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A kind of preparation method of tungsten-nickel alloy material

A technology of tungsten-nickel alloy and nickel powder, which is applied in the field of preparation of tungsten-nickel alloy materials and can solve problems such as "nickel pool" and holes

Inactive Publication Date: 2018-01-30
温州弘恒电子科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing a tungsten-nickel alloy material. The tungsten-nickel alloy material prepared by the method solves the problems of "nickel pool" and holes that often appear in the traditional fine-grained hard alloy preparation process, so as to improve the comprehensive performance of the alloy. The purpose of significantly improving and controlling the structure of the material can be achieved, so that the strength and hardness of the prepared tungsten-nickel alloy material can be perfectly matched, and the comprehensive performance is excellent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Prepare mixed powder according to the following weight components:

[0023] Tungsten carbide, 90.1%, Fischer particle size 0.8-1μm;

[0024] Nickel powder, 5%, Fischer particle size 0.5-1.0μm;

[0025] Chromium carbide, balance.

[0026] The mixed powder with the above ratio is wet-milled; the ball milling time is controlled in sections; firstly, the carbide powder and the additive chromium carbide are added to the ball mill barrel for wet milling for 12 hours, and then nickel powder is added for wet milling for 14 hours.

[0027] The ball milled mixture slurry was dried.

[0028] The dry mix is ​​pressed into compacts of the desired shape.

[0029] The pressed product is sintered at high temperature in a sintering furnace, the sintering temperature is 1450°C, the holding time is 70-90min, and the sintering pressure is 4.5Mpa to obtain a tungsten-nickel alloy matrix.

[0030] Prepare cladding metal powder according to the following weight percentage: Zr 10%, Ni 2%, ...

Embodiment 2

[0036] Prepare mixed powder according to the following weight components:

[0037] Tungsten carbide, 92.8%, Fischer particle size 0.8-1μm;

[0038] Nickel powder, 6%, Fischer particle size 0.5-1.0μm;

[0039] Chromium carbide, balance.

[0040] The mixed powder with the above ratio is wet-milled; the ball milling time is controlled in sections; firstly, the carbide powder and the additive chromium carbide are added to the ball mill barrel for wet milling for 16 hours, and then nickel powder is added for wet milling for 18 hours.

[0041] The ball milled mixture slurry was dried.

[0042] The dry mix is ​​pressed into compacts of the desired shape.

[0043] The pressed product was sintered at high temperature in a sintering furnace, the sintering temperature was 1470°C, the holding time was 90min, and the sintering pressure was 5.0Mpa to obtain a tungsten-nickel alloy matrix.

[0044] Prepare cladding metal powder according to the following weight percentage: Zr 15%, Ni 8%,...

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Abstract

The invention discloses a preparation method for a tungsten-nickel alloy material. The method comprises the following steps of burdening, ball-milling, drying, compression molding and sintering, and a continuous fiber laser is used for fusion covering and remelting. According to the tungsten alloy material prepared through the method, the aim of remarkably improving and controlling the structure of the material can be achieved, the strength and hardness of the prepared tungsten-nickel alloy material can be perfectly matched, and the comprehensive performance is excellent.

Description

technical field [0001] The invention relates to the field of alloy material manufacturing, in particular to a preparation method of a tungsten-nickel alloy material. Background technique [0002] Cemented carbide has the characteristics of high strength, high hardness, excellent wear resistance, heat resistance and good corrosion resistance, so it is widely used in high pressure, high speed, high temperature, corrosive media and other working environments [0003] WC-Ni cemented carbide has the characteristics of high strength, high hardness, excellent wear resistance, heat resistance and good corrosion resistance, so it is widely used in high pressure, high speed, high temperature, corrosive medium and other working environments. Since Ni belongs to the face-centered cubic (F.c.c) crystal system, it has good plasticity and is prone to plastic deformation during wet grinding to form flaky Ni powder clusters. The industrial production of cemented carbide with Ni as a binder ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/05C22C27/04C23C24/10
CPCC22C1/051C22C27/04C22C29/005C22C29/08C23C24/103
Inventor 不公告发明人
Owner 温州弘恒电子科技有限公司
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