Rhenium-containing hard alloy and preparation method and application thereof

A cemented carbide, hard phase technology, applied in the field of powder metallurgy, can solve the problems of reduced tool life and oxidation, and achieve the effect of increased tool life and high hardness

Inactive Publication Date: 2020-10-13
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, cemented carbide tools will generate a lot of heat during the cutting process, especially in the case of metal cuttin

Method used

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  • Rhenium-containing hard alloy and preparation method and application thereof
  • Rhenium-containing hard alloy and preparation method and application thereof
  • Rhenium-containing hard alloy and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A rhenium-containing cemented carbide of the present invention is mainly prepared from the following raw materials: WC powder 172.31kg, Co powder 23kg, Re powder 2.30kg, Cr powder 3 C 2 Powder 2.39kg.

[0032] In this embodiment, the purity of Re powder is not lower than 99.90%.

[0033] In this embodiment, the Fsss particle size of the WC powder is 0.78 μm.

[0034] A preparation method of the rhenium-containing cemented carbide of the present embodiment, comprising the following steps: batching, then adding each raw material component in a wet mill, and adding 0.35L alcohol as a ball milling medium per kilogram of the mixture, and mixing the mixture with The weight ratio of the ball-milling rods is 1:5, the ball-milling time is 43 hours, the material is unloaded after the ball-milling, spray-dried and granulated. The granulated mixture was press-molded with 4 kg of PEG4000 forming agent and 1 kg of PEG1500 forming agent. After forming, it was vacuum sintered at 146...

Embodiment 2

[0043] A rhenium-containing cemented carbide of the present invention is mainly prepared from the following raw materials: 168.00 kg of WC powder, 26.00 kg of Co powder, 2.10 kg of TaNbC powder, and 3.90 kg of Re powder.

[0044] In this embodiment, the purity of Re powder is not lower than 99.90%.

[0045] In this embodiment, the Fsss particle size of the WC powder is 1.01 μm.

[0046]A preparation method of the rhenium-containing cemented carbide of this embodiment, comprising the following steps: batching, adding the above raw material components in a wet mill, and adding 0.30L of alcohol per kilogram of the mixture as a ball milling medium, the mixture and The weight ratio of the ball milling rod is 1:5, the ball milling time is 25 hours, unloading after ball milling, spray drying and granulation. The granulated mixture was press-molded using 4 kg of PEG4000 molding agent, and after molding, it was sintered under high pressure at 1410° C. for 30 minutes at a pressure of 6...

Embodiment 3

[0054] A rhenium-containing cemented carbide of the present invention is mainly prepared from the following raw materials: WC powder 185.56kg, Co powder 12.0kg, Cr 3 C 2 Powder 1.24kg, Re powder 1.20kg.

[0055] In this embodiment, the purity of Re powder is not lower than 99.90%.

[0056] In this embodiment, WC powder uses raw materials with a specification of 0.6 μm, and Fsss is 0.6 μm.

[0057] A preparation method of the rhenium-containing cemented carbide of the present embodiment, comprising the following steps: batching, adding the above raw material components into a wet mill, and adding 0.35L of alcohol per kilogram of the mixture as a ball milling medium, and mixing the mixture with The weight ratio of the ball-milling rods is 1:5, the ball-milling time is 45 hours, the material is unloaded after the ball-milling, spray-dried and granulated. The granulated mixture was press-molded using 4 kg of PEG4000 molding agent and 1 kg of PEG1500 molding agent. After molding...

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Abstract

The invention discloses a rhenium-containing hard alloy and a preparation method and application thereof. The rhenium-containing hard alloy is mainly prepared by mixing binder phase powder, Re powderand hard phase powder as raw materials, the mass fraction of the binder phase powder is 3-15%, the mass fraction of the Re powder is 5-30% of the mass fraction of the binder phase powder, the rest isthe hard phase powder, and Re in the rhenium-containing hard alloy is dissolved in the binder phase. The preparation method comprises the steps of proportioning, ball milling, drying granulation, molding and sintering of the raw materials according to a powder metallurgy method to obtain the rhenium-containing hard alloy, and the rhenium-containing hard alloy can be applied to preparation of hardalloy tools, especially milling and turning tools. The rhenium-containing hard alloy has high hardness, strength and fracture toughness, has good high-temperature oxidation resistance, and remarkablyprolongs the service life of a cutter.

Description

technical field [0001] The invention belongs to the field of powder metallurgy, and relates to a cemented carbide tool material and its preparation method and application, in particular to a rhenium-containing cemented carbide and its preparation method and application. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. It has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance. Due to the characteristics of cemented carbide, its products are mainly used to manufacture cutting tools and wear-resistant parts, and are widely used in aerospace, machining, metallurgy, oil drilling, mining tools and other fields. In the machine tool industry, cemented carbide tools Often referred to as "industrial teeth". [0003] In the cutting process, the common failure forms of cemented carbide t...

Claims

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Application Information

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IPC IPC(8): C22C29/08C22C29/02C22C1/05B22F5/00B23B27/00B23C5/00
CPCB22F5/00B22F2005/001B23B27/00B23C5/00C22C1/051C22C29/02C22C29/067C22C29/08
Inventor 罗学全周红翠于涛王社权温光华陈响明
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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