Wyniki wyszukiwania - BazTech

1

The process of regeneration of the high-pressure turbine cylinder

Wolny Ryszard

Mechanik

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2019

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R. 92, nr 11

723--725

EN

The process of regeneration of the cylinder of a high-pressure turbine being a subassembly of a 360 MW power block was presented. Criteria that qualify the cylinder for regeneration were discussed. Machining operations with the description of machine tools and special devices were characterized. In order to ensure high quality requirements cutting parameters for selected operations were optimized.

PL

Przedstawiono proces regeneracji korpusu turbiny wysokoprężnej będącej podzespołem bloku energetycznego o mocy 360 MW. Omówiono kryteria, które kwalifikują korpus do regeneracji. Scharakteryzowano operacje obróbkowe oraz obrabiarki i przyrządy specjalne. W celu zapewnienia wysokich wymagań jakościowych zoptymalizowano parametry skrawania dla wybranych operacji.

2

Metrological Aspects of Surface Topographies Produced by Different Machining Operations Regarding Their Potential Functionality

Żak K., Grzesik W.

Metrology and Measurement Systems

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2017

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Vol. 24, nr 2

325--335

EN

This paper presents a comprehensive methodology for measuring and characterizing the surface topographies on machined steel parts produced by precision machining operations. The performed case studies concern a wide spectrum of topographic features of surfaces with different geometrical structures but the same values of the arithmetic mean height Sa. The tested machining operations included hard turning operations performed with CBN tools, grinding operations with Al2O3 ceramic and CBN wheels and superfinish using ceramic stones. As a result, several characteristic surface textures with the Sa roughness parameter value of about 0.2 μm were thoroughly characterized and compared regarding their potential functional capabilities. Apart from the standard 2D and 3D roughness parameters, the fractal, motif and frequency parameters were taken in the consideration.

3

Structural approach to extraction and analysis of 3D features representing machining operations

Jakubowski R., Flasiński M.

Archiwum Informatyki Teoretycznej i Stosowanej

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1999

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T. 11, z. 3-4

249-272

EN

Shape languages introduced in Jakubowski, Information Sciences 39 (1986), 129-151 and 50 (1990), 35-71 are extended to an attributed model and used for a recognition of fuzzy shape features. The parsable family of ETPL(k) graph languages (Flasiński, Pattern Recognition 26 (1993), 1-16, Theoretical Computer Science 201 (1998), 189-231) is applied for a semantically-dependent analysis of solids modeled with shape features.

PL

Niniejsza praca poszerza języki opisu kształtu, które wprowadzono w Jakubowski, Information Science 39 (1986), 129-151 oraz 50 (1990), 35-71, o model z atrybutami. Model ten został wykorzystany do rozpoznawania kształtów rozmytych. Dla analizy semantycznej modeli zastosowano rodzinę języków opisu grafów EPTL(k) (Flasiński, Pattern Recognition 26 (1993), 1-16, Theoretical Computer Science 201 (1998), 189-231).