1. New Machine/New Ring Die: Gradual Break-in

New dies and pressure rollers should not be put into full-load production immediately. First, use high-oil sawdust and low-feed material for 2-4 hours to break in, gradually increasing capacity to avoid instantaneous tearing of contact surfaces and permanent groove damage.

2. Smooth Start-up and Shutdown: Strictly Avoid Hard Starts

After starting, let the machine idle for 3-5 minutes to warm up, then slowly feed material. If the machine gets stuck, immediately stop and disconnect the power. Clean manually. Repeated forced starts are strictly prohibited, as they can easily damage the spindle, gears, and pressure roller bearings.

Shutdown Procedure: First, reduce the feed rate → run the raw material idle → wash the die with oily material → then turn off the main machine.

3. Stable Load: Avoid Long-Term Overloading

Closely monitor the main machine current and maintain it within the rated load range. Long-term overloading will accelerate fatigue deformation of gears and the spindle, shortening the overall lifespan of the machine. 4. Precise control of the gap between the pressure roller and the ring die: 0.1–0.3mm

Too small a gap: severe frictional heat generation, rapid wear of the die roller, and high-temperature erosion of the bearings;

Too large a gap: slippage of the pressure roller, localized dry grinding, and severe wear on one side of the die hole;

Calibrate with a feeler gauge every 200 hours to maintain a uniform gap around the circumference and prevent uneven wear.