850 Degree Continuous Atmosphere Copper Brazing Furnace for Heaters
Radiators
1. Application
The continuous brazing furnace is mainly used for continuous
brazing production of various silver, copper,
and aluminum parts. The surface of the product is bright after
being treated by the equipment, without
oxidation and decarburization, and the brazing seam is full.The
furnace has the advantages of novel design,
reasonable structure, high energy saving and high heat efficiency,
stable production quality, safe and
convenient use. It is easy to operate and has no industrial
pollution. Advanced temperature control mode,
using intelligent temperature control instrument, intelligent SCR,
Schneider Electric switch.The accuracy
of temperature control is ± 2℃. It is advanced, reliable, practical
and economical.
2. Main Technical Parameters
- Overall dimension of furnace body: 26000*2100*3100mm (L,W,H);
- effective preheating zone: 6500*400*500mm (L,W,H);
2.3 effective heating zone: 4050*400*500mm(L,W,H); 2.4 effective cooling zone: 11600*400*500mm (L,W,H); 2.5 maximum design temperature: 1000 ℃; 2.6 brazing temperature:850 ℃; 2.7 total power: 180kW; 2.8 temperature control area: 9-zone temperature control,
single-phase control heating, convenient parameters setting, and
temperature control accuracy at ± 1℃. 2.9 The continuous copper brazing furnace conveyor belt (100-700mm)
is of stepless speed regulation. The high temperature muffle tank
is made of imported (Sweden 310S) high temperature resistant
stainless steel material pressed and reinforced by ribs. The
thickness of muffle tank steel plate is 8mm and the cold state
pressure is 1.0 MPa. 2.10 High temperature resistance wire (0cr27al7m02) is used as
heating element material, and aluminum oxide tube is used as
resistance wire framework.The heating elements are arranged in a
way that is easy to repair and replace, and the process of
resistance wire replacement does not affect production operation. 2.11 Cooling method: water jacket cooling. The cooling water jacket
is made of high quality boiler plate with thickness of 6 mm. 2.12 High quality K-type high temperature thermal couple is used. 2.13 The electric furnace is equipped with over temperature alarm,
over temperature power-off and other functions. 2.14 The gas path has flow meter display and control, and the inlet
device can adjust the direction of protective gas. 2.15 Mesh belt specification: length 55000 mm, width 360 mm.
Through wire: 4.0mm (310S); weaving wire: 3.0mm(310S). Herringbone
pattern. 2.16 mesh belt speed:100-700mm; 2.17 application:red copper brazing;
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3. Composition
The copper brazing furnace consists of drive system, heating
system, cooling system, control system, ammonia
decomposition gas supply system and ammonia purification
system.Muffle furnace is made of imported high-temperature
resistant stainless steel. The detachable electric heating elements
are installed above and below the muffle tank.
The mesh belt is of frequency conversion and stepless speed
regulation, and the mixed gas decomposed from
liquid ammonia (75% hydrogen and 25% nitrogen) enters into the
furnace to achieve gas protection effect. The
gas direction adjustment device ensures stable atmosphere. After
heat treatment in the furnace, the surface of
the product is bright, no oxidation phenomenon, and the product
consistency is good.
4. Ammonia decomposing device
4.1 ammonia decomposition model: WDL-50
4.2 total power: 70kw;
4.3 rated voltage: 380V, three-phase.
4.4 rated frequency: 50 Hz.
4.5 rated temperature: 950 ℃
4.6 Working temperature: 800 - 850 ℃
4.7 decomposition capacity: 50m 3/h;
4.8 2orking pressure: 0.02-0.04mpa;
4.9 heating power of purifier: 6kW / piece * 2 pieces;
4.10 working temperature of purification unit: normal temperature
4.11 Gas purity:
Purified gas: (75% H2, 25% N2)
Dew point ≤ - 60 ℃
Residual ammonia ≤ 5ppm
4.12 The decomsition device is made of high quality SUS310S high
temperature resistant stainless steel pipe
with a thickness of 4 mm.
4.13 The material of electric heating element of the continuous
copper natural gas heater brazing furnace is
high temperature resistance wire. The heating element is installed
by pulling plug type, which is convenient
for maintenance and replacement. The process of resistance wire
replacement does not affect the production operation.
4.14 The complete decomposition of 1kg liquid ammonia can produce
2.62m3 hydrogen nitrogen gas mixture.
5. Main Components List
| NO. | Item | Brand/Specification |
| 1 | air switch | Tianzheng |
| 2 | ammeter | Tianzheng |
| 3 | voltmeter | Tianzheng |
| 4 | Transformer | Tianzheng |
| 5 | Universal switch | Tianzheng |
| 6 | Contactor | Tianzheng |
| 7 | Intermediate relay | Xinling |
| 8 | Buttons | Tianzheng |
| 9 | Inverter | 3.0KW |
| 10 | Thyristor | West |
| 11 | Thermocouple | Zhaoqing, Guangdong |
| 12 | Intelligent digital display power regulating temperature controller | Yudian, China |
| 13 | Temperature recorder | Yudian, China |
| 14 | Water tank material | Xinyu boiler steel plate, 6mm thick |
| 15 | Heating element of furnace | OCr27a17mo2, Shanghai Shuqing |
| 16 | Aluminum oxide pipe | Jinhuan, Foshan |
| 17 | Furnace lining | Yixing, Jiangsu |
| 18 | Fire resistant fiber roll | Yuntai, Shandong |
| 19 | Furnace shell material | A3 iron plate, 4mm thick, bending forming |
| 20 | Furnace insulation layer | 450 mm thick |
| 21 | Mesh belt running speed | 100 ~ 700cm / min stepless speed regulation. |
| 22 | Furnace muffle tank | Thickness 8mm 310S high temperature resistant stainless steel plate
imported from Sweden |
| 23 | Bearing | Dongguan |
| 24 | Pressure relief valve | Shanghai |
