Anti-sticking coating

A technology of anti-stick coating and surface layer, which is applied in the direction of coating, metal material coating technology, layered products, etc., can solve the problem of inability to use repeatedly and for a long time, affect the apparent quality of products, and increase the complexity of processing, etc. problem, to achieve the effect of large wetting angle, high temperature hardness, and reduced affinity

Active Publication Date: 2013-05-15
GUANGDONG YUEKE NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the processing of the blanks composed of plastic or high molecular polymers to form final objects such as roller bodies, due to the strong adsorption and active reactive groups of general polymers, especially polyurethane, epoxy, etc. Materials such as resins are prone to physical and chemical reactions with the metal surface, which not only affects the apparent quality of the product, increases the complexity of processing, but also has a considerable impact on the internal quality of the product.
RTV silicone rubber, polyethylene, surfactants, silicone oil, ali

Method used

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  • Anti-sticking coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Using plasma spraying equipment, the anti-sticking coating is sprayed on a roller with a diameter of 300 mm and a length of 1500 mm. Spray the NiAl primer first, the parameters are:

[0034] Hydrogen: 8(l / min)

[0035] Argon: 40(l / min)

[0036] Current: 630(A)

[0037] Spraying speed: 10(mm / s)

[0038] Cooling gas pressure: 0.4(MPa)

[0039] Bottom thickness: 0.2 (mm)

[0040] After spraying the bottom layer, and then spray the surface layer material, the powder content of the surface layer is: iron (2%), nickel (55%), chromium (5%), boron (3%), silicon (5%), manganese (0.1%) ) +30% tungsten carbide particles. The spray parameters are:

[0041] Hydrogen: 8(l / min)

[0042] Argon: 40(l / min)

[0043] Current: 630(A)

[0044] Spraying speed: 10(mm / s)

[0045] Cooling gas pressure: 0.4(MPa)

[0046] Surface layer thickness: 0.5 (mm)

[0047] Final surface roughness: Ra0.8-1.0um.

[0048] The roll with anti-stick coating is used in the production line of automot...

Embodiment 2

[0050] The anti-stick coating was sprayed on a roll with a diameter of 360 mm and a length of 1700 mm using arc spraying equipment. First spray NiCr primer, the parameters are:

[0051] Spray gun: gas wire spray gun

[0052] Oxygen: 0.8m3 / h

[0053] Acetylene: 0.5m3 / h

[0054] Compressed air: 5Kg / cm3

[0055] Spray distance: 90-110mm

[0056] Spraying the surface layer, the powder content of the surface layer is: iron (5%), nickel (60.8%), chromium (14%), boron (3%), silicon (2.9%), manganese (0.3%) + 15% carbonization Chrome particles. The spray parameters are:

[0057] Spray gun: arc spray gun

[0058] Oxygen: 0.8m3 / h

[0059] Acetylene: 0.5m3 / h

[0060] Compressed air: 5Kg / cm3

[0061] Spray distance: 90-110mm

[0062] After spraying, the coating has good performance and can meet the requirements of use, and its service life is about 5 times longer than that of Teflon-treated crankshafts.

Embodiment 3

[0064] Using plasma spraying equipment, the anti-sticking coating is sprayed on a roller with a diameter of 240 mm and a length of 1200 mm. Spray the NiCrAl primer first, the parameters are:

[0065] Hydrogen: 9(l / min)

[0066] Argon: 45(l / min)

[0067] Current: 650(A)

[0068] Spraying speed: 10(mm / s)

[0069] Cooling gas pressure: 0.6(MPa)

[0070] Bottom layer thickness: 0.18 (mm)

[0071] After spraying the bottom layer, and then spray the surface layer material, the powder content of the surface layer is: iron (10%), nickel (54%), chromium (15%), boron (7%), silicon (3.9%), manganese (0.1%) ) +10% chromium carbide particles. The spray parameters are:

[0072] Hydrogen: 10(l / min)

[0073] Argon: 46(l / min)

[0074] Current: 650(A)

[0075] Spraying speed: 10(mm / s)

[0076] Cooling gas pressure: 0.6(MPa)

[0077] Surface layer thickness: 0.6 (mm)

[0078] Final surface roughness: Ra0.8um.

[0079] After spraying, the roller surface coating is ground and polishe...

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Abstract

The invention discloses an anti-sticking coating. The anti-sticking coating comprises a bottom layer and a surface layer, wherein the bottom layer is used for binding a blank piece with the surface layer and positioned between the surface of the blank piece and the surface layer, the surface layer is positioned on the bottom layer, the surface layer comprises a powder matrix and a hard phase mixed in the powder matrix, the power matrix mainly comprises ferrum, nickel and chromium; and the hard phase comprises tungsten carbide, chromium carbide and the like. The anti-sticking coating adopts a structure that the coating is formed by combining the powder matrix taking ferrum, nickel and chromium as main substances and manganese, molybdenum, boron, silicon and cobalt as secondary substances, with the hard phase of large particle ceramic or metal ceramic such as tungsten carbide, chromium carbide with the size of larger than 5mu m, so that the surface free energy on the surface of the coating and the surface tension of the coating can be obviously reduced, the compatibility of plastic or other macromolecular material blank pieces with the coating can be reduced, the sticking possibility of the two can be greatly decreased, in addition, the coating can keep higher hardness at a high temperature, and overcome the defects that paint of Telfon and the like is not wear-resistant and easy to deform at a high temperature.

Description

technical field [0001] The invention relates to an anti-adhesive coating, in particular to an anti-adhesive coating prepared on a blank made of plastic or high molecular polymer. Background technique [0002] During the processing of the blanks composed of plastic or high molecular polymers to form final objects such as roller bodies, due to the strong adsorption and active reactive groups of general polymers, especially polyurethane, epoxy, etc. Materials such as resins are prone to physical and chemical reactions with the metal surface, which not only affects the apparent quality of the product, increases the complexity of processing, but also has a considerable impact on the internal quality of the product. RTV silicone rubber, polyethylene, surfactants, silicone oil, aliphatic oil, etc. are used in scientific research and production. Although the above materials can solve some problems, the problem is that they have single functions and cannot meet the needs of various p...

Claims

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Application Information

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IPC IPC(8): C23C4/06B32B15/04C23C4/02C23C4/073C23C4/08C23C4/131C23C4/134
Inventor 张忠诚朱晖朝陈志坤刘自敬黄建王枫朱霞高倪伟邦雷运生
Owner GUANGDONG YUEKE NEW MATERIALS TECH CO LTD
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