Hot Air Reflow Oven with Computer Control

• Customization: Available
• After-sales Service: 12 Months
• Warranty: 12 Months
• Model NO.: HSF3605-0703
• Type: SMT Equipment
• Certification: CE, ISO
• Structure: Horizontal Type
• Brand: Hengli
• Max Temperature: 300c
• Belt Width: 355mm
• Heating Mode: Heating Hot Air Circulation
• Net Weight: 3000kg
• Cooling Mode: Fan Cooling
• Transport Package: Wooden Box Iron Bracket
• Specification: 12595*1200*1450mm
• Trademark: HENGLI
• Origin: China
• HS Code: 8514390090
• Production Capacity: 800 Sets/Year

Product Description

• Main Application:

This furnace is designed for reflow soldering of SMD parts , chip die attach and similar products. 
Technical Specification:

1. Max Temperature: 300ºC,Temperature Range: RT~250ºC
   1. The Effective Above the Belt Clearance: ≤50mm
   2. Belt Width: 355mm
   3. Belt Material: SUS304
   4. Max Load on the Belt: 10Kg/m²(exclude the belt weight).
   5. Drive System: gears and belt drive
   6. Belt Speed: 87.5-700mm/min, Stepless speed regulation control with VFD.
   7. Heating Element:use nickel-chromium heating wire
   8. Heating Mode: heating hot air circulation
   9. Firing Atmosphere: air
   10. Exhaust System: one exhaust stack is located between the first and second zone, one exhaust stack is located between the second and third zone. And one exhaust stack is located at the seventh zone. There is a heating plate at exit of every stack. Please see the no. 3.2
   11. Cooling Mode: fan cooling.
   12. The Layout of Furnace Structure: Please see the no. 3.1  
   13. Temperature Control Stability: ±1ºC
   14. Chamber Temperature Uniformity: ±3ºC (Soaking Zone Temperature 200ºC)
   15. Temperature Zone: 7 zones
   16. Temperature Control Point: 7 points
   17. Thermocouple: K type
   18. Emergency Stop Button: There are two emergency stop buttons at the entrance and exit of the furnace.
   19. Alarm Protection: over temp, thermocouple failure, other audible and visual protective alarm.
   20. Heating Rate: ≤20ºC/min
   21. The Temperature of Furnace Surface:
   22. Outlet Temperature: <60ºC
   23. Heating Power: 72kW.
   24. The Insulation Power of the Empty Furnace: ≤25KW
   25. Power: Capacity >96KVA,    3   Phase   5  Line, Single Phase Voltage:  277  V Voltage between phases  480    V Frequency   60  HZ, the cable's color:Line wires: Brown, Orange, Yellow, Neutral: Grey or White, Ground: Green
   26. Weight: About 3000Kg.
   27. Overall Dimension: 12595×1200×1450mm (L×W×H).  
   28. Furnace Appearance: outside panel uses high temperature spraying coating and off-white color.
   29. General Description
       The furnace is divided into five major sections: furnace body, temperature control system, atmosphere control system, computer control system(reserved) and drive system.  
         
       3.1  Furnace Body Design
       Please see Table 1 and figure 1 for detailed layout of the furnace structure.
       
       Figure 1:Furnace Layout Drawing
        

       Table 1
       No.	Name	Length	Note
       A	Total Length	12595mm
       B	Load Table	1000mm	Distance from ground height 870 ~ 920 mm, adjustable.
       C	Total length	10595mm
       D	Entrance Insulation Transition  Zone	400mm	Including the 350mm air curtain
       E	Heating Zone	8680mm	7 zones, the length of each zone is1240mm
       F	Exit Insulation Transition  Zone	400mm	Including the 350mm air curtain
       G	Cooling Zone	1110mm	No insulation material, mechanical fan blows the furnace tube directly.
       B"	Unload Table	1000mm	Distance from ground height 1,000~1,060 mm, adjustable.
       H	Furnace Height	1450mm	Exclude the supporting anchor and exhaust stack
       G	Computer operation position

       
       3.2  Atmosphere control system
       There are four air pipe: the flowmeter range for each gas is 12~120L/min. Please see Figure 2
       
       
       
                                       
       Figure 2 Atmosphere schematic diagram

       No.	Name	Note
       A	Air curtain in Entrance	Air atmosphere to prevent the air outside getting inside.
       B	Venturi Exhaust Gas Inlet	Venturi Exhaust gas inlet, can adjust the exhaust volume of two stacks.
       C	Firing gas inlet	Used for fresh air supplement.
       D	Air curtain in Exit	Air atmosphere to prevent the air outside getting inside.
       The actual gas flow of each pipe can be displayed by flowmeters

       
       
       3.3  The Design of Temperature Control System
   30. Temperature Measuring: use K type thermocouple independent measuring and control on the temperature control point of each zone.   
   31. Temperature Control: use of Intelligent temperature controller to control, with PID parameter auto tuning, high temperature upper limit alarm, thermocouple failure and other protective alarm functions.
   32. Heating Control System: after starting hot air circulation, the heating can be turned on. for the heating control, grouped supply the electricity by some alternating current contacts to reduce the instantaneous current impact to the electric fence caused by the equipment.
   33. Control Mode:Solid State relay zero cross trigger mode.
   34. Over Temperature Alarm: when over temperature occurred in some zones, over temperature alarm system in corresponding zones immediately send audible and visual alarm signal and meanwhile the heating of this zone is cut off, the buzzer sounds alarm.
   35. 
       3.3 Drive System Design
       3.3.1 Drive Control uses the VFD control the speed by gear box. The speed is adjustable continually.
       3.3.2Belt conveyor device: to drive the driving and driven wheel through chain and sprocket wheel, and then generate the friction force by driving wheel and the belt drive the belt running. There is a belt deviation guide device on the both sides at the entrance and exit.
       3.4  Industrial Computer system(reserved)
       This furnace is not equipped with industrial computer system at this time, the position for installing the computer system is reserved for updating in near future.