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Identifying the cause of destruction of textile linear structures

Słodowy J., Rutkowska A.

Autex Research Journal

2004

Vol. 4, no. 3

129--136

The article presents investigations into the mechanism of continuity loss of textile linear products. A method and tools for implementing it have been developed with the aim of investigating loose textile products, and determining the causes of their destruction. Special emphasis is placed on the usability of the procedure we accepted for investigating the resistance of the product's structure to the action of an aerodynamic force which occurs during the transport of weft with a weak structure. Two mechanisms of yarn breakage, especially that of loose wefts, have been differentiated. The first consists in breaking fibres which form the yarn, and the second in mutual slippage of fibres. Both mechanisms can be determined by analysing the force-elongation curves over yarn stretching in both static and dynamic conditions. The influence of an air stream acting longitudinally to the yarn, its velocity and time of action were also determined, with the aim of recognising the conditions of pneumatic weft transport.

High-temperature structural stability of new platinum alloys for use in the glass industry.

Rdzawski Z.M.

Inżynieria Materiałowa

2001

R. XXII, nr 5

765-767

The platinum alloys with rhodium are commonly used in the glass industry mainly for tools (glass fibre bushings) for liquid glass defibering. Because of still rising prices of precious metals, particularly of rhodium and palladium, the need to increase operating life of the tools made of them is of great importance. As a consequence, many attempts have been made worldwide to develop better and cheaper materials and more efficient technologies for their manufacture and processing. In this paper, the world trends in this field have been outlined. A worn out bushing made from classical PtRh10 alloy was taken as an example to discuss the reasons for the tools wear. A new, more efficient material for this kind of applications has been proposed.

Stopy platyny z rodem są powszechnie używane w przemyśle szklarskim, szczególnie na narzędzia (łódki topielno-wyciekowe) do rozwłókniania ciekłego szkła. Przy ciągle rosnących cenach metali szlachetnych, a w szczególności rodu i palladu zagadnienie zwiększenia żywotności eksploatacyjnej narzędzi wykonywanych z tych materiałów nabiera podstawowego znaczenia. Zmusza do poszukiwań lepszych i tańszych materiałów oraz bardziej wyrafinowanych technologii ich wytwarzania i przetwarzania. Omówiono tendencje światowe w tym zakresie. Na przykładzie wyeksploatowanej łódki topielno-wyciekowej wykonanej z klasycznego stopu PtRh10 zilustrowano przyczynę zużycia narzędzia. Zaproponowano nowy, bardziej efektywny materiał do tych zastosowań.