RTC LA-306 IR Furnace 
Factory Reconditioned
- Production and Laboratory Applications
- 1000°C operation, 3 Heating Zones
- Controlled CDA, N2, and/or FG Atmosphere
- Upgraded to 3-Phase 208 Vac, 50/60 Hz
- BRAND NEW Discrete Digital Control System
- Latest feedforward feedback speed control
- Stainless steel LOAD and UNLOAD stations
RTC LA-306 Producton Lab Furnace
Call (949) 218-4996 if you are interested.
Click to see larger picture. | Click here to see specifications datasheet for the LA-306 with special 30-inch unload extension.
Click here to see picture book.
Factory Reconditioned RTC LA-306 IR Belt Furnaces
At 50% of the price of a new LA-306, you get a furnace that can be used for another 10-15 years with an all new control system and electricals. We have a limited number of refurbished RTC LA-306 furnaces; this LAST ONE in stock and a few more in the warehouse available for reconditioningin our factory. These units are fully tested to original RTC factory specifications and are warranteed for one year from shipment. These furnaces are offered in conjunction with RGL Enterprises.
Compact High Temperature Infrared Thermal Processing Belt Furnace
True near-infrared furnace. The LA-306 is a compact high temperature production and laboratory infrared furnace. The small 6 inch wide chamber offers excellent temperature control and rapid rise to 1000 °C. Process atmosphere is controlled much like a clean room: pressurized gas is pushed through the heating chamber insulation providing a pre-heated, laminar flow for a uniform, stable atmosphere. Precise temperature is maintained by control thermocouples above the belt in each zone quickly sensing changing conditions. IR quartz heating lamps inside the chamber instantaneously adjust their output to achieve tight temperature control: each load through the furnace sees the same temperature. The small size and furnace chamber assures good temperature control with efficient use of power and proces gas. The LA-306 furnace can be configured for one gas (CDA, Nitrogen) or dual gas operation (nitrogen and forming gas).
The furnace is operated via individual digital PID controllers to control the temperature in each zone. For efficiency and smooth control, phase-angle fired SCR's are used to power the lamps.
Process Applications
The LA-306 can process substrates, wafers, PCBs, metal, ceramic, glass or polycarbonate parts for Package Sealing, Epoxy Die Attach, Polymer Curing, Reflow Soldering, Hybrid/Thick Film Firing, General Thermal Processing, Brazing, Annealing, Tempering and Metal Sintering applications. This furnace is popular for use dental labs and dental production applications.
Click to view movie clips of the RTC LA-306 startup, profiling and cooldown.
Furnace Arrangement
| THERMAL PROCESSING | |
|---|---|
| Parameter | RTC LA-306 |
| Load Station | 215 mm (8.5 inches) |
| Entrance Isolation Baffle with Venturi Exhaust | 159 mm (6.25 inches) |
| IR Heating Chamber, Zone 1 | 168 mm (6.6 inches) |
| IR Heating Chamber Zone 2 | 363 mm (14.3 inches) |
| IR Heating Chamber Zone 3 | 168 mm (6.6 inches) |
| Transition Tunnel | 159 mm (6.25 inches) |
| CACT Closed Atmosphere Cooling Chamber | 1015 cm (40 inches) |
| Unload Station | 215 mm (8.5 inches) |
Specifications for RTC LA-306 Laboratory Furnace
NEWLY UPGRADED FROM SINGLE PHASE TO 3-PHASE
| SPECIFICATIONS | |
|---|---|
| Parameter | LA-306 |
| Process Gas | CDA, Nitrogen (-N), Forming Gas with premixed Hydrogen and Nitrogen (-FG) |
| Control Zones | 3 zones |
| Heating Chamber length | 700 mm (27.5 inches) |
| Cooling Chamber | CACT – CDA or N2 convective and Radiant cooling, exterior fan heat removal. |
| Belt Speed | 10-250 mm/min (0.5-10 ipm) |
| Conveyor Belt | BNV- low mass, stabilized Nichrome-V |
| Belt Size, nominal width | 150 mm (6 in.) |
| Exhaust | Improved venturi exhaust stacks to reduce process gas consumption. Number of stacks vary with process requirements. |
| Temperature Capacity, max | 1000°C |
| Electrical | Three phase design. IR lamp controls automatically keep IR spectrum constant. |
Facility Requirements
| SPECIFICATIONS | |||
|---|---|---|---|
| Parameter | RTC LA-306 | Max Connected Power, Current | Operating Current @ 950C |
| 3-Phase Power Curve: Operating Current as a function of Temperature |
208 Vac, 3 ph, 50/60 Hz |
14.0 kW, 38.9 |
26.0 A |
| Parameter | Process Section | Typical (CDA exchange rate: 2x) 425 C operation, balanced flow |
Typical (N2 exch rate: 3x) 950 C, low O2, 25 sLpm excess flow |
| Process Gas Supply | Gas 1 | 80 Lpm @ 5 bar (170 SCFH @ 70 psig) |
146 Lpm @ 5 bar (308 SCFH @ 70 psig) |
| Gas 2 (Heating Chamber only) | see Gas 1 |
33 m3/hr @ 5 bar (69 CFM @ 70 psig) |
|
| Process Gas Exhaust | Gas 1 + Gas 2 | 80 Lpm (170 SCFH) |
95 Lpm (202 SCFH) |
| Enclosure Ventilation | Furnace Cabinet Fan (1) vent to room or facility exhaust system |
930 m3/hr @ 30°C (550 cfm @ 86°F) |
|
| Control Cabinet Fans (2) (vents to room) |
360 m3/hr @ 30°C (212 cfm @ 86°F) |
||
| Dimensions | Length | 2.54 m (100 in.) | |
| Width | 0.46 m (18 inches) | ||
| Height | 1.64 m +/- 0.0254 (62.25 inches +/- 1.0) | ||
| Adjustable Conveyor Height | 965 mm +/- 25.4 (38 inch +/- 1.0) | ||
| Weight | 408 kg (900 LB) | ||