Zero Oxidation Atmosphere Mesh Belt Sinter Furnace for Iron Copper Bearing PM Parts

Powder metallurgy sintering furnace is the core continuous heat treatment equipment for powder metallurgy production line, specially designed for high-temperature sintering of compacted metal powder green parts.

The furnace fills sealed chamber with reducing protective atmosphere (nitrogen-hydrogen mixture, ammonia decomposition gas, pure hydrogen) to heat green compacts at constant high temperature. Metal powder particles diffuse and bond together to densify loose green bodies, improving finished parts’ tensile strength, hardness and dimensional stability.

The whole sintering process avoids air oxidation completely, which makes it standard mass production equipment for PM gears, oil-impregnated bearings, hardware structural parts and stainless steel powder components.

The continuous mesh belt sinter furnace consists of 3 core zones: Debinding Zone, High-Temp Sintering Zone, Slow Cooling Zone.

1.Debinding Zone: Low-temperature heating removes lubricant and paraffin binder inside green compacts, waste gas exhausted by ventilation system.

2.High-Temperature Sintering Zone: Fill reducing protective atmosphere, precise temperature control 850~1180℃, metal powder particles form metallurgical bonding for full densification.

3.Atmosphere Slow Cooling Zone: Workpieces cool down slowly under oxygen-free protective gas to prevent surface oxidation and discoloration, bright clean surface after sintering.

4.Automatic Conveying Cycle: Stainless steel mesh belt transports workpieces at constant speed, fully auto feeding, sintering and discharging for 24/7 mass production.

1.Stainless Steel Mesh Belt Conveying System: High temperature resistant 310S mesh belt, variable frequency speed control, stable operation & anti-deformation.

2.3-Zone Insulated Furnace Chamber: Full fiber lining thick insulation layer, low heat loss and uniform temperature field.

3.Atmosphere Supply System: Compatible with ammonia cracker & nitrogen generator, adjustable nitrogen-hydrogen mixing ratio.

4.Electric Heating & Temperature Control System: Silicon carbide / Ni-Cr heating elements, independent multi-section PID control, temperature uniformity ≤±5℃.

5.Debinding Waste Gas Combustion Unit: Complete combustion of binder waste gas, eco-friendly emission without odor.

6.Full-Auto PLC Touch Screen Control: One-click setting for belt speed, zone temperature and gas flow, program storage & automatic fault alarm.

7.Water-Cooled Double Seal Doors: Double water seal structure blocks outside air, prevent oxygen ingress and workpiece oxidation.

1.Oxidation-Free & Bright Workpiece Surface: Fully sealed reducing atmosphere during whole process, no secondary polishing required to cut post-processing cost.

2.Uniform Temperature Field & Stable Dimensional Tolerance: Independent multi-zone PID control, tiny shrinkage deviation of all parts, production yield over 99.5%.

3.Continuous Auto Mass Production & Labor Saving: 24/7 unattended sintering line, only 1 worker needed for loading & unloading.

4.Energy Efficient & Low Operation Cost: Thick refractory fiber insulation reduces heat loss, power saving over 25% vs old furnace models.

5.Wide Compatibility of Protective Atmosphere: Support ammonia cracking N-H mixed gas, pure hydrogen, nitrogen for iron, copper, stainless steel, alloy powder parts.

6.Low Maintenance & Long Service Life: High temp 310S mesh belt & anti-corrosion heating elements, easy disassembly for quick overhaul.

7.Eco-Friendly Emission Standard: Complete combustion of debinding waste gas, no smoke or odor, meets EU & US factory environmental regulations.

8.Customizable Design Available: Custom furnace width, effective length, max sinter temperature and belt conveying speed per customer demand.

1.Iron-Based PM Parts: PM gears, sprockets, synchronizer sleeves, oil pump rotors, valve seats.

2.Oil-Impregnated Bearings: Fe-Cu sintered bearings, micro motor bushings, office equipment precision sleeves.

3.Stainless Steel PM Components: 304/316L stainless structural parts, medical hardware, food machinery fittings.

4.Copper-Based Sintered Products: Cu-based friction plates, conductive copper parts, heat dissipation components.

5.Automotive PM Parts: Auto transmission sintered parts, shock absorber sleeves, engine small structural components.

6.Home Appliance & Power Tools: Power tool gears, printer & copier precision powder parts.

Q1: What atmosphere is suitable for powder metallurgy sintering?

A1: For iron-based & oil bearing parts: ammonia cracked nitrogen-hydrogen mixed gas is most cost-effective. For high anti-rust stainless steel parts: pure hydrogen atmosphere is recommended. Pure nitrogen only works for low-temperature pre-debinding process.

Q2: Can this furnace run 24 hours continuously?

A2: Yes, full continuous design with stable heating system and long-life mesh belt, support non-stop 24/7 mass production for workshop assembly line.

Q3: Is furnace size customizable?

A3: Fully customized service, we adjust furnace width, total length, cooling zone length, max temperature and gas flow system according to your daily output and product material.

Q4: How long is the warranty period?

A4: Main heating elements, PLC controller and vacuum/atmosphere valves enjoy 12 months warranty, lifetime free technical guidance and affordable spare parts supply.