Lathe machinists use tungsten carbide-coated inserts to turn harder material on a metal lathe. The benefit of using inserts is that you can replace them in the holder when they start to get dull.

Many inserts have eight sides, while some only have four, but you can loosen the retention screw and simply turn the insert to a new edge. Either way, you save money over carbide bit tool blocks, which are difficult to sharpen.

Insert-ready tool blocks come in different configurations and orientations with both positive to negative rakes, which is the angle at which the insert sits. In most cases, the inserts are also coated with various materials to help with durability and longevity, reducing the per part cost in heavy machining on harder material such as stainless steel.


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Every manufacturing sector uses carbide cutting tools due to their density and heat resistance. While steel may be cheaper, no alloy of steel can match the utility of carbide alloys. Tungsten carbide alloy is three times stronger than any steel and titanium carbide is 30 percent more wear resistant. Some carbide cutting tools are hybrid designs with carbide alloy tips on steel shafts.

Machine Shop
Lathes, die stamps, drills and many other machine tools all use carbide bits to shape metal. The carbide alloys are stronger than steel and are able to shed heat at a great rate. This enables faster rates of operation and the ability to work with harder metals. From a business perspective, carbide tools give greater uptime and versatility than normal steel tools.

Mining
Mining machines use cemented carbide button bits. The button bits slot into the head of the boring machine. The individual carbide tips grate against the rock face and shuck off rock chips. Carbide alloys last longer then steel alloys, are more corrosion resistant and withstand greater amounts of heat. Some mining operations involve spraying water to keep down dust and cool off the drill tips. Steel tips rust fast in this environment, so carbide tips are used when possible.

Emergency Services
Fire and rescue serves use carbide cutting tools to help free trapped individuals. Carbide tipped saws and drills are able to cut faster than steel tipped tools. This enables emergency services to rescue people faster and expose the rescue crews to less danger. Carbide alloys are also lighter than steel ones, which helps lessen the load rescue personnel have to carry.

Fine Arts
Carbide cutting tools also have a number of advantages in fine arts. Carbide blades are able to cut with less effort, which means there is less risk of inadvertent cuts. In addition, the greater resistance to heat allows you to use the tool on harder materials such as stone or gems. The strength of the carbide alloys also allow for smaller tools for finely detailed work.


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Since at least World War II, tungsten alloy has proven its worth in ordnance applications. Hyper-velocity armor-penetrating applications use tungsten alloy in spheres, cubes, and projectile shapes.

The normal tungsten alloy rod after swaging, ultimate tensile strength would be increased greatly. The ultimate tensile strength of general tungsten alloy rod is 1050 MPa. However, after swaging, the ultimate tensile strength can reach 1200 MPa min, we could even control at 1400 MPa.


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When mixed with black carbon, tungsten carbide is created.

General Process
The compound is made by heating pulverized tungsten with black carbon, when hydrogen is present. Temperatures range from 2,550 to 2,900 degrees F or 1,400 to 1,600 degrees C. A common method for making the compound was developed in the 1920s in Germany and involves mixing powered tungsten carbide with cobalt. This mixture is then made into the required shape and heated to 2,550 to 2,900 degrees F or 1,400 to 1,600 degrees C. This heat melts the tungsten carbide partially, working as a cement. These tungsten carbide-cobalt creations are known by the names Carboloy and hardmetal.

Another Process
The tungsten and carbon is made into a powder using a pulverizer. The materials are then placed into a crucible and heated using an arc of electricity. The two materials then combine creating the tungsten carbide.


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