Carbide woodcutting tools tipped with carbide have distinct advantages over standard woodworking tools.
Carbide remains sharper longer than plain steel, which makes makes a carbide cutting tool more efficient. Carbide enables blades to cut faster without binding, which reduces load on woodworking machines. Normal-steel cutting tools dull fast. When blades get dull, they burn the wood, cause chipping, shatter the grain and cause grain blow-out. Sharp, carbide-tipped tools are far more efficient, cutting faster and needing sharpening less often than common steel blades.
Cleaner

Carbide woodworking tools make the cleanest, straightest cuts of any of the woodworking tools, and cause little or no grain damage. When cuts are clean and straight, woodworking joints fit better and glue bonds are tighter. A carbide tool's clean cut reduces the incidence of kickback, a major cause of woodworking accidents.


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In recent years, it has been suggested that improved tool life of tungsten carbide tools containing titanium carbide was caused by the formation of titanium oxide layers, and in some cases sulfide layers and other oxides, on the surface of the tool. This belief was based upon the showing by electron microscopy that a protective and adherent layer of Ti2 O3 was present as an intermediate layer between a TiC-TiO solid solution on the surface of the carbide tool after cutting.



It has been more recently shown that by application of cutting fluids, sulfide and oxide layers are formed in the contact zone of a carbide cutting tool and an aluminum-deoxidized steel, in which case the sulfide and oxide layers are less than 10 μm thick. It has been asserted in the prior art that the oxide layer formed on the surface of the tungsten carbide tool raises the welding temperature between the carbide tool and steel by several hundred degrees, thereby decreasing wear by the "adhesion-and-shear" process. In addition, it has also been asserted that TiO is very adherent to the carbide surface of the tool since the sub-surface forms a solid solution of TiO and TiC. Thus, it was believed that the role of the surface layer was that of reducing the frictional coefficients and preventing diffusion and the like between the tool and the workpiece.


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Carbide woodcutting tools’ advantages include tougher and longevity.

Tougher

Some hardwoods contain small particles of silica or minerals that can dull normal steel. Particleboard and other composite wood products may contain sand, small rocks or other kinds of debris in their cores that can damage or even ruin a common steel blade instantly. carbide woodworking tools are tough enough to cut through most debris without causing any damage to the blade or its tip. Bullets, nails and screws are commonly found inside rough, re-purposed lumber. If you hit one of these things with a normal blade, it's finished. A carbide-tipped tool may cut through them and you won't even notice.



Longevity

Carbide tips can be replaced when they wear out or break, and most tool-sharpening shops can weld new tips onto a wood working tool. The initial cost of a carbide-tipped tool is more, but the tips are replaceable, making the tool more affordable in the long run. Carbide-tipped tools last almost indefinitely if the blade body or router-bit shaft remains in good shape. It's not uncommon for carbide-tipped woodworking tools to last 20 years or more if they are taken care of and the tips are replaced regularly.


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Tungsten heavy alloy is ideal for shielding against X-rays and gamma radiation. It reduces the physical size of shielding components without reducing their effectiveness and requires only two-thirds the thickness of lead while delivering the same shielding results.

This is extremely important in linear accelerator medical systems, which utilize
Multi-Leaf Collimators (MLC) to regulate the beam. The sophisticated shielding properties of tungsten heavy alloy for Multi-Leaf Collimators potentially increases the number of leafs in a collimator and enables a greater precision beam that targets only the area of the patient that requires treatment.

The chart below compares the thickness of (tungsten heavy alloy) WHA to tungsten (W), lead (Pb), and molybdenum (Mo), illustrating that thinner leafs can be used to obtain the same shielding properties as thicker leafs, enabling more leafs in the same space which improves beam precision.

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Most components of radiation detector are tungsten alloy sheet based applications with a thickness range of about 0.1mm to 2mm.
Why can use such thickness sheet for radiation detector? Due to the good performance of tungsten alloy materials. The tungsten alloy sheet for radiation detector is higher density compare with other materials like lead ,and molybdenum. It means that, when different material with the same thickness,tungsten alloy sheet will do better in absorption of x-ray and the absorption of x-ray and gamma radiation.

