Thick Film Heater, Dry and Firing Furnace, Water Cooling

• After-sales Service: 12 Months
• Warranty: 12 Months
• Type: Thick Film Firing Equipment
• Certification: CE, ISO
• Structure: Horizontal Type
• Brand: Hengli
• Model NO.: HSK4106-1211Z
• Max Temperature: 1050c
• Belt Width: 410mm
• Belt Material: Cr20ni80
• Cooling Mode: 12.Cooling+Fan Cooling and Water Cooling Mixed Coo
• Chamber Temperature Uniformity: +-3
• Temperature Zone: 12 Zones
• Transport Package: Wooden Box Iron Bracket
• Specification: 12195*1200*1350mm
• Trademark: HENGLI
• Origin: China
• HS Code: 8514390090
• Production Capacity: 800set/Year

Product Description

 HSK4106-1211Z Belt Furnace

• Main Application:

This furnace is designed for thick film products firing, such as Hybrid IC, chip-R, SMD components terminal, LTCC, Stainless steel heater, PV thin film cell and other similar products.  

,Technical Specification:

1. Max Temperature: 1050ºC,Temperature Range: RT~900ºC,
   1. The Effective Height of the Product: ≤60mm.
   2. Belt Width: 410mm.
   3. Belt Material: Cr20Ni80.
   4. Max Load on the Belt: 50Kg/m2(exclude the belt weight)
   5. Drive System: Big wrap angle friction drive.
   6. Belt Speed: 50~300mm/min, Stepless speed regulation control with frequency conversion, typical belt speed is about 150-180mm/min
   7. Heating Element:Use infrared quartz tube to heat from top and bottom. Firing furnace use FEC heater to heat from top and bottom heating mode
   8. Firing Atmosphere: Dry and clean Compressed air.
   9. Atmosphere Control: 13 compressed air inlet pipes
   10. Exhaust System: there are 2 exhaust stacks in the pre-Heating and firing section. 
   11. Cooling Mode: use insulation cooling+fan cooling and water cooling mixed cooling fans.
   12. The Layout of Furnace Structure: Please see the no. 3.1  
   13. Temperature Control Stability: ±1ºC.
   14. Chamber Temperature Uniformity: ±3ºC (test after keeping 2 hours at flat Temperature 850ºC),
   15. Temperature Zone:12 Zones.
   16. Temperature Control Point: 16 points( Zone 5-8 in the firing section use top bottom two points temperature control, others use single point control)
   17. Thermocouple: K type, made in China.
   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, belt speed, motor over load, discharge, low gas pressure, other audible and visual protective alarm
   20. The Consumption of Compressed Air: 20~25m3/h.
   21. The Working Pressure of Compressed Air: 0.2-0.4MPa
   22. The Temperature of Furnace Surface:
   23. Heating Power: 78Kw.
   24. The Insulation Power of the Empty Furnace: ≤26kW.
   25. Power: Capacity >104KVA, ,  3   Phase 5 Line, Single Phase Voltage:  220 V Voltage   between phases   380    V Frequency  60  HZ, the cable's color:    no requirement.
   26. Weight: About 4000Kg.
   27. Overall Dimension: 12195×1200×1350mm (L×W×H).
   28. Furnace Appearance: outside panel uses high temperature spraying coating and off-white color.

General Description
The furnace is devided into four major sections: furnace body, Atmosphere control system, temperature control system and drive system.  
  
3.1  Furnace Body Design
Please see Table 1 and figure 1 for detailed layout of the furnace structure.



Feague 1:Furnace Layout Drawing
 

Name	Length	Note
Total Length	12195mm
Load and Unload Table	600/1000mm	Distance from ground height 770 ~ 820 mm, the length of load and unload table is the same.
Furnace frame	11410mm
Entrance Vestibule Zone at Drying Section	350mm	Include entrance curtain (multilayer stainless steel sheet).
Entrance Insulation Zone at Drying Section	65mm	Ceramic fiber insulation
The Heating Zone at Drying Section	1500mm	3 zones, the length of each zone:500mm
Exit Insulation Zone	65mm	Ceramic fibre material thermal transition
Transitional section	600mm	Ceramic fibre material thermal transition
Terminal Insulation Transitional	150mm	Insulation material
Heating Zone at Firing Section	4050mm	9 zones, the length of each zone is 450mm.
Insulation Zone at Firing Section	1500mm	No heating elements, only insulation material
Forced Fan Cooling Zone at Firing Section	1065mm	Mechanical cooling fan blow the furnace tube directly.
Water Cooling Zone at Firing Section	1250mm	1 segment water jacket(include exit curtain), water flow from bottom to the top.
Furnace Height	1350mm	height

3.2  The Design of Temperature Control System

1. Temperature Measuring: use K type thermocouple independent measuring and control on the temperature control point of each zone.   
2. Temperature Control: use of Shimaden Intelligent temperature controller to control, with PID parameter auto tuning, high temperature upper limit alarm, thermocouple failure and other protective alarm functions.
3. Heating Control System: for the heating control, grouped supply the electricity by 3 alternating current contactors to reduce the instantaneous current impact to the electric fence caused by the equipment.
4. Control Mode:Solid State relay zero cross trigger mode.
5. 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.

3.4  Drive System Design
3.4.1 Drive Control uses the frequency converter drive frequency variable motor to control the speed by gear box. The speed is adjustable continually.
3.4.2Belt conveyor device: to drive the driving and drived 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.

Others:
1.   Ultrasonic cleaning machine (cleaning mesh belt)
It can effectively clean the impurities and small particle on the belt to avoid product contamination.
2.  Discharge Alarm: photoelectric switch positioning.
The system will give out the alarm signal and audible indication when the parts get to the specified location.
3.  Computer Control System
Use DCS control system, intelligent temperature controller control (Shimaden), industrial computer monitor, industrial computer can carry out multiple programs saving, real-time temperature and alarm record, data saving and printing and other functions. It also can provide the temperature calibration function in the chamber for adjusting process requirement.