For many years, self-supporting designs for glass stirrers made of grain stabilized PGM (Platinum Group Metals) alloys have proven their outstanding performance, primarily in specialty borosilicate glass applications. Until now, temperature homogenization in soda-lime glass applications was commonly achieved by using ceramic stirrers. Ceramic stirrers have historically been viewed as the most economical alternative for applications where stirring temperatures are usually lower and homogeneity requirements are moderate. This paper aims to explore the potential possibilities of lightweight, self-supporting PGM-stirrers and their advantages when applied in soda-lime glass melting. Grain stabilized PGM-alloys, combined with advanced manufacturing methods enable the construction of efficient and long-lasting stirrers. In a market environment where glass requirements grow increasingly stringent, it can make technical (stirring efficiency) and economical (total cost) sense to replace or complement traditional stirring methods with grain stabilized PGM-stirring technology.
