ZrNbCN gradient composite coated tool and preparation technology thereof

A composite coating and cutting tool technology, applied in the field of ZrNbCN gradient composite coating cutting tools and its preparation, to achieve high hardness and toughness, improve oxidation resistance, reduce friction and bonding effects

Inactive Publication Date: 2017-11-28
JINING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the performance and preparation methods of the existing carbonitride coating tools, a

Method used

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  • ZrNbCN gradient composite coated tool and preparation technology thereof

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Effect test

Embodiment 1

[0022] The ZrNbCN gradient composite coating tool and the preparation method thereof of the present invention, the tool is a common machine tool blade, its base material is: cemented carbide YG3X, the deposition method adopts the composite coating method of unbalanced magnetron sputtering and arc plating, Two unbalanced magnetron sputtering ZrNbC composite targets and two arc plating Ti targets were used for deposition. First, the Ti transition layer is deposited by arc plating, and then the ZrNbC transition layer and the ZrNbCN gradient composite coating with a gradient nitrogen content are deposited by the unbalanced magnetron sputtering method. The specific steps are as follows:

[0023] (1) Pretreatment: Polish the surface of the tool base to remove impurities such as oil stains and rust on the surface, then place them in alcohol and acetone in turn, and ultrasonically clean them for 20 minutes each to remove oil stains and other attachments on the tool surface, and dry the...

Embodiment 2

[0030] The ZrNbCN gradient composite coating tool and its preparation method of the present invention, the tool is an ordinary twist drill bit, its tool base material is: M2 high speed steel, the deposition method adopts the composite coating method of unbalanced magnetron sputtering and arc plating, used during deposition 2 unbalanced magnetron sputtering ZrNbC composite targets, 2 arc plating Ti targets. First, the Ti transition layer is deposited by arc plating, and then the ZrNbC transition layer and the ZrNbCN gradient composite coating with a gradient nitrogen content are deposited by the unbalanced magnetron sputtering method. The specific steps are as follows:

[0031] (1) Pre-treatment: Polish the surface of the tool base to remove surface oil, rust and other impurities, then place them in alcohol and acetone in turn, ultrasonically clean them for 20 minutes each, remove oil and other attachments on the tool surface, and dry them with a hair dryer quickly Put into the...

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Abstract

The invention belongs to the field of machine manufacturing tools and particularly relates to a ZrNbCN gradient composite coated tool and a preparation technology thereof. The coated tool comprises a tool base, a Ti transition layer, a ZrNbC transition layer and a ZrNbCN gradient composite coating with gradually changed N content sequentially from inside to outside and is prepared with an unbalanced magnetron sputtering and arc plating composite coating method. According to the ultrahard ZrNbCN compound coating, Zr and Nb are added to the coating and the N content of structural constitution of the coating is changed gradually, so that the combination usability of the tool can be improved. The coated tool has quite high hardness, strength, compression resistance, impact toughness, wear resistance and corrosion resistance. Friction and adhesion between the tool and a workpiece in a cutting process can be reduced, built-up edges are not produced easily, good surface roughness is obtained, the cutting force and the cutting temperature can be reduced by 35% or more, the oxidation resistance of the coated tool is improved by 60% or higher, the service life of the tool is prolonged by 50% or more and the durability of the tool is improved by 50% or higher.

Description

technical field [0001] The invention belongs to the field of mechanically manufacturing metal cutting tools, in particular to a ZrNbCN gradient composite coating tool and a preparation method thereof. Background technique [0002] Cutting tool materials not only need to have high hardness and wear resistance, but also need to have good bending strength and impact toughness. The hard film on the surface of the tool has the following requirements for the material: ① High hardness and good wear resistance; ② Stable chemical properties, no chemical reaction with the workpiece material; ③ Heat resistance and oxidation resistance, low friction coefficient, and firm adhesion to the substrate. With the development of high-speed cutting, the cutting heat generated in the cutting process has much higher wear and tear on the tool than conventional cutting, so the hardness, strength, wear resistance, toughness and impact resistance of the tool material, as well as high red hardness and ...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/32C23C14/02C23C14/06C23C28/00
CPCC23C14/352C23C14/0084C23C14/022C23C14/025C23C14/0635C23C14/0664C23C14/325C23C28/347C23C28/36
Inventor 宋文龙崔祥府王首军张璇
Owner JINING UNIV
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