Polyfunctional Process Media for Metal Working

Abstract

Protecting metal articles from corrosion is pressing in all stages of their manufacture and use. Foci of corrosion that arise during storage and shipment significantly complicate application of galvanic and paint and varnish coatings, worsen the quality, and reduce the lifetime of the articles.To eliminate these defects, mechanical treatment or chemical etching of the surface layer are included in the manufacturing process, and conservation of the articles between operations is used to prevent them. The last method is the simplest and least laborious.However, in this case, too, due to the poor compatibility of the conservation compositions and process media, process media residues must be removed from the surface of the part before they can be applied.Conservation oil (CM) used for sheet protection at metallurgical combines and in automobile plants before sending the stock for stamping is removed with a special detergent.In metalware production, the finished parts (when thermal or galvanic treatment is not planned) are carefully degreased with detergent solutions before going to the conservation oil bath. The effectiveness of the anticorrosion protection is a function of the quality of degreasing and the corrosiveness of the detergent solution to a significant degree.Such a combination of mechanical treatment and conservation of metal parts and stock is typical of most machine-building plants. For this reason, developing conservation-process lubricants (CPL) that allow combining these operations and eliminating the stage of intermediate degreasing is pressing.The CO manufactured in Russia cannot be used in even the simplest metal-working operations where low-efficiency process lubricants (PL) or ordinary industrial oils are used as process media. The mandatory requirements for PL are: simplicity of removal from the surface of the metal, ease of application, and stability during prolonged storage. The currently offered PL and protective materials are usually either highly viscous, which makes it difficult or impossible to feed them into the treatment zone or are not completely removed from the surface of the metal by the detergents used in machine building.