Tungsten carbide tools can be operated at cutting speeds many times higher
Rake angles are often provided on cutting tools to cause a wedging action in the formation of chips and to reduce friction and heat.Tool Materials In order to remove chips from a work piece, a cutting tool must be harder than the work piece and must maintain a cutting edge at the temperature produced by the friction of the cutting action.Carbon Steel Carbon steel tools even though comparatively inexpensive tend to Pre-heating Heat Machine Manufacturers lose cutting ability at temperatures around 400 degree F (205 degree C).
High-Speed Steel High-speed steel, containing 18 percent tungsten, 4 percent chromium, 1 percent vanadium, and only 0.5 to 0.8 percent carbon, permits the operation of tools twice or three times the speeds allowable with carbon steelCast Alloys Cast-alloy cutting-tool materials containing cobalt, chromium, and tungsten are effective in cutting cast iron and retaining their cutting ability even when red hot.Cemented Tungsten Carbide The hardness of Tungsten Carbide approaches that of a diamond. Tungsten carbide tools can be operated at cutting speeds many times higher than those used with high-speed steel.Oxides Ceramic, or oxide, tool tips consist primarily of fine aluminum oxide grains, which are bonded together. These are very hard.Cutting fluids An overheated tool can become blunt and soft very fast.
Therefore very often, cooling fluids cools the cutting points of the tool. This serves to lubricate and cool.Water is an excellent cooling medium, but it corrodes ferrous materials. Sulfurized mineral oil is one of the most popular coolants as it can both cool as well as lubricate. The sulfur prevents chips from the work from melting on to the tip of the tool."As Easy As Blockbuster Guarantee"Find the Best Tools for Garden, Garage, Industry and Home. Widest Range of Quality Tools.