2015年7月20日星期一

Tungsten Carbide Button Application

Tungsten carbide buttons are widely applied in geological prospecting, coal mining and oil well boring. Because of its wear resistance and hardness (9.8 Moe's scale), tungsten carbide is ideally suited for wear parts, other machine parts and dies which are subject to severe service conditions, such as high temperatures, corrosion and abrasion. In recent years, tungsten carbide has emerged as a superior alternative to steel in many industrial applications.
Most of this tungsten carbide wear parts and the mining tools are made of straight WC-Co hard metals without any addition of other carbides. Fine and ultrafine grained WC hard metals have become more and more important today in the field of wear parts, tools for chipless forming and cutting tools for cast iron, non ferrous alloys and wood.

Tungsten carbide button is widely used as the most popular mining bits tool in modern industries, therefore, they are also named tungsten carbide mining bits, tungsten carbide button bits or just tungsten carbide mining buttons, etc. And as their material is cemented carbide, so cemented carbide buttons are also widely used among the users.

As its unique working performance, tungsten carbide buttons are widely applied to oil filed drilling and snow removal, snow plough machines or equipments.

Cemented carbide buttons are used in the coal cutter drilling tools, mine machinery tools and road maintenance tools for snow clearing and road cleaning. Carbide mining button bits are widely applied for rock tools, mining tools for use in quarrying, mining, tunneling, and civil constructions.

2015年7月6日星期一

Tungsten Carbide Indexable Inserts Type's Meaning

Tungsten carbide indexable inserts have thousands of types, and each type include different meaning, and as usual, if you required indexable inserts, you only should inform us the type code, and our technical department will according to your type to calculate the related price for you.

Now we would like to explain the code's meaning, such as TNMG, the "T" means the shape of the insert is is triangle, "N" means the clearance angle of main cutting edge is "0" degree,. "M" means the allowed tolerances is in middle level, "G" means the chipbreaker and clamping system is with double side.

But if you have any other type's inquiry, welcome to contact us, we will provide the related information for you.

2015年6月23日星期二

Tungsten Carbide Hammer

Tungsten carbide hammer is composite by tungsten carbide and steel, in order to reduce the costs, the working parts is tungsten carbide, and this part is just a little part.
Chinatungsten Online are the professional manufacturer and supplier of tungsten carbide hammers, we are able to provide kinds of tungsten carbide hammers.

Tungsten carbide hammer owns the properties of a narrow range of concentrations of mixtures of carbon and iron that make steel, a number of different metallurgical structures, with very different properties can form. Understanding such properties is essential to making quality steel. At room temperature, the most stable form of pure iron is the body-centered cubic (BCC) structure called ferrite or α-iron. It is a fairly soft metal that can dissolve only a small concentration of carbon, no more than 0.005% at 0 °C (32 °F) and 0.021 wt% at 723 °C (1,333 °F). At 910 °C pure iron transforms into a face-centered cubic (FCC) structure, called austenite or γ-iron. The FCC structure of austenite can dissolve considerably more carbon, as much as 2.1% (38 times that of ferrite) carbon at 1,148 °C (2,098 °F), which reflects the upper carbon content of steel, beyond which is cast iron.

2015年6月15日星期一

What is Tungsten Carbide Inserts

Tungsten carbide inserts is made from tungsten carbide powder and other binders, thanks to high precision and high reliability, tungsten carbide inserts have been widely used worldwide for improving productivity.



Tungsten carbide is more expensive per unit than other typical tool materials, and it is more brittle, making it susceptible to chipping and breaking. To offset these problems, the carbide cutting tip itself is often in the form of a small insert for a larger tipped tool whose shank is made of another material, usually carbon tool steel. This gives the benefit of using carbide at the cutting interface without the high cost and brittleness of making the entire tool out of carbide. Most modern face mills use carbide inserts, as well as many lathe tools and endmills. In recent decades, though, solid-carbide endmills have also become more commonly used, wherever the application's characteristics make the pros outweigh the cons.


