High temperature aluminium liquid corrosion resistant paint, and preparation method thereof

A technology of high temperature resistance and aluminum liquid, applied in the field of materials, can solve the problems of pollution, land occupation, large red mud discharge, etc., and achieve the effects of good chemical stability, uniform spreading, and high melting point

Pending Publication Date: 2019-05-03
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Red mud is the polluting waste slag discharged when the aluminum industry extracts alumina. The discharge of red mud is large, and it generally needs to be stacked in a large area of ​​the yard, occupying land and causing serious pollution to the environment.

Method used

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  • High temperature aluminium liquid corrosion resistant paint, and preparation method thereof
  • High temperature aluminium liquid corrosion resistant paint, and preparation method thereof
  • High temperature aluminium liquid corrosion resistant paint, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The invention provides a high-temperature resistant aluminum liquid corrosion coating, which is made of the following raw materials in weight percentage: 50% of glass powder, 10% of red mud, 25% of borax, 5% of boric acid, 5% of carbonate, 3% of zirconia and oxide Titanium 2%, the total of the above raw materials is 100%; the carbonate is potassium carbonate.

[0037] The preparation method of the high-temperature resistant molten aluminum corrosion coating is characterized in that it comprises the following steps:

[0038] (1) Dry the red mud, mix it with other raw materials and crush it into a powder with a particle size of less than 200 mesh, add a binder and water to make a slurry;

[0039] (2) coating the slurry on the workpiece to form a coating with a thickness of 0.4mm, and drying;

[0040] (3) After the drying is completed, high-temperature sintering is carried out at a temperature of 900° C. and kept for 40 minutes, and cooled with the furnace to complete the...

Embodiment 2

[0042] The invention provides a high temperature resistant molten aluminum corrosion coating, which is made of the following raw materials in weight percentage: 30% of glass powder, 25% of red mud, 20% of borax, 5% of boric acid, 10% of carbonate, 3% of zirconia and oxide Titanium 8%, the total of the above raw materials is 100%;

[0043] Also include the binder of 25% of the total weight of raw materials, the binder is water glass;

[0044] Described carbonate is sodium carbonate.

[0045] The preparation method of the high-temperature resistant molten aluminum corrosion coating is characterized in that it comprises the following steps:

[0046] (1) Dry the red mud, mix it with other raw materials and crush it into a powder with a particle size of less than 200 mesh, add a binder and water to make a slurry;

[0047] (2) coating the slurry on the workpiece to form a coating with a thickness of 0.3 mm, and drying;

[0048] (3) After the drying is completed, high-temperature si...

Embodiment 3

[0050] The invention provides a high-temperature resistant aluminum liquid corrosion coating, which is made of the following raw materials in weight percentage: 30% of glass powder, 10% of red mud, 30% of borax, 6% of boric acid, 6% of carbonate, 10% of zirconia and oxide Titanium 8%, the total of the above raw materials is 100%;

[0051] It also includes an adhesive of 30% of the total weight of raw materials, and the adhesive is water glass;

[0052] Described carbonate is sodium carbonate and potassium carbonate with a weight ratio of 2:1.

[0053] The preparation method of the high-temperature resistant molten aluminum corrosion coating is characterized in that it comprises the following steps:

[0054] (1) Dry the red mud, mix it with other raw materials and crush it into a powder with a particle size of less than 200 mesh, add a binder and water to make a slurry;

[0055] (2) coating the slurry on the workpiece to form a coating with a thickness of 0.3 mm, and drying; ...

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Abstract

The invention belongs to the technical field of material, and more specifically relates to a high temperature aluminium liquid corrosion resistant paint, and a preparation method thereof. According tothe preparation method, raw materials are combined, glass powder and red mud are taken as the main components, borax, boric acid, and a carbonate are added as fluxing agents to reduce paint melting point, and improve the spreadability and fluidity on workpieces; zirconium oxide and titanium oxide are added to reduce paint layer thermal expansion coefficient, increase paint layer chemical stability and mechanical strength; isolating of contact and erosion of high temperature aluminium liquid on workpieces is realized, and excellent corrosion resistance is achieved. According to the preparationmethod of the high temperature aluminium liquid corrosion resistant paint, a bonding agent and water are added into the raw material components, an obtained mixture is used for uniform coating of workpieces, and high temperature sintering is carried out, and finally, a compact protective coating layer is formed on workpiece, combination of the coating layer with the workpiece is firm, hardness ishigh, chemical stability is high, and excellent washing-out resistance and corrosion resistance on high temperature aluminium liquid are achieved.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a high-temperature molten aluminum corrosion-resistant coating and a preparation method thereof. Background technique [0002] Corrosion of high-temperature molten aluminum is a problem that has not been effectively solved in metallurgy and casting production. This corrosion phenomenon will cause corrosion and scrapping of equipment and tools during the manufacturing process of aluminum profiles, reduce the quality of aluminum profiles, and increase production costs. In severe cases, it will also affect the normal operation of the aluminum profile in the thermal processing process, and the man-hours for replacing equipment and tools will be increased. Therefore, it is necessary to take measures to prevent or reduce the corrosion of high-temperature molten aluminum on production equipment and tools. At present, among the commonly used methods of preventing corrosion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00C23D5/02C23D7/00C23D11/00
Inventor 汤陆文
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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