Er ärgerte sich stets darüber, dass Gold- und Stahluhren anfangs schön aussehen, aber oft schon nach wenigen Tagen Kratzspuren aufweisen und immer wieder poliert werden müssen.
Hartmetalle aus Wolfram- und Titankarbid waren damals nur als äußerst widerstandsfähige Materialien bei der Herstellung von hochtechnologischen Spezialwerkzeugen bekannt.
www.ceratizit.atHe was constantly irritated when gold and steel watches, which at the beginning looked beautiful, often showed scratches after only a few days and subsequently had to be polished frequently.
Then, tungsten and titanium carbides were only known as extremely resistant materials in the field of high-tech production of special tools.
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