1. First, prepare a steel wire and a threader, put one end of the steel wire on the threader, insert the top end of the steel wire into the threader and slide down until the steel wire passes through the threader.

2. Secondly, aim the threader at the threading port of the steel cord machine, insert the steel wire from the threading port, and slowly pull out the threader, so that the steel wire can smoothly enter the machine through the threading port.

3. Finally, do a good job of calibration, check whether the steel wire passes through the machine normally, and readjust the position of the steel wire end to ensure the tensile strength and stability of the steel cord when the machine is running.