ALLIANCE THERMAL ENGINEERS

Bhosari, Pune, Maharashtra

Alliance Thermal Engineers designs & manufactures Electrical Heat Treatment Equipment of various ranges for Preheating & Post Weld Heat Treatment applications of various welded fabrications/ pipe joints etc.
The equipment basically works on the principle of Electrical Resistance Heating method & is very much superior to the conventional wire & bead method, which is now becoming obsolete. Low Voltage of 60V / 80V is utilized for the heating elements. Low voltage system has many advantages over other heating system working on mains supply of 230V.

Various Advantages are:

• It gives more flexibility in operation.
• Avoiding higher voltages on the job, giving total safety to the operator.
• Uniform temperature distribution.
• Optimum heat penetration etc.

Thus, a full Heat Treatment Equipment set shall comprise of:

• Power Source 40 / 50 / 70 / 96 kVA with 3 way, 6 way or 12 way control. These are available in Trolley Type Mobile Unit, ideally suited for construction / erection sites, workshops, power plants etc.
• Low voltage heating elements 60 / 80V Flexible Ceramic Pad Type, available in various sizes They provide heat, through conduction heat transfer for preheat / PWHT of welded joints. The heat conductivity is excellent & electrical strength is high at elevated temperatures. The heating elements can be simply wrapped around the pipes or jobs and secured in position with strips. For pipe joints of different dia. / thk., you can use combination of different sizes of elements of same rating. The element tails are connected to the power source by suitably rated cabling system.
• Cabling system Feed, return, 2 way, 3 way, 4 way splitter cables between Power & the heating elements,
• Temperature measurement & Recording system :
  Temperature Recorder- This is portable unit for recording preheat and post heat temperatures up to 1200 Deg. C.
  Thermocouple wire- is used to measure temperature and monitor the control aids. Thermocouple wire is of nickel chrome / nickel alumel or K-Type, twin 21 / 22 SWG wire asbestos covered and normally supplied in 100 m roll.
  Thermocouple Attachment Unit- is used to attach a thermocouple to the weldmet.
  Fully Automatic Multi Channel Programmers to program the preheating & PWHT cycle, Compensating cables are used to connect each thermocouple to the respective channel of the temperature recorder.
• All spares & accessories for the above.

Different models are available based on clients specific requirements, with Manual or Auto mode of operation.
For bigger heat treatment requirements, Mains operated 230V heating elements like Flexible pads or 4 Bank Channel Elements, Finger Elements are also available.
These equipment are used in all industrial sectors like thermal/hydel Power plants, fertilizer / chemical / refineries / steel & general engineering plants.

FCP Low Voltage Flexible Ceramic Heating Elements.

FCP03 Typical Application of Low Voltage FCPs for Preheating/PWHT of Pipe Weld Joints.

6 Channel Stress Relieving Programmer

FIP Flexible Insulated PreHeaters for Preheating Applications.

Power Source 60 kVA Power Source, 6 Way.