Nitrogen Atmosphere Nocolok Continuous Brazing Furnace for Aluminum Car Radiator
Product Details
| Customization: | Available |
|---|---|
| After-sales Service: | Available |
| Warranty: | 1 Year |
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Year of Establishment
2004-08-25
Number of Employees
12
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Basic Info.
- Model NO.
- QHL-0.8/10
- General Outline Dimensions
- 4500(L)X1450(W)X2750(H)Mm
- Effective Width of Belt Conveyor
- W1000mm
- Max. Opening Dimension of The Unit
- 1100(L)×400(H)Mm
- Variable Speed Range of The Belt Conveyo
- 100mm~1000mm/Min, Controlled by an Inverter
- Power of Drive Motor
- N=0.75kw
- Total Weight of The Unit
- 1500kg
- Outline Dimensions
- 2700(L)X1450(W)X1864(H)Mm
- Outline Dimensiono of Flux Storage Tank
- 1070mm
- Mixing Motor of Flux Storage Tank
- 0.25kw
- Heat Source of The Drying Durnace
- Electric Heating
- Transport Package
- Bare in Container
- Specification
- ISO
- Trademark
- Zhenhuan
- Origin
- China
- Production Capacity
- 10 Sets Per Year
Product Description
I. Description of equipment: Continuous Nitrogen shielded Nocolok aluminum radiator brazing furnace
II. Application of aluminum radiator brazing furnace:
This line is designed for brazing aluminum heat exchanger cores by using non-corrosive flux (Nocolok Flux) under Nitrogen gas shield protection.
Our design is advanced, state-of-the-act, mature, wear well, environmentally-friendly.
Production flow: loading workpiece → flux spraying → drying → going through front curtain room (with nitrogen) → brazing (with nitrogen) → slag removing (nitrogen pre-heating) → going through static cooling room → going through rear curtain room (with nitrogen) → going through compulsive air cooling room → manual taking off cores from belt.
III. Composition of alumium radiator brazing furnace
The complete system mainly includes four sections: round-design flux spraying room, drying oven, brazing oven and control system.
- Degreasing or cleaning section (optional)
- Continuous flux spraying section (including flux mixing & feeding)
- Drying oven and its driving unit
- Front-curtain room of brazing section
- Brazing section & its driving unit
- Slag-removal room
- Static cooling room
- Rear-curtain room of brazing section
- Compulsive cooling room
- Electric control system
- Water & nitrogen supplying device
IV Main feature description:
4.1 Flux spraying section
- Whole body is made from stainless steel 304 and designed in reinforced structure, assuring long-life faultless serving.
- System can spray fluxes to core section and header plates accurately.
- Spraying nozzle is easily demountable.
- Round-cylinder design assures non-piling-up during fluxes collecting.
- A manual spraying section is added on exit of this spraying room, for partial increasing flux.
- Height of high-pressure fan blade is adjustable for better removing excess flux.
- One unit filter is provided in flux recycling system to avoid foreign objects damaging spraying pump.
4.2 Drying oven
- U-shape stainless steel tubular heating elements are mounted on both sidewalls of the oven, better radiating result.
- Internal surface and wind scooper are made from SS304, 1.5mm thick
- Transmitting belt is made from SS304, inverter control
- A cleaning & overhauling entrance is provided on the body.
4.3 Brazing oven
- Full oven is insulated by high-performance fiberglass wool, good thermal insulation. Temperature rising time (from ambient to 630°C) is only 2.5 hours. Heating consumption during brazing is less than 60% of installed power.
- Muff body is made from SS 304 and 316L, one 10m long plate folded, only two welding seams, very small deformation because of welding stress, very small deformation during working.
- Four sectional temperature control, high control precision (±1ºC); Temperature evenness in same section is within ±3ºC.
- Slag-removing room is equipped with separate Nitrogen pre-heating system which can heat nitrogen gas to 300ºC.
