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Cast Iron Reinforced with Foaming Ceramic Insert

Dulska A., Studnicki A., Cholewa M., Szajnar J.

Archives of Foundry Engineering

2018

Vol. 18, iss. 2

137--140

This paper presents matters related to production of ceramic and cast iron composite. The composite was made with the use of a foam structured ceramic insert. The tests included measuring of hardness, impact strength and resistance to abrasive wear of the composite produced. On the basis of obtaining results was stated that the use of foamed ceramic filters provides good conditions of filling a ceramic framework with molten grey or chromium cast iron. The growth of hardness of the ceramic-grey cast iron composite is ca. 60% as compared to the grey cast iron hardness. The growth of hardness of the ceramic-chromium cast iron composite is slight and does not exceed 5 % in comparison to the chromium cast iron. Introduction of the ceramic inserts deteriorates the cast iron impact strength by ca. 20 - 30 %. The use of ceramic inserts increases the resistance to abrasive wear in case of grey cast iron by ca. 13% and in case of the chromium cast iron by ca. 10 %.

Total cutting force components as indirect index for tool wear identification

Mankova I.

Archiwum Technologii Maszyn i Automatyzacji

2003

Vol. 23, Nr 2

77-86

The paper presents results from monitoring of cutting force signals as indices of tool wear and tool failure when turning. Cutting force authentically reflects changes in the tool during cutting with good accuracy. Relationship between cutting force and wear depends on workpiece/cutting tool interface and changes of cutting conditions. Therefore modelling as well as monitoring of tool wear is quantitative different for each workpiece/cutting tool interface and highly sensitive from cutting conditions changes, which obstruct their mutual comparison.

W artykule przedstawiono wyniki monitorowania sygnałów składowych siły całkowitej jako symptomów zużycia i uszkodzeń narzędzia podczas toczenia. Zależności pomiędzy siłami i zużyciem zależą od układu przedmiot-narzędzie oraz zmian warunków skrawania. Modelowanie i mofiilofowame zużycia narzędzia są ilościowo różne dla każdego układu przedmiot-narzędzie skrawające i bardzo podatne na zmiany warunków skrawania.