Product Introduction:

The increasing need of productivity, closed tolerance, dimensional stability and cost put tremendous pressure on manufacturing industries to design and develop new technologies to meet the required goal. Hence, coating over the existing tool plays an important role in achieving higher production rate, better tool life and minimization in cost. Our uncoated carbide inserts provide an option to customers to select the most suitable and affordable product depends on the real working condition. The majority of industrial drill bits come in two general design categories: twist and insert. Insert drill bits are usually inexpensive and can be cheaply replaced when dull, eliminating the need for drill sharpening. They can also function without relying on a grind wheel. Insert drill bits are relatively easy to use and have a ground structural point that helps to center the drilling operation. However, insert bits can leave a burr at the hole’s exit, often necessitating post-drilling smoothing treatments. Also, if this drill bit breaks it can damage the tool holder, which may need to be replaced.

Technical information:

The influence and effect of coating on tool performance:

1. Role and Influence of Coating:

In the cutting process, the contact between the insert and the workpiece is exposed to a high temperature of 800-1200 ° C. The cutting heat generated by high temperature is transmitted to the insert, resulting in tool wear which lead to deformation of insert, and then chip take away the cutting heat. At the same time as the chips are discharged, the chips rub against the rake face of the tool to raise the temperature, causing crater wear on the rake face (expressed in depth), and on the other hand, the frictional heat of the flank face and the workpiece rises sharply, causing flank wear. The tool coating maintains the strength and toughness of the tool body while maintaining a higher hardness and wear resistance on the surface, as well as high red hardness.

2. Selection of cooling method

A vacuum is often formed around the tool during high-speed milling. Therefore, if the coolant is applied to the tool, it will be thrown out and the cooling effect will not be achieved. The coolant should be applied to the front and rear sides of the tool for better cooling.