Core System Composition of Complete Equipment

1. Main Furnace Body

Steel shell lined with multi-layer refractory thermal insulation materials with sealed cavity design. High-temperature sections adopt heat-resistant steel structures with excellent thermal shock resistance and organic corrosion resistance. Continuous furnaces are divided into preheating section, high-temperature cleaning section and cooling section.

2. Heating System

Electric heating type: Resistance heating elements and temperature control modules; Gas-fired type: Low-NOₓ burners and flue passages with independent zoning temperature control.

3. Atmosphere & Gas Supply System

Air blowers, nitrogen storage tanks / nitrogen generators, pipeline regulating valves and oxygen content monitoring devices, used to adjust oxygen concentration inside the furnace to match combustion or pyrolysis processes.

4. Conveying Mechanism (Exclusive for Continuous Furnaces)

Heat-resistant mesh belts, furnace rollers, pusher beams and drive motors with variable frequency speed regulation to ensure workpieces pass through the furnace chamber at a constant speed.

5. Tail Gas Treatment System (Mandatory Standard Configuration)

Thermal oxidation combustion chamber, waste heat recovery devices and dust removal units together with exhaust gas purification pipelines. Incompletely decomposed flue gas and combustible gas are incinerated secondarily for compliant emission while recovering flue gas waste heat.

6. Cooling System

Forced air cooling, water cooling jacket or slow cooling chambers. Workpieces are cooled gradually after cleaning to prevent re-oxidation and deformation when high-temperature workpieces contact ambient air.

7. Automatic Electrical Control & Safety System

Integrated control system with PLC and touch screen, preset with multiple sets of cleaning process curves. Equipped with over-temperature alarm, furnace pressure protection, combustible gas detection, oxygen deficiency protection and emergency shutdown interlock functions.

4. Core Working Principles & Technological Processes

4.1 Atmospheric Oxidative Combustion Type (General Version)

Workpiece loading → Furnace temperature rises to process setpoint → Grease, cutting fluid and organic coatings on workpiece surfaces melt and vaporize under heat → Fully mixed with air inside the furnace for oxidative combustion and decomposed into harmless gaseous substances → Flue gas is introduced into tail gas treatment system for secondary purification → Workpieces cool down and are discharged.

4.2 Inert Atmosphere Pyrolysis Type (For Precision Parts)

Sealed workpiece charging → Nitrogen purging to replace air inside furnace and build inert protective atmosphere → Temperature rises to pyrolysis temperature → Surface organic substances undergo oxygen-free pyrolysis and volatile gasification → Volatiles are led out along with protective gas for centralized harmless treatment → Workpieces cool slowly under continuous nitrogen protection before unloading.

Standard Common Process Temperature Ranges

• Low-temperature pre-degreasing: 200~350℃, soften thick surface oil stains and preliminarily volatilize light organic substances

• Main high-temperature cleaning section: 350~650℃, mainstream operating temperature range for thorough decomposition of oil stains, carbon deposits and coatings

• Intensified high-temperature cleaning: 650~850℃, applied to stubborn carbon deposits, aged coatings and thick organic layers