AlZrTiN composite multi-gradient multi-coating turning blade and preparation method thereof

A multi-coating and multi-gradient technology, which is applied in turning equipment, coatings, and cutting tools for lathes, can solve the problems of large performance differences between coatings and tool substrates, large residual stresses in coatings, and low interface bonding strength. problems, achieve high bonding strength, reduce internal stress, reduce cutting force and cutting temperature

Active Publication Date: 2015-03-11
无锡锐志方达金属科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the low processing temperature of the commonly used PVD coating preparation process at present, the interface bonding strength between the coating and the tool substrate and between the coating and the coating is low, which limits the thickness of the coating and makes the coating more stable during cutting. Under the action of load, it will soon fail due to cracking and peeling. The performance difference between the coating and the tool substrate is large, and a large residual stress is easily formed in the coating, which leads to the cutting tool under the strong load of efficient cutting of difficult-to-machine materials. produce microcracks

Method used

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  • AlZrTiN composite multi-gradient multi-coating turning blade and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of AlZrTiN composite multi-gradient multi-coating turning blade: firstly clean the blade substrate, and then put the blade substrate and the required target into the vacuum chamber of the coating machine for coating. The coating process steps are as follows:

[0026] (1), Ti connection layer coating stage: After the vacuum chamber is evacuated, Ar gas is introduced to make the partial pressure of Ar gas in the vacuum chamber 0.4Pa, the bias voltage at both ends of the blade substrate is adjusted to 100V, and then the Ti target current is turned on and Keep it at 15A, and the coating time is 3.5min;

[0027] (2), TiN gradient transition layer coating stage: pass N into the vacuum chamber 2 , and adjust the amount of Ar gas to make N 2 The partial pressure ratio with Ar gas is 1.5:1, the air pressure in the vacuum chamber is 0.4Pa, the bias voltage at both ends of the blade substrate is adjusted to 100V, then the Ti target current is turned on and ...

Embodiment 2

[0032] The preparation method of AlZrTiN composite multi-gradient multi-coating turning blade: firstly clean the blade substrate, and then put the blade substrate and the required target into the vacuum chamber of the coating machine for coating. The coating process steps are as follows:

[0033] (1), Ti connection layer coating stage: After the vacuum chamber is evacuated, Ar gas is introduced to make the partial pressure of Ar gas in the vacuum chamber 0.6Pa, the bias voltage at both ends of the blade substrate is adjusted to 250V, and then the Ti target current is turned on and Keep it at 15A, and the coating time is 4.5min;

[0034] (2), TiN gradient transition layer coating stage: pass N into the vacuum chamber 2 , and adjust the amount of Ar gas to make N 2 The partial pressure ratio with Ar gas is 1.5:1, the air pressure in the vacuum chamber is 0.6Pa, the bias voltage at both ends of the blade substrate is adjusted to 100V, then the Ti target current is turned on and ...

Embodiment 3

[0039] The preparation method of AlZrTiN composite multi-gradient multi-coating turning blade: firstly clean the blade substrate, and then put the blade substrate and the required target into the vacuum chamber of the coating machine for coating. The coating process steps are as follows:

[0040] (1), Ti connection layer coating stage: After the vacuum chamber is evacuated, Ar gas is introduced to make the partial pressure of Ar gas in the vacuum chamber 0.5Pa, the bias voltage at both ends of the blade substrate is adjusted to 200V, and then the Ti target current is turned on and Keep it at 15A, and the coating time is 4min;

[0041] (2), TiN gradient transition layer coating stage: pass N into the vacuum chamber 2 , and adjust the amount of Ar gas to make N 2 The partial pressure ratio with Ar gas is 1.5:1, the air pressure in the vacuum chamber is 0.5Pa, the bias voltage at both ends of the blade substrate is adjusted to 100V, then the Ti target current is turned on and ke...

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Abstract

The invention discloses an AlZrTiN composite multi-gradient multi-coating turning blade and a preparation method thereof, and relates to the technical field of coating blades and preparation methods thereof. The turning blade comprises a blade basal body, wherein a Ti connecting layer, a TiN gradient transition layer, an AlZrTiN gradient transition layer, an AlZrTiN outer wear resistant layer and a TiN gradient transition outer lubricating layer are arranged on the surface of the blade basal body in sequence from inside to outside; the contents of Al, Zr and N elements in the AlZrTiN gradient transition layer are gradually increased from inside to outside; and the content of a Ti element in the TiN gradient transition outer lubricating layer is gradually increased from inside to outside. The preparation process comprises the following steps: firstly, the blade basal body is cleaned; and then, the blade basal body and a needed target are put in a vacuum chamber of a magnetron sputtering machine for coating. In the multi-coating turning blade, the bonding strength between coatings and the blade basal body and between the coatings is high, the internal stress of the coatings is low; and the turning blade has excellent wear resistance and comprehensive mechanical performance.

Description

technical field [0001] The invention relates to the technical field of coated inserts and preparation methods thereof, in particular to an AlZrTiN composite multi-gradient multi-coated turning insert and a preparation method thereof. Background technique [0002] In the equipment manufacturing industry, cutting processing occupies a dominant position, and high-speed and high-precision processing is the development direction of efficient cutting processing. High-end CNC equipment and cutting tools are indispensable processing tools for high-efficiency machining. Among them, cutting tools play the most important role in high-speed and high-efficiency machining. The coated tool is coated with a coating on the tool substrate. Because the coating has high heat resistance, hardness and wear resistance, and the tool substrate has high strength and toughness, the combination of the two makes the coated tool It has excellent comprehensive mechanical properties, so coated tools are w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/00B32B33/00C23C14/06
CPCC23C14/0036C23C14/0641C23C14/16
Inventor 李彬
Owner 无锡锐志方达金属科技发展有限公司
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