ODM carbide tipped drill bits manufacturer and exporter

In modern manufacturing, carbide tipped drill bits have become the tool of choice for processing various materials because of their superior hardness and wear resistance. However, the efficient operation of carbide tipped drill bits depends not only on their material and design, but also on key factors such as coolant selection, flow rate and pressure. This article will explore in depth how these factors affect the performance of cemented carbide tipped drill bits and propose strategies for optimizing the cooling system to improve bit life and machining accuracy.

Choice of coolant
Choosing the right coolant is crucial for carbide tipped drill bits. Improper coolant may cause the cutting area temperature to be too high, causing hot cracks or uneven hardness on the workpiece surface, thereby affecting the surface quality. For example, when carbide tipped drill bits are machining aluminum or copper, it is recommended to use lubrication and coolant to reduce friction and prevent heat buildup around the machining area. In addition, the use of soluble cutting oil (emulsion) containing ep (extreme pressure) additives can effectively improve the lubrication effect of carbide tipped drill bits and extend tool life.

Flow and pressure
The flow rate and pressure of the coolant directly affect the chip removal ability and cooling effect of the carbide drill bit. In the drilling process, if the coolant flow is insufficient, the cutting heat can not be dispersed in time, increasing the wear of the carbide drill bit. The appropriate high-pressure cooling (about 70 bar) can not only enhance the cooling effect, extend the life of the carbide drill bit, but also improve the chip removal effect of long chip materials such as stainless steel and improve processing safety. For deep hole drilling, the internal cooling design is the first choice to avoid chip blocking, especially when processing long chip materials and drilling deeper holes (greater than 3 times the diameter), to ensure that the coolant flows steadily from the carbide tipped drill bits, at least 30cm in length should not be the cutting fluid flushing phenomenon.

Optimized cooling system
In order to realize the full potential of carbide tipped drill bits, optimizing the cooling system is essential. First, ensure that the oil content of the coolant is between 5-12%, and for processing stainless steel and superalloy materials, the oil content should be between 10-15%. Secondly, the use of net oil can improve the lubrication of carbide tipped drill bits, especially when drilling stainless steel applications bring significant benefits. Third, for external cooling designs, there should be at least one coolant nozzle near the carbide tipped drill bits axis to improve chip removal. Finally, for dry drilling, although usually not recommended, under certain conditions, such as short chip material and hole depth up to 3 times the diameter of the application, you can consider reducing the cutting speed to reduce the wear of the carbide tipped drill bits.

Conclusion
The cooling and lubrication of carbide tipped drill bits is the key to ensure their efficient operation. By carefully selecting the coolant, adjusting the flow rate and pressure, and optimizing the cooling system, the life and machining accuracy of the carbide tipped drill bits can be significantly improved. Manufacturers and operators should continue to pay attention to these factors to adapt to changing processing needs and drive continuous progress in carbide drill bit technology.