Robust direct current potential drop method to inspect cold pressed green bodies

Autor:	Petri Luukkonen, Torsten Ericsson
Rok vydání:	2003
Předmět:	Pressing Materials science Metallurgy Direct current Metals and Alloys Defect free Condensed Matter Physics Compression (physics) Mechanics of Materials Iron based Powder metallurgy Electrode Materials Chemistry Ceramics and Composites Composite material Voltage drop
Zdroj:	Powder Metallurgy. 46:329-334
ISSN:	1743-2901 0032-5899
DOI:	10.1179/003258903225008625
Popis:	The basics of the direct current potential drop (DCPD) method is presented. It is applied to studies of pressing defects in green bodies made of iron based powders. Three types of bodies are studied: rectangular bars, two level L shaped bodies and a multilevel industrial body. It is found that by using ratios of potential drop (PD) between defective and defect free areas of a body the method becomes more insensitive to disturbances. For this purpose a five electrode probe has been designed. An analysis of the statistical scatter indicates that the DCPD method is more suited to find the correct press settings than to look for defective specimens under production.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d7bd2eceeb6cf12509b4e4c97fb3ae54 https://doi.org/10.1179/003258903225008625 Zobrazit plný text záznamu Plný text ve formátu PDF