1. Purpose of a Vacuum Sintering Furnace
- Designed for high-temperature heating of powder-metal compacts.
- Heating elements must have high thermal conductivity, resistance to deformation, and minimal heat loss.
- Material of heating elements should be chosen based on the chemical properties of the workpiece to ensure quality, especially at 1800°C.
2. Cleaning Procedures
- Chamber Cleaning
- Ensure the furnace chamber is clean and free from debris.
- Inspect all gas ports for blockages.
- Evaporate any residual liquids by applying vacuum for a long period to achieve high vacuum.
- Cleaning Organic and Thermal Components
- Use alcohol to clean organic residues.
- Heat discharge and organic exhaust areas should be thoroughly cleaned.
- Seals and Vacuum System
- When disassembling furnace seals, vacuum systems, or other components, clean with alcohol or gasoline, dry thoroughly, and apply vacuum grease before reassembly.
- Vacuum Requirements
- After shutdown, maintain the furnace at a vacuum below 66.5 LPA.
- Supporting Equipment Maintenance
- Vacuum pumps, valves, measurement instruments, thermal instruments, and electrical components should be maintained according to the manufacturer’s technical instructions.
3. Safety Notes
- Perform maintenance without power.
- If repair is needed while powered, it must be done by trained personnel, ensuring both personal and equipment safety.
Summary:
Cleaning a vacuum sintering furnace requires attention to chamber cleanliness, proper handling of heating elements, unblocked gas ports, and correct maintenance of vacuum components. Safety protocols are essential when working with high-temperature and high-vacuum equipment.