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Novel efficient coating for aluminum alloy casting and preparation method and use method thereof

A technology of aluminum alloy and coating, which is applied in the field of aluminum alloy casting and can solve problems such as increasing iron

Inactive Publication Date: 2020-10-16
YUZHOU SHENYUN MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. Keeping the aluminum alloy solution in an iron container for a long time will also cause "iron increase"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a novel high-efficiency coating for aluminum alloy casting, comprising the steps of:

[0025] (1) Heat 79kg of water to 60°C to obtain warm water at 60°C;

[0026] (2) Add 3kg of sodium silicate, 8kg of zinc oxide and 10kg of calcium hydroxide to the above-mentioned warm water at 60°C, and stir evenly to obtain a new high-efficiency coating for aluminum alloy casting.

[0027] The application method of the above-mentioned new high-efficiency coating for aluminum alloy casting is as follows:

[0028] (1) Use a spray gun to evenly spray paint on the surface of iron smelting tools for 2~3 times, so that the thickness of the coating film reaches 30~50μm. Before each spraying, preheat the iron smelting tools. Preheat the smelting tool to 200°C, and preheat the iron smelting tool to 250°C before the second or third spraying;

[0029] (2) After spraying, keep it warm at 250°C for 5 minutes to completely dry the water.

[0030] The novel high-efficienc...

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Abstract

The invention discloses a novel efficient coating for aluminum alloy casting. The novel efficient coating comprises the following raw materials of, in percentage by weight, 3%-5% of sodium silicate, 6%-8% of zinc oxide, 8%-10% of calcium hydroxide and the balance water; the invention further discloses a preparation method of the novel efficient paint, the preparation method of the novel efficientpaint comprises the following steps that (1), the formula amount of water is heated to 60 DEG C to obtain 60 DEG C warm water; and (2) the sodium silicate, zinc oxide and calcium hydroxide according to the formula ratio are added into the 60 DEG C warm water, and uniform stirring is carried out to obtain the novel efficient coating for aluminum alloy casting; and the invention further discloses ause method of the novel efficient coating, and the use method of the novel efficient coating comprises the following steps that (1) the coating is uniformly sprayed on the surface of an iron smeltingtool for 2-3 times by using a spray gun so that the thickness of a film can reach 30-50 microns, the iron smelting tool is firstly preheated before each spraying; and (2) after spraying is finished, heat preservation is carried out till moisture is completely dried. The novel efficient coating can effectively control the content of the iron element in the aluminum alloy casting process, and the effect of preventing iron increase is good.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy casting, and in particular relates to a novel high-efficiency coating for aluminum alloy casting and its preparation method and application method. Background technique [0002] Due to its characteristics - light weight, high strength, high mechanical properties and corrosion resistance, aluminum alloy materials are widely used in aviation, electric power, and construction industries. At present, aluminum alloys have the largest number of die castings, but aluminum alloy castings Iron is a harmful element. When the iron element in aluminum alloy castings is less than 0.6%, mold sticking is prone to occur during the production process. When the iron element in aluminum alloy castings is higher than 1%, the mechanical properties of aluminum alloy castings will deteriorate sharply. The content of iron element in aluminum alloy casting is generally controlled below 0.6%, which will lead to poor...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 席自然
Owner YUZHOU SHENYUN MACHINERY CO LTD
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