Welding preheating and post-heating is an important application
field of induction heating.
The welding of steel after preheating can reduce the stress,improve
the welding strength,and
prevent cracking.Post-heating is used for
dehydrogenation,annealing,tempering,normalizing
and other processes.
Induction heating is used for welding preheating and
post-heating.It has the characteristics of
good controllability,can realize complex process
program,non-contact heating,wide
adaptability,high efficiency,and energy density,and can realize
on-line heating.
Induction heater/induction heating machine is designed and manufactured by Canroon used for
pipes PWHT/post weld heat treatment (DHT dehydrogenation heat treatment, ISR intermediate stress
relief), widely applied and welcomed by oil&gas piping,
offshore platform construction, and power plant
construction & repair. portable one has 5kw, 10kw, It is small in
size, easy to take, and convenient to operate.
Suitable pipes size: When applied in pipe post weld heat treatment/PWHT, 5kw induction heater is suitable
for pipe size with diameter of less than 200mm and thickness of
less than 25mm, 10kw induction heater is
suitable for pipe size with diameter of 200-400mm and thickness of
less than 30mm, heating temperature
should be lower than 788℃, fast and uniform heating.
Besides, application of welding preheat, joint anti-corrosion
coating and shrink fitting are also very efficient.
Details of Canroon portable induction heater/induction heating
machine:
Front:
Technical parameters of induction heater/induction heating machine
for PWHT:
| Model | Temperature | Input | Output | Dimension | Weight |
| CR2000-005B-12SF | 788℃ | Power:5KVA Voltage:Single 220-240V Frequency:50-60Hz Current:20.8-22.7A | Power:4.5kW (duty cycle 100%) Frequency:5-60KHz | W:262.4MM H:304MM D:545MM
|
22kg
|
CR2000-005B-14TF
| 788℃ | Power:5KVA Voltage:three-phase /400V(±20%) Frequency:50-60Hz Current: 6-9A | Power:4.5kW (duty cycle 100%) Frequency:3-35KHz |
CR2000-010B-14TF
| 788℃ | Power:10KVA Voltage:three-phase /400V(±20%) Frequency:50-60Hz Current: 12-18A
| Power:9kW (duty cycle 100%) Frequency:3-35KHz |
CR2000-015B-14TF | 788℃ | Power:15KVA Voltage:three-phase /400V(±20%) Frequency:50-60Hz Current: 18-27A | Power:13.5kW (duty cycle 100%) Frequency:3-15KHz |
CR2000-020B-14TF | 788℃ | Power:20KVA Voltage:three-phase /400V(±20%) Frequency:50-60Hz Current: 24-36A | Power:18kW (duty cycle 100%) Frequency:3-15KHz |
Application details of induction heater/induction heating machine
in pipes PWHT(post weld heat treatment):
Accessories of induction heating machine:
We offer multiple accessaries like thermocouple, thermocouple welding machine, digital
temperature-recorder, remote
switchgear, output extension cable, insulation blanket, etc. Complete solution saves your time and ensures you to start
work soon after received our delivery.
According to the workpiece and process requirements to customize a
variety of tooling inductors including:
Blanket Inductor,C-type Inductor,Split-core / Clamp Inductor,Plate
/ Flat Inductor,Ring Inductor and so on.
Features of portable induction heating machine:
We have display board to show working parameters, and temperature
recorder can feedback PWHT curve, you can print it.
The interface offers two basic control mode to choose including temperature control and power control. The former one has 4 modes of
preheat, bake-out, PWHT, custom. The last one has 2 modes ofconstant power and power VS time. Each mode offers different
parameters to set. Thus brings the benefit of wide applicability
and precise control.
Fault codes will display and be recorded for reference, and system
will respond with protection action like shutdown once fault
occurs such as open-loop output or short out.
Due to modular design, the maintance will be easy and low-cost.
Once fault occurs, CR2000 will act with display of fault code,
which was detailed explained in the manual book.
This uniquely energy-efficient process converts up to 90% of the
expended energy into useful heat, and time-to-temperature is faster
than conventional processes due to the method of applying heat,
reducing cycle time.
The heat is induced within the part itself by alternating
electrical current, thus uniform temperature throughout the heating
zone is realized.
