1. Open the water inlet valve of the sealed water bucket of the quenching furnace, fill the water bucket with water until the liquid level just overflows, then adjust the water inlet volume, and seal the sealing port at any time to prevent air from entering the furnace.Atmospheric Pressure and Vacuum Sintering of High Purity Dense MgO Ceramics 2. Check the height of the liquid level and water seal in the quenching tank so that the liquid level can seal between the furnace and the outside world and prevent air from entering the furnace.horizontal-band-saws 3. Check whether the various gas sources are normal and whether the pipelines are smooth to ensure normal working needs.Applied Crack Repair Technology of Vacuum Brazing 4. Check whether the fan cooling water pipe is smooth to ensure the normal operation of the fan. 5. Check whether the power line is normal to ensure normal heating in the furnace.antsmachine 6. Check whether the transmission and lifting are stuck.