PRODUCTS & EQUIPMENT 5 x measuring = 5 x different results...
is always same, unfortunately delude themselves. Making the same point on the part and the probe repeatable is virtually impossible. Even if it is a ball probe, which
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is gently, accurately and carefully moved due to robot control, it is difficult to find the same point of contact with the object, and at the same time to find the same place on the probe or measuring tip. This means that there are always tolerances, definitely, if it’s manual measurement. High-tech measuring devices, which are always in the same place, always measure at the same temperature, will never be moved from any slight vibration, will get close to the real value. But here too, the
hoever says that if one measures a part several times, the result
repeatability, reproducibility, linearity or stability. There are different systems, which also do not give a common result. The part to be measured must be 100% fixed so that the measurement point does not change by touching the probe.
However, there is the possibility IR 90x130Großrohre BenderFerndorf InternTUBE KW 39_IR 09.09.15 16:12 Seite 1
results are only similar, not the identical, even though it is the same object, the same user and the same measurement system. The next hurdle in pipe measuring is the pipes themselves! They are not always round and not always straight. When they
Berlin, Düsseldorf, Frankfurt/M, Hamburg, Hannover, München, Regensburg, Stuttgart
come out of the bending machine, they are definitely no longer round but have impressions and deformations at various points. All known measuring methods
and special programs do not help the customer who needs the results, no matter if it is
to check the accuracy and the correctness by repeatedly measuring at the same place, at the same temperature, with the same operator and the same device. After each measurement the mean value of the respective measurement is calculated and “fed” to each measurement method. What should also be taken into
consideration is that both the CMM itself. the measurement probes, the measuring forks or the lasers must all be calibrated separately.
Production plant for spiral-
welded large-diameter pipes with the entire range of peripheral equipment
and certified materials testing laboratory
Next level of stainless steel tube production
Insolvency sale ex location Germany
A renowned South East Asian producer of high class stainless steel tube products for the automotive industry placed an order about a tube mill with SEUTHE, a member of the ASMAG group. Challenging thin-walled stainless steel tubes up to a max. diameter of 60 mm and a min. wall thickness of 0.5 mm will be produced on this specially developed laser mill generation. High precision of the tubes is the point. This is reached by a single motor for each roll shaft. The special features of this solution are that the tool rolls can be perfectly adjusted and consequently allow to reduce the thickness of the tool rolls which means to reduce tool roll costs, plus to avoid relative movement at the tube. The application of the same motor type directly reduces spare parts and storage costs. The high class stainless steel
14 IMT September 2015
www.internationalmetaltube.com
tubes to be produced on this mill will be seam grinded, laminated, non-destructive tested and chiplessly cut - even smallest tube lengths. The tube products can pass an inline heat treatment to homogenize the microstructure and bright-anneal the tube surface. Further processing will be done in the finishing section whereas the perfect cut quality eliminates a tube end machining. What makes this tube mill unique
is the solid engineering “Made in Germany”. SEUTHE designs and manufactures this production line inclusive the finishing section. The pre-commissioning in Germany enables the producer to start his production smooth and quick. Additionally, the customer benefits from reproducible mill settings and a fine-tuned mill control system to reach high productivity at a consistent and easy reproducible product quality.
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