Cemented carbide is a powder metallurgy product made of carbide (WC, TiC) micron-level powder of high hardness refractory metals as the main component, with cobalt (Co) or nickel (Ni), molybdenum (Mo) as the binder, interested in a vacuum furnace or hydrogen reduction furnace.
Classification and Grades
①Tungsten and Cobalt Cemented Carbide
The main component is tungsten carbide (WC) and binder cobalt (Co).
The grade is composed of “YG” (“hard, cobalt” in Hanyu Pinyin) and the percentage of average cobalt content.
For example, YG8, means the average WCo = 8%, and the rest is tungsten carbide carbide.
②Tungsten, titanium and cobalt cemented carbide
The main components are tungsten carbide, titanium carbide (TiC) and cobalt.
The grade is composed of “YT” (“hard, titanium” in Hanyu Pinyin) and the average content of titanium carbide.
For example, YT15, means the average WTi = 15%, the rest is tungsten carbide and cobalt content of tungsten titanium cobalt carbide.
③Tungsten-titanium-tantalum (niobium) type carbide
The main components are tungsten carbide, titanium carbide, tantalum carbide (or niobium carbide) and cobalt. This kind of carbide is also called general-purpose carbide or universal carbide.
Main producing countries
There are more than 50 countries in the world producing cemented carbide, and the total output can reach 27,000-28,000t-, the main producing countries are USA, Russia, Sweden, China, Germany, Japan, UK, France, etc. The world cemented carbide market is basically in the saturation state, and the market competition is very fierce. China’s cemented carbide industry was formed in the late 1950s, and it developed rapidly from the 1960s to the 1970s. In the early 1990s, China’s total production capacity of cemented carbide reached 6000t, and the total output of cemented carbide reached 5000t, ranking 3rd in the world after Russia and the United States.
Carbide rods are carbide cutting tools, which are suitable for different rough grinding parameters, cutting materials as well as non-metallic materials. It is used in conventional automatic and semi-automatic lathes, etc.
First of all, carbide bar has a wide range of applications in the field of machining. It can be used to make high-speed turning tools, milling tools, cobalt heads, reaming tools and other drawing tools, which can improve the cutting speed
It can improve the cutting speed and efficiency, reduce the processing cost, and also ensure the accuracy and surface quality of the machined parts.
Secondly, in the field of material processing, cemented carbide rods also have important applications.
It can make oil drill bits, rock drill bits, cutting bits and other dies, which can maintain stable performance under the harsh environment of high strength, high hardness and high pressure, effectively improving the processing efficiency and quality.
In addition, cemented carbide rods also play an important role in the field of mining. It can be used to make mining drilling tools, coal drilling tools, geological drilling tools and other tools, which can carry out various types of drilling, drilling, fault detection and other work in the complex and multi-intersection mining environment, ensuring the safety and accurate detection of the mining area.
In general, carbide rods with high wear resistance, high strength and high temperature performance are widely used in machining, material processing, mining and other fields, which can improve the durability and efficiency of tools, and thus achieve industrial efficiency, energy saving and environmental protection development.
Features:
Mainly used in PCB drill bits, various types of end mills, reamers, reaming drills, etc.;
- The use of ultra-fine specification sub-micron, the perfect combination of superb wear resistance and impact toughness;
- Resistance to deformation and deviation;
- China tungsten Online has advanced production technology of tungsten alloy round bar;
How to “transform” a carbide round bar into a carbide tool? With the continuous improvement of industrial level, the quality requirements of carbide round bar are also increasing. In the high-precision machining industry, the run out of carbide tools has a fatal impact on the accuracy of products, and the level of tool run out index is mainly limited by the cylindrical index of carbide bars. In the production process of carbide bar, the cylindrical of the interested bar blank is affected by the material and powder metallurgy process, thus the cylindrical control of carbide fine grinding bar is mainly on the subsequent processing and special treatment. In general, the main processing method of carbide bars is center-less grinding. The center-less grinding process is composed of three parts: grinding wheel, adjusting wheel and work piece holder, where the grinding wheel actually serves as the grinding work, the adjusting wheel controls the rotation of the work piece and causes the work piece to occur at the feed rate, and as for the work piece holder, which supports the work piece during grinding, these three parts can have several ways of cooperation (except for stop grinding), all of which are the same in principle.
Cylindrical is a comprehensive index to measure the roundness and straightness of the bar. The cylindrical of the carbide bar is mainly affected by the center height of the processed work piece, the amount of tool feed, the feed speed, and the rotation speed of the guide wheel in the center-less grinding process. So grasp the cylindrical index to make the carbide bar successfully “transformed” into a high quality carbide tool.
Post time: Jun-25-2023