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Capacity (kg): 300
Rated temperature of molten aluminum (℃): 660
Combustion capacity (kcal): 50000
Heating capacity (℃ / h): 40
Insulation energy consumption: 1.8Nm3/H
Oxygen content in furnace: Less than 5%
Liquid level change: 175mm
Fuel type: natural gas; calorific value: 8600kcal / Nm3; gas supply pressure: 5kpa
Rated temperature of molten gas: ± 850 ℃
Temperature control accuracy: ± 5 ℃
Power supply: 380V, 50Hz, 3-phase 5-wire system
1.Aluminum alloy pool type gas holding furnace
Pool type gas holding furnace is mainly applicable to the insulation
of non-ferrous metal solution, and can be used in die casting machine,
centrifugal casting, gravity casting, precision casting and other processes.
The product consists of furnace body, combustion system and
electrical control box. The flat flame burning system is installed
on the top of the furnace, which directly radiates the aluminum
alloy liquid with a high efficiency. The furnace is easy to maintain
and move.
Gas fired pool type holding furnace is an aluminum alloy holding
furnace which can recover heat and pursue the limit of energy saving.
1.Low energy consumption burner with heat exchanger is adopted,
which can effectively use heat exhaust.
2.High quality imported flat flame burner is adopted, with large flame
radiation area and high thermal efficiency. The temperature of molten
aluminum can be controlled within ± 3 ℃, and the oxygen content in
the atmosphere in the furnace is less than 5%, which can effectively
prevent the generation of oxides in the furnace.
3.Due to its unique thermal insulation structure, it can effectively
reduce surface heat dissipation, reduce ambient temperature and
improve thermal efficiency.
4.The gas aluminum holding furnace lining is made of combined mineral high-strength
non stick aluminum refractory, with a service life of more than 5
years (warranty of three years).
5.Adopt special combustion system and combustion supporting
fan to realize low noise operation
3.Furnace body structure
1. Steel structure:
The gas fired die casting holding furnace shell is formed by splicing and
welding of steel plate and section steel, and the material around the furnace door is cast
iron.The whole furnace has lifting function, which is easy to match
with the equipment.
2. Composition of furnace lining:
The molten pool is formed by one-time castable. This material
is a casting material, which has the characteristics of high strength,
no aluminum adhesion, long service life and so on.(compressive
strength: 140MPa above 110 ℃, while the linear change rate is only 0.1%).
The furnace top and the upper end of the furnace wall use the imported
Youre nano thermal insulation layer. The temperature rise of furnace
wall is less than 30 degrees.
3. Combustion system:
3.1 imported gas burner shall be selectedSimple operation and maintenance,
long service life, temperature control, automatic ignition and fire eye
monitoring. When the set temperature is reached, the burner stops
combustion. When the temperature in the furnace is lower than the lower limit
of the set temperature, the burner enters the combustion port for automatic
combustion, automatic ignition and flame rod detection. After the operation
preparation of the holding furnace is completed, the blast purging is carried
out first, and then the automatic ignition is carried out for low combustion.
After the flame is detected by the flame detection rod, the burner will
automatically and gradually enter the high combustion state. At the same
time, the flame detection rod always monitors the combustion state of the
burner.
3.2 the safety system of the holding furnace can immediately cut off the
main burner and ignition burner and interrupt the fuel supply when the
burner is not completely burned or extinguished.An interlocking device
is set between the pressure switches of fuel and combustion supporting
air pipelines, so that the shut-off valve of fuel supply can be closed
through the response of the interlocking device in case of any abnormal
combustion conditions.Melt temperature control: the temperature control
is to automatically adjust the speed of the combustion fan through the
frequency converter of the combustion fan according to the aluminum
liquid temperature of the holding furnace, so as to adjust the combustion
volume of the burner. The method is PID regulation.The upper temperature
limit is set by heating the atmosphere temperature in the cover to control
the atmosphere temperature.
3.3 main components of combustion system
1) Main burner head 1 # Krom
2) Main fire solenoid valve 1 # Honeywell
3) 1 # Honeywell
4) Wind pressure switch 1 # Honeywell
5) Pressure reducing valve 1 # Fisher
6) Gas pressure switch 1 # Honeywell
7) Combustion controller 1 # Honeywell
8) Combustion supporting fan 1 # domestic
9) temperature controller 2 # Taisi
3.4.Schneider and Chint brands are used for low-voltage
electrical components.
4. Temperature control
Automatic temperature control flame switch, over temperature alarm,
flameout protection, etc
1. Liquid aluminum temperature control
2. temperature temperature control
3 .After the preparation of the furnace is completed, turn on the switch,
first use the blower to purge the aluminum holding furnace for die casting process,
set the control temperature, turn on the solenoid valve of the gas pipeline at the same time,
and the gas is injected into the furnace for automatic ignition and combustion.
5.Scope of user fortification:
1. The gas pipeline shall be connected to the furnace body as required.
2. Electrical wiring works, from control cabinet to furnace body wiring,
are provided by our company.
The wiring works of power supply and standby power supply are within
the scope of users.The power supply is 380V ± 10%, 50Hz.
3. Aluminum die casting furnace positioning works
(also coordinated by both parties).
6. Contractor's works:
1. Fabrication of furnace body
2.Site foundation works
3. fabrication of relevant accessories of furnace
4. production of control system
5. Painting fortification
6. installation and commissioning works
7.Site operator training fortification
8.Equipment transportation fortification
7. Standard configuration
1. one furnace body
2. One set of control system
3.Two temperature measuring thermo couples (one for measuring liquid
aluminum temperature and one for furnace temperature, among which
the thermo couple for measuring liquid aluminum temperature is
equipped with silicon nit ride protective sleeve)
4.One set of combustion system
5.Several vulnerable materials (2 sets of ignition rods)
6.One copy of operation manual
