2017年12月14日星期四

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 Picture
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.

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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.

Tungsten Carbide Indexable Inserts Picture
Tungsten carbide indexable inserts are 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.

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.

If you have any inquires concerning tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com

2017年12月6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 Dies Picture
Tungsten carbide drawing dies, 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.

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What is Tungsten Carbide Blank

Tungsten carbide blank is a kind of solid tungsten carbide. They are made of grains of tungsten and carbon held together in a matrix of metal such as cobalt or nickel. There are many different grades of tungsten carbide. Refer to our carbide and advanced material section for more articles on carbide.

Tungsten Carbide Blank Picture
Tungsten carbide blank material can be called a powdered metal because tungsten is a metal. It is also classified as a ceramic. Ceramics are often defined as a class of materials that are not anything else. It can actually make the most sense to think of tungsten carbide as a ceramic when you are using it and a powdered metal when you make it.

Tungsten and most metals arrange themselves in a lattice which is like a 3 D version of a chain link fence. Under great heat and pressure the carbon atoms are actually packed inside the tungsten atoms instead of being joined side by side as with ordinary compounds.

Tungsten carbide blanks are very common material on any sort of cutting tool: For example, saw blades, lathe bits, drill bits, router bits and dental drilling tips are generally made of carbide. Carbide is so popular in these sorts of tools because it stays sharper longer than most other materials. Additionally, some ball-point pens use carbide balls because it helps the pen last longer.

With something like a carbide blanks, the main body of the blade is made of steel. The small tips of carbide are brazed on to the body. A good carbide tip might hold an edge ten to twenty times longer than a tool steel tip.

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