ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ
Appication: Aluminum Die Casting Process
Melting pool capacity: 500KG (liquid density 2.4g/cm3)
Fuel type: natural gas heat value 8600Kcal/m3;
Gas supply pressure: 5Kpa;
Rated working temperature: 660℃ (atmosphere);
Temperature control accuracy: ±3℃;
Power:supply 380V, 50HZ, 3P
Natural gas consumption: about 2.5m3/h;
Oxygen content inside furnace: less than 5%;
1. General Introduction
The gas fired pool type aluminum holding furnace is an aluminum
alloy liquid holding furnace which could recycle the heat of the fume
and saves energy consumption greatly.
The furnace for die casting process adopts the high quality burner
with a large flame radiation size and a high heat efficiency. The aluminum
liquid temperature is kept at an accuracy of ±5℃. The furnace inside
oxygen content is less than 5% which effective prevents generation of oxides.
The die casting holding furnace is designed with the special heat insulation
structure which could effectively reduce surface heat loss, reduce
environment temperature rise, and improve heat efficiency.
The electric aluminum holding furnace wall is lined with high alumina refractory bricks which have a service life of more than 3 years.
3. Furnace Structure
3.1 Furnace shell
The furnace shell is made of steel plate and sectional steel. The door edge is made
of cast iron material.
3.2 Furnace lining
The melting pool is built with high alumina bricks which have the features of high strength,
free aluminum-sticking, and long life. (compression strength: 140Mpa when temperature
is above 110℃; linear rate: only 0.1%). The heat insulation layer used is of Grade One
silicate aluminum fiber board.
3.3 Burning system:
The burning system is easy in operation, and has a long service life. The furnace has
the functions of automatic temperature control, automatic ignition, and flame detection.
When the gas fired aluminum holding furnace reaches the set temperature, the burner
stops working. When the furnace temperature is lower than the set lower temperature
limit, the burner enters the burner port and works automatically. The burner ignites
automatically with a flame detection device. When the pool type aluminum holding
furnace is ready to work, the user should first turn on the air blower to purge the hearth.
The burner ignites automatically after purging finished and works with a small flame.
The flame detection rod detects the flame, and the burner will work with a big flame.
The flame detection rod monitors the burning status of the burner all the time.
The furnace burning system is also set with safety measures. If there are situations
such as incomplete burning or flame-out, the control system cuts off main burner
and ignition burner to stop the fuel supply. There is also the interlock device between
the gas pipeline and air pipeline. If there is any abnormal burning situation, the
interlock device cuts off the fuel supply. The liquid aluminum temperature is controlled
through PID regulation. The fan inverter automatically adjusts the fan rotation speed
so as to regulate the gas flow. The die casting holding furnace has set the
atmosphere temperature upper limit value.
3.4 discharging hole
The aluminum liquid is discharged with the help of manual operation. During the liquid
discharging process, there should be no leak problem.
3.5 Temperature control
The holding furnace for aluminum is set with control functions such as the automatic
flame switches, the over temperature alarm, the flame-out protection, etc.
Aluminum liquid temperature control
Hearth temperature control
Safety device and automatic control system
When the aluminum smelting furnace starts to work, the user should first switch on
the power supply and turn on the blower to purge the furnace. Set the furnace
temperature and open the solenoid valve of the gas pipeline. The burner ignites
when the natural gas enters the hearth.
3.6 hydraulic tilting system
The furnace body is designed with tilting function. It is mainly comprised of the
hydraulic cylinder, control valves, and pipeline.
