Coolant Temperature Control: Why Overheating Causes Problems
Coolant temperature affects drilling performance more than most operators realize. I have seen shops chase tool life problems and hole position issues for months before discovering the root cause was nothing more than coolant running 10 degrees hotter at the end of the shift than at the start. Temperature control is not optional for consistent deep hole drilling. Problem Description Coolant temperature changes throughout the day as the machine runs. A machine that starts at 22 degrees in the morning can be circulating coolant at 38 degrees by the afternoon if the system has no chiller. The temperature rise affects three things directly: coolant viscosity, machine structure alignment, and tool life. ...