Improvement of the Surface of the Combustion Chamber of a Piston using Selected Techniques of Production Organization

Improvement of the Surface of the Combustion Chamber of a Piston using Selected Techniques of Production Organization

CZERWIŃSKA Karolina, DWORNICKA Renata and PACANA Andrzej

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Abstract. The durability of aluminum pistons is determined by the resistance of the piston crown (combustion chamber) on pressure and temperature. There is a significant risk of fatigue cracking of the edges and the base of the chamber. Hence the need for continuous monitoring of the surface condition of the combustion chamber and prevention of possible incompatibilities. In the paper, the method of eddy currents in the quality control of the surface of combustion chamber of diesel engine pistons used in light vehicles was applied. The aim of the study was to determine, using traditional quality management tools, the sources of nonconformity of castings found in eddy current testing. Ultimately, the aim of the analysis was to reduce the number of non-compliant products or to eliminate them completely. In the analyzed batch of pistons, surface discontinuity in the form of cracks in the combustion chamber occurs most frequently. Based on the Pareto-Lorenza analysis, it can be concluded that this type of non-compliance generates the largest amount of losses (e. g. economic losses). The pistons in which the presented nonconformity has been identified will not be repaired. Therefore, in order to identify and eliminate the causes of non-compliance in the combustion chamber, the Ishikawa diagram in the 6M system was used to analyze the causes of non-compliance in the combustion chamber. On the basis of the in-depth analysis, it was concluded that insufficient feeding during the mold flooding was the key reason for the non-compliance.

Mechanical Engineering, Piston, Combustion Chamber, Eddy Current Testing

Published online , 6 pages
Copyright © 2020 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: CZERWIŃSKA Karolina, DWORNICKA Renata and PACANA Andrzej, Improvement of the Surface of the Combustion Chamber of a Piston using Selected Techniques of Production Organization, Materials Research Proceedings, Vol. 17, pp 270-275, 2020


The article was published as article 40 of the book Terotechnology XI

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