1. If the water jacket leaks or the stirring rod leaks, and the stirring water seal leaks, it should not be converted to a hot standby furnace. If the valve of the air branch pipe is not tightly closed or the saturated steam valve is seriously leaked and cannot be repaired and replaced during the hot standby, it should not be used as a hot standby.Surgical instruments stainless steel vacuum heat treatment 2. When planning hot standby, a producer with better furnace condition should be selected for hot standby. If the fire layer is selected to fall, serious slagging will occur in the furnace to generate hot standby, which will inevitably worsen the furnace condition.Vacuum Brazing Technology of Stainless Steel Radiator Core 3. For the production furnace planned for hot standby, the furnace should be probed in advance, and the part with a small amount of slag should be drilled to break the slag, and drilled at each point of the furnace section to make the furnace section basically tight.Multi-purpose vacuum heat treatment equipment 4. Appropriately reduce the ash layer. 5. Properly thicken the coal seam.Heat Treatment of DZ4 Alloy in High Pressure Gas Quenching Vacuum Furnace 6. Check whether the maximum relief valve cover is flexible.