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

Preparation method of carbide blade

A technology of cemented carbide blades and alloy powders, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of alloy hardness decrease, damage to the workpiece surface, affecting cutting quality and tool life, etc., to improve wear resistance and The effect of service life

Inactive Publication Date: 2019-01-04
长沙瑞联材料科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during high temperature sintering, WC grains may grow abnormally, affecting the mechanical properties and high temperature resistance of the alloy, especially when the temperature is higher than 600 °C, it is easy to cause a sharp drop in the hardness of the alloy, which limits the application range of the material
For example, during the cutting process, the mechanical friction between the workpiece and the tool may release a large amount of heat energy. If the hardness of the blade decreases, it is easy to damage the surface of the workpiece, affecting the cutting quality and the service life of the tool.

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

Embodiment 1

[0017] A method for preparing a cemented carbide blade, comprising the steps of:

[0018] 1. Weigh WC powder 91.5 parts by weight, Co powder 6 parts by weight, Cu powder 0.6 parts by weight, Fe powder 0.8 parts by weight, Ti powder 0.4 parts by weight, TiB powder 2 0.5 parts by weight of powder, mix well and add to the ball mill, control the ball-to-material ratio to 3:1, add absolute ethanol as the medium according to the liquid-solid ratio of 400ml / kg, then add paraffin wax for wet milling for 40 hours, vacuum dry, pass through 100 mesh Sieve to obtain evenly mixed alloy powder;

[0019] 2. Dewax the alloy powder prepared in step 1 at 350°C for 0.5h in vacuum, then place it in a graphite mold, and sinter it in vacuum at 1200°C for 1h, 1400°C for 0.5h and 1600°C for 0.5h. , During the sintering process, the argon gas is used for protection, the heating method is induction heating, and the sintering is rapidly cooled to obtain a cemented carbide blade.

[0020] The prepared ...

Embodiment 2

[0022] 1. Weigh WC powder 92.2 parts by weight, Co powder 5.5 parts by weight, Cu powder 0.8 parts by weight, Fe powder 0.6 parts by weight, Ti powder 0.5 parts by weight, TiB 2 0.4 parts by weight of powder, mix well and add to the ball mill, control the ball-to-material ratio to 3:1, add absolute ethanol as the medium according to the liquid-solid ratio of 400ml / kg, then add paraffin wax for wet milling for 50h, vacuum dry, pass through 100 mesh Sieve to obtain evenly mixed alloy powder;

[0023] 2. The alloy powder prepared in step 1 was dewaxed in vacuum at 300°C for 1 hour, and then placed in a graphite mold, followed by vacuum sintering at 1000°C for 1.5h, 1400°C for 1h and 1600°C for 0.5h. During the sintering process, the argon gas is used for protection, and the heating method is induction heating. After the sintering is completed, it is cooled rapidly to obtain a hard alloy blade.

[0024] The dry cutting test was carried out by the same method as in Example 1, and ...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a carbide blade. The preparation method comprises the following steps: uniformly mixing 91.5 to 92.5 weight percent of WC powder, 5 to 6 weight percentof Co powder, 0.5 to 0.8 weight percent of Cu powder, 0.5 to 1 weight percent of Fe powder, 0.3 to 0.5 weight percent of Ti powder and 0.3 to 0.5 weight percent of TiB2 powder, adding a mixture into aball mill, taking ethanol as a medium, adding paraffin wax and performing wet milling, then carrying out vacuum drying and passing through a sieve with 100 meshes to obtain uniformly-mixed alloy powder; carrying out deparaffination treatment at the temperature of 300 to 350 DEG C in a vacuum state, then putting a treated substance in a graphite mold, and carrying out vacuum sintering at the temperature of 1000 to 1200 DEG C for 1 to 1.5 hours, the temperature of 1400 DEG C for 0.5 to 1 hour and the temperature of 1600 DEG C for 0.5 hour; introducing argon for protecting in the sintering process; after the sintering is finished, quickly cooling. The dry cutting test shows that the carbide blade prepared by the preparation method disclosed by the invention has excellent wear resistance; service life of the blade is favorably prolonged.

Description

technical field [0001] The invention relates to the technical field of hard alloy materials, in particular to a preparation method of a hard alloy blade with WC as a matrix. Background technique [0002] Cemented carbide usually refers to transition metal carbides such as titanium, hafnium, vanadium, niobium, chromium, and tungsten as the hard phase, and iron group element (iron, cobalt, nickel) powder as the bonding phase and sintered by powder metallurgy technology. The material has the advantages of high modulus, high strength, low thermal expansion coefficient and stable chemical properties. It is widely used in precision manufacturing, abrasive tools and fields that require high corrosion resistance and wear resistance. Among them, WC-Co cemented carbide is widely used in drilling, mining, cutting and other fields requiring high wear resistance due to its advantages of high strength and high hardness. However, during high-temperature sintering, WC grains may grow abnor...

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 Applications(China)
IPC IPC(8): C22C1/10B22F1/00B22F3/10B22F5/00C22C1/05C22C29/02
CPCC22C1/051C22C29/005C22C29/02B22F3/1021B22F5/00B22F2999/00B22F2005/001B22F1/105B22F2201/11B22F2201/20B22F3/10
Inventor 张斌罗伶平
Owner 长沙瑞联材料科技有限公司