COOLANT INJECTION DEVICE

摘要

Disclosed is a coolant injection device used in a wire saw apparatus. The present invention relates to a coolant injection device that is designed to inject a coolant through a double pipe in a wire saw apparatus for cutting an ingot into a wafer size to realize uniform cooling, thereby enhancing quality of a wafer. The coolant injection device according to the present invention comprises an inner pipe connected to a coolant supply pipe to make a coolant supplied thereinto and having a discharge hole formed therein for discharging the coolant to the outside, and an outer pipe in which the inner pipe is installed with a space therebetween and including a nozzle which the coolant discharged through the discharge hole is collected and then discharged from.