Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 3

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  cięcie na sucho
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
EN
The paper presents the influence of coatings applied with the use of PVD method on cutting tools on the wear of the tool and compares it with an uncoated P25 cemented carbide plate. During the experiment, two types of TiAlN coatings were used, applied in various proportions, as well as TiN coating. During the tests, the average width of the wear band on the flank face in B VBBzone and the width of KBcrater were monitored. Moreover, the scanning analysis of the tool was conducted in order to determine the intensity of adhesive wear. The lowest values of selected tool wear indicators were found out with the use of TiAlN coating applied in eight layers in the proportions 33/67% -TiN/TiAlN. The scanning analysis proved the highest adhesive wear of the uncoated P25 cemented carbide plate, as well as increased abrasive wear of the flank face and the formation of a crater in comparison with coated plates.
EN
Tasks of cutting fluids used in machining are discussed and their chemical composition and harmful influence on servicing personnel and surrounding environment are presented. A need to supervise the condition of cutting fluids, necessary to extend their durability, is underlined. A threat may be decreased through scant lubrication in machining or dry cutting.
3
Content available remote Dry cutting gear hobbing in modul range m≥4 mm with HSS tools
EN
In line with the project the high work potential of dry cutting and minimum quantity lubrication (MQL) with coated HSS-gear hobs will be shown in order to realize an economical and reliable method for gear hobbing of toothed systems with bigger modules, which works completely without or nearly without cooling fluids respectively. For the investigations was used common material for gears in a module range from 4 mm to 7 mm and progressive cutting values similar to industrial applications. It was demonstrated that industrial produced gear hobs from powder metallurgical HSS with TiAlN coatings by using methods of dry cutting and MQL can resist the occurring process charges due to the bigger modules and gear width. In comparison to the state of technical knowledge which is wet cutting was ascertained an enormous increase of tool life by using this method of dry cutting and MQL.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.