Deep Cold Rolling of Almen Strips for Process Monitoring

Author:  G. G. Feldmann, E. Mueller
Source:  Conf Proc 2014: ICSP-12 Goslar, Germany (pgs.392-397)
Doc ID:  2014109
Year of Publication:  2014
Abstract:  
Nowadays high durability and high efficiency of components compared with lightweight construction and cost effective processes set high demands on manufacturing industry. To meet these requirements additional processes to increase component properties are used. Some of them like shot peening reach their limit to fulfil the requirement for enhancing fatigue strength of components and resistance against damage. More and more deep cold rolling (DR) or low plasticity burnishing (LPB) is used to improve the finish quality and to introduce deep residual compressive stresses to mitigate crack initiation and crack propagation. Shot peening uses the Almen strip method, which enables a comparability of different peening processes through quantifying the intensity of the process by using thin strips of SAE 1070 steel. LPB uses a load folk to adjust and control the forces. This paper gives an insight into the capability of Almen strips used for process monitoring of different deep rolling applications.