Coarse-grain annealing of steel
The aim of coarse grain annealing is to improve machinability!
https://youtu.be/PJ2FKTHAo5s
In general a coarse-grained steel microstructure is undesirable due to the relatively low toughness and strength values. The only advantage of a...
Soft annealing of steel
The aim of soft annealing is to improve formability and machinability!
https://youtu.be/PJ2FKTHAo5s
Not every material has to be designed to withstand high mechanical forces. With a curved sheet metal with milled out slots,...
Nitriding of steel (surface hardening)
Nitriding is not based on the formation of martensite but on the formation of hard and wear-resistant nitrides on the surface of the workpiece!
https://youtu.be/7UcNNuqKA6U
Surface hardening like flame hardening, induction hardening, laser...
Laser hardening of steel (surface hardening)
With laser hardening, the surface is heated by a laser beam and quenched by heat dissipation in the workpiece (self quenching)!
https://youtu.be/7UcNNuqKA6U
Laser-beam hardening (laser hardening) offers even shorter heating times of the...
Induction hardening of steel (surface hardening)
With induction hardening, the workpiece is heated by induced eddy currents. The hardening depth is controlled by the frequency of the alternating current!
https://youtu.be/7UcNNuqKA6U
The flames during flame hardening generally lead to a...
Flame hardening of steel (surface hardening)
Surface hardening is used to produce a hard and wear-resistant surface layer on steel workpieces, while the toughness in the core is largely retained.
https://youtu.be/7UcNNuqKA6U
Introduction
A hard surface layer is essential to increase...
Case hardening (surface hardening)
With case hardening, low-carbon steels are first enriched with carbon in the surface layer (carburisation) and then quenched!
https://youtu.be/7UcNNuqKA6U
Case hardening
The toughness (ductility) of steels increases with decreasing carbon content, as then less...
Quenching and tempering of steel
The aim of quenching and tempering is to achieve a hard and wear-resistant surface or to increase the strength of a workpiece.
https://youtu.be/64qw1am8twE
Introduction
The heat treatments explained in the chapter on annealing processes...
Normalizing of steel (annealing)
The aim of normalizing is to achieve a uniform homogeneous microstructure with reproducible properties!
https://youtu.be/PJ2FKTHAo5s
As already explained in the chapter deformability of metals, fine roundish grains generally lead to better toughness and...
Overview of heat treatment of steel
Heat treatment processes are used to specifically influence the properties of the steel.
https://youtu.be/PJ2FKTHAo5s
The microstructure of a steel has a particular influence on its properties. However, the steel microstructure is not only...