Recommendations for Dry Forming of 16MnCr5 and 42CrMo4 in Cold Forging

Abstract

In general cold forging processes are performed with the use of lubricants to avoid adhesive wear between the tool and the workpiece. Recent research aims on a lubricant-free forming process. That would lead to savings of the ecological, economic and legislative disadvantageous lubricants. The absence of lubricants goes along with increasing tool loads and growing tribological needs. These needs are compensated by novel tool coatings and a surface structuring of the workpiece. In this contribution recommendations for dry metal forming in cold forging are given based on performed tribotests with a Pin-on-Cylinder Tribometer. It contains the presentation of the tribometer and a summary on the performed experiments. Based on the experimental analyses recommendations for a future dry forming process are given. In future work these recommendations will be validated in an industrial dry metal forming process.