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Why therelek ?

Over 40 years of established expertise. Over 4500 furnaces, integrated heat treatment systems and solutions delivered so far, worldwide. A distinguished Commercial Heat Treater, with the most stringent quality certifications, an exhaustive process capability range and customer approvals from some of the world's most quality conscious organizations.

Our products and solutions are not only comprehensive, but complete.

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CONTINUOUS HIGH TEMPERATURE FURNACE

Therelek's standard continuous high temperature furnaces operate up to 1800°C. Higher temperature requirements are also encouraged which require process specific design.

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DROP BOTTOM QUENCH SOLUTION TREATMENT FURNACE

DBQ or drop bottom quench solution treatment furnace is primarily used for solutionizing of aluminium parts prior to forming. The requirement is a quick quenching of aluminium parts usually within 5 to 10 seconds so that the material comes to ideal precipitation hardened condition.

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BOGIE HEARTH FURNACE

Our standard bogie hearth furnaces can go up to 1500°C, however any special requirements beyond this can also be taken up with a custom design. High temperature applications include sintering, hardening, annealing and normalizing whereas lower temperature applications include tempering and stress relieving.

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VACUUM FURNACE

Vacuum furnaces are preferred over conventional methods of heat treatment such as salt bath furnaces and controlled atmosphere furnaces due to the advantages it brings - such as prevention of surface oxidation, decarburization and low distortions on work pieces thus resulting in cleaner surfaces, less rework and less post-heat treatment cleaning or corrective operations.

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ROTARY CALCINER

Therelek Engineers designs and manufactures rotary kilns and rotary calciners to the requirement of the end user. Rotary kilns are directly or indirectly heated by gas fired burners, the rotating element being a metallic tube.

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LOW TEMPERATURE AIR CIRCULATION OVEN BATCH TYPE

LTA ovens or low temperature air circulation ovens have a wide area of application from baking ovens to ageing ovens. The ovens are designed with complete inner stainless steel construction for long life.

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CONTINUOUS AIR CIRCULATION FURNACE

Continuous air circulation furnaces or ovens are offered for constant, high production jobs. They are used for drying parts after processing, painting etc. . Also in filter manufacturing industries for pleating setting and curing of filter papers. They can also be used for stress relieving of various metals after forming or welding operations, and hydrogen de-embrittlement (after plating).

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PIT TYPE SEALED RETORT FURNACE

Pit type sealed retort furnaces are of a cylindrical design vertically erected with a positive sealing mechanism on top in order to contain and preserve heat and atmosphere during a process cycle. The job or charge is loaded into a retort which functions as the chamber of the furnace and the retort is heated externally electrically.

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PIT TYPE AIR CIRCULATION FURNACES

Pit type air circulation furnaces are installed with the opening at ground level or just above it. These are low temperature furnaces with operating temperatures up to 650°C. These furnaces are usually used for heat treatment of non-ferrous alloys, tempering of ferrous alloys after hardening, stress relieving after welding and forming, also for ageing.

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CHAMBER FURNACE

Chamber furnaces are used for batch type operations. Components can be directly kept for heat treating, or trays and fixtures can be provided as well. These furnaces can operate up to 1900°C. They can be of rugged, refractory based construction or lightweight ceramic fiber board and insulation based construction.

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LAB FURNACES

Lab furnaces used for heat treatment of parts for R & D and testing are made small, compact and exactly as the user defines it. These can be used in labs for developments or as prototypes to be later on implemented on a larger industrial scale.

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INCINERATORS

In order to maintain a good environment wastes are to be disposed, converting them to non - toxic and bio - degradable ashes. Therelek's incinerators serve this function using gas fired or oil fired burners, with staged heating, separation and collection of burnt matter. Waste to be incinerated is loaded onto a motorized bogie which is driven to the combustion chamber.

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CHARGE FIXTURES, JIGS & TOOLINGS

In high temperature furnace heat treatment applications, certain components may deform during thermal cycles due to lack of mechanical strength. Charge fixtures give required external mechanical support to ensure these unwarranted deformations do not take place. Therelek designs as well as supplies charge fixtures as per customer's requirement based on process and application.

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THERMOCOUPLE & TEMPERATURE SENSORS

In order to meet your requirements for process measurement & control, Therelek brings you ThermSense, our range of Thermocouples and Temperature Sensors. All types of Thermocouples and RTDs, thermocouple cables and connectors are available calibrated in standard types, various specifications, colour codes and lengths.

"As a furnace OEM cum end-user (heat treat service provider), our knowledge base is constantly expanding, and we use the same knowledge to continuously improve our products, services and costs."

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HEAT TREATMENT SERVICES

The key to world class commercial heat treatment is process control. Process control makes it possible to attain desired result repeatedly with minimum deviation. This is where Therelek excels - continuous standardization and refinement of processes, process documentation and traceability, meticulous planning and scheduling - all of which assure timely, cost-effective results to delight our customers.

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OTHER SERVICING

As a comprehensive solution provider, Therelek provides a vast range of services, from furnace re-design and refurbishing, process consultancy to equipment quality testing - temperature uniformity surveys, systems accuracy test & leak check test.

Reputed customers

APPROVALS

  • Boeing
  • Bonfiglioli
  • CESA / Messier - Bugatti - Dowty
  • EATON Aerospace
  • GE Transportation Aviation
  • General Motors
  • Goodrich Aerospace
  • Halliburton
  • Hamilton Sundstrand (UTC Aerospace Systems)
  • HAL - Hindustan Aeronautics Limited
  • Honeywell Aerospace
  • Liebherr Aerospace Lindenberg GmbH
  • Lycoming Engines
  • Maini Precision Products
  • MOOG
  • NAL - National Aerospace Laboratories
  • Pratt & Whitney (Canada)
  • Pratt & Whitney (U.S.A.)
  • Rolls Royce
  • Sikorsky
  • Snecma
  • Textron Systems
  • TVS
  • Titan Industries
  • Triveni Group
  • Volvo