EoW November 2010

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EuroWire – November 2010 37
technology news
Optical length and speed
measurement
In highly automated production processes
measurement of operational throughput
delivers essential data to control process
parameters or, as in the manufacturing of
piece goods, an automatic start and end
recognitionmechanismