Friday, 9 May 2014

Metal cutting tools using tungsten carbide and it applications

In previous blog we see about how we choose metal cutting tools and what the types of tools based on the materials. Now this blog we see about tungsten and carbide tools and its applications. The material carbide gives hardness to the material but in the real life, due to the cost of that material it is used with tungsten but in some cases solid carbide tool is inserted in to the part of the tool. It also gives the effectiveness in the metal cutting.

Tungsten carbide cutting tools contain equal parts of tungsten and carbon atoms. Basic form of the tungsten carbide is fine gray powder, after pressing and forging die, it develops as steel that is used for machineries and metal cutting tools.  These types of tools have high abrasive rate, this nature of tungsten carbide is very helpful for cutting metals. Especially rotary tools are made by solid carbide for giving fast in that tools such as milling tools.

Tungsten and Solid carbide tools:
There are many tools are available using solid carbide and tungsten carbide tools, Tips & Inserts, Rounds, Rod, Plug, Flats, Tip Tool as per IS & special, Carbide End mill, Drill, Slot mill, Reamer, Taps, Tipped index able milling cutters & Face mill cutters,  Rotary Burrres cutters, Boring Tool, Parting Tool.

Carbide Tips and Inserts:
Inserts and tips are the small inserts for 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. Insert tools have ability to cut hard or abrasive materials. To increase the life of carbide inserts, they are sometimes coated. A coating allows the cutting edge of a tool to cleanly pass through the material without having the material gall or stick to it.

Carbide rounds and rods:
Carbide round bars have good abrasive resistance with bending strength, so it is used to make special cutters with various tools.

Carbide plugs and flats:
Plug is used along the die to maintain the Inner bore of the pipe. Plug gages are one such inspection tool that is used for checking and verifying the dimensional accuracy of a hole in a component.

Solid carbide mills and drills:
Carbide mills are used in various milling application in different industries such as general machining, mold and die, power generation and aerospace. Solid carbide drills are used to giving dimensional accuracy and improved finishing surface.

Solid carbide reamers and taps
Solid carbide taps are used to cut alloys and it gives higher removal rate so it gives smoother finishing operations. In this reamer is used to rotator type cutting, mostly the reamers are used to putting the hole.

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