How to choose the drill bit material of electric nail drill machine

As a cutting tool material with a long history and wide application, high-speed steel (HSS) has occupied an important position in the cutting tool industry since its introduction in 1910, thanks to its excellent cutting performance and relatively low production cost. High-speed steel drill bits are not only suitable for small power tools such as hand drills, but also show excellent performance in high-stability environments such as drilling machines. Its repeatable grinding characteristics effectively reduce the cost of use, so it has also gained a certain market share in the nail industry. However, the hardness and wear resistance of high-speed steel are relatively limited. For electric nail drills that require long-term and high-intensity operation, the need to frequently replace drill bits may affect the overall operating efficiency.

Cobalt-containing high-speed steel (HSSE) is a material that adds cobalt to high-speed steel to improve its hardness and red hardness. The drill bits of this material excel in wear resistance, but correspondingly, their toughness is reduced. Cobalt-containing high-speed steel drill bits are particularly suitable for processing some materials with higher hardness, such as special nail enhancers or coatings. In the nail industry, if such materials are frequently processed, choosing cobalt-containing high-speed steel drill bits will be a wise choice. However, due to its relatively high cost, its cost-effectiveness needs to be carefully weighed when using it.

Carbide is a metal-based composite material, which is mainly made of hard materials such as tungsten carbide through complex processes. Carbide drill bits are significantly better than high-speed steel and cobalt-containing high-speed steel in terms of hardness, red hardness and wear resistance, so they have a longer service life. In the nail industry, carbide drill bits can efficiently process various nail materials, including hard nail enhancers and thick nail layers. However, carbide drill bits are relatively expensive and require professional grinding tools for maintenance. In addition, carbide drill bits may not be as tough as high-speed steel and cobalt-containing high-speed steel, so be careful when handling some tougher materials.

When choosing the drill bit material for an electric nail drill, the coating of the drill bit is also an important consideration. The coating can further improve the cutting performance and service life of the drill bit. Common coating types include uncoated, black oxide coating, titanium nitride coating, titanium carbonitride coating, and aluminum titanium nitride coating. Uncoated drills have the lowest cost and are suitable for processing soft materials; black oxide coatings improve lubricity and heat resistance; titanium nitride coatings are the most common choice, but are not suitable for processing high-hardness and high-temperature materials; titanium carbonitride coatings provide higher high-temperature resistance and wear resistance; aluminum-titanium nitride coatings can be used in higher cutting environments, but should avoid processing aluminum-containing materials.