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Alzrn multi-component composite hard-coated cutting tool and its preparation process

A hard coating, multi-composite technology, applied in metal material coating process, coating, ion implantation plating and other directions, can solve the problem that the actual effect needs to be improved, to improve physical and mechanical properties, improve strength and toughness, The effect of increasing bond strength

Active Publication Date: 2018-04-17
常州肯达工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the multi-component composite coating mainly improves the difference in physical properties between different coating components by adding a metal transition layer, and the actual effect needs to be improved.

Method used

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  • Alzrn multi-component composite hard-coated cutting tool and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] like figure 1 As shown, an AlZrN multi-component composite hard coating tool, the tool is a common milling insert, the base material is: cemented carbide YT15; the coating material is: Zr, Zr / Al and AlZrN; the deposition method is: Using the multi-arc ion plating deposition method, using a Zr multi-arc target and an Al multi-arc target, a Zr transition layer, a Zr / Al gradient transition layer and an AlZrN multi-component hard coating are sequentially deposited on the surface of the tool substrate. The preparation process for:

[0021] 1) Pretreatment: Grind and polish the surface of the tool base to remove surface oil, rust and other impurities, then put it in alcohol and acetone in turn, ultrasonically clean for 30 minutes each, remove oil and other attachments on the tool surface, and dry it with a hair dryer Quickly put into the coating machine, vacuum to 8.0×10 -3 Pa, heat to 300°C, keep warm for 30-40min;

[0022] 2) Ion cleaning: pass Ar gas, the pressure is 1....

Embodiment 2

[0028] like figure 1 As shown, an AlZrN multi-component composite hard-coated tool is an ordinary twist drill, and its base material is: high-speed steel W18Cr4V; the coating material is: Zr, Zr / Al and AlZrN; the deposition method is: using multi-arc The ion plating deposition method uses a Zr multi-arc target and an Al multi-arc target to sequentially deposit a Zr transition layer, a Zr / Al gradient transition layer and an AlZrN multi-component hard coating on the surface of the tool substrate. The preparation process is as follows:

[0029] 1) Pretreatment: Grind and polish the surface of the tool base to remove surface oil, rust and other impurities, then put it in alcohol and acetone in turn, ultrasonically clean for 30 minutes each, remove oil and other attachments on the tool surface, and dry it with a hair dryer Quickly put into the coating machine, vacuum to 8.0×10 -3 Pa, heat to 300°C, keep warm for 30-40min;

[0030] 2) Ion cleaning: pass Ar gas, the pressure is 1.5...

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Abstract

The invention belongs to the field of machine manufacturing metal cutting knives, and particularly relates to an AlZrN multi-component hard coating knife and a preparation process thereof. According to the AlZrN multi-component hard coating knife, a knife base is made of high-speed steel, hard alloy, ceramics or cubic boron nitride. The surface of the knife is an AlZrN multi-component hard coating with the nitrogen content gradually changing in a gradient mode. A Zr transition layer and a Zr / Al gradient transition layer are arranged between the knife base and the surface coating sequentially. As the two kinds of metals of Zr, Al and the like are added into the AlZrN multi-component hard coating, and the nitrogen content in the coating structure components gradually changes in the gradient mode, so that the physical and mechanical properties of the coating knife can be improved, the bonding force between coatings is increased by 10%, the strength and toughness of the coating are improved by 15%, the heat stability and impact resistance are improved by 15-20%, the service life of the knife is prolonged by 20% or above, and the cutting performance of the knife is improved by 20% or above.

Description

technical field [0001] The invention belongs to the field of machine-made metal cutting tools, in particular to an AlZrN multi-component composite hard-coated tool and a preparation process thereof. Background technique [0002] Coating the tool is one of the important ways to improve the performance of the tool. Coated tools combine the tool substrate with a hard coating, which greatly improves the performance of the tool. TiN, ZrN, AlN and other nitride single-coated tools have become the most widely used coated tools since they were successfully applied to cutting tools in the 1970s. However, with the development of cutting technology and the promotion of high-speed cutting technology, the relatively weak toughness and wear resistance of binary nitride hard coatings limit its application. The literature (Acta Materials.2011, 59 (1): 68-74) reported the mechanism and performance of TiN hard coating tools during cutting, but this hard coating has been subject to limited u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32C23C14/06C23C14/16C23C14/18C23C14/02
CPCC23C14/0021C23C14/022C23C14/025C23C14/0641C23C14/16C23C14/18C23C14/325
Inventor 宋文龙邓建新李小冬张璇
Owner 常州肯达工具有限公司
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