Surface Treatment Equipment
Introduction
A surface treatment is a manufacturing process that is carried out to give certain characteristics to the surface of an object. In some cases the process may have the additional purpose of bringing the product into dimensional specifications.
Goals
In the past, finishing was understood only as a secondary process in a literal sense, since in most cases it only had to do with the appearance of the object or craft in question, an idea that in many cases persists and is included in the aesthetics and cosmetics of the product.
Currently, finishing is understood as a first-line manufacturing stage, considering the current requirements of the products. These requirements can be:
Applications
Surface treatments can be used, depending on the desired purposes, to:[1].
Depending on the material, some characteristics or others can be obtained depending on the type of treatment used.
Types of surface treatments
mechanical treatments
Among the most common mechanical treatments are the following:.
There are several processes to remove material from the surface, from surface cleaning to stripping, machining by chip removal or abrasion, or electroerosion. There are also processes to remove certain elements from a metal base, such as decarburization or dephosphorization.
Surface heat treatments
Many heat treatments can be done at a surface level, changing properties up to a certain depth without affecting the material inside a part. Some examples are: annealing, quenching, tempering, maturation and tempering.
Coating or deposition of material
Coating or material deposition processes are used to coat surfaces to obtain certain characteristics such as resistance to wear or corrosion, or to rebuild parts.
Electroplating and galvanization: are electrolytic, mechanical or immersion processes by which a surface layer of another corrosion-resistant metal is adhered. The type of metal in the protective layer usually gives the process its name. For example: zinc plated, with zinc; copper-plated"), with copper; nickel-plated, with nickel; chrome-plated, with chrome or tin-plated (obtaining tinplate), with tin.
Other materials that can be electroplated are gold, silver, platinum or rhodium.
Other coating or material deposition processes are:
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References
- [1] ↑ Kalpakjian, Serope; Schimd, Steven R. (2002). Pearson educación, ed. Manufactura, ingeniería y tecnología. Gabriel Sánchez García (trad.) (4ª edición). México. ISBN 978-970-26-0137-1.