in casting molding equipment, coatings, molds, etc., can solve problems such as poor wear resistance and poor adhesion, and achieve good adhesion, good protection, and good fluidity. Effect

Pending Publication Date: 2021-03-16
LONGKOU DACHUAN PISTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the current conventional metal cast aluminum coatings have poor adhesion and poor wear resistance.

Method used

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  • Heat-preservation demolding coating for casting
  • Heat-preservation demolding coating for casting
  • Heat-preservation demolding coating for casting

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The present embodiment selects the coating of the component configuration of following mass fraction for use: mica 6%; Boron nitride 10%; Titanium dioxide 4%; Water glass 9%; Sodium bentonite 5%; Silica sol 14%; For water and unavoidable impurities.

Embodiment 2

[0028] The present embodiment selects the coating of the component configuration of following mass fraction for use: mica 5%; Boron nitride 8%; Titanium dioxide 3%; Water glass 8%; Sodium bentonite 3%; Silica sol 12%; For water and unavoidable impurities.

Embodiment 3

[0030] The present embodiment selects the coating of the component configuration of following mass fraction for use: mica 7%; Boron nitride 12%; Titanium dioxide 4%; Water glass 10%; Sodium bentonite 6%; Silica sol 15%; For water and unavoidable impurities.

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Abstract

The invention provides a heat-preservation demolding coating for casting, and mainly relates to the field of coatings. The heat-preservation demolding coating for casting is prepared from the following components in percentage by mass: 5-7% of mica, 8-12% of boron nitride, 3-4% of titanium dioxide, 8-10% of sodium silicate, 16-22% of a binding agent, and the balance of water and inevitable impurities. The heat-preservation demolding coating has the advantages that the adhesive force of the heat-preservation demolding coating on a working surface of a metal mold is relatively good, the wear resistance is relatively good, and the surface smoothness of a cast casting is relatively fine.

Description

technical field [0001] The invention mainly relates to the field of coatings, in particular to a thermal insulation release coating for casting. Background technique [0002] Ordinary sand casting can no longer meet the needs of casting production. More special castings have been used on a large scale due to their advantages of high precision, good damage resistance, and low cost. Among them, metal casting is characterized by its high process performance and process The advantages of simplicity and high surface finish of castings are being used more and more. Among them, the metal mold thermal insulation coating has the function of heat insulation, which can reduce the cooling speed of the solution, prevent the casting from being white, and weaken the thermal impact of the solution on the metal mold during pouring, relax the thermal stress, prevent the erosion of the molten metal, and have a strong impact on the metal mold. to the protective effect. In addition, it will he...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 解居麟徐士昌崔广澎王君
Owner LONGKOU DACHUAN PISTON
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