Tungsten carbide milling cutter’s angle of enter could be determined by the position of  centerline relative to the workpiece’s edge. The angle of entry is either negative or positive, when taking the  tungsten carbide milling cutter diameter and the radial width of cut.

When the cutter’s centerline is located on the workpiece, it indicates the angle of entry is negative. This kind of angle is suggested as the the insert contacts the workpiece, instead by its poor cutting edge, but by its strong front rake. For a negative angle of entry producing, the radial width of cut is recommended to exceed the cutter radius. On the contrast, a positive angle of entry would occur if the cutter’s centerline is not located on the workpiece. It happens when the radial width of cut is less than the cutter radius. A positive angle of entry should be avoided because the insert contacts the workpiece by its weakest part—the cutting edge.


Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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Tungsten carbide hob is a cutting tool with a series helical carbide teeth used for hobbing during the gear cutting, splines or sprockets cutting processes.

The cross-sectional shape of the hob teeth are used with the finished products, which has the same shape as teeth of a rack gear. Some light changes are made, with the consideration of the shape for generating purposes, such as extending the hob's tooth length to create a clearance in the gear's roots.Each hob tooth is relieved on the back side to reduce friction.



Compared to the popular single-thread hobs, but double and triple-thread hobs present ability in increasing production rates. The shortcoming is, when taking accuracy into account , they are poorer than single-thread hobs.Depending on type of gear teeth to be cut, there are custom made hobs and general purpose hobs. Custom made hobs are different from other hobs as they are suited to make gears with modified tooth profile. The tooth profile is modified to add strength and reduce size and gear noise.


Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
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Tungsten steel bracelet is made of tungsten, nickel, cobalt and other materials by powder metallurgy production process, the surface finish is made simultaneously grinding and other post-processing was obtained. Tungsten / carbide bracelets with high brightness, corrosion resistance, wear and hypoallergenic characteristics, during wear allergy rarely occurs.

Tungsten Bracelet usually have to pay attention to maintenance, you can use warm water and soap mix everyday common items, hand soap and detergent and other cleaning, we need to avoid the use of ammonia, bleach, chlorine and jewelry cleaning solution.

Cotton on the outside of tungsten steel / bracelet wipe, or other shapes in the groove cleaning with a cotton swab or toothbrush, the ring can also be directly immersed in the cleaning solution.

Remember to avoid the diamond jewelry together because of higher hardness than diamond tungsten steel, tungsten steel bracelet placed together words may scratch the surface of the bracelet.

Gas-phase method is the direct use of gas or gas by various means into the material, so that the gas generating physical change or chemical change in the conditions of action, the final form of nanoparticles after cooling. Its main process by sublimation, evaporation, decomposition, and make it a saturated steam, control crystallization process of amorphous thin films by appropriate conditions to obtain nano powder. The main method of gas-phase has chemical vapor deposition and physical vapor deposition. Chemical vapor deposition is mainly by the gas through the polycrystalline material into a single crystal, such as chemical transport fat, gas decomposition, and synthesis gas MOCVD method. The physical vapor through the vapor phase method is converted into a single crystal of polycrystalline material, such as sublimation - condensation method, molecular beam epitaxy and cathode sputtering. Fumed can be prepared from the liquid phase method is difficult to obtain the metal carbides, nitrides, borides and other non-oxide ultrafine. At the same time, compared to other methods, nano tungsten trioxide fumed output surface cleaner, clean and easy to control the particle size, the dispersibility of the particles is also good.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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