Reaming
Chip removing process for the manufacture of perforated pieces, which allows to obtain greater precision measures and smooth surface that can not be obtained with the helical drills.
DetailsReduction
Chemical reaction in which the iron oxides are removed from the iron ore. It is the principle on which the blast furnace is based for the production of pig iron from the mineral. The reduction is direct when the reaction occurs with carbon and is indirect when the reaction is produced with other compounds such…
DetailsReduction ratio
It is the percentage that indicates the times that an original dimension is reduced to obtain the final dimension.
DetailsRefining
The refining is the process of the steel plant where the adjustment of composition and cleaning of the hot metal that comes from the furnace. The refining usually comprises the following stages: Desulfurization, deoxidation, addition of ferroalloys for adjustment of chemical composition, degassing and inclusionary treatment.
DetailsResiduals in chemical composition
Chemical elements contained in the steel and that have not been intentionally added. Residuals are mainly elements that come from the scrap that cannot be eliminated through the metallurgical process. They must be controlled by scrap classification, since they can affect steel properties such as strength and especially plasticity.
DetailsResilience
Energy absorbed at impact breakage of a material at a given temperature. In steel it is the coefficient that is obtained after carrying out the Charpy test to several V-noth specimens. It is the indicative of the toughness that a steel has.
DetailsResulphurised steels
They are free-cutting steels that have a minimum content of 0,1% of sulfur.
DetailsRockwell Hardness
Test that allows to determine the hardness of the material to be penetrated. It consists of the penetration of a sphere (soft material) or diamond cone (hard material) through a load that is carried out in two successive stages. The hardness value is determined by the difference between the depth of penetration of both: E=…
DetailsRolled bars
These are bars obtained through rolling processes. Rolled bars are hot-rolled and their most common applications are for the manufacture of components for the automobile sector such as gears, crankshafts and connection rods.
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