However, they are not suitable for drilling aluminum.īlack oxide is an inexpensive coating applied on high-speed steel. As a result, they are majorly applicable in drilling through hard materials.ĭrill bits coated with titanium aluminum have high stability and suitability for drilling stainless steel, steel, and other materials at high temperatures. Consequently, they are slippery with a characteristic blue or purple color. These drill bits are similar to the titanium nitride drill bits. However, the only disadvantage is that it is not restorable when they lose its cutting edge unless the coating is reapplied. Due to their properties, they have wide industrial applications. Below are the types of drill bits that fall under this category.ĭrill bits coated with titanium nitride are hard, fast, have a longer lifespan, and are suitable for drilling hard and soft metal.

Category #1: Types of Coating Drill BitsĬoatings are materials applied on a part to give it better functional or aesthetic value and are one of the main categories of drilling bits. Below is an introduction to the different drill bits that make up each category. Neck: The neck connects the shank and the body.ĭifferent types of drill bits are used in part manufacturing and are classified into two main categories: coating and workpiece materials.Web: The part separating the two flutes.It functions by reducing the friction between the drill and the hole. Body Clearance: This is part of the body with a lesser diameter than the drill bit.Land: It is also called the margin, this is part of the body with the flutes.They have a cutting edge, turns chip into curls for easy removal, and allows the introduction of coolants. Flutes: Flutes are spiral, helical, or straight grooves made on the body of the drilling bit.Tang: Tang is the outermost part of the shank that fits into the drilling machine’s spindle.Shank: The shank of a drill bit that fits into the drill.Point: The part has a cone shape and is the end point of the drill bit found at 180°.Body: It is the main part of a drill bit which is between the shank and the point.Below are parts common to all types of drill bits used in part manufacturing: Nevertheless, they have the same parts with little or no alteration. As a result the cobalt drill is continually drilling into hardened steel.Every type of drill bit is unique. To cut beneath the area which is hardening. The cobalt drill, with its thick web, cannot be fed at a fast enough rate This means the drill is cutting softer steel. Penetrate the work hardening stainless fast enough to continually cut beneath the chip which is hardening from deformation.

HSS Magnum™ Super Premium Drill Bits - Norseman™ Drill and Tool a drill with its thin web will They can be used to drill metal, hardwood, and most other materials at greater cutting speeds than carbon steel bits, and have largely High speed steel (HSS) is a form of tool steel high speed steel bits are hard, and much more resistant to heat than high carbon steel. High speed steel taps, feed and speed for both drills and taps and calculator, drill bit terminology and information on our growing company. Since 1951, Norseman™ Drill and Tool - presents our current tools in the product catalog in downloadable sections, along with troubleshooting of high speed steel drill bits and America´s Finest High–Speed Cutting Tools™

Six inch long drill bits