Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tungsten carbide strengthened steel and preparation method thereof

A tungsten carbide and strengthening steel technology, applied in metal processing equipment, nanotechnology, coating and other directions, can solve the problems of size, volume fraction shape and distribution that cannot be precisely controlled, affecting the strengthening effect of tungsten carbide, etc., to achieve low cost and product quality. The effect of stable quality and distribution dispersion

Active Publication Date: 2020-08-25
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, tungsten carbide is mainly precipitated in iron and steel materials through the adjustment of the heat treatment process. Except that its size, volume fraction, shape and distribution cannot be precisely controlled, the tungsten in the solid solution of tungsten steel during heat treatment and high temperature use Very prone to harmful Laves phase (Fe 2 Precipitation in the form of W) affects the strengthening effect of tungsten carbide

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tungsten carbide strengthened steel and preparation method thereof
  • Tungsten carbide strengthened steel and preparation method thereof
  • Tungsten carbide strengthened steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of the tungsten carbide strengthened steel of the present invention mainly comprises three steps of coating of tungsten carbide, encapsulation of tungsten carbide and release and dispersion of tungsten carbide:

[0034] (1) Coating of tungsten carbide

[0035] Put the pure iron powder, tungsten carbide and dispersant in the ball mill to mix the materials, so that the surface of the tungsten carbide powder is coated with a layer of metallic iron.

[0036](2) Packaging of tungsten carbide (see Figure 1(a) and Figure 1(b))

[0037] The steel to be strengthened is forged into a round rod electrode 1, and the surface of the round rod electrode 1 is polished; 4N diameters d are drilled on the surface of the round rod electrode 1 0 =1~5mm, depth h 0 = 1 to 2 cm circular packaging holes 2; each group of 4 packaging holes 2 is evenly distributed on the same circumference of the round rod electrode 1, and the round rod electrode 1 is evenly distributed in...

Embodiment 1

[0042] The steel to be strengthened in this embodiment is T91 steel, and the preparation method mainly includes three steps: coating of tungsten carbide, encapsulation of tungsten carbide and release and dispersion of tungsten carbide:

[0043] (1) Coating of tungsten carbide

[0044] Put the pure iron powder, tungsten carbide and dispersant in the ball mill to mix the materials, so that the surface of the tungsten carbide powder is coated with a layer of metallic iron.

[0045] (2) Packaging of tungsten carbide

[0046] Forge T91 steel to be strengthened into a round rod electrode 1 with a diameter of 60mm and a length of 2.5m, and polish the surface of the round rod electrode 1; On the same cross-section of the electrode 1), four circular packaging holes 2 are evenly distributed, and the diameter of the circular packaging hole 2 is d 0 = 2mm, depth h 0 = 1.5cm, the distance between two adjacent rows of packaging holes 2 = 2cm; the coated tungsten carbide powder is divided...

Embodiment 2

[0052] The strength to be strengthened in this embodiment is P92, and the preparation method mainly includes three steps of tungsten carbide coating, tungsten carbide packaging and tungsten carbide release and dispersion:

[0053] (1) Coating of tungsten carbide

[0054] Put the pure iron powder, tungsten carbide and dispersant in the ball mill to mix the materials, so that the surface of the tungsten carbide powder is coated with a layer of metallic iron.

[0055] (2) Packaging of tungsten carbide

[0056] Forge the P92 steel to be strengthened into a round rod electrode 1 with a diameter of 65 mm and a length of 3 m, and polish the surface of the round rod electrode 1; On the same cross-section), four circular packaging holes 2 are evenly distributed, and the diameter of the circular packaging hole 2 is d 0 = 5mm, depth h 0 = 2cm, the distance between two adjacent rows of packaging holes 2 = 5cm; the coated tungsten carbide powder is divided into 60 parts, and each part i...

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
Sizeaaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses tungsten carbide strengthened steel and a preparation method thereof. The method includes the following steps of performing ball-milling and mixing on iron powder, tungsten carbide and a dispersing agent so that an iron layer can wrap the surface of tungsten carbide powder; machining to-be-strengthened steel into a round rod electrode, smoothening the surface of the electrode, evenly forming packaging holes in the electrode, filling each packaging hole with an equal amount of film-wrapped tungsten carbide powder, and then sealing openings of all the packaging holes; andperforming electroslag remelting on the round rod electrode with packaged tungsten carbide to melt the to-be-strengthened steel into liquid drops and release the tungsten carbide to be absorbed by the liquid drops in the electroslag remelting process so that the tungsten carbide and molten steel can be mixed up and solidified in a water-cooled crystallizer and the tungsten carbide can be evenly dispersed in solid steel to obtain the tungsten carbide strengthened steel. Second-phase strengthened tungsten carbide particles are evenly distributed in the steel through smelting, the preparation process is precise and can be controlled, and the size and quantity of the tungsten carbide and the strengthening effect of the tungsten carbide can be ensured.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and in particular relates to a tungsten carbide reinforced steel and a preparation method thereof. Background technique [0002] The second phase strengthening is an important strengthening method of steel materials. When the second phase is uniformly distributed in the matrix phase with fine and dispersed particles, it will produce a significant strengthening effect, which is called second phase strengthening. The main reason for the strengthening of the second phase is the interaction between them and dislocations, which hinders the movement of dislocations and improves the deformation resistance of the alloy. For the movement of dislocations, the second phase contained in the alloy has the following two situations: 1. The strengthening effect of non-deformable particles; 2. The strengthening effect of deformable particles. At the same time, when the second phase particles a...

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): C22C38/12C22C33/04B22F1/02C22B9/18B22F9/04B82Y30/00
CPCC22C38/12C22C33/04B22F9/04C22B9/18B82Y30/00B22F2009/043B22F1/17
Inventor 邱国兴彭宇
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com