Roller Type Annealing Firing Furnace

• After-sales Service: 12 Months
• Warranty: 12 Months
• Type: PV Firing Furnace
• Certification: ISO
• Structure: Horizontal Type
• Brand: PV Firing Furnace
• Model NO.: HGL7003-0804
• Heating Power: 128kw
• Number of Temperature Zones: 8 Zones
• Temperature Control Points: 24 Points
• Heating Element: Nickel Chromium Alloy Heating Wire
• Transport Package: Wooden Box Iron Bracket
• Specification: 8000*1750*1800mm
• Trademark: HENGLI
• Origin: China
• HS Code: 8514390090
• Production Capacity: 800set/Year

Product Description

HGL7003-0804 Roller type Firing Furnace

1,Typical application fields:

Typical application fields

Mainly used for drying, adhesive removal, curing treatment of electronic products, drying treatment of organic solvents on metal surfaces, and also for annealing, sintering and other processes of photovoltaic glass

2,Equipment specification and structure:

Code	Name		Length	Note
A	Total length		8450mm	Transmission distance from ground height is 1350 ± 25mm
B	Entrance insulation part		300mm	Thermal insulation transition, with air curtain structure to prevent external airflow interference
G	Buffer part		450mm
C	Heating section		7400mm	15 temperature zones,the length of each zone is 925 mm
D	Exit insulation part		300mm	Thermal insulation transition, with air curtain structure to prevent external airflow interference
E	Height		1800mm
F	Equipment equipped with electric control cabinet
Chamber structure		1. Adopting a segmented and openable structure, stainless steel inner liner structure, and ceramic roller drive 2. Each section of the upper furnace body is equipped with 2 electric cylinders, which can be independently and automatically opened for maintenance 3. The electric cylinder has a self-locking function in place, ensuring safe operation after opening; At the same time, it has the function of tightening in place, improving the sealing effect of the sealing surface of the furnace body 4. After the furnace is opened, it is easy to maintain the interior of the furnace and add safety support to ensure the safety of maintenance operations 5. Glass is easy to clean and can be quickly cleaned after being broken in the cavity 6. Add lifting lugs on the top of the furnace to facilitate later lifting and maintenance 7. Arrange transmission rollers at furnace entrance and exit
Effective height		≥30mm
Furnace weight		About 4500Kg
Dimensions		8000×1750×1800mm(L×W×H),Excluding chimneys, indicator lights, and footings. The width of the lower furnace body is 1750mm, and the width of the upper furnace body is 1700mm
Appearance color		Outside panel uses high temperature spraying coating and off-white color.

3,Thermal system:

Rated temperature	150ºC(The surface temperature of glass in a constant temperature zone)
Maximum temperature	The maximum temperature setting of the heating element can reach 500 ºC
Heating element	Nickel chromium alloy heating wire, heating from up and down. Single temperature zone individual control ensures temperature uniformity and easy control
Heating power	128kW
Heat preservation power of empty furnace	≤42kW
Number of temperature zones	8 zones
Temperature control points	24 points
Thermocouple	K type
Surface temperature rise	<35ºC
Temperature control stability	±1ºC
Temperature uniformity	Temperature uniformity in the horizontal area of the heating section substrate ≤+3 ºC (under closed atmosphere and chimney conditions) Temperature uniformity in the horizontal area of the constant temperature section substrate ≤+3 ºC (under closed or open atmosphere and chimney conditions) Horizontal area of the substrate (left, center, and right points)

4,Transmission system:

Effective width	640mm, glass suspended width 615mm
Drive roller rod	High precision ceramic rollers. The contact between the transmission shaft and the cavity is protected by a sleeve to prevent the furnace body from stretching due to heat, affecting the transmission shaft, and providing insulation while avoiding the entry of external dust.
Maximum Load	20Kg/piece
Transmission mode	Roller continuous transmission. When conveying, the glass edge only contacts 0.75-1.25cm, and the rest does not touch the roller rod; The glass conveying is stable, and the roller table can limit the glass conveying without deviation; The roller limit will not damage the glass corners
speed range	200-2000mm/min, typical process belt speed 1540mm/min
transmission accuracy	From import to export, product deviation within ± 3mm
driving system	The transmission control adopts a servo drive motor, which is controlled through a servo controller and the speed is continuously adjustable
Conveyor structure	The roller drive device is driven by a servo motor through a sprocket and chain, which drives the driving shaft and drives each roller rod through gears between the driving shaft and each roller rod, thereby driving the transmission of products
photoelectric control	Optoelectronics at entrance and exit

5,Atmosphere system

Atmosphere control system		Including intake air pipes, exhaust system
Air pipes: The range of the auxiliary flow meter is 10-95L/min, while the range of the other flow meters is 20-190L/min
A	Entrance  gas curtain		Prevent external air from entering the furnace
B	Rubber discharge gas intake		Used for supplementing normal fresh air in the heating section
C	Venturi Exhaust		Air inlet is used for auxiliary exhaust, and variable diameter venturi is used for chimney to control air displacement by adjusting extraction pressure
D	Firing gas intake		Used to control the airflow direction in the furnace and prevent rubber pollution during product firing in high-temperature areas
E	Exit gas curtain		Prevent external air from entering the furnace
Exhaust system			One exhaust chimney is installed in front of the temperature zone, and an exhaust hood is installed above the inlet section of the furnace

6,Safety protection:

Stop button.	Entrance and exit plates are equipped with a stop button. After pressing it, the transmission stops running
Alarm indication	Overtemperature, temperature deviation, servo alarm, thermocouple broken sound and light alarm, discharge alarm

7,Temperature control system:

Temperature measurement	Each control and detection point is measured independently by K type thermocouple
Control instrument	Use of intelligent temperature controller, with PID parameter auto tuning, high temperature upper limit alarm, thermocouple failure and other protective alarm functions.
Heating control	The heating part is supplied by several AC contactors in groups to reduce the instantaneous current impact of the equipment on the power grid.
Control mode	Solid-state relay zero crossing triggering mode
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
Computer Control System	DCS (distributed control system) control system is adopted
	Lower single loop intelligent instrument control, upper industrial control computer monitoring
	Friendly man-machine interface, multiple program storage, convenient for users to edit and call
	Real-time temperature and alarm record, data saving and printing.
	It also can provide the temperature calibration function in the chamber for adjusting process requirement.