Tech Focus Using the correct prelube oil increases tool service life
Lubricants are essential for optimising tool life and for raising productivity. In an analysis of Zeller + Gmelin's second generation prelube oil Multidraw PL 61 SE in comparison with its previous product, the prelube oil PL 61, significant improvements have been verified.
Because of their enormous lightweight construction potential, and the general interest in saving material, the metal forming industry increasingly relies on high-strength and ultra high-strength steel grades. To help customers meet increased demands placed on press shops, the lubricant experts from Zeller + Gmelin have developed "Multidraw PL 61 SE", a 2nd generation prelube oil.
The increasing use of high-strength and ultra high-strength steel grades in automotive body press shops presents new challenges. Its VDA Working Group, responsible for forming lubricants, demanded an improved prelube oil. In essence, prelube oils are anticorrosion oils with additional additives, which can act simultaneously as forming oils in the press shop. In this market, Zeller + Gmelin's Multidraw PL 61 has been a successful prelube solution for many years.
Requirements for a second prelube oil generation included, on the one hand, further good compatibility with downstream processes of the painted body and, on the other hand, the improved tribological properties, in particular, on hot-dip galvanized surfaces. We developed the new Multidraw PL 61 SE to meet precisely these requirements. Its application to the rolling mill allows press shops to operate without additional lubrication, which must be eventually removed through a cleaning process before painting.