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Wyszukujesz frazę "flat lapping" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Measurements of lapping plate temperature
Autorzy:
Molenda, J
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/243508.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
flat lapping
lapping wheel temperature
material removal rate
surface roughness
Opis:
Lapping process is commonly used for ultra-precision machining of various materials. An essential role during lapping plays flatness of the wheel-working surface because workpiece surface takes mirror image of it. Due to its applications requiring extreme size accuracy, straightness and concentricity, it is very important that working surface remains flat in the course of machining. Getting out of flatness can be caused by uneven wear or heating. To prevent nonuniform wear of lapping plate surface, conditioning rings should be suited appropriate. Lapping machines producers and researchers make recommendations about proper rings position during machining. To provide constant temperature of the wheel, cooling systems are applied in modern machines, but not in all of them. Therefore, wheel temperature problem is significant one, and it should be known. This paper presents results of authors work on choosing proper measurement method of lapping plate temperature. During lapping process wheel is rotating. Maximum velocity value for ABRALAP 380 lapping machine is 65 rev/min. Mainly for this reason, contactless infrared method was selected. Because getting an accurate temperature of an object using this method is difficult, during experiments temperature rise not exact value were analysed. There were also presented results of experiments which goal was to find lap plate emissivity.
Źródło:
Journal of KONES; 2014, 21, 3; 245-250
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Steel C45 elements lapping
Autorzy:
Molenda, J.
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/241819.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
flat lapping
steel C45 lapping
material removal rate
surface roughness
Opis:
Lapping is a process by which material is precisely removed from a workpiece to produce a desired dimension, surface finish or shape. It also removes subsurface damage caused by sawing or grinding. According to the classification surface to be generated, type of surface, kinematics of the cutting process, and tool shape (profile), many process variants can be distinguished. Among them face lapping are the most widespread lapping processes. They are used to produce a smooth, flat, unpolished surface. The process of lapping materials has been applied to a wide range of materials and applications, ranging from metals, glasses, optics, semiconductors and ceramics. Workpiece material properties and structure determine kind of material removal. Material removal by cutting, microfusion processes and material removal by microdeformation or by the induction of microcracks are to be underline. C45 is a medium carbon steel used when greater strength and hardness is desired than in the "rolled" condition, especially in mechanical engineering and automotive components. To minimize wear in high-speed applications requires extreme size accuracy, straightness and concentricity. To meet those high demands turning, grinding, lapping and polishing processes are used. This work presents results of steel C45 elements lapping. The experiments were conducted during flat lapping with use of ABRALAP 380 lapping machine. The lapping machine executory system consists of three conditioning rings. The process results were surface roughness Ra and material removal rate.
Źródło:
Journal of KONES; 2014, 21, 1; 169-174
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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