Mining and tunneling cutting tools are most often fitted with cemented carbide tips, the so-called "Button Bits". Only man-made diamond can replace the cemented carbide buttons when conditions are ideal, but as rock drilling is a tough job the cemented carbide button bits remain the most used type throughout the world.

2015年6月10日星期三

What is Tungsten Carbide Tips

Tungsten carbide tips is made from tungsten carbide powde and cobalt or other binders, which owns the properties of high hardness, wear and abrasion resistance, cemented carbide is the ideal material for many cutting tools and mechanical parts.

Tungsten carbide tips as the common part of tungsten carbide tips, one tungsten carbide tip can replace 4 to 10 steel tips, its penetration rate twice as high, while the tungsten carbide drill tip replacement less often, improve production efficiency, perforation rate. Tooth tungsten carbide drill for, it is required to adapt to a variety of rock properties teeth, perforation rate, abrasion resistance, shock resistance, so as to achieve long service life. Tungsten carbide drill tip has become a major tool for high-efficiency perforated. Currently tungsten carbide tips for large and medium-sized open-air metal mines, especially for large open pit type non-ferrous metal perforation, tungsten carbide tips has broad prospects.

Tungsten carbide tips take on the important task of engineering geology, oil exploration, mining and civil construction. Tungsten carbide tips as traditional tips, tips by the complex role of impact and abrasion, harsh working conditions, there are at least wear mine rock form more than four, namely: thermal fatigue wear, shock wear the shock of fatigue wear and abrasive wear. tungsten carbide tips compared with the general tips, have higher hardness, strength and toughness. tungsten carbide able to adapt to changing conditions better,and under the guarantee toughness does not fall have further improve the wear resistance of the alloy.

2015年5月4日星期一

Tungsten Carbide Indexable Inserts

Tungsten carbide inserts are replaceable and usually indexable bits of cemented carbide used in machining steels, cast iron, high temperature alloys, and nonferrous materials. Tungsten carbide indexable inserts allow faster machining and leave better finishes on metal parts. Tungsten carbide indexable inserts can withstand higher temperatures than high speed steel tools.

Tungsten carbide indexable inserts are composed of a metal matrix composite where carbide particles act as the aggregate and a metallic binder serves as the matrix. The process of combining the carbide particles with the binder is referred to as sintering. During this process, the binder eventually will be entering the liquid stage and carbide grains remain in the solid stage. The binder is embedding cementing the carbide grains and thereby creates the metal matrix composite with its distinct material properties. The naturally ductile metal binder serves to offset the characteristic brittle behavior of the carbide ceramic, thus raising its toughness and durability. Such parameters of carbide can be changed significantly within the carbide manufacturer's sphere of influence, primarily determined by grain size, cobalt content, dotation, and carbon content.

Our products provide optimum performance for a broad range of operations, including contouring, facing, slotting, and ramping. Inserts feature a unique and highly developed combination of substrate and coating configurations that can handle any workpiece material in any machining environment. Dapra is a leading manufacturer of cutting tools for the automotive, die and mold, machining, medical and aerospace industries.

2015年4月15日星期三

Tungsten Carbide Drawing Dies

Tungsten carbide drawing dies for high-quality carbide core, with high hardness, good thermal conductivity, low coefficient of friction. Carbide drawing dies making simple, corrosion, impact resistance, low price is a significant feature of this product is suitable for ferrous metals, large size wire drawing, and drawing disadvantaged occasions.

Tungsten carbide drawing die die blanks, core processing and loading process mold inserts sets of points should be noted; mainly manufactured in four steps:
1.A blank mold processing
2.Installed inlay interference
3.Drawing die die sets processing
4.Replace the inlay craft.

Tungsten carbide drawing dies cores during sintering shrinkage will produce different batches because ingredients, pressing and sintering processes are different, there are large differences in the amount of shrinkage; die blanks all parts vary the amount of shrinkage, often form a "saddle" or "bell" shape. Dimensions fluctuations die blanks, although in line with standard die blanks, but far more than the mold inserts suit the requirements of interference caused when loading inserts core prestressed bear serious inequality, mold life greatly reduced, and therefore, must die blanks were cylindrical grinding, grinding machine using a special need in the fixtures, diamond grinding wheel.