Resistance annealing machine
This machine anneals (thermally straightens) stainless steel wires
from 0.30 - 0.50mm).
FUNCTIONAL DESCRIPTION:
- The machine enables heating by direct passage of electric current
through the wire
through the wire (resistance annealing process).
The device is equipped with 4 special power stabilisers for
regulation, in combination
with an optical pyrometer for temperature control and
thermoregulation.
- The simultaneous heating of the 4 wires takes place in a chamber
saturated with inert gas
by the electrical contact transmitted by two conductive V-shaped discs
(short-circuit rollers).
are transmitted. Two further V-shaped discs have the task of guiding
the wires.
- The system can be integrated into an existing automatic Scholl disc
system, which, however, is not
not included in the scope of delivery of the machine. Alternatively,
the straightened wire can also be
be placed on a spool by the customer.
OBJECTIVE:
Raw material (input): Steel wire, stainless steel wire of grades
1.4301, 1.4310 and 1.4401
Dimensional range Ø 0.25 - 0.50 mm with a strength of up to 2400
N/mm².
Finished material (output): material annealed/tempered at 400 - 650
°C with a strength of up to 2200 N/mm².
strength up to 2200 N/mm².
Machine data:
- Speed: 75 - 80 m/min
- Temperature range. 400 - 650 °C,
- 4 wires simultaneously, each with a temperature gauge (movable)
- Shielding gas: In the annealing chamber, 95/5 95%N2/5%H2 forming
gas, nitrogen gas.
Cooling: Water-cooled tubes
ELECTRICAL EQUIPMENT:
consisting of an electrical main switch cabinet with:
- Main switch with resettable release coil.
- Transformer for services and protective fuses for all voltages
used.
- Auxiliary relay for general controls.
- Limit switch for door opening and active phase signals.
- Connection terminals and various accessories.
- PLC cards and modules.
- Fuses for circuit protection.
- Stabilisation of the input voltage with a maximum tolerance of
±7%
- Display monitor and keypad for entering and saving all heat
treatment parameters,
- for displaying machine cycle/alarm messages and inputs for manual
control in Italian and German.
manual control in Italian and German
- No. 4 power stabilisers and setting modules.
- Wall-mounted air conditioner to keep the room temperature below
30°C.
- User-friendly design, easy access for inspection and maintenance of
the
inspection and maintenance of the enclosure area.
- Labelling of all electrical components,
Annealing chamber
Consists of the following components:
- Electrically welded steel machine frame with subsequent heat
treatment for stress relief and adjustable levelling feet.
stress relief and adjustable levelling feet.
- Gas-tight annealing chamber with integrated steel discs provided
with a V-groove U5158834 for each annealing chamber.
annealing chamber 4 discs for wire guidance and the 4 short-circuit
rollers for current transmission.
- In addition, there are 4 encoders in the annealing chamber at the
wire inlet to monitor the wire speed.
wire speed.
- Glass tubes are fitted between the annealing chambers to extend the
annealing section.
Connection for feeding in the inert gas. The gas is fed into the
system from an external tank
generation system (both not included in the scope of delivery).
- The system is equipped with a gas solenoid valve, which measures the
flow rate and the gas outlet pressure
gas outlet pressure and a saturation control device for the annealing
chamber.
- 1 support frame for the optical pyrometer.
- Metal cooling tubes are used to cool the wires, designed for a
circulating water cooling system.
circulating water cooling system
No.1 OPTICAL PYROMETER:
High-precision digital optical 2-colour pyrometer for reading and
displaying the treatment temperatures
from the wires at the points where maximum heating is achieved and
with a laser targeting system.
aiming system.
A protective housing is not included in the scope of delivery.
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