As the reason the great amount substantial reserves of tungsten on the Earth. Tungsten alloys with special economic advantage, geography and performance advantages would be wildly used in in various industries.Future speaking,tungsten alloy sheet for detector should be more environmental friendly than other metal materials.

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Due to tungsten alloy is high density and atomic mass, tungsten alloy exhibits excellent absorption behaviour against electromagnetic radiation such as X-rays and γ-radiation . The absorption of x-ray and gamma radiation is in direct proportion to the density of the shielding material. Tungsten alloy are more than 1.5 times as effective as lead and provide extremely efficient protection, particularly where space is limited.For this reason, tungsten alloy based materials are used for shielding applications in medical imaging diagnostics and therapy. In the case of X-ray diagnostics, typical applications are collimators in the tungsten alloy detector system and shielding parts in computer tomography.

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Since cemented carbide woodworking tools are used for working solid wood, such as logs etc. Its application also includes man-made products based on wood particles, fibres or chips, such as chipboard, particle board and medium and high density fiber boards (MDF/HDF), the different types of corrosion are important:  solid wood contains organic acids and other compounds that degrade the binder in the tool material and cause outbreak of the hard WC-particle from the matrix and thus wear the tool material.

Man-made wood products contain organic binder material, based on compounds such as urea, formaldehyde, wax, glue fillers etc. and possibly laminated with plastic layers, such as melamine. The temperature may get very high (>500°C) when working these wood products and then the content of the product will degrade into corrosive compounds chemically attacking the cemented carbide binder.
Furthermore the high temperature may result in oxidation of the cemented carbide binder, also degrading and wearing the cutting edge.


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Carbide tipped tools are far more durable than solid carbide tools. Under abnormal conditions the carbide may start to crack due to hard spots in the material being machined, incorrect feed rates or inadequate holding of workpiece. These cracks that shatter solid carbide tools are stopped in carbide tipped tools by the tough hardened tool steel body - usually permitting the tool to complete the production run.

The carbide grade in carbide tipped tools can be selected wholly based on its cutting and wear characteristics rather than compromising for the carbide's structural strength, as is required for solid carbide tools. Some high cost specialty carbides necessary for aggressive machining of many tough alloys are not even available in solid carbide round form.

 
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Cemented carbide is one of the most common materials currently being used in the wood industry for woodworking tools. In the quest for extended lifetime of the woodworking tools and for cutting quality it is important to optimise specific properties of the cutting tool material. Two of the most important properties of the woodworking tool are the resistance to corrosion and oxidation and the hardness.



A cutting tool for woodworking applications has a tungsten carbide substrate and a hard layer bonded to the substrate at high temperature and high pressure, i.e. where diamond or cubic boron nitride is thermodynamically stable. The hard layer comprises polycrystalline diamond or polycrystalline cubic boron nitride, and a supporting cobalt phase including adjuvant alloying materials for providing oxidation and corrosion resistance. Typical alloying elements include nickel, aluminum, silicon, titanium, molybdenum and chromium. Such materials also retard transformation of cobalt from the HCP to the FCC crystal structure at high temperature. The hard layer has an as-pressed surface parallel to the substrate and is only about 0.3 millimeters thick. An additional secondary phase including a carbide, nitride and carbonitride of metals such as titanium may also be present in the PCD or PCBN layer.


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Generally the advantages of carbide tipped tools can be concluded as follow,

1.Carbide tipped tools are far more durable than solid carbide tools.

2.Carbide tipped tools retain their cutting edge hardness at high machining temperatures generated by high cutting speeds and feeds that reduce machining cycle time.

3.Carbide tipped tools improve surface finish and hold size far longer for better quality.

4.Carbide tipped tools last far longer because the carbide chip forming surface resists wear as the chip flows over the tools. This greatly reduces need for costly changes with increased scrap and rework.

5.Carbide tipped tools should always be used when machining highly abrasive materials.

Although carbide tipped tools use higher quality more costly carbide, the overall cost is usually substantially less than solid carbide tools because only the thick cutting edge is carbide.

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