Worldwide aromatic coffee thanks to Serto's tubes
But also the customer list of Serto's customers themselves is impressive. "Mc Donald's, Starbucks and Dunkin Donuts use coffee dispensers in which our tubes are built-in", exemplifies Florian Windler. In the area of railway construction, Bombardier is a frequent customer. For Bombardier in Great Britain, Serto converts brake pipes for the bogies of railway vehicles. In Taiwan, the brake fluid of the trains runs through Serto's pipes, too.
Quality assurance in the past: Tube inspection with obstacles
The tubes are bent on three bending machines that cope with tube diameters up to 60mm and tube lengths up to 4,000mm. In the past, Serto controlled the quality of the manufactured tubes with conventional gauges. Hoping for faster and more exact measuring results, Serto acquired an measuring arm. Yet it could not fulfill the expectations at long sight. Florian Windler reports: "The tactile system was an enormous improvement in comparison to the old measuring principle. However, it had several drawbacks: The tube inspection took quite a long time. This obstructed our smooth work flow. Moreover, the setup of the bending machines was rather time consuming when we didn't have any CAD data of the tubes and therefore had to wait for the measuring data of the samples. Additionally, we encountered some problems with respect to measuring accuracy. When two people conducted the same measurement with the measuring arm, we got two different results. And finally, we could only measure tubes up to 1.20m in length with the arm. In order to measure longer tubes, we would have had to rearrange it every time which would have caused another loss of accuracy. That was not acceptable."