Unlock instant, AI-driven research and patent intelligence for your innovation.

Hard alloy composite material

A technology of cemented carbide and composite materials, applied in the field of cemented carbide, can solve the problems of reducing Co content, drill bit fragmentation, toughness reduction, etc., to achieve the effect of excellent wear resistance

Inactive Publication Date: 2006-06-28
陈兆盈
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cemented carbide mainly contains WC and Co. The usual composition of cemented carbide for mining is 10% Co and 90% WC. If the Co content is reduced, the wear resistance of the alloy will be improved, but the toughness will be reduced and the brittleness will be increased, which will easily break the drill bit. , which is a long-term barrier to the development of cemented 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
  • Hard alloy composite material
  • Hard alloy composite material
  • Hard alloy composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: A tungsten carbide button for a three-cone drill bit used in oil exploration is manufactured by using cemented carbide composite material. The size of the button is as follows image 3 , the spherical surface is the rock-breaking working face, and the cylinder is the connecting part. The cemented carbide particles used are 0.5% Co, 98.5% WC, and 1% TaC. The pressed blank is vacuum sintered at 1650°C and crushed to prepare -60 mesh + 100 mesh particles. The particles are 15% by mass and 85% The cemented carbide mixture with the composition of 10% Co and 90% WC is uniformly mixed to obtain a composite material containing cemented carbide particles. The spherical surface of the pressing direction of the button faces downward, and the pressing unit weight is 39g. According to the calculation of the composite thickness of 3mm, 9g of the compound material is firstly added during pressing, and then 30g of 10% Co and 90% WC mixture are added for pressing. Due to the...

Embodiment 2

[0025] Embodiment 2: This embodiment is the same as Embodiment 1 except that the cemented carbide particle composition is different. The cemented carbide particle composition used in this example is 0.6% Co, 0.4% Cr 3 C 2 , 99% WC, made by hot pressing at 1500°C, the Fischer particle size of the original WC powder is Fsss0.6μm, and the prepared cemented carbide particles are ultra-fine structures close to nanometers, so the composite cemented carbide buttons have higher durability. Abrasive.

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention shows a kind of rigid alloy composite material which includes rigid alloy basal body. Its character is a layer of rigid alloy particles which has high hardness and distributes symmetrically composes on the surface of the rigid alloy basal body. The component percentage in weight of these rigid alloy particles is Co 0-3%, WC 97-100%; the size range of these rigid alloy particles is between -60 meshes and +100 meshes; the Vickers hardness of the particles Hv>2000. The invention equably distributes the rigid alloy particles on the surface of the rigid alloy basal body and combines well. It provides excellent abrasion resistance and contains the excellent toughness of the basal body. So it adapts to produce rigid alloy mine equipments.

Description

technical field [0001] The invention relates to cemented carbide, and further refers to a cemented carbide composite material with high wear resistance and high hardness particle layer on the surface of the substrate. Background technique [0002] Cemented carbide is known for its high wear resistance and high rigidity. This excellent performance makes it widely used in many industrial sectors, especially in mining, geological drilling, oil extraction, hydropower engineering, tunneling and other fields. All kinds of engineering drill bits have become irreplaceable products. Because these fields occupy a very important share in the national economy and have huge potential economic benefits, domestic and foreign countries have been devoting themselves to the development of better mining cemented carbide to manufacture more wear-resistant and more efficient engineering drill bits. Cemented carbide mainly contains WC and Co. The usual composition of cemented carbide for mining ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/06
Inventor 陈兆盈陈蔚
Owner 陈兆盈