Diamond Drill Bit

The material used for Construction of Drill Bits a primer.

The drill bits for use any drilling need to be hard enough to withstand the enormous of heat generated while drilling and the type of construction material used depends on the kind of material being drilled
into.

The most common material used for making the drill bits is steel. The type of steel used in the construction can vary based again on the usage of the drill bit. Soft low carbon steels are used as a material when we need to drill hole into wood. This is the most common type of drill
material and less expensive. The other steels used are the high carbon steels and high speed steels. The major benefit over other type of steels is that these can withstand heat better. The other common type is cobalt steel since it can retain it’s hardness at high temperature.

The next material which is being used nowadays is the tungsten carbide steel. This material is very hard and can be used in almost all the situations but since it is costly, pieces of  it are wither either
screwed or brazed on the drill bit. The other material used is PCD or poly crystalline diamond which is very very hard and can be used for almost any type of drilling work.

The next thing is that is done for the drill bits is coatings. The coatings again are done based on the use of the material being drilled. For the diamond drill bit the diamond powder is used as an abrasive for cutting stone, tile and other materials. The diamond coated bits generate large amount of heat and have to be cooled during their use.