Atmosphere Furnace for Copper Paste Resistance with Computer Control

• After-sales Service: 12 Months
• Warranty: 12 Months
• Type: Copper Paste Firing Equipment
• Certification: CE, ISO
• Structure: Horizontal Type
• Brand: Hengli
• Model NO.: HSA5208-0910ZNO
• Maximum Temperature: 900c
• Heating Element: Heating Board
• Number of Temperature Zones: 9 Zones
• Temperature Uniformity: +-2c
• Transport Package: Wooden Box Iron Bracket
• Specification: 12610*1500*1350mm
• Trademark: HENGLI
• Origin: China
• HS Code: 8514390090
• Production Capacity: 800 Sets/Year

Product Description

1. Typical application:

Typical application

It is mainly used for high temperature firing and heat treatment of copper paste resistance, laminated capacitor and other similar products.

2. Furnace specification and structure:

Code	Name		Length	Note
A	Total length		12610mm
B	Load table		600mm
C	Furnace frame		11410mm
D	Entrance vestibule part		460mm	Including air curtain
E	Entrance insulation part		150mm	Ceramic fiber insulation
F	Heating part		4050mm	9 temperature zones,the length of each zone is 450 mm, and power of 1-4 zone is 14 kW each, the power of 5-9 zone is 12 kW each
G	Free cooling part		600mm	No heating element, thermal insulation material
H	Exit insulation part		150mm	Thermal insulation transition of ceramic fiber material
I	Natural cooling section		300mm
J	Water cooling section		5700mm	Cooling water jacket, The water flows in from the bottom to the top, the flow rate is adjustable, and the water temperature is detected at one point, in which the water jacket in Section 1 flows in and out separately
L	Equipment height		1350mm
K	Equipment operation panel position
Chamber		Use sub chamber and mother chamber and materialis SUS310S-t6. The passing height of the product is 80 mm
Furnace weight		About 6000kg
Effective dimension of furnace		520*80mm
Dimensions		12610×1500×1350mm(L×W×H), excluding foundation, chimney and indicator light
Appearance color		Outside panel uses high temperature spraying coating and off-white color. RAL7035

3. Thermal system:

Rated temperature	850ºC
Maximum temperature	900ºC
Heating element	FEC heating board
Heating power	116kW
Heat preservation power of empty furnace	≤40kW
Number of temperature zones	9 zones
Temperature control points	18  points (Each temperature is controlled by upper and lower points, and each heating plate can be output in proportion to the left, middle and right)
Thermocouple	K type
Surface temperature rise	< 35 ºC (RT+35ºC)
Temperature control stability	±1ºC
Temperature uniformity	± 2 ºC (constant temperature zone)

4. Transmission system:

Belt width	520mm
Belt material	SUS310S
Belt specification	B301015
Maximum load	80kg / m2 (excluding belt  weight)
Transmission mode	Friction drive with large wrap angle
Speed range	40 ~ 200mm/min, typical belt speed 90mm/min, variable frequency stepless speed regulation
Drive system	The drive control adopts frequency converter to drive the motor, which is controlled by reducer, and the speed is continuously adjustable
Transmission structure	Belt 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.
Belt cleaning mode	Ultrasonic cleaning machine timing automatic cleaning, with drying

5. Atmosphere system:

Atmosphere control system			Including nitrogen gas pipes, oxygen pipes, air gas pipes, detection gas pipe, exhaust system, nitrogen pipe and detection pipe
Gas inlet pipe: 11 channels of  nitrogen are introduced and controlled by rotameter. The measuring range of each channel is 24~240L/min 2. 1 channels of  air are introduced and controlled by mass flow meter (MFC). The measuring range is 0~500mL/min. 3. The auxiliary exhaust compressed air is 4 channels, controlled by float flowmeter, with a range of 12-120L/min. The actual pumping pressure is displayed by the differential pressure gauge
Code	Name			Explain
A	Entrance curtains			To prevent external air from entering the furnace, the inlet air curtain is divided into two parts, and the air volume of the two parts can be adjusted
B	First temperature zone gas inlet			It is used for normal fresh nitrogen supplement in the first temperature zone
C	Second temperature zone gas inlet			It is used for normal fresh nitrogen supplement in the second temperature zone, and  appropriate amount of oxygen can be mixed according to the process requirements. (this air inlet point can be filled with air at the same time, and the flow can be controlled through the mass flowmeter)
D	Third temperature zone gas inlet			It is used for normal fresh nitrogen supplement in the third temperature zone
E	Fourth temperature zone gas inlet			It is used for normal fresh nitrogen supplement in the fourth temperature zone
F	High temperature gas inlet			It is used to feed nitrogen into the high-temperature area to form a certain nitrogen curtain
G	Free cooling gas inlet			It is used to feed nitrogen into the high-temperature area to form a certain nitrogen curtain
H	Cooling gas inlet 1			It is used to control the gas flow direction in the chamber and prevent the resin from polluting the product firing in the high temperature zone
I	Cooling gas inlet 2			It is used to control the gas flow direction in the chamber and prevent the resin from polluting the product firing in the high temperature zone
J	Cooling gas inlet 3			It is used to control the gas flow direction in the chamber and prevent the resin from polluting the product firing in the high temperature zone
K	Exit curtains			Prevent outside air from entering the furnace
1	Auxiliary exhaust gas inlet in the first temperature zone			Compressed air is used to assist the exhaust, and a variable diameter venturi is installed at the top. The exhaust volume is controlled by the flow meter
2	Auxiliary exhaust gas inlet in the second temperature zone			Compressed air is used to assist the exhaust, and a variable diameter venturi is installed at the top. The exhaust volume is controlled by the flow meter
3	Auxiliary exhaust gas inlet in the third temperature zone			Compressed air is used to assist the exhaust, and a variable diameter venturi is installed at the top. The exhaust volume is controlled by the flow meter
4	Auxiliary exhaust gas inlet in the fourth temperature zone			Compressed air is used to assist the exhaust, and a variable diameter venturi is installed at the top. The exhaust volume is controlled by the flow meter
Detection gas pipe: equipped with two oxygen analyzers, switched by solenoid valve
Gas source		Oxygen content ≤ 5ppm
Heating zone		Oxygen content :25ppm-250ppm ,Adjustable range
High temp zone		Oxygen content ≤ 10ppm+ oxygen content of gas source
Cooling zone		Oxygen content ≤10ppm+oxygen content of gas source
Exhaust system		4 exhaust chimneys are set in the pre-heating section

6. Cooling system:

Cooling structure	Water jacket
Cooling mode	Water cooling

7. Safety protection:

Stop button	One stop button is set at each end plate of the inlet and outlet. After pressing the button, the belt stops running
Alarm indication	Over temperature, temperature deviation, belt slip, over load, thermocouple broken, low pressure, high pressure , oxygen content sound and light alarm
Safe temperature rise rate	≤3ºC/min

8. Temperature control system:

Temperature measuring	Use K type thermocouple independent measuring and control on the temperature control point of each zone.
Control instrument	It is controlled by the  temperature module. It has multiple alarm protection functions, such as high temperature upper limit alarm, low temperature lower limit alarm, thermocouple failure indication, etc
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	SCR
Over temperature treatment	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	Use DCS control system,Lower single loop intelligent instrument control, upper industrial control computer monitoring
	Industrial computer can carry out multiple programs saving
	Real-time temperature and alarm record, data saving and printing.
	The computer control system has the function of slope temperature rise, effectively extending the service life of muffle tube
	The furnace temperature calibration function is provided to better fit the process requirements, and the temperature curve can be displayed in real time