The main objective of the present study is enhanced of the sand moulding process through addressing the sand mould defects and failures, ultimately lead to improve production of the sand castings with well-defined of pattern profiles. The research aimed to reduce the cost and energy expenditure associated with the compaction time of the sand moulding process. Practical destructive tests were conducted to assess properties of the green sand moulds. Linear regression and multi-regression methods were employed to identify the key factors influencing the sand moulding process. The proposed experimental destructive tests and predicted regression methods facilitated measurement of the green sand properties and enabled evaluation of the effective moulding parameters, thereby enhancing the sand moulding process. Factorial design of experiments approach was employed to evaluate effect of parameters of water content and mixing time of the green sand compaction process on the mechanical properties of green sand mould namely the tensile strength, and compressive strength.
W artykule przedstawiono podstawowe zagadnienia związane z koncepcją lean manufacturing oraz jej zastosowanie w doskonaleniu działań przedsiębiorstwa produkcyjnego. Omówiono obszar wdrożenia koncepcji oraz proces wytwórczy poddany doskonaleniu. Dokonano analizy stanu obecnego procesu oraz zaproponowano propozycję zmian i kolejne kroki ich wdrażania. Przedstawiono wyniki możliwe do uzyskania po wdrożeniu zmian oraz wnioski płynące z zastosowania koncepcji lean manufacturing.
EN
In this paper lean manufacturing were reviewed. The attention was drawn on the key issue in lean manufacturing which is contrasting value added activities with wastes. The main methods, tools and techniques of lean approach that need to be a subject of implementation according to the VSM outcome were listed, results of Lean Manufacturing implementation were presented.
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