Glass lubricant

摘要

A glass lubricant, in particular for metal forming, containing at least one lead-free, boron-free phosphate glass containing from 50 to 85 mol % of P2O5 and from 15 to 50 mol % of at least one representative from the group consisting of BaO, K2O, alkali metal fluorides and/or alkaline earth metal fluorides, and optionally from 2 to 40 % by weight of at least one pulverulent alkaline earth metal oxide and/or silicate of the alkaline earth metals or of aluminium.