HW-R816 Reflow Oven
The HW-R816 is an eight-zone tunnel-type large reflow oven from a China SMT machine manufacturer, built for high-volume SMT production lines. Hot air melts the solder paste on PCB pads, forming the electrical and mechanical connection between components and the board. Headline specifications include eight upper and eight lower heating zones over a 3150 mm heating length, a standard PCB width of 500 mm, temperature control precision of ±1°C, and board temperature distribution error of ±2°C. With Siemens temperature control modules, SSR drive, and PLC plus industrial computer control, it brings precision and traceability to demanding PCB assembly.
Key Features
- Eight upper and eight lower heating zones across a 3150 mm heating length, with two external forced-air cooling zones for large-format boards up to 500 mm wide
- Siemens temperature control modules with SSR drive hold ±1°C zone precision and ±2°C board temperature distribution error over a room temperature to 350°C range
- Rail adjustment from 50 to 380 mm, mesh belt plus rail transport, and conveyor speed from 0 to 2000 mm/min in 0.01 m/min steps
- Computer closed-loop conveyor control keeps speed deviation within ±2% for stable in-line board flow
- Imported high-temperature short-shaft hot-air motors (2800 rpm) and special long-life plug-in wound heaters deliver fast, even heating with low thermal inertia
- Dual air outlet accelerating ducts and dual exhaust extraction ports keep flux vapor inside the machine
- Middle-to-sides zone-by-zone warm-up sequence saves about one third of power or time; thermal balance recovers within 25 seconds between no-load and full-load states
- Industrial computer plus Siemens PLC control with genuine Windows 7 offers operation, editing and demonstration modes with online programming
- Full process records: daily operation logs, per-zone temperature curves, production database, alarm list and alarm auto-cooling (3-point standard)
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 | 45 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
October 2026 saw NEPCON Asia 2026 showcase next-generation SMT placement systems, advanced packaging solutions and autonomous material handling, including the China debut of the ASMPT SIPLACE V, Essemtec all-in-one SMT and packaging solutions, and Hanwha Semitec chip mounters with AMR robots. The same event underlined that AI server boards and high-end computing PCBs are driving strong demand for SMT capacity and high-precision placement equipment. Large eight-zone reflow ovens such as the HW-R816 fit this trend directly: 500 mm board width, 3150 mm heated length, ±1°C control precision and full process logging give manufacturers the thermal capacity and traceability that high-end computing board production demands.
Applications
The HW-R816 is built for medium and high-volume SMT production lines assembling large PCBs, including communications equipment, industrial control systems, power electronics and LED lighting panels. With 500 mm board width, rail plus mesh belt transport and 0-2000 mm/min conveyor speed, it keeps pace with high-speed placement machines and hands boards smoothly to AOI inspection and downstream board handling equipment. For PCB assembly factories seeking a large-capacity reflow soldering stage from a China SMT machine manufacturer, the HW-R816 offers the thermal headroom and process records that demanding production requires.
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
