Development of Oil Purification Process in Metal Sheet Products

Abstract

Today, the use of metal sheet is quite high in order to provide the required strength and endurance values in the automotive industry. Metal sheets take form by going through different operations. Special oils are used in order to create the geometric forms they have easily and to prevent the sheet metal from being damaged. These used oils come into contact with metals during the geometric forming and machining processes and most of them remain on the metals. These oils cause difficulties in operations such as welding, coating and painting after the forming process. For this reason, a clean surface is considered as the most important step in the preliminary preparation of the next processes. There is an increase in the stickiness of the oil on the metal, which reaches a certain temperature by applying the welding process. This situation causes problems such as non-adhesion to the surface and peeling of the coating in the powder paint and zinc coating applied to increase the corrosion resistance of metals and the life of the product. In addition, when the oil residues on the metal are not cleaned, undesirable boiling occurs in the coating pool and causes an ash problem. 
 In this study, it is aimed to develop a metal-specific degreasing process to clean the oils of different viscosities used in different processes while forming the geometric form of the metal. Thus, the surface quality will increase and it will be ensured that the errors that occur in the next operations that require surface cleaning will be prevented.