Improvements in tubular solar collectors

The present invention regards a metal composition suitable for originating a joint (22) by means of welding with a borosilicate glass for a solar collector (10). The composition, expressed in weight percentage, comprises the following alloy elements Table 1 and it is such that 45.5 (Ni+Co) 46.5, and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	RAGGI CLAUDIO, CAGIOLA LEARCO, RUFFINI FEDERICO, FORTUNATI STEFANO, DE LUCA ANTONIO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY RANGES SOLAR HEAT COLLECTORS SOLAR HEAT SYSTEMS TREATMENT OF ALLOYS OR NON-FERROUS METALS VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	The present invention regards a metal composition suitable for originating a joint (22) by means of welding with a borosilicate glass for a solar collector (10). The composition, expressed in weight percentage, comprises the following alloy elements Table 1 and it is such that 45.5 (Ni+Co) 46.5, and that (Ti+Ta+Zr) 4×C, the remaining part being made up of iron, apart from the inevitable impurities. The invention also regards: a metal ring (20) made of the metal composition described above and suitable for originating a metal-glass joint by means of welding; the metal-glass joint thus obtained; and the tubular solar collector (10) thus obtained.