Complaint
| Typical application | It is mainly used for high temperature firing and heat treatment of copper paste resistance, laminated capacitor and other similar products. |
| 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 | |||
| 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) |
| 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 |
| 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:
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 | |||
| Cooling structure | Water jacket |
| Cooling mode | Water cooling |
| 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 |
| 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 |
