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High-strength, high-anti-friction hard alloy, and manufacture method and application thereof

A cemented carbide, high wear-resistant technology, applied in the field of cemented carbide materials, can solve problems such as easy cracking or cracking, short service life, short service life, etc., to achieve improved alloy performance, improved bending strength, The effect of improving wear resistance

Inactive Publication Date: 2004-11-17
郭庆虎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the three materials, steel is used, which has a short service life; wear-resistant welding is easy to be brittle and not durable; hard alloy is easy to burst or crack, and the service life is not long.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] Take the product YWF23 (brand) of the present invention for making spectacle plates and cutting rings as an example:

[0011] Tungsten carbide with a carbon content of 6.10-6.18% (free carbon 2 ), the semi-finished product after pressing is sent to a vacuum furnace for sintering. The sintering furnace can be a vacuum furnace produced by Zhuzhou Cemented Carbide Factory. During sintering, an emery cloth with 80-180 mesh is used to separate the semi-finished product from the boat. The sintering furnace requires a vacuum degree of about 30μ, air leakage rate: 1 minute <10μ, sintering temperature 1430℃-1460℃, and holding time 0.5-1.5 hours. After sintering, it is cooled out of the furnace to make a finished product.

[0012] Taking the production of conventional general-purpose blades as an example, select FSSS2-4 grain size, total carbon 6.10-6.16%, 90% of the alloy content of tungsten carbide as the hard phase, and the weight of iron and cobalt that account for 10% of the all...

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Abstract

The invention refers to high-intensity high-wearable hard carbide. Adopt tungsten carbide as hard phase and Fe, Co and Ni as felting phase, and additionally add carbide of Ti or V, boride or chloride and tantalum carbide or niobium carbide and also carbon, and after wet grinding, comprssing and vacuum sintering, make the hard carbide.

Description

Technical field: [0001] The invention relates to a new type of material, in particular to a cemented carbide material. Background technique [0002] At present, the heavy labor of transporting sand and gravel cement in international and domestic high-rise buildings is no longer a shoulder crane, but a high-pressure transfer pump is used to transport it to the high-rise work site through pipelines. The operation of the pump truck is an important component-the pump The selection of the alloy materials for the glasses plate and the cutting ring has been a concern of manufacturers since the advent of domestic pump trucks. There are no more than 20 manufacturers of pump trucks, and there are basically three choices of materials: One adopts alloy structural steel, two adopts wear-resistant welding, and three adopts tungsten-cobalt 15, tungsten-cobalt 20 (YG15, YG20) cemented carbide. Among these three materials, steel is used, which has a short service life; the use of wear-resistant w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04C22C29/08
Inventor 郭庆虎
Owner 郭庆虎
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