SERVICES

​WELDING OF STEELSTRUCTURES

​REPAIR AND MAINTAINCE OFCRANES

​ROPE PULLEYS

​HOOK BLOCKS

​ASSEMBLY AND DISMANTLINGOF STEEL STRUCTURES

​ROPE FIXING IN BUSH

​REPAIR OF CRANE TRUCKS

​MACHINING

​THERMAL PROCESSING

ТHERMAL PROCESSING

Thermal processing is a process in which the structure of steel lattice changes. Whereby the metal changes its physical properties at constant chemical properties.

LLC “Tehnolitinvest” performs such types of thermal processing as: Annealing – heating of the material in the furnace (furnace for thermal processing with the pull-out backstone) to a temperature of 900-950 ° C. Soak at this temperature is 3-4 hours, and then the material gets cool with the furnace.

Normalization – is the heating of the material in the furnace (furnace for thermal processing with the pull-out backstone) to a temperature of 900-950 ° C. Soak at this temperature is 3-4 hours, and then the material gets cool at the open air.

Annealing of welded metal constructions is the process of heating of the welded products up to a temperature of 600 degrees with the further cooling with the furnace (furnace for thermal processing with the pull-out backstone).

Hardening is a process in which the steel is heated above the critical temperature, and then quickly cools.

Sorbitizing is a special kind of steel processing thermally; it consists in heating the steel above the temperature of upper critical point  and cooling at 100-600 ° C / min (using an air jet or in a liquid medium is heated to 300-500 ° C).