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Workpiece comprising an alcr-containing hard material layer and production method

A technology for workpieces and tools, applied in metal material coating process, coating, ion implantation plating, etc., can solve problems such as chromium/aluminum distribution fluctuations

Active Publication Date: 2013-03-20
OERLIKON SURFACE SOLUTIONS AG PFAFFIKON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deposition of this layer is done by the hollow cathode process, but because of its intermittent evaporation process, it causes large fluctuations in the chromium / aluminum distribution in the (CrAl)N layer

Method used

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  • Workpiece comprising an alcr-containing hard material layer and production method
  • Workpiece comprising an alcr-containing hard material layer and production method
  • Workpiece comprising an alcr-containing hard material layer and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1: Milling of structural steel

[0062] Tools: end mill, hard metal

[0063] Diameter D=8mm, number of teeth z=3

[0064] Material: Structural steel Ck45, DIN 1.1191

[0065] Milling parameters:

[0066] cutting speed v c =200 / 400m / min

[0067] Feed speed v f =2388 / 4776mm / min

[0068] Radial engagement width a e =0.5mm

[0069] Axial engagement width a p =10mm

[0070] Cooling: Emulsion 5%

[0071] Process: down milling

[0072] Wear criteria: cutting surface wear VB = 0.12mm

[0073]

[0074] Example 1 shows a comparison of the service life of coated HM milling cutters tested at different cutting parameters.

[0075] It is evident that the described AlCrN layer has a longer service life than the layer systems used hitherto industrially, such as TiCN and TiAlN. Furthermore, it can be seen from the results that, as in the case of Example 1 with a high Al content, only the cubic B1 structure is maintained. Then, the durability characteristic was ...

Embodiment 2

[0076] Example 2: Milling of austenitic steel

[0077] Tools: end mill, hard metal

[0078] Diameter D=8mm, number of teeth z=3

[0079] Material: Austenitic steel X6CrNiMoTi 17 12 2, DIN 1.4571

[0080] Milling parameters:

[0081] cutting speed v c =240m / min

[0082] Tooth feed f z =0.08mm

[0083] Radial engagement width a e =0.5mm

[0084] Axial engagement width a p =10mm

[0085] Cooling: Emulsion 5%

[0086] Process: down milling

[0087] Wear criteria: cutting surface wear VB = 0.1mm

[0088]

[0089] Example 2 shows a comparison of the service life of coated HM milling cutters. The AlCrN layer achieves improved wear properties compared to industrially used hard layers. The increase in service life in the case of AlCrN is due on the one hand to the as yet unproven lower propensity for material lubrication of the second alloying element Cr compared to Ti in the TiAlN layer and on the other hand to the The excellent wear resistance and high hardness of t...

Embodiment 3

[0090] Example 3: Milling of hardened steel

[0091] Tool: Spherical milling cutter, hard metal

[0092] Diameter D=10mm, number of teeth z=2

[0093] Material: K340 (62HRC), corresponding to C 1.1%, Si 0.9%, Mn 0.4%, Cr8.3%, Mo 2.1%, V 0.5%

[0094] Milling parameters:

[0095] cutting speed v c =0-120m / min

[0096] Tooth feed f z =0.1mm

[0097] Radial engagement width a e =0.2mm

[0098] Axial engagement width a p =0.2mm

[0099] Cooling: dry

[0100] Process: Climb and up milling, finishing

[0101] Wear criteria: cutting surface wear VB = 0.3mm

[0102]

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Abstract

Disclosed is a workpiece or part comprising a layer system that is provided with at least one layer having the composition (Al<y>Cr<1-y>) X, wherein X = N, C, B, CN, BN, CBN, NO, CO, BO, CNO, BNO, or CBNO while 0.2 = y < 0.7. The composition within the layer is substantially constant or changes in a continuous or staggered manner across the thickness of said layer. Also disclosed is a method for producing such a workpiece or part.

Description

technical field [0001] The technical field that the present invention relates to is a coating containing at least one layer of the following composition as (Al y Cr 1-y ) Artifacts of the layer system of layers of X: [0002] A coating containing at least one layer consisting of (Al y Cr 1-y ) The workpiece of the layer system of the layer of X, wherein X=N, C, B, CN, BN, CBN, NO, CO, BO, CNO, or CBNO, and 0.2≤y<0.7, the layer composition in the layer is determined by The thickness of the layer varies continuously or hierarchically, and in the layer (Al y Cr 1-y ) X is a cubic crystal hook, and the workpiece is one of the following tools: namely, a milling cutter; broaches, reamers, indexable blades suitable for rotary processing and milling; molds or injection molding tools. [0003] In a preferred embodiment, the milling cutter is a hobbing cutter, a ball milling cutter, a face milling cutter or a profile milling cutter. [0004] A coating containing at least one l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/06C23C14/00C23C30/00C23C14/02C23C14/58
Inventor V·德尔夫林格A·赖特C·盖
Owner OERLIKON SURFACE SOLUTIONS AG PFAFFIKON
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