4.4 Temperature control system
- PID control by SHIMADEN original from Japan
V Technical data of aluminum radiator brazing fruance
| Item | Data |
| Belt center height | 850mm |
| Effective belt width | 800mm |
| Effective working height | 200mm (above belt) |
| Belt speed | 300~1000mm/min (inverter control adjustable) |
| Drying oven effective size | 7000 x 850 x 200mm (L x W x H) |
| Brazing oven effective size | 10000 x 850 x 200mm (L x W x H) |
| Total length | 39.2m |
| Total heating power | 410kW (drying 120kW + brazing 320kW) |
| Pure nitrogen gas supplying | 200m3/h (real consumption 80~100m3/h) |
| Applicable aluminum radiator core | Max. Width 700mm, length no limited |
| Production speed | 60~90 pieces/hour, typical 550 x 700mm cores |
VI Technical specifications of aluminum radiator brazing furance
6.1 Flux spraying device (round cylinder shape)
A) Function
- Even coating fluxes, no missing area
- Excess fluxes can be flowed away
- Equipped with manual coating area
- Equipped with fluxes recycling system
- Round-cylinder design for better recycling, less residual, good for wind circulating inside
B) Main data
| Item | Data |
| Belt center height | 850mm |
| Effective belt width | 850mm |
| Effective vertical height above belt | 200mm |
| Transmitting chain | SUS304, horseshoe chain |
| Length of spraying room | 700mm |
| Length of blowing room | 800mm |
| Length of front entrance | 1500mm |
| Length of manual spraying area | 1500mm |
C1- Flux spraying device
- Stainless steel body & frame; both sides with observing window, good seal; soft PVC curtain.
- Pneumatic diaphragm pump from Taiwan PUMPSMITH, two pieces, one for spraying, one for recycling
- Fan-shaped nozzles, quick detachable type, 9 pieces
- Belt transmitting speed is inverter control, adjustable for different products
C2- Air blowing device
- Mounted 15° on top of cores
- Air flow: 40m/s, 550m3/h, 430mbar, blowing mouth width 1mm
- Height above cores: 50~150mm, adjustable
- Fan motor power: 7.5kW
C3- Flux tanks, two sets
- SUS 304, Φ900 x 600mm height
- Filter mesh is equipped for recycling
- Tank is equipped with wheels, movable
6.2 Drying oven
1) Main data
-External surface and internal surface are steel plate welded structure
- Each section has overhauling & slag-removing hole
- Insulation material is aluminum silicate, completely filled between external and internal surface, solid structure.
| Item | Data |
| Belt center height | 850mm |
| Normal working temperature | 200~250ºC |
| Max. Heating temperature | 350ºC |
| Oven temperature evenness | ±5ºC |
| Oven channel size | 850 x 250mm (effective 800x200mm) |
| Temperature control area | Two (front 70kW, rear 50kW) |
| Temperature control method | PID |
| Heating element | U-shape stainless steel tubular heater |
| Transmitting belt | SUS304 wires, Φ3mm + Φ 3.5mm |
| Total length | 10.5m (transmitting 1.8m + drying 7.7m + passive 1m) |
-External surface and internal surface are steel plate welded structure
- Each section has overhauling & slag-removing hole
- One vortex blowing fun is mounted on top of oven, driving by 3kW SIEMENS motor; Wind speed on the surface of belt is not less than 4m/s.
- Fan blades, axle and cover are all stainless steel.
- Fan is designed in maintenance-convenient structure, convenient for adding grease and changing bearing.
- ON/OFF of fan is interlocked with heating. Only fan is ON and heating elements become dry, heating can be started, thus ensuring long life of heating elements.
- One exhausting fan is equipped for exhausting moisture inside the oven.
