Annealing oven NAT series

thermaltemperingheat treatment

Overview
Due to the compact tabletop design, the NAT series is well suited for installation in laboratories or rooms with limited space. These forced convection chamber furnaces provide very good temperature uniformity.

Applications

• Preheating components for shrink-fit processes
• Heat treatment of metals in air: aging, stress relieving, soft annealing, tempering
• Heat treatment of glass

Features

• Tmax 650 °C or 850 °C
• Horizontal air circulation with stainless steel baffles for optimum distribution
• Ventilated dual-shell housing in textured stainless steel for low surface temperature and high stability
• Integrated control unit
• Swing door hinged on the right, door opening temperatures up to 400 °C
• Temperature uniformity up to ±6 °C according to DIN 17052-1 (model NAT 15/65 up to ±5 °C)
• Air inlet in the rear wall; adjustable exhaust port in the furnace ceiling (not for NAT 15/65)
• 15 mm port in furnace ceiling (not for NAT 15/65)
• Over-temperature limiter with adjustable cutout to protect furnace and load
• Exclusive use of insulation materials not classified under EC Reg. 1272/2008 (no alumino-silicate wool / RCF)

Controller & Documentation

• B500/B510 touch controller (5 programs with 4 segments each)
• NTLog Basic for process data recording via USB
• NTEdit freeware for convenient program input via Excel on PC
• NTGraph freeware for evaluation and documentation via Excel on PC
• MyNabertherm app for online monitoring on mobile devices

Additional equipment (not for NAT 15/65)

• Base frame
• Charging racks for multi-level loading
• Equipment package with batch and process control and documentation via VCD software

Technical specifications (excerpt)
Model | Tmax °C | inner W mm | inner D mm | inner H mm | Volume l | outer W mm | outer D mm | outer H mm | Heating power kW | Electrical connection | Weight kg | Heat-up time min to Tmax:
NAT 15/65 | 650 | 295 | 340 | 170 | 15 | 470 | 790 | 460 | 2.8 | 1-phase | 60 | 35
NAT 30/65 | 650 | 320 | 320 | 300 | 30 | 810 | 620 | 620 | 3.0 | 1-phase | 90 | 80
NAT 60/65 | 650 | 400 | 400 | 400 | 60 | 890 | 700 | 720 | 3.0 | 1-phase | 110 | 100
NAT 15/85 | 850 | 320 | 320 | 150 | 15 | 690 | 880 | 570 | 3.0 | 1-phase | 85 | 190
NAT 30/85 | 850 | 320 | 320 | 300 | 30 | 690 | 880 | 720 | 3.0 | 1-phase | 100 | 230
NAT 50/85 | 850 | 400 | 320 | 400 | 50 | 770 | 880 | 820 | 4.5 | 3-phase | 130 | 230

Notes

• External dimensions vary when furnace is equipped with additional equipment; dimensions on request
• Connected load may be higher depending on furnace design
• Approximate information for empty furnace