The service life and daily maintenance points of multi-purpose furnace

Multi-purpose Furnace Service Life and Daily Maintenance Tips
Multi-purpose furnaces, as an essential component of heat treatment equipment, are widely used in processes such as quenching, tempering, and annealing metal parts. Daily maintenance is crucial to ensure stable operation, extend service life, and reduce maintenance costs. This article briefly explains the factors affecting service life and key maintenance points for your reference.

Key Factors Affecting Multi-purpose Furnace Service Life
Generally speaking, the design service life of a multi-purpose furnace can range from 8 to 15 years, depending on the following factors:
Equipment Structure and Material Selection: The quality of the furnace shell material, heating elements, and electronic control system directly impacts service life. Reputable manufacturers typically use alloys with high temperature resistance and strong oxidation resistance.
Use Frequency and Temperature Control: Frequent startups or prolonged high-temperature operation accelerate equipment aging, especially for heating elements and insulation.
Process Atmosphere: When using special atmospheres such as ammonia decomposition gas, nitrogen, or carbon potential control, higher corrosion resistance is required within the furnace.
Maintenance Status: Regular inspection, cleaning, and calibration of the control system directly impacts service life. Multi-purpose Furnace Service Life and Daily Maintenance Key Points.

Key Points for Daily Maintenance
Regularly clean the furnace chamber: Prevent impurities such as carbon deposits and metal debris from affecting heating uniformity and atmosphere circulation.
Check seals: Ensure the furnace door and piping are properly sealed to prevent atmosphere leakage and air ingress, thereby preventing oxidation within the furnace.
Check the temperature control system: Calibrate thermocouples, control instruments, and PLC systems at least monthly to ensure accurate temperature control.
Maintain heating elements: Observe for deformation, aging, or breakage, and replace any defects promptly.
Inspect gas and electrical circuits: Regularly inspect gas valves, solenoid valves, cable connectors, and other components to prevent safety hazards such as leaks and short circuits.
In short, scientific and reasonable use and maintenance of multi-purpose furnaces not only prolongs the life of the equipment but also improves heat treatment quality and production efficiency. It is recommended that companies establish a comprehensive equipment maintenance log and inspection system to ensure the long-term, stable operation of multi-purpose furnaces.