Wyniki wyszukiwania - BazTech

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Próba łączenia kompozytów metalowo-ceramicznych za pomocą spawania metodą TIG

Ogonowski K., Wysocki J., Gawdzińska K., Przetakiewicz W.

Przegląd Spawalnictwa

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2018

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R. 90, nr 5

51--54

PL

Wprowadzanie materiałów nowej generacji o podwyższonych właściwościach mechanicznych i eksploatacyjnych zwiększa niezawodność środków transportu wodnego, a tym samym bezpieczeństwo żeglugi i obniża koszty eksploatacyjne. Do tej grupy należą odlewane metalowe materiały kompozytowe. Brak jest jednak ciągle precyzyjnego i szybkiego opisu metody łączenia tych tworzyw, co znacznie utrudnia ich wykorzystanie. Dlatego trwają pracę nad doborem dobrych jakościowo metod ich spajania. W niniejszej pracy podjęto próbę łączenia odlewanych kompozytów typu AlSi/SiC przez spawanie metodą TIG prądem stałym.

EN

The introduction of new generation materials with improved mechanical and operational properties increases the reliability of water transport means, thus the safety of shipping, and reduces operating costs. This group includes cast metal composite materials. However, there is still no precise and quick description of the method of combining these materials, which siqnificantly hampers their use. Therefore, work is ongoing on the selection of good quality methods of their bonding. In this work, an attempt was made to join cast AlSi/SiC composites by TIG welding using direct current.

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Assessment of possible control of selected operational properties of metal-ceramic foams

Grabian J., Przetakiewicz W.

Archives of Foundry Engineering

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2010

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Vol. 10, iss. 1 spec.

419--422

EN

Effective use of metal foams, an increasingly popular group of machine structural materials, often requires that their properties be adjusted to customer needs. The growing popularity of foams is due to their specific properties, i.e. capability of absorbing the impact and explosion energy, increasing the stiffness of structural components such as panels of closed profiles, ability to damp vibrations, relatively good thermal insulation, dispersion of electromagnetic waves, resistance to high temperature and others. One of the operational properties of metal foams that is essential for their use in various structures is the resistance to single-axial static compression. Initial studies aimed at the determination of how metal foam behaves when statically compressed. Foam samples were made by blowing gas into liquid metal. The composition of metal foam (AlSi11) was differentiated by introducing ceramic particles SiC. By changing technological parameters of the foaming process we could affect the size of gaseous bubbles and their homogeneity. By comparing the structure of foams and their properties we found significant differences in the curve x = f(P) of foam sample affected by the force (P). It has been proved that one operational property, namely the resistance to compression, can be indirectly controlled, that is its determined specific structure can be obtained by maintaining specific technological parameters.

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Skrawalność kompozytów aluminiowo-ceramicznych.

Kawalec M., Jankowiak M., Król G.

Mechanik

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1998

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R. LXXI, nr 2

67-70

PL

Charakterystyka, właściwości i zastosowanie metalowych materiałów kompozytowych (MMC), w tym kompozytów aluminiowo-ceramicznych. Materiały narzędziowe i narzędzia stosowane w obróbce. Skrawalność kompozytów w operacjach toczenia, wiercenia i frezowania przy zastosowaniu na ostrza różnych materiałów narzędziowych.

EN

Characteristic, properties and applications of metallic composite materials (MMC) including aluminium-ceramic composites. Tool materials and tools used in machining. Machinability of composites in turning, drilling and milling with the cutting edge made of different tool materials.