Tube wall measurement

Content

 Use and technique
Variety of measurements
Characteristics
Measuring points in different explanations

 

Use and technique

Day by day our measuring systems demonstrate
in our customers’ plants how well they do their
job.

In a number of noteworthy tube plants, they are
applied for the continuous measurement of wall
thickness.

Through their robust and durable technology
and their above-average accuracy they have
won customer recognition and have become
an indispensable measuring tool in the context
of quality management.


9-channel tube wall thickness gauge

The need for refined and polished process technologies is making itself more strongly felt from year to year. Hence
the need for action is becoming more pressing not only in rolling mill technology but also makes demands on
suppliers of measuring and control equipment in using process technology.

In the area of round products, our tube wall thickness measurement systems provide you today with the best in
high precision and reliability in service. Each system is adapted to your particular measurement needs and uses
state-of-the-art technology.

Thus today, thanks to the multichannel tube wall thickness measurement installation, hot seamlessly formed
tubes can be:

- Shells, produced in Press Mills, Piercing Mills and Cone Mills, etc.
- Elongated tube, produced in elongating processes such as Push Benches, Conti,
  Plug Mills, MPM, and Assel Mills, etc.
- Finished hot tube, produced in Reelers, Sizing Mills, Stretch Reducing Mills, etc.

The distribution of eccentric and polygonal tube wall thickness can also be monitored.

Poor setup and product deviations at the individual deformation processes are detected right at the source and
eliminated resulting in optimal operation of the process.

For the continuous non-contact determination of the tube wall thickness and to measure particular characteristics
of the tube, we apply Details-channel and multi-channel thickness measuring systems. According to the application
these may be supplemented with optical measuring systems. By this means diameter, ovality, length and
temperature can also be determined (variety of measurements).

The thickness measurement working together with the optical system makes it possible to determine exactly the
position around the tube periphery as well as the thickness (the circumferential thickness profile). Fast powerful
computer systems permit the instantaneous real-time display of the measured values and thus give a rapid insight
into the fabrication process.

In addition, procedures relative to quality assurance are carried out (statistical evaluations, long-term analyses via
histograms and frequency distributions etc.). These serve not only to confirm the quality of the product, but can
also be fed back into the fabrication process so as to improve it.

Characteristics

Our systems have, among others, the following performance characteristics:

- Measurement accuracy < ± 0.3 %
- Continuous non-contact data acquisition
- High reliability in service

- Isotope Cs 137
- Robust, heavy duty rolling-mill construction

Measuring points in different explanations

The following overview shows you a few examples from a multitude of possible applications.

Details-channel measuring system for
determinig the thickness in the middle
of the tube


System design:

  Measuring system with one measuring head
  for continuously measuring the thickness
  of the upper and lower tube walls along the
  lenght.
Dual-channel measuring system for
determinig the thickness in the middle
of the tube


System design:

  Measuring system with two measuring
  heads for continuously measuring the
  thickness along the lenght of the tube.

  The thickness of the upper and lower tube
  walls is calculated using the average of the
  two channels.
Multi-channel measuring system for
determinig the thickness in the middle
of the tube


System design:

  Muli-channel measuring system for
  continuously measuring wall thickness
  and eccentricity along the lenght.
Rotating measuring system for
determinig the thickness at the end
of the tube


System design:

  Details-channel measuring system with a
  rotating measuring head for determining
  the thickness at the end of the tube.

If you require further information or product description, please telephone or E-Mail us. We shall be 
pleased to provide further assistance.

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IMS Messsysteme GmbH
Dieselstraße 55
D-42579 Heiligenhaus		 Phone: +49 2056 975 0
Fax:     ++49 2056 975 140		 E-Mail:  info@ims-gmbh.de
Internet:  www.ims-gmbh.de
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