Unlock instant, AI-driven research and patent intelligence for your innovation.

Surface covered tool

A surface coating and tool technology, applied in the field of surface coating tools, can solve the problems of small toughness improvement, limited wear resistance, insufficient toughness, etc., and achieve the effect of improving hardness and oxidation resistance and high adhesion

Active Publication Date: 2014-07-23
KYOCERA CORP
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the coating containing a high-hardness ultrafine particle compound such as the above-mentioned Patent Document 1 has insufficient toughness of the coating, and a coating layer excellent in toughness and fracture resistance is desired.
In addition, Patent Document 1 also describes that making the above-mentioned ultrafine particle compound an amorphous substance with high hardness can suppress the propagation of cracks progressing in the film by virtue of energy dispersion in the film. If it is amorphous, the effect of improving toughness is small, and further improvement in fracture resistance is required
In addition, as can be seen in Patent Document 2, the coating layer composed of vertically elongated crystals also has limitations in improving wear resistance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface covered tool
  • Surface covered tool
  • Surface covered tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] Tungsten carbide (WC) powder with an average crystal width of 0.8 μm is used as the main component, and the following powders are added and mixed in the following proportions: 10% by mass of metallic cobalt (Co) powder with an average crystal width of 1.2 μm, carbonized vanadium with an average crystal width of 1.0 μm (VC) powder 0.1% by mass, chromium carbide (Cr 3 C 2 ) powder 0.3% by mass, formed into the shape of an end mill (model: 6HFSM060-170-06 manufactured by Kyocera) by extrusion, and then performed binder removal treatment at 1450°C for 1 hour in a vacuum of 0.01Pa. Firing to make super hard alloy. In addition, the rake face surface of each sample was ground by shot blasting, brush grinding, or the like. In addition, the produced cemented carbide is subjected to edge processing (honing) by brush grinding.

[0051] Covering layers were formed with various compositions shown in Tables 1 and 2 on the substrates produced in this way by arc ion plating. In add...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a surface-coated tool, such as a cutting tool, in which a surface of a substrate 2 is coated with a coating layer 6. The coating layer 6 comprises a lower layer 8 and an upper layer 9. The lower layer 8 and the upper layer 9 are both composed of columnar particles 10 extending vertically with respect to the surface of the substrate 2. The mean crystal width of the columnar particles 10b constituting the upper layer 9 is smaller than the mean crystal width of the columnar particles constituting the lower layer. Dispersed particles containing tungsten exist in both the lower layer and the upper layer. The distribution density of the dispersed particles existing in the upper layer is smaller than the distribution density of the dispersed particles existing in the lower layer. The surface-coated tool includes the coating layer to improve wear resistance and fracture resistance.

Description

technical field [0001] The present invention relates to a surface-coated tool formed by forming a coating layer on the surface of a substrate. Background technique [0002] Currently, tools such as wear-resistant tools such as cold forging and warm forging tools such as punches and forging machines (headers), sliding members, and cutting tools require wear resistance, slidability, and chipping resistance. The method used in such tools is to form a variety of coating layers on the surface of hard material substrates such as WC-based superhard alloys, TiCN-based cermets, ceramics, diamonds, or cBN, so as to make wear-resistant Improved damage resistance, sliding properties, and chipping resistance. [0003] As such coating layers, TiCN layers and TiAlN layers are generally widely used, and various improvements have been made for the purpose of higher wear resistance and improvement of chipping resistance. [0004] For example, Patent Document 1 describes a cutting tool in wh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23B27/14B23C5/16C23C14/06
CPCC23C14/0641C23C14/505C23C14/325C23C14/3414Y10T407/27Y10T428/252
Inventor 胁真宏
Owner KYOCERA CORP