Customized 185 Degree Celcius Aluminum Alloy Aging Heat Treatment
Furnace
1.Application
Aluminum alloy aging heat treatment resistance furnace is a cycle
operation type resistance furnace, mainly
used for aging treatment of aluminum alloy castings after quenching
treatment, and can also be used for heat
treatment of other workpieces in air below 300℃ .
The furnace has good thermal cycle and relatively uniform
temperature.
The temperature control system uses PID zero-crossing triggered
thyristor and Japanese island meter to control
the temperature. The aging heat treatment furnace has good
stability and adopts paperless recorder to record
temperature and over-temperature alarm for dual control to ensure
that the workpiece does not overheat.
2.Main Technical Parameters
| No. | Item | Technical Parameters |
| 1 | Rated power | 75KW+5% |
| 2 | Rated voltage | 380V Phase: 3P Frequency: 50HZ |
| 3 | Rated temperature | 300 ℃, usually 185℃ |
| 4 | Temperature control method | PID control, thyristor control, Japanese electric meter control,
10.1-inch touch screen control |
| 5 | Number of heating zones | 2 zones |
| 6 | Connection method | Y |
| 7 | Furnace temperature uniformity | ± 5 ℃ |
| 8 | Temperature control accuracy | ± 1 ℃ |
| 9 | Inner dimensions of basket | 1900×1900×1600 mm |
| 10 | Loading capacity | ≤ 10 seconds |
| 11 | Empty furnace heating time | ≤ 0.5 h |
| 12 | Empty furnace power loss | ≤10% |
| 13 | Circulation fan | 2 sets 4KW |
| 14 | Furnace side outer wall temperature | ≤ 30 ℃ |
| 15 | Trolley electric travel motor | ≤ 35 ℃ |
| 16 | Furnace door opening and closing mode | electric lifting
|
3. Structure Introduction
The electric furnace structure consists of furnace body, heating
device, control system and other parts.
3.1 Furnace body
The frame of the furnace heat treatment of metals shell is welded
and formed by section steel, and the outer wall is made
of high-quality cold-rolled steel plate, which has a small thermal
deformation coefficient. The inner lining uses aluminum silicate
refractory fiber needle-punched cotton as insulation and heat
preservation material to reduce the temperature
rise of the furnace wall. The inner wall is closed with stainless
steel plate.
The furnace door and furnace shell are also made of welded steel
frames, the outer wall is also made of cold-rolled
steel plates, and the inner lining is made of aluminum silicate
refractory fiber needle-punched cotton as insulation
and heat preservation material.
The trolley is made of 12/14 channel steel. The materials are
loaded into the basket on the trolley surface using
the workshop crane, and the trolley is driven into the furnace.
Rubber asbestos packing is embedded around the furnace mouth. When
the box type furnace door is closed, it fits
tightly against the rubber asbestos packing at the furnace mouth to
ensure that no heat is dissipated.
3.2 Heating device
The heating element adopts heating tubes, which are arranged on
both sides of the furnace and made of 0Cr25AL5
alloy wire. It has a long service life.
To ensure the stability and uniformity of the heat treat furnace,
the electric resistance furnace is equipped with a ventilator
device
(a complete set is purchased from outside) and an air guide system.
The ventilator device is installed on the top of the furnace body,
and the fan is made of 1Cr18Ni9Ti heat-resistant steel to form a
centrifugal fan blade. The air guide system consists of
an air guide plate and an air shield. The air guide plate is
installed on the top of the furnace and has an air guide groove.
When the fan is turned on, the wind is thrown out from the fan,
blown evenly to the heating elements on both sides of the
furnace through the air guide groove, blown into the furnace
through the air guide port at the bottom of the air shield, and
then sucked into the fan from the air guide port at the bottom of
the fan, and then thrown out... This reciprocating cycle
brings the heat generated by the heater into the furnace, so that
the workpiece is heated evenly.
3.3. Control system
The temperature control system of the aging heat treatment furnace
uses PID zero-crossing trigger thyristor and Japanese Shimaden
smart meter to control temperature. In addition, a paperless
recorder is used to record temperature and over-temperature alarm
is
used to ensure that the workpiece does not overheat.
The mechanical transmission parts of the electric furnace adopt
interlocking control, that is, the power supply of the
ventilator device and the heating element is automatically cut off
after the furnace door is opened. The power supply
of the ventilator device and the heating element can only be
connected after the furnace door is fully closed to prevent
malfunctions and accidents caused by misoperation.
