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Coated cutting tool insert

A technology for cutting tools and blades, which is applied in the field of manufacturing the blades, and can solve problems such as component waste and production stoppage

Active Publication Date: 2010-02-24
SANDVIK INTELLECTUAL PROPERTY AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Incorrect use of used cutting edges, for example during unmanned night shifts, can result in scrapped components or even undesired production stops

Method used

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  • Coated cutting tool insert
  • Coated cutting tool insert
  • Coated cutting tool insert

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0044] Example 1 (the present invention)

[0045] CNMG 120408-PM type cemented carbide cutting insert, wherein the base composition of the insert is 7.5 wt-% Co, 5.3 wt-% cubic carbide (TiC+TaC+NbC) and WC as the balance, and has a thickness A 25 μm-poor cubic carbide surface area was coated by CVD in the following order: 0.7 μm of TiN, 5.0 μm of Ti(C,N), 6.5 μm of periodic (α-Al 2 o 3 +ZrO 2 )*N multilayer, where N=43 periods, each period is 150nm thick, and α-Al 2 o 3 The thickness of the layer is 85nm and the ZrO 2 The thickness of the layer is 65 nm. More specifically, the periodicity (α-Al 2 o 3 +ZrO 2 )*N multilayer process parameters are summarized in the table below:

[0046]

[0047] The process is such that the reactor does not contain AlCl before ZrCl4 enters 3 , and vice versa, and thus in the transition region AlCl 3 and ZrCl 4 There is no overlap, i.e. no mixing of the two chlorides occurs.

[0048] SEM micrographs show that each Al 2 o 3 and Zr...

example 2

[0059] Example 2 (the present invention)

[0060] The sample preparation was the same as in Example 1, but with an additional 0.7 μm TiN top layer. Use Al 2 o 3 Abrasive, coated inserts were post shot peened at 2.2 bar pressure in which the TiN top layer was removed along the edge line and across the rake face to expose blue periodicity (α-Al 2 o 3 +ZrO 2 )*N multiple layers.

example 3

[0061] Example 3 (the present invention)

[0062] The cemented carbide cutting inserts of the same type and composition as the inserts in Example 1 were coated by CVD technology in the following order: coating 0.7 μm of TiN, 5.0 μm of Ti(C, N), 6.0 μm of periodicity (α- Al 2 o 3 +ZrO 2 )*N multilayer, the multilayer has 200 periods, each period is 30nm thick, and α-Al 2 o 3 The thickness of the layer is 20nm and the ZrO 2 The thickness of the layer is 10 nm.

[0063] More specifically, the periodicity (α-Al 2 o 3 +ZrO 2 )*N multilayer process parameters are summarized in the table below:

[0064]

[0065] The process is such that, during conversion, the AlCl 3 into and the ZrCl 4 out, and vice versa, and thus in the transition region AlCl 3 and ZrCl 4 There is some degree of overlap, ie mixing in the reactor.

[0066] SEM micrographs revealed that each Al 2 o 3 and ZrO 2 Layers consist of very fine grains.

[0067] The α-Al was determined by XRD 2 o 3 Has ...

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Abstract

The present invention relates to a metal cutting tool insert with a coating comprising a metal oxide multilayer, which exhibits especially high resistance to plastic deformation as well as excellent resistance to flank and crater wear and high resistance to flaking, particular when used for machining of low carbon steel and stainless steel.

Description

technical field [0001] The present invention relates to an insert of a cutting tool, coated with a metal oxide cladding with improved spalling and plastic deformation resistance, especially suitable for cutting by turning, milling, drilling, and a method of manufacturing the insert Or process steel by similar chip forming machining methods. Background technique [0002] When machining metals using a carbide cutting insert, the insert is worn due to various mechanisms such as abrasive and chemical wear, chipping and fracture of the cutting edge, and the like. Some metals are more difficult to machine than others because, in addition to the wear mechanisms mentioned above, adhesive wear also occurs and leads to flaking of the coating. Examples of these metals are stainless steel and mild steel. Adhesive wear can result when dirt continually adheres to and strips material from the cutting edge during a cutting operation, which shortens tool life. Moreover, when cutting at hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B27/14B32B33/00B32B15/04B32B18/00C23C16/40C23C16/455
CPCC23C16/403C23C16/405C23C30/005Y10T428/265Y10T428/24975B23B27/14C04B41/5027C04B41/87C23C14/08C23C14/081C23C14/083C23C16/40
Inventor 卡尔·比约恩曼德马库斯·罗德马尔
Owner SANDVIK INTELLECTUAL PROPERTY AB