The basic manufacturing processes done by TRANSCOM’S could be sorted as follows:

Tooling and prototyping


For the needs of the manufacturing processes TRANSCOM’S produces its own tooling, such as:

  • aluminum press moulds for wax-models for the precision casting;
  • steel press moulds for the rubber and the silicone producing;
  • stamps and dies;
  • prototypes of some articles.

Cold machining

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TRANSCOM’S have and operates all the machinery needed for machining of casts and conventional metals on the scale of the batch production, including:

  • cutting, sharpening, grinding machinery;
  • universal lathes and mills;
  • turret and thread lathes;
  • CNC lathes and mills;
  • guillotines and bending machines;
  • eccentric and hydraulic presses including an unique 500 t, multistoried hydraulic press.

Casting and heat treatment


TRANSCOM’S owns and operates all the machinery for precision casting, die-casting and foam casting, but with the growth scale of production we have learned to cooperate with most of the major foundries in Bulgaria. Our own furnaces include:

  • high-frequency induction furnaces;
  • box furnaces for heat treatment;
  • resistance furnaces with crucibles of 500 kg for aluminum and non-ferrous metals;
  • gas/diesel furnace with crucible of 60 kg for bronze and brass;
  • dryers (up to 350°C) for impregnation and for baking of the powder coating.

Rubber and silicone

Rubber 1

For its pneumatic products TRANSCOM’S uses many different types of nitrile rubbers. In the field of composite silicone insulators the one-component HTV (high temperature vulcanization) material is exclusively delivered by the highest rated suppliers. This material has been proved as the one with the most stable electric-mechanical technical features for dozens of years now. For processing of the material and turning it into finished elements and for assembling of insulators TRANSCOM’S uses the obligatory:

  • mixing shaft of 10 kg;
  • hydraulic and screw-driven specialized rubber presses;
  • two floors 100 t specialized rubber presses;
  • transfer molding single shot fully automated HTV silicone vulcanizing press;
  • finishing operations’ machines;
  • control devices for working duties of presses and the electro-mechanical features of products.

Mounting and testing

Cropped Lab

The highly responsible products of TRANSCOM’S require uncompromising inspection at each stage of their manufacturing. For this purpose TRANSCOM’S has built and arranged many test stands and laboratories for pneumatic, electrical and mechanical testing – for both incoming inspection and final testing of the end products – insulators, clamps, fastenings, tensioning wheels etc. This includes:

  • tension press with digital indication of elongation (for the steel fastenings and the insulators);
  • 100 kV test stand for incoming control of the raw materials for the insulators;
  • 240 kV test stand for group testing of the insulators;
  • universal test stand for static and dynamic loading (to destruction) of different cantilever constructions, tensioning wheels and all other force transferring elements manufactured by TRANSCOM’S.
  • many specialized test stands and equipment for pneumatic parts/assemblies.