Heat treatment anti-carburizing coating and preparation method thereof

Abstract

The invention discloses a heat treatment anti-carburizing coating which comprises the following raw materials in parts by weight: 95-108 parts of titanium dioxide, 56-65 parts of quartz sand, 28-32 parts of borax, 28-32 parts of copper oxide, 28-32 parts of silica gel and 240-260 parts of water. The heat treatment anti-carburizing coating is high in sintering speed and can be sintered into a shell at the temperature of 650 DEG C; the anti-carburizing effect is good, and the average carbon content of the workpiece surface within the depth of 1 mm is smaller than 0.1%; the raw materials are easy to obtain, and the cost is low; the coating is water-based and environment-friendly, and does not use any organic solvent; the composition is convenient to use, is powdery, can be directly used after being mixed with water and stirred, does not need to be ground, can be prepared on site and can be prepared at any time, and is convenient to transport and store.

Description

Technical Field

[0001] The invention relates to the technical field of anti-carburizing coatings, and in particular to a heat-treated anti-carburizing coating and a preparation method thereof. Background Art

[0002] Anti-carburizing coating is a local protective coating used to prevent the penetration of carbon elements in certain parts when the metal is subjected to chemical heat treatment. It is a common metal heat treatment protective coating. It is composed of binders, fillers such as glass and ceramics, pigments, and solvents. There are anti-carburizing coatings mainly including ceramics, chromosilicates, aluminum borates, boron oxide, copper oxide, nickel oxide, glass frits, etc.

[0003] A variety of anti-carburizing compositions have been disclosed in the prior art, such as the Chinese patent application with application number CN201910597388.0, which discloses a heat-treated anti-carburizing coating, wherein the weight percentage of the heat-treated anti-carburizing coating is as follows: 15% to 30% boric acid, 8% to 20% titanium dioxide, 6% to 10% lithium bentonite, 3% to 15% kaolin, 3% to 5% ethanol, 3% to 5% chrome yellow, 3% to 5% sodium carboxymethyl cellulose, 3% to 10% maleic acid, 1% to 5% triethanolamine, 0.5% to 3% zinc chloride and 0.5 to 1% ferrous sulfate, and the balance is deionized water. Among the raw materials of the above anti-carburizing coating, boric acid is irritating and toxic; sodium cellulose is easily affected by microorganisms and deteriorates; ethanol is flammable, and there are fire safety hazards during storage, transportation and use.

[0004] 1. However, the existing heat-treated anti-carburizing coating has poor anti-seepage effect, slow sintering speed, complex formulation, and requires the use of organic solvents, which is inconvenient to use, transport, and store.

[0005] Based on the above situation, the present invention proposes a heat-treated anti-carburizing coating and a preparation method thereof, which can effectively solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a heat-treated anti-carburizing coating and a preparation method thereof. The heat-treated anti-carburizing coating of the present invention has a fast sintering speed and can be sintered into a shell at 650°C; has a good anti-carburizing effect, and the average carbon content within 1 mm depth of the workpiece surface is less than 0.1%; has a simple formula, is easy to obtain raw materials, and has a low cost; is water-based, environmentally friendly, and does not use any organic solvents; is easy to use, and the composition is in powder form, can be directly used by mixing with water without grinding, can be prepared on site, and can be prepared as needed, and is convenient for transportation and storage.

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0008] A heat-treated anti-carburizing coating comprises the following raw materials in parts by weight:

[0009]

[0010] Preferably, the heat-treated anti-carburizing coating comprises the following raw materials in parts by weight:

[0011]

[0012] Preferably, the heat-treated anti-carburizing coating further comprises 2 to 4 parts of sodium carboxymethyl cellulose.

[0013] Preferably, the heat-treated anti-carburization coating further includes 3 parts of sodium carboxymethyl cellulose.

[0014] Preferably, the heat-treated anti-carburizing coating further comprises 3 to 6 parts of triethanolamine.

[0015] Preferably, the heat-treated anti-carburizing coating further comprises 4.5 parts of triethanolamine.

[0016] Preferably, the heat-treated anti-carburizing coating further comprises 3 to 6 parts of zinc aluminate.

[0017] Preferably, the heat-treated anti-carburizing coating further includes 4.5 parts of zinc aluminate.

[0018] Preferably, the heat-treated anti-carburizing coating further comprises 4 to 8 parts of diantimony phosphate;

[0019] Preferably, the heat-treated anti-carburization coating further includes 6 parts of diantimony phosphate.

[0020] The present invention also provides a method for preparing the heat-treated anti-carburizing coating, comprising the following steps:

[0021] A. Weigh the raw material components of the heat-treated anti-carburizing coating respectively according to weight parts;

[0022] B. Evenly mix the weighed raw material components of the heat-treated anti-carburizing coating to obtain the heat-treated anti-carburizing coating.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] The heat-treated anti-carburizing coating of the invention has a fast sintering speed and can be sintered into a shell at 650°C; it has a good anti-carburizing effect, and the average carbon content within a depth of 1 mm on the surface of the workpiece is less than 0.1%; it has a simple formula, is easy to obtain raw materials, and has a low cost; it is water-based, environmentally friendly, and does not use any organic solvents; it is easy to use, the composition is in powder form, and can be directly used by mixing with water without grinding, and can be prepared on site and prepared as needed, which is convenient for transportation and storage. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific examples, but it should not be understood as a limitation of this patent.

