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A kind of mold high temperature resistant pvd coating and preparation method thereof

A technology of high temperature resistance and mold, which is applied in the direction of coating, metal material coating process, vacuum evaporation plating, etc., can solve the problems of mold scrapping and inability to be reused, and achieve the goal of reducing yield loss and production cost Effect

Active Publication Date: 2021-11-19
CIXI YIMEIJIA ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the wear of the mold exceeds the customer's requirements, the mold can only be scrapped and cannot be reused

Method used

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  • A kind of mold high temperature resistant pvd coating and preparation method thereof

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preparation example Construction

[0022] The present invention also provides a method for preparing a mold high temperature resistant PVD coating, comprising the steps of:

[0023] (1) Purify the surface of the mold, finely grind and polish the corroded or scratched mold to make the mold surface reach a mirror state, and then use acetone and alcohol to ultrasonically clean and dry the mold;

[0024] (2) Use the arc power bombardment method to make a layer of AlCrN on the mold surface; the bias voltage of the arc power bombardment method is controlled at 220~360V, and the time is controlled at 5~8 minutes; preferably, the arc power bombardment method bias is controlled at 280V, the time is controlled at 6 minutes;

[0025] (3) Using vapor deposition method to use SiO2 and TiN to carry out intermediate multi-layer transition on the bottom layer; the equipment vacuum degree of the vapor deposition method is required to be above 3×10-5Torr, the bias value is set at 70V-120V, and the target material The current is...

Embodiment 1

[0029] A method for preparing a mold high temperature resistant PVD coating:

[0030] (1) Purify the surface of the mold, finely grind and polish the corroded or scratched mold to make the mold surface reach a mirror state, and then use acetone and alcohol to ultrasonically clean and dry the mold;

[0031] (2) use the arc power bombardment method to make a layer of AlCrN on the mold surface; the arc power bombardment method bias is controlled at 220V, and the time is controlled at 5 minutes;

[0032] (3) Use vapor deposition method to use SiO2 and TiN to carry out intermediate multi-layer transition on the bottom layer; the vacuum degree of the equipment of the vapor deposition method is required to be 3 × 10-5Torr, the bias value is set at 70V, and the target current is set In 4A; the number of layers in the middle layer is controlled at 10 layers; the single-layer deposition time of the vapor deposition method is controlled at 15 minutes;

[0033] (4) Put a protective layer...

Embodiment 2

[0035] A method for preparing a mold high temperature resistant PVD coating:

[0036] (1) Purify the surface of the mold, finely grind and polish the corroded or scratched mold to make the mold surface reach a mirror state, and then use acetone and alcohol to ultrasonically clean and dry the mold;

[0037] (2) use the arc power bombardment method to make a layer of AlCrN on the mold surface; the arc power bombardment method bias is controlled at 280V, and the time is controlled at 6 minutes;

[0038] (3) Use vapor deposition method to use SiO2 and TiN to carry out intermediate multi-layer transition on the bottom layer; the equipment vacuum degree of the vapor deposition method is required to be 4×10-5Torr, the bias value is set at 90V, and the target current is set In 6A; the number of layers in the middle layer is controlled at 11 layers; the single-layer deposition time of the vapor deposition method is controlled at 20 minutes;

[0039] (4) Put a protective layer CrN on t...

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Abstract

The invention provides a mold high-temperature-resistant PVD coating and a preparation method thereof. The PVD coating is composed of a bottom layer, an intermediate multilayer and a protective layer; the bottom layer contains AlCrN, and the intermediate multilayer contains SiO2 and TiN. The protective layer contains CrN. The preparation method comprises the following steps: step (1): purifying the surface of the mold; step (2): forming a layer of AlCrN on the surface of the mold by using an arc power bombardment method; Perform intermediate multi-layer transition on the bottom layer; step (4): apply a protective layer CrN on the intermediate multi-layer with a high-frequency and high-energy power supply, and the result is obtained. After the aluminum alloy mold is processed by this process, it can still meet the performance requirements of the film layer such as corrosion resistance and high temperature resistance without the need for water plating treatment and the thickness of the film layer is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of hot extrusion die surface treatment, in particular to a die high temperature resistant PVD coating and a preparation method thereof. Background technique [0002] With the continuous development of China's auto industry and the continuous introduction of new energy vehicles, the output and sales of China's auto market have reached a new height. Some auto brands have begun to look for high-quality suppliers in China to provide global purchase. This is both an opportunity and a challenge for China's auto parts industry. We must seize this opportunity and make breakthroughs in all aspects to meet the growing requirements of customers. For aluminum thermal processing enterprises, hot extrusion dies are the basis of products. All products are formed through hot extrusion dies, and the maintenance of the dies is particularly critical. When the wear of the mold exceeds the customer's requirements, the mold can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32C23C14/06C23C14/10C23C14/02
CPCC23C14/028C23C14/0641C23C14/10C23C14/325
Inventor 罗布湾
Owner CIXI YIMEIJIA ALUMINUM CO LTD
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