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High-temperature alloy machining tool and application thereof

A technology for superalloys and machining tools, applied in the field of material processing, can solve the problems of easy chipping and reduce the toughness of the matrix, and achieve excellent metallurgical properties, obvious effects, and the effect of promoting technology.

Inactive Publication Date: 2020-06-16
GANZHOU ACHTECK TOOL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] To sum up, in the prior art, most of the matrix materials used in tools used in the field of high-temperature alloy processing contain elements such as Ti and Ta. These elements increase the hardness of cemented carbide while reducing the toughness of the matrix, resulting in tools Chipping is more likely to occur during machining

Method used

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  • High-temperature alloy machining tool and application thereof

Examples

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Effect test

Embodiment 1

[0046] Example 1 A superalloy cutting tool produced according to an exemplary embodiment of the present invention, the substrate has a composition of 11.5% by weight of Co, 0.85% by weight of Cr, 87% by weight of WC, 0.6% by weight of Rare metal, the balance is other unavoidable impurity components, in this embodiment, the rare metal element is a mixture of La and Tb with a mass percentage of 1:2. Substrates from which cutting tools are subsequently fabricated are produced by conventional grinding of powders, pressing green compacts and sintering. The microstructure of the sintered substrate was studied, and the average intercept length of the tungsten carbide phase was measured to be 0.50 μm. The mechanical / mechanical properties of the substrate were tested, and the following parameters were measured: coercive force 206Oe, bending strength 4582MPa, Fracture toughness 18.6MPam 1 / 2 .

Embodiment 2

[0048] Example 2 A superalloy cutting tool manufactured according to an exemplary embodiment of the present invention has a substrate with a composition of 12.8% by weight of Co, 0.95% by weight of Cr, 1.5% by weight of rare metals, and the balance is WC and other unavoidable impurity components, in this embodiment, the rare metal elements are Re and Dy with a mass percentage of 1:3. Substrates from which cutting tools are subsequently fabricated are produced by conventional grinding of powders, pressing green compacts and sintering. The microstructure of the sintered substrate was studied, and the average intercept length of the tungsten carbide phase was measured to be 0.56 μm. The mechanical / mechanical properties of the substrate were tested, and the following parameters were measured: coercive force 212Oe, bending strength 4986MPa, Fracture toughness 19.1MPam 1 / 2 .

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Abstract

The invention discloses a high-temperature alloy machining tool and application thereof. The tool comprises a substrate, and the substrate comprises the following chemical components of, in percentageby weight, 10 %-13 % of cobalt (Co), 0.4 %-1.3 % of chromium (Cr), 84 %-89 % of tungsten carbide (WC) and 0.2 %-1.5 % of rare metal elements. The high-temperature alloy machining tool has excellent cutting performance, strong high-temperature hardness and long service life; and the actual cutting result shows that the substrate with the above components has better performance than an existing known cutting tool for high-temperature alloy machining, and has better performance in the aspects of semi-finish machining and finish machining after being matched with a coating.

Description

technical field [0001] The invention belongs to the field of material processing, and in particular relates to a high-temperature alloy processing tool and its application. Background technique [0002] At present, superalloys are mainly used in aerospace, ships and other fields; among them, common nickel-based alloy parts include aeroengine turbine discs, blades, etc., and common titanium-based alloy parts include aircraft landing gear pillars made of Ti5553, TiAl6V4 engine mounts and wing structures etc. [0003] Superalloys have the characteristics of large high-temperature chemical activity, low thermal conductivity, low elastic modulus, and high friction coefficient compared with other metals. Based on the above characteristics, the deformation coefficient of chips in the cutting process of superalloys (such as titanium alloys) is small, Large cutting force per unit area, high cutting temperature, chilling, bonding, serious diffusion and other phenomena. Tools used fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08B23C5/00
CPCB23C5/00C22C29/067C22C29/08
Inventor 殷磊周爱国谭卓鹏欧阳水林傅声华薛彦张坤廖星文
Owner GANZHOU ACHTECK TOOL TECH
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