[0026] Embodiment 1:

[0027] A heat-treated anti-carburizing coating comprises the following raw materials in parts by weight:

[0028]

[0029] Wherein, the heat-treated anti-carburization coating also includes 2 parts of sodium carboxymethyl cellulose.

[0030] Wherein, the heat-treated anti-carburizing coating also includes 3 parts of triethanolamine.

[0031] Wherein, the heat-treated anti-carburizing coating also includes 3 parts of zinc aluminate.

[0032] Wherein, the heat-treated anti-carburizing coating also includes 4 parts of antimony phosphate;

[0033] The preparation method of the heat-treated anti-carburizing coating comprises the following steps:

[0034] A. Weigh the raw material components of the heat-treated anti-carburizing coating respectively according to weight parts;

[0035] B. Evenly mix the weighed raw material components of the heat-treated anti-carburizing coating to obtain the heat-treated anti-carburizing coating.

[0036] Embodiment 2:

[0037] A heat-treated anti-carburizing coating comprises the following raw materials in parts by weight:

[0038]

[0039] Wherein, the heat-treated anti-carburization coating also includes 4 parts of sodium carboxymethyl cellulose.

[0040] Wherein, the heat-treated anti-carburizing coating also includes 6 parts of triethanolamine.

[0041] Wherein, the heat-treated anti-carburization coating also includes 6 parts of zinc aluminate.

[0042] Wherein, the heat-treated anti-carburizing coating also includes 8 parts of antimony phosphate;

[0043] The preparation method of the heat-treated anti-carburizing coating comprises the following steps:

[0044] A. Weigh the raw material components of the heat-treated anti-carburizing coating respectively according to weight parts;

[0045] B. Evenly mix the weighed raw material components of the heat-treated anti-carburizing coating to obtain the heat-treated anti-carburizing coating.

[0046] Embodiment 3:

[0047] A heat-treated anti-carburizing coating comprises the following raw materials in parts by weight:

[0048]

[0049]

[0050] Wherein, the heat-treated anti-carburization coating also includes 3 parts of sodium carboxymethyl cellulose.

[0051] Wherein, the heat-treated anti-carburizing coating further comprises 4.5 parts of triethanolamine.

[0052] Wherein, the heat-treated anti-carburizing coating also includes 4.5 parts of zinc aluminate.

[0053] Wherein, the heat-treated anti-carburization coating also includes 6 parts of antimony phosphate.

[0054] The preparation method of the heat-treated anti-carburizing coating comprises the following steps:

[0055] A. Weigh the raw material components of the heat-treated anti-carburizing coating respectively according to weight parts;

[0056] B. Evenly mix the weighed raw material components of the heat-treated anti-carburizing coating to obtain the heat-treated anti-carburizing coating.

[0057] The heat-treated anti-carburizing coating of the invention has a fast sintering speed and can be sintered into a shell at 650°C; it has a good anti-carburizing effect, and the average carbon content within a depth of 1 mm on the surface of the workpiece is less than 0.1%; it has a simple formula, is easy to obtain raw materials, and has a low cost; it is water-based, environmentally friendly, and does not use any organic solvents; it is easy to use, the composition is in powder form, and can be directly used by mixing with water without grinding, and can be prepared on site and prepared as needed, which is convenient for transportation and storage.

[0058] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. 。

Claims

1. A heat-treated anti-carburizing coating, characterized in that: The invention comprises the following raw materials in parts by weight:

2. The heat-treated anti-carburizing coating according to claim 1, characterized in that: Made from the following raw materials in parts by weight:

3. The heat-treated anti-carburizing coating according to claim 1 or 2, characterized in that: The heat-treated anti-carburizing coating also includes 2 to 4 parts of sodium carboxymethyl cellulose.

4. The heat-treated anti-carburizing coating according to claim 3, characterized in that: The heat-treated anti-carburizing coating also includes 3 parts of sodium carboxymethyl cellulose.

5. The heat-treated anti-carburizing coating according to claim 1 or 2, characterized in that: The heat-treated anti-carburizing coating also includes 3 to 6 parts of triethanolamine.

6. The heat-treated anti-carburizing coating according to claim 5, characterized in that: The heat-treated anti-carburizing coating also includes 4.5 parts of triethanolamine.

7. The heat-treated anti-carburizing coating according to claim 1 or 2, characterized in that: The heat-treated anti-carburizing coating also includes 3 to 6 parts of zinc aluminate.

8. The heat-treated anti-carburizing coating according to claim 7, characterized in that: The heat-treated anti-carburizing coating also includes 4.5 parts of zinc aluminate.

9. The heat-treated anti-carburizing coating according to claim 1 or 2, characterized in that: The heat-treated anti-carburizing coating further comprises 4 to 8 parts of antimony phosphate; The heat-treated anti-carburizing coating also includes 6 parts of antimony phosphate.

10. A method for preparing a heat-treated anti-carburizing coating according to any one of claims 1 to 9, characterized in that: The following steps are involved: A. Weigh the raw material components of the heat-treated anti-carburizing coating respectively according to weight parts; B. Evenly mix the weighed raw material components of the heat-treated anti-carburizing coating to obtain the heat-treated anti-carburizing coating.

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