Vacuum Cleaning Furnace Usage Tips

Vacuum Cleaning Furnace Usage TipsCore Principle: Control temperature and vacuum degree properly, follow standard operating procedures, and maintain sealing and heating systems regularly to ensure safety and extend equipment lifespan. ## 1. Pre-Use Preparation - Inspect seals (door gaskets, flange gaskets) for integrity; no damage, deformation or oil contamination. Apply special sealant if necessary. - Verify no leakage in the vacuum system (vacuum pump, pipelines). Conduct no-load vacuum test to reach the specified vacuum level (usually ≤10Pa). - Clean the furnace chamber of residual impurities and oil to ensure heating uniformity. Check heating tubes and thermocouples for secure installation. - Confirm stable power supply and unobstructed cooling system (if applicable). Ensure three-phase voltage meets equipment requirements (e.g., 380V±10%). ## 2. Operational Details - Dry workpieces thoroughly with no excessive volatile organics to avoid safety hazards. - Arrange workpieces evenly, maintaining ≥5cm distance from chamber walls and heating tubes; do not block temperature measurement points. - Heat up gradually at the specified rate (typically 5-10℃/min) to prevent component deformation. - Monitor vacuum degree and temperature continuously. Pause immediately if abnormalities occur; troubleshoot before resuming. - After cleaning, cool naturally to below 200℃ before slowly breaking vacuum (with dry nitrogen or air) to avoid condensation or oxidation. ## 3. Post-Use Maintenance - Wipe the furnace chamber and workpiece brackets with a lint-free cloth after cooling to room temperature. - Check vacuum pump oil level and quality every 10-15 uses; replenish or replace oil as needed. - Inspect seals every 3 months; replace if hardened or cracked. Clean carbon deposits on heating tubes with a dedicated cleaner. - For long-term storage (over 1 month), maintain vacuum or fill with dry nitrogen to prevent corrosion. ## 4. Safety Taboos - Do not place flammable, explosive or corrosive substances in the furnace. - Never open the door without breaking vacuum or at high temperatures. - Do not modify parameter settings or remove safety devices (e.g., over-temperature alarm, pressure relief valve) without authorization.