In 1923, Schloetter from Germany added 10% to 20% cobalt to tungsten carbide powder as a binder, thereby inventing a new alloy of tungsten carbide and cobalt, its hardness is only less than diamond, which is the world’s first man-made cemented carbide. However, when cutting steel with a tool made of this alloy, the blade will quickly wear out and even crack the cutting edge. In 1929, Schwarzkopf from the United States added a certain amount of tungsten carbide and titanium carbide compound carbide to the original composition, so that the performance of cutting steel has been improved. This is another achievement in the development process of cemented carbide.
Cemented carbide is a kind of material with high hardness, high strength, wear resistance and corrosion resistance, which is widely used in various fields. The following is an introduction to the classification of cemented carbide.
First of all
- according to the composition, cemented carbide can be divided into tungsten-cobalt type, tungsten-titanium-cobalt type and tungsten-titanium-tantalum (niobium) type. Tungsten-cobalt carbide has high hardness and good toughness, and is suitable for processing brittle materials such as cast iron; tungsten-titanium-cobalt carbide has good hardness and wear resistance at high temperatures, and is often used to process steel parts, etc. .
Secondly
- they are classified according to their uses. Common ones include carbide for cutting tools, carbide for mining tools, and carbide for wear-resistant parts. Carbide for cutting tools usually has good cutting performance and wear resistance, which can improve processing efficiency and quality; carbide for mining tools needs to have high strength and wear resistance to meet the needs of mining operations.
In addition
- it can also be classified according to grain size, including ordinary cemented carbide and ultra-fine grained cemented carbide. Ultra-fine grained cemented carbide has more excellent properties, such as higher hardness, better wear resistance and toughness.
- cemented carbide can also be divided into coated cemented carbide and uncoated cemented carbide. Coating cemented carbide through surface coating technology, improve its wear resistance, heat resistance and corrosion resistance.
- Different types of carbide vary in properties and uses. In practical applications, the appropriate carbide type needs to be selected according to specific processing conditions and requirements.
In short
- there are various classification methods of cemented carbide, and each classification method has its own characteristics and scope of application. Understanding the classification of cemented carbide can help us better select and apply this important material.
The above is an article about the classification of cemented carbide. You can modify or adjust it according to actual needs. If you have any further questions or need further assistance, please feel free to let me know.