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Effect of Technological Parameters on the Quality and Dimensional Accuracy of Castings Manufactured by Patternless Process Technology

Krivoš E., Pastirčák R., Madaj R.

Archives of Metallurgy and Materials

2014

Vol. 59, iss. 3

1069--1072

Submitted article deals with the effect of selected technological parameters on the quality and dimensional accuracy of prototype castings made by Patternless process technology. During experiments were used two types of molding compounds (foamed gypsum and compound based on silica sand and resin). Experiments were focused on optimization of cutting parameters in terms of efficiency, accuracy and possibilities to minimize tool wear. Article deals also with the dimensional and shape accuracy of the castings made by Z-Cast technology. The main aim of the research is to optimize Patternless process technology to such an extent, that achieved dimensional and shape accuracy will be comparable to castings made by the Z-Cast technology.

Artykuł dotyczy wybranych parametrów technologicznych, które wpływają na jakość i dokładność wymiarową odlewów prototypowych wykonanych technologią bezmodelową. Podczas eksperymentów wykorzystano dwa rodzaje form (spienionego gipsu i mas do formowania na bazie piasku kwarcowego i żywicy). Badania maja na celu optymalizacje parametrów cięcia w zakresie wydajności, dokładności i zminimalizowania zużycia narzędzi. Artykuł zajmuje sie również dokładnością wymiarów i kształtem odlewów wytwarzanych za pomocaąZ-cast. Głównym celem tego badania jest bezmodelowa technika optymalizacji tworzenia do takiego stopnia, aby osiągnąć dokładność wymiarów i kształtu odlewu wytworzonego z pomocą Z-cast.

Production of castings by patternless process

Pastirčák R., Urgela D., Krivoš E.

Archives of Foundry Engineering

2012

Vol. 12, iss. 1

87-92

This paper deals with production of safety inlay for steam locomotive valve by the Patternless Process method. For the moulds creation was used moulding mixtures of II. generation, whereas binder was used a water glass. CNC miller was used for creation of mould cavity. Core was created also by milling into block made of moulding compound. In this article will be presented also making of 3D model, setting of milling tool paths and parameters for milling.

Device for production of prototype moulds by milling

Pastirčák R., Urgela D.

Archives of Foundry Engineering

2011

Vol. 11, iss. 1s

45-50

This paper deals with a new mode of production of prototype castings by the method of Patternless Process and a device for production of moulds used in the method of patternless process. The principle of the Patternless Process method consists in creating a 3D model in the CAD system and subsequent milling to form a casting from the block of moulding sands without using of pattern equipment by using a CNC machine tool. This method markedly reduces the time needed to produce the casting, because this method does not need the production of pattern. The paper deals with selecting a machine for production of prototype castings by Patternless Proccess and a detailed description of a device to be used for making moulds. The paper describes in detail the design of the device and individual components needed in the construction of the machine.