Carbide Insert

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Frequently Asked Questions...

what are the content in the carbide inserts?

Best Answer...


Tungsten carbide, WC or W2C, is a chemical compound containing tungsten and carbon, similar to titanium carbide. Its extreme hardness makes it useful in the manufacture of cutting tools, abrasives and bearings, as a cheaper alternative to diamond. Tungsten carbide is also used in wedding rings.

In a tragic 1945 accident, Harry K. Daghlian, Jr. dropped a brick of tungsten carbide (which is a neutron reflector) onto a plutonium core, causing it to reach critical mass. He died a month later, of radiation exposure.

Uses in machine tools
Carbide cutting surfaces are often useful when machining tough materials, such as carbon steel or stainless steel, as well as in situations where other tools would wear away, such as high-quantity production runs. Sometimes, carbide will leave a better finish on the part, and allow faster machining. Carbide tools can also withstand higher temperatures than standard high speed steel tools.

Machining with carbide can be difficult, as carbide is more brittle than other tool materials, making it susceptible to chipping and breaking. To offset this, many manufacturers sell carbide inserts and matching insert holders. With this setup, the small carbide insert is held in place by a larger tool made of a more rigid material (usually steel). This gives the benefit of using carbide without the high cost of making the entire tool out of carbide. Also, the inserts can be changed without losing much accuracy, allowing the machinist to simply swap out a broken insert without re-zeroing the machine. Most modern face mills use carbide inserts, as well as some lathe tools and endmills.