HW-R816 Tunnel Oven
The HW-R816 is a tunnel-type large reflow oven with rail transport from a China SMT machine manufacturer, engineered for continuous, high-capacity SMT production lines. Hot air melts the solder paste on PCB pads, completing the electrical connection between surface mount components and the board. This eight-zone tunnel machine offers upper 8 / lower 8 heating zones with a 3150 mm heating length, a 500 mm standard board width, conveyor speed from 0 to 2000 mm/min, and ±1°C temperature control precision with ±2°C board temperature deviation. Startup power is 48 kW while normal operating consumption is approximately 5-6 kW, a balance designed for energy-conscious PCB assembly plants.
Key Features
- Tunnel-chamber design with upper 8 / lower 8 heating zones, 3150 mm heating length and two external forced-air cooling zones for continuous in-line reflow soldering
- Large-format capability: standard PCB width 500 mm (custom on request), rail adjust range 50-380 mm, front or rear rail fixing
- Fast conveyor from 0 to 2000 mm/min with a 0.01 m/min minimum setting step and computer closed-loop speed deviation within ±2%
- Dual air outlet high-efficiency accelerating ducts plus dual forced exhaust ports provide ample circulating airflow while keeping flux vapor contained
- Special long-life wound heating elements with low thermal inertia and plug-in design simplify maintenance; imported high-temperature short-shaft motors run at 2800 rpm
- Warm-up starts from the middle zones outward, saving about one third of power or time; thermal balance between no-load and full-load states recovers within 25 seconds
- Siemens temperature control modules with SSR drive achieve ±1°C precision and ±2°C in-board deviation across the room temperature to 350°C range
- Dual temperature sensors with an independent microcomputer safety system automatically cut main power at high temperature (e.g. 400°C)
- PLC plus industrial computer control with genuine Windows 7 provides three working modes, online programming, daily logs, zone temperature curves, production database, alarm list and automatic alarm cooling
Technical Specifications
| Heating Zones | Upper 8 / Lower 8 |
| Cooling Zones | 2 |
| Heating Length | 3150 mm |
| Max PCB Width | Standard 500 mm (customizable) |
| Conveyor Direction | L to R (R to L optional) |
| Rail Adjust Range | 50-380 mm (customizable) |
| Rail Fixed | Front or rear |
| Conveyor Height | 900±20 mm |
| Transport System | Mesh belt + rail drive |
| Conveyor Speed | 0-2000 mm/min |
| Power Supply | AC 5-wire 3-phase 380V 50/60Hz (per technical agreement) |
| Startup Power | 48 kW |
| Normal Power | Approx. 5-6 kW |
| Warm-up Time | Approx. 20 min |
| Temp Control Range | Room temperature - 350°C |
| Temp Control Method | Siemens module closed-loop control, SSR drive |
| Temp Control Precision | ±1°C |
| PCB Temp Distribution Error | ±2°C |
| Whole-machine Control | PLC + industrial computer (industrial-grade, stable and reliable) |
| Trouble Alarm | Temperature abnormal (over-high or over-low after constant temperature) |
| Board Drop Alarm | Optional |
| Net / Gross Weight | Approx. 1100 kg / 1400 kg |
| Dimensions (LxWxH) | 4600x1300x1470 mm |
| Air Outlet Distance | 3420 mm |
| Chimney Diameter | 200 mm |
| Substrate Size | Via rail 380 mm |
| Component Height Limit | Upper 20 mm, lower 15 mm |
| Heating Zones | Upper 8 / Lower 8 |
| Cooling | External forced air cooling |
| Warm-up Time | Approx. 20 min to temperature balance |
| Warm-up Sequence | Middle to sides zone by zone, saves 1/3 power or time |
| Curve Switch Time | Under 15 min (amplitude under 100°C) |
| Zone Temp Precision | ±1°C |
| In-board Temp Deviation | ±2°C |
| Thermal Balance Recovery | Within 25 s (no-load to full-load) |
| Zone Shut-off | Per-zone computer shut-off; max front/back temp difference when lower zones off |
| Hot Air Motor | Imported high-temp short-shaft motor, 2800 rpm |
| Heating Element | Special long-life wound heater, plug-in design |
| Air Duct | Dual air outlet accelerating duct, ample airflow |
| Exhaust | Dual forced exhaust ports keep flux vapor inside |
| CV Speed Step | Minimum 0.01 m/min, 0-2 m/min |
| CV Speed Deviation | Computer closed-loop within ±2% |
| Chain Tensioner | Spring automatic adjustment |
| Transport Motor | 120W reduction motor, Delta inverter control |
| Chain Lubrication | Computer-controlled, settable cycle and drip time |
| Rail Width Adjustment | Manual (automatic optional) |
| Mesh Belt | 500 mm wide 316L stainless steel, stable |
| Frame Structure | Integral welded frame, sturdy |
| Upper Furnace Opening | Dual electric screw lifting with self-locking |
| Control Host | Industrial computer + Siemens PLC |
| Control Interface | Genuine Windows 7 |
| Equipment Safety | Power-off protector |
| Temperature Alarm | Audible and visual over/under temperature alarm |
| Dual Sensors, Dual Safety | Independent microcomputer monitoring cuts main power at high temperature (e.g. 400°C) |
| Working Modes | Operation, editing, demonstration with online programming |
| Monitoring and Recording | Daily user operation logs |
| Machine Status Recording | All zones and moving parts; data kept one year |
| Zone Temperature Curves | Daily per-zone curve files |
| Production Database | PCB production reports by board version |
| Alarm List | All alarms saved with items and times |
| Alarm Auto Cooling | Analyzes severity and curves (3 points standard) |
SMT Industry News
Market research forecasts continued growth of the global chip mounter and SMT equipment market through 2032, and smart factory / Industry 4.0 integration - MES connectivity, real-time process data and autonomous logistics - is spreading across SMT production lines worldwide. Tunnel reflow ovens sit at the heart of this transformation: they must deliver stable, repeatable thermal profiles and feed process data back to factory systems. The HW-R816 addresses both requirements with Siemens PLC and industrial computer control, daily operation logs, per-zone temperature curves, a production database and one-year machine status records, helping connected factories keep every reflow soldering batch consistent and traceable.
Applications
As a tunnel-type reflow soldering stage, the HW-R816 targets high-throughput SMT production lines for large-format boards in automotive electronics, communications, power supplies and industrial control. Its tunnel chamber with dual air outlets, dual exhaust extraction and a 500 mm wide 316L stainless steel mesh belt handles continuous in-line production, receiving boards from the solder paste printing and placement stages and delivering cooled boards ready for AOI inspection and downstream PCB handling equipment. Manufacturers expanding SMT capacity with a China SMT machine manufacturer can deploy the HW-R816 as the thermal backbone of the line.
Foreign Trade Sales: Mr. Sun
Phone · WhatsApp · WeChat: +86 18210740377
Email: zghwgc@gmail.com
Website: www.smthw.com
Factory Address: Building 21, Junding Science & Technology Park, Shiyin Village, Luquan District, Shijiazhuang, Hebei, China