- Oven external surface temperature rise is not more than ambient + 20ºC
3) Driving device
- Stainless steel transmitting belt
- Delta inverter for speed control
- Belt speed can be preset on HMI
6.3 Front-curtain Room
| Item | Data |
| Total length | 1500mm |
| Curtain material | 0.05mm SS316L foil + 0.18mm fabric |
| Nitrogen inlet | one |
| Door damper max. Open height | 200mm |
| Damper elevating | manual |
| Room insulation thickness | 50mm |
A) Main data
| Item | Data |
| Total length | 10m |
| Effective size | 800mm (belt width) x 200mm (height above belt) |
| Max. temperature | 700ºC |
| Working temperature | 600~650ºC |
| Temperature evenness | ±3ºC |
| Temperature control | 5 sections, 10 zones, PID |
| Designing power | 320kW |
| Heating method | Electric heating wire (0Cr25Al5) |
| Transmitting belt | SUS316L wire, Φ3mm + Φ 3.5mm |
| Max. allowable oxygen content | 50PPM |
- External surface: steel plate welded structure
- All walls are insulated by ceramic fiber pinprick flat, external surface temperature rise is not more than ambient temperature + 20ºC.
- Heating elements: mounted outside of muff hearth, easy changeable
- Muff hearth: SUS 316L 8mm whole-length folded into two parts and then welded by TIG first and arc welded later.
- On bottom of muff hearth, there is stainless steel towing rail for hearth sliding because of expanding & contracting.
- There are two nitrogen pipelines and one thermal couple inside the muff hearth.
- There is a separate pipeline on muff hearth for internal atmosphere measurement.
- There are total 10 thermal couples mounted on outside wall of muff hearth.
- Temperature control in 5 sections, both top and bottom, quick responding speed, no dead zone
- Electric heating wires can be drawn out from sides for changing or maintaining
6.5 Slag-removing room
A) Main data
| Item | Data |
| Room length | 1300mm |
| Nitrogen pre-heater | One unit |
| Internal material | 316L |
| Max. Nitrogen flow | 120m3/h |
| Belt supporting rack | ≥Φ16mm SS pipe |
- Flux in brazing section is melt. When coming to less-temperature slag-removing room, flux will coagulate and drop to bottom of this room.
- Nitrogen pipeline is provided inside this room. Nitrogen gas for brazing atmosphere protection can be pre-heated through heat exchanger here. Nitrogen can be heated to 300ºC, thus saves electric consumption.
6.6 Static cooling room
| Item | Data |
| Total length | 3200mm |
| Internal surface material | SUS304, 6mm thick |
| Air cooling fan | Flow rate ≥20000m3/h |
| Temperature of workpiece at exit | ≤200ºC |
- Side fences are designed into door type, openable for maintenance.
- Nitrogen flow meter and distributor are mounted in this section.
6.7 Rear curtain room
| Item | Data |
| Total length | 1500mm |
| Curtain material | 0.05mm SS316L foil + 0.18mm fabric |
| Nitrogen inlet | one |
| Door damper max. Open height | 200mm |
| Damper elevating | manual |
| Room insulation thickness | 50mm |
| Item | Data |
| Total length | 3000mm |
| Wind curtain | PVC |
| Blowing fan | two |
| Exhausting fan | two |
| Temperature of workpiece at exit | Not more than 15ºC above ambient temperature |
- Driving motor is inverter control, Delta brand from Taiwan, speed adjustable
- Under transmitting rubber roller, there is one steel wire brush for removing flux adhered on the belt.
- Belt tension can be adjusted manually.
6.10 Air pipeline & Nitrogen gas pipeline
- Air pipeline: one exhausting fan for drying section, one for brazing section, four for air cooling section
- Nitrogen gas flow is monitored by several flow meters. Nitrogen gas can be filled to desired section directly when necessary.
- Nitrogen pipeline is equipped with electric-contact pressure meter which alarms when pressure is low.
- Nitrogen gas supply requirement: pressure 0.3MPa, flow 200m3/h, purity 99.999%.
- Impurity: O2<10.0ppm; H2<0.5ppm; Ar<3.9ppm; H2O<0.2ppm; CO<0.5ppm; CO2<0.2ppm; Others<0.2ppm.
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