JOINTS OF STEEL-BRASS ONE-SIDE WELDED BY EXPLOSIVE METHOD

In this paper the results of investigation of the BW08 steel and M80 brass joints are presented. These joints were formed in three-layer billets (brass-steel-brass) during two-stage and one-side explosive welding. The investigations included microhardness and metallographic examination as well as determination of the superficial distribution of elements. On the basis of the results obtained it can be stated that the process of steel-brass joining runs in a high complicated manner through a plastic deformation and adhesion phenomena

Analysis of novel high energetic explosives

Przedstawiono wyniki doświadczeń nad zastosowaniem chromatografii cienkowarstwowej (TLC) do analizy nowych wysokoenergetycznych materiałów (HNIW, TEX, TNAZ, DADNE) na tle stosowanych powszechnie klasycznych materiałów wysokoenergetycznych. Dobrano układ chromatograficzny umożliwiający poprawny rozdział badanych związków i określono ich parametry analityczne. Zaproponowane rozwiązanie analityczne wykorzystano do identyfikacji powybuchowych pozostałości materiałów wybuchowych w próbach gleby i betonu. Anality wydobywano z matryc techniką ekstrakcji cieczowej, a następnie zatężano, oczyszczano i analizowano za pomocą TLC (TLC wykorzystano do celów preparatywnych i anlitycznych). Wykazano możliwość wykorzystania zaproponowanej procedury analitycznej do identyfikacji powybuchowych pozostałości materiałów wybuchowych w próbkach pobranych z miejsc zdarzeń.Results of invastigation on application of instrumented thin layer chromatography (TLC) in detection and analysis of novel high energetic explosives such as HNIW, TEX, TNAZ and DADNE in the presence of conventional explosives like TNT, HMX, RDX, PETN and TETRYL are presented. Chromatographic systems that make possible the separation of the tested explosives were found and the analytical parameters were determined. The developed analytical procedures were used to identify the compounds in post explosion environmental samples. Analytes were recovered from soil and concrete by liquid extraction and the concentrated extracts were purified and analyzed using TLC technique (TLC was used for preparative and analytical purposes). The possibility of application of the procedures for identification of post explosion of the explosives in samples, taken from the place where an explosives charge has been detonated, is confirme

Joints of Steel-Brass One-Side Welded by Explosive Method

In this paper the results of investigation of the BW08 steel and M80 brass joints are presented. These joints were formed in three-layer billets (brass-steel-brass) during two-stage and one-side explosive welding. The investigations included microhardness and metallographic examination as well as determination of the superficial distribution of elements. On the basis of the results obtained it can be stated that the process of steel-brass joining runs in a high complicated manner through a plastic deformation and adhesion phenomena