Preparation method of high density tungsten-base alloy

A tungsten-based alloy and density technology, which is applied in the field of preparation of high-density tungsten-based alloys, can solve the problems of preparation, difficulty, and parts that cannot be processed, and achieve the effects of improving the degree of mixing, increasing the size, and prolonging the life

Active Publication Date: 2019-12-13
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increasing use of tungsten alloys, there are more and more tungsten alloy parts with complex structures. At the same time, higher

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] This embodiment includes the following steps:

[0034] Step 1. Ni and Fe in the design composition of the target product 90W7Ni3Fe alloy are prepared by atomization method into Ni-30Fe alloy spherical powder with a particle size of less than 50μm;

[0035] Step 2. Weigh 900g of spherical tungsten powder with a particle size of less than 50μm and 100g of Ni-30Fe alloy spherical powder with a particle size of less than 50μm prepared in step 1, according to the design composition of the target product 90W7Ni3Fe alloy, and place them in the stainless steel cylinder of the roller ball mill mixer , Then add anhydrous ethanol and stainless steel balls, and then seal the stainless steel cylinder around its axis in the horizontal direction to roll and mix the powder for 8 hours to obtain the mixture; the diameter of the stainless steel ball is 5mm, and the quality of the stainless steel ball is the same as the tungsten powder and Ni The ratio of the total mass of th...

Example Embodiment

[0042] Example 2

[0043] This embodiment includes the following steps:

[0044] Step 1. Ni and Cr in the design composition of the target product 95W3Ni2Cr alloy are prepared by the atomization method into Ni-40Cr alloy spherical powder with a particle size of less than 50μm;

[0045] Step 2. Weigh 950g spherical tungsten powder with a particle size of less than 50μm and 100g of Ni-40Cr alloy spherical powder with a particle size of less than 50μm prepared in step one according to the design composition of the target product 95W3Ni2Cr alloy, and place them in the stainless steel cylinder of the roller ball mill mixer , Then add anhydrous ethanol and stainless steel balls, and then seal the stainless steel cylinder around its axis in the horizontal direction to roll and mix the powder for 10 hours to obtain the mixture; the diameter of the stainless steel ball is 10mm, and the quality of the stainless steel ball is the same as the tungsten powder and Ni The ratio of the total mass o...

Example Embodiment

[0052] Example 3

[0053] This embodiment includes the following steps:

[0054] Step 1: Ni and Co in the design composition of the target product 95W3Ni2Co alloy are prepared by atomization method into Ni-40Co alloy spherical powder with a particle size of less than 50μm;

[0055] Step 2: Weigh 950g spherical tungsten powder with a particle size of less than 50μm and 100g of Ni-40Co alloy spherical powder with a particle size of less than 50μm prepared in step 1, according to the design composition of the target product 95W3Ni2Co alloy, and place them in the stainless steel cylinder of the roller ball mill mixer , Then add anhydrous ethanol and stainless steel balls, and then seal the stainless steel cylinder around its axis in the horizontal direction to roll and mix the powder for 9 hours to obtain the mixture; the diameter of the stainless steel ball is 8mm, and the quality of the stainless steel ball is the same as the tungsten powder and Ni The ratio of the total mass of the -...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a high density tungsten-base alloy. The preparation method comprises the following steps: I, preparing non-main body alloy powder from elements, excepttungsten, in a tungsten-base alloy; II, rolling and mixing tungsten powder with the non-main body alloy powder to obtain a mixture; III, drying the mixture to obtain mixed powder; IV, drawing a three-dimensional model of the tungsten-base alloy and layering the model to obtain cut-layer data and cut-layer scanning data; V, preheating a formed bottom plate; VI, carrying out pre-sintering and fusionscanning successively after paving the powder to form a single-layered solid sheet; and VIII, carrying out formed bottom preheating, powder paving, pre-sintering and fusion scanning processes repeatedly to obtain the tungsten-base alloy. According to the preparation method, low-melting-point elements in the tungsten-base alloy are prepared into non-main body alloy powder which is rolled and mixedwith the tungsten powder first, so that a powder gathering phenomenon is reduced. Then low speed fusion scanning after pre-sintering is carried out, so that element powder except tungsten is adheredto each other, and therefore, movement caused by electron beam impact is avoided and the uniformity and density of the tungsten-base alloy are improved.

Description

technical field [0001] The invention belongs to the technical field of alloy preparation, and in particular relates to a preparation method of a high-density tungsten-based alloy. Background technique [0002] As a two-phase alloy, tungsten-based alloy has a series of excellent physical and mechanical properties such as high density, high strength and hardness, good electrical and thermal conductivity, high thermal expansion coefficient, good corrosion resistance and oxidation resistance, etc. It has been widely used in industries, such as gyro rotors and inertial rotating elements in the aerospace industry; used as armor-piercing projectiles and missile warheads in the military industry; used as shielding materials in the medical and health sector, etc. After years of development, tungsten-based alloys have developed into several series, such as W-Ni-Fe, W-Ni-Cr and W-Ni-Co. Traditional tungsten-based alloys are mostly prepared by powder metallurgy method, which is more su...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C27/04C22C1/04B22F3/105B33Y10/00B33Y70/00
CPCC22C27/04C22C1/045B33Y10/00B33Y70/00B22F10/00B22F10/34B22F10/28B22F10/366B22F12/13Y02P10/25
Inventor 杨广宇刘楠杨坤贾亮贾文鹏汤慧萍王建
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap