Termiki emal texnologiyasıTopics

The importance of the subject of heat treatment in engineering and metallurgy, the objects studied by the subject and the general principles of controlling the properties of metal by heat.

The main stages of the heat treatment process (heating, storage, cooling) and classification of these operations according to their purpose.

The systematized structure of the main thermal processing types (softening, normalizing, tempering, tempering) and chemical-thermal processing processes.

The relevant laws of thermodynamics and the main mechanisms of heat exchange (convection, radiation, heat transfer) between the environment and the detail.

The physical nature of heat conduction, fourier's law, heat flow and factors determining the thermal conductivity of materials.

Mechanisms of heat propagation in metals and alloys through electron gas and phonons.

Non-stationary variation of the temperature field, physical meaning of the temperature transfer coefficient and thermal inertia of the material.

The influence of the phase composition of steel, the amount of carbon and alloying elements in its content on its temperature transfer properties.

During heating or cooling, temperature distribution over the volume of a solid body and the formation of a temperature gradient.

The atmosphere of heating furnaces, the cooling capabilities of various cooling media (water, oil, polymer solutions) and heat exchange conditions.

Determination of time parameters (empirical and analytical methods) of the thermal treatment mode depending on the size, shape and material of the part section.

Diffusion mechanisms in solid state, fick's laws and migration of atoms during chemical-thermal processing (cementing, nitrating).

Classification of stresses caused by volume changes: macrostrains (type i), microstrains (type ii) and submicroscopic stresses (type iii).

The potential of steel to acquire a high-hardness martensite structure and the effect of carbon content on maximum hardness.

The concept of depth, crack diameter, where the martensite structure (or semi-martensite zone) can spread along the cross-section of the part.

Determination of heating temperature based on iron-carbon state diagram (critical temperatures), types of tabulation (continuous, stepwise, isothermal).

Type i (homogenization, recrystallization, stress relief) and type II (complete, incomplete, isothermal) annealing/annealing operations.

Low, medium and high temperature annealing processes to reduce the internal stresses of forged steels and obtain the required mechanical properties (viscosity, elasticity).

Heat treatment defects such as oxidation, decarburization, cracking, deformation (bending), insufficient hardness and spot plating.

Standard heat treatment routes used to optimize the properties of structural and tool carbon steels.

The effect of alloying elements on phase transformations, the problem of the viscous-brittle transition and the properties of heat treatment of alloyed steels (especially construction).

Complex and multi-stage thermal processing processes of corrosion-resistant (stainless), heat-resistant, corrosion-resistant and high-speed steels.

"cold treatment" and long-term tempering for complete structural stabilization of instrument parts, gauges and measuring instruments requiring dimensional stability.