Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

2 Archives of Mechanical Technology and Automation

2 2014

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Surface roughness properties for punch stamps built from unconvenctional materials

100%

Tomáš M. , Draganovská D. , Ižol P. , Hudák J.

Archives of Mechanical Technology and Automation

2014

tom Vol. 34, no. 3

57--66

The article presents the study of surface‘s quality of punch stamp built from a Textit J composite, Fibroflex 5 polyurethane and X210Cr12 steel tool. The composite and polyurethane were used for rapid tooling, during which an experimental stamping of the die was verified. During the experiments, various machining strategies have been proposed and optimised using SolidCAM software with consideration of the maximum Scallop Height. Later, the results and conclusions of the unconventional materials‘ machining were applied during machining of the steel punch stamp. The surface‘s quality was reviewed by measuring surface roughness in selected areas of the punch stamp. The roughness parameters of Ra and Rz, the profile curves and the Abbott-Firestone curves were compared.

Evaluation of micro-geometry changes on surfaces after chemical pretreatment

100%

Draganovská D. , Tomáš M. , Ižol P.

Archives of Mechanical Technology and Automation

2014

tom Vol. 34, no. 2

17--24

The paper discusses the evaluation of the surface quality in terms of microgeometry. For the experiment, samples of S235JRG2 steel were used. The surface of the steel was chemically pretreated prior to the tests. Thefocus of the research was on the surfaces of steel sheets in states such as an initial state surface, degreased surface, galvanized surface, a surface after galvanizing and chromatizing, degreased and phosphated, and a surface pretreated with degreasing and phosphating with RAL coating. The measurement of microgeometry parameters on the samples was evaluated by a profilometric device Surftest SJ – 201, Mitutoyo, Japan. The roughness parameters Ra, Rz, RSm, and RPc, were measured on evaluated surfaces and compared. Profilographs, as well as Abbot Fireston curves were also evaluated.

W artykule oceniono jakość powierzchni z punktu widzenia mikrogeometrii. W badaniach wykorzystano próbki ze stali S235JRG2. Powierzchnie badanych próbek poddano różnym zabiegom obróbki chemicznej. W badaniach przeanalizowano próbki w stanie początkowym oraz po procesach: odtłuszczania, galwanizacji, galwanizacji i chromowania, odtłuszczania i galwanizacj odtłuszczania i galwanizacji z powłoką RAL. Parametry mikrogeometrii powierzchni zmierzono za pomocą stykowego profilografometru Surftest SJ-201 Mitutoyo. Na podstawie pomiarów wyznaczono parametry chropowatości powierzchni Ra, Rz, RSm i RPc badanych próbek, a następni dokonano ich porównania. Analizie poddano również profilogramy i krzywe Abbotta-Firestone’a.