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Multilayer thin film for cutting tool and cutting tool comprising same

一种多层薄膜、切削工具的技术，应用在切削工具用多层薄膜领域，能够解决难以同时利用、多层膜耐磨性限制等问题，达到少品质变动、改进耐磨性的效果

Active Publication Date: 2015-08-26
KORLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, it is difficult to simultaneously utilize the aforementioned multiple strengthening mechanisms, so there is a limit to improving the wear resistance of the multilayer film.

Method used

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  • Multilayer thin film for cutting tool and cutting tool comprising same
  • Multilayer thin film for cutting tool and cutting tool comprising same
  • Multilayer thin film for cutting tool and cutting tool comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In Example 1 of the present disclosure, the case of a TiAlN-based multilayer thin film formed by the method of the present disclosure was compared with the case of a TiAlN-based multilayer thin film formed by a conventional method.

[0041] The stacked structure and composition of the multilayer film were set as shown in Table 2 below. A film formed of four unit film layers was stacked a total of 180 times so that the average lattice period was 5 to 10 nm and the elastic period was 10 to 20 nm, resulting in a multilayer film with a final film thickness of 2.6 to 3.2 μm. In this case, A30 (type SPKN1504EDSR, which is a P30 material available from Korloy) was used as the substrate for depositing the multilayer thin films.

[0042] Table 2

[0043]

[0044] In Table 2, the units of the lattice parameters are The unit of elastic modulus is GPa.

[0045] In the evaluation of the cutting performance of the above deposited multilayer film, SKD11 (width: 100mm, length: 3...

Embodiment 2

[0048] In Example 2 of the present disclosure, the case of an AlCr-based multilayer thin film formed by the method of the present disclosure was compared with the case of an AlCr-based multilayer thin film formed by a conventional method.

[0049] The stacked structure and composition of the multilayer film were set as shown in Table 3 below. A film formed of four unit film layers was stacked a total of 180 times so that the average lattice period was 5 to 10 nm and the elastic period was 10 to 20 nm, resulting in a multilayer film with a final film thickness of 2.3 to 2.6 μm. In this case, K44UF material (type BE2060) available from KFC Co. was used as a substrate for depositing the multilayer thin film.

[0050] table 3

[0051]

[0052] In Table 3, the units of the lattice parameters are , the unit of elastic modulus is GPa.

[0053] In the evaluation of the cutting performance of the above deposited multilayer film, using SM45C (width: 90mm, length: 300mm) as the wo...

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Abstract

The present invention relates to a multilayer thin film for a cutting tool, in which fine thin films having a thickness of a few nanometers to tens of nanometers are alternately stacked, thereby providing the multilayer thin film that has low quality variation and superior abrasion resistance. In the multilayer thin film according to the present invention, unit thin films comprising thin film A, thin film B, thin film C, and thin film D are stacked at least twice, wherein an elasticity coefficient (k) between the thin films is kA>kB,kD>kC or kC>kB,kD>kA, and a lattice constant (L) between the thin films is LA,LC>LB,Ld or LB,Ld>LA,LC, and wherein the difference in the maximum value and the minimum value of the lattice constant (L) is within 20%.

Description

technical field [0001] The present invention relates to a multilayer film for cutting tools, more specifically, to a multilayer film for cutting tools in which superlattice films with a thickness of several nanometers to tens of nanometers are stacked in the form of A-B-C-D or A-B-C-B. The film has less variation in quality and can achieve excellent abrasion resistance. Background technique [0002] Since the late 1980s, various TiN-based multilayer film systems have been proposed in order to develop high-hardness cutting tool materials. [0003] As an example, a multilayer film formed by repeatedly stacking TiN or VN to a thickness of several nanometers forms a so-called superlattice. Although the individual layers have different lattice parameters, the above superlattice has a single lattice parameters, and each layer has a coherent interface; and this coating can achieve a high hardness more than twice the conventional hardness of each single layer, so in order to apply ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/46C23C14/06
CPCC23C28/044C23C28/042C23C14/0641C23C28/44C23C14/46Y10T428/24942Y10T428/24975C23C14/06B23B27/14C23C14/24C23C30/00C30B29/38C30B25/105C30B29/68
Inventor 安承洙朴帝勋康在勋李成九安鲜蓉
Owner KORLOY