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AlCrYN/AlCrSiN nano composite gradient coating on surface of pressure casting die and preparation method thereof

A die-casting mold and nano-composite technology, applied in coating, metal material coating process, ion implantation plating, etc., can solve the problems of insufficient research on anti-adhesion performance, achieve good temperature resistance and anti-adhesion effect, reduce production cost, Effect of good anti-adhesion and temperature resistance properties

Pending Publication Date: 2020-08-11
宁波迈柯新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, many researches mainly focus on the research of temperature resistance and wear resistance, but the research on its anti-adhesion performance is not enough.

Method used

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  • AlCrYN/AlCrSiN nano composite gradient coating on surface of pressure casting die and preparation method thereof
  • AlCrYN/AlCrSiN nano composite gradient coating on surface of pressure casting die and preparation method thereof
  • AlCrYN/AlCrSiN nano composite gradient coating on surface of pressure casting die and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Prepare the die-casting mold, and sandblast the surface of the die-casting mold under the condition of sandblasting pressure of 0.3MPa, so that the surface roughness is R Z 1.6. The surface roughness of the die-casting mold prepared in this step is suitable, which is beneficial to the deposition of the coating and improves the adhesion of the coating.

[0043] Place the die-casting mold into the arc ion plating equipment for the next step.

[0044] Specifically, such as figure 1 As shown, the vacuum chamber of the arc ion plating equipment is surrounded by the furnace wall, and the size of the vacuum chamber is Φ1000x1000mm. The vacuum chamber is provided with an etching source 1 and an exhaust system 5 . Six columns of targets are installed on the wall of the vacuum furnace, namely the first CrY target 2, the second CrY target 3, the first AlCrY target 4, the first AlCrY target 7, the first AlCrSi target 8, and the second AlCrSi target 9. Further, a rotatable workp...

Embodiment 2

[0065] In this example, on the basis of Example 1, the process parameters of the preparation are adjusted. Only the differences are described here, and the similarities are not repeated here.

[0066] Prepare the die-casting mold, and perform sandblasting on the die-casting mold under the condition of sandblasting pressure of 0.8MPa, so that the surface roughness is Rz50.

[0067] Subsequently, the die-casting mold was nitrided under the condition of 500Pa, and the nitriding depth was 200 microns; and the die-casting mold was ion-etched under the condition of 500°C, the etching voltage was 150V, and the etching depth was 0.5 micron.

[0068] After ion etching, the AlCrYN / AlCrSiN nanocomposite gradient coating on the surface of the die-casting mold was prepared by arc ion plating equipment. First, the CrY target is turned on, and a 50nm CrY binding layer is deposited under the conditions of 0.5Pa and 150V.

[0069] Nitrogen gas was introduced, and a 500nm CrYN transition laye...

Embodiment 3

[0074] In this example, on the basis of Example 1, the process parameters of the preparation are adjusted. Only the differences are described here, and the similarities are not repeated here.

[0075] Prepare the die-casting mold, and blast the surface of the die-casting mold under the condition of sandblasting pressure of 0.5MPa to make the surface roughness R Z 10.

[0076]Subsequently, the die-casting mold was nitrided under the condition of 400Pa, and the nitriding depth was 100 microns; at 400°C, the mold was ion-etched, the etching voltage was 100V, and the etching depth was 0.3 microns.

[0077] After ion etching, the AlCrYN / AlCrSiN nanocomposite gradient coating on the surface of the die-casting mold was prepared by arc ion plating equipment. First, the CrY target is turned on, and a 40 nm thick CrY binding layer is deposited under the conditions of 0.2 Pa and 100 V.

[0078] Nitrogen gas was introduced, and a CrYN transition layer with a thickness of 200 nm was dep...

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Abstract

The invention discloses an AlCrYN / AlCrSiN nano composite gradient coating on the surface of a pressure casting die and a preparation method thereof. The coating sequentially comprises a CrY bonding layer, a CrYN transition layer, a supporting layer of a CrYN / AlCrSiN nano composite multilayer film and an orange peel defect prevention wear-resistant temperature-resistant layer of the AlCrYN / AlCrSiNnano composite multilayer film from the surface of the pressure casting die to the outside; the bonding layer is prepared by an arc ion plating method; the transition layer is prepared by adopting thearc ion plating method under a nitrogen environment; the supporting layer is prepared by adopting the arc ion plating method and formed by alternating CrYN layers and AlCrSiN layers layer by layer; and the orange peel defect prevention wear-resistant temperature-resistant layer is prepared by adopting the arc ion plating method and formed by alternating AlCrYN layers and AlCrSiN layers layer by layer. The properties of the AlCrN coating are further improved by using two design ideas of rare earth doping and nano multilayer structure, so that the coating has good adhesion resistance and temperature resistance, and the problem of orange peel defects caused by adhesion is solved.

Description

technical field [0001] The invention belongs to the technical field of film materials, and in particular relates to an AlCrYN / AlCrSiN nanocomposite gradient coating on the surface of a die-casting mold and a preparation method thereof. Background technique [0002] Automobile is the main field of die casting technology application, accounting for more than 70% of die casting applications. Under the background of "automobile lightweight" and the development of new energy vehicles has become an inevitable trend, in addition to the use of a large number of precision die-casting parts for automobile engines, gearboxes, transmission systems, etc., aluminum alloy die-casting parts are also used for large components such as body frames. . According to statistics, 95% of the structure of the Tesla Model S series is made of aluminum alloy die-casting. [0003] Die casting mold is the most important part of die casting production line. High pressure and high speed are the main char...

Claims

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Application Information

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IPC IPC(8): C23C14/32C23C14/06C23C14/02C23C14/14C23C14/50
CPCC23C14/325C23C14/0641C23C14/022C23C14/06C23C14/0021C23C14/14C23C14/505
Inventor 杨兵朱恩光蒋佳丽朱杨俊卢嘉日潘崇恩吴伟周林
Owner 宁波迈柯新材料科技有限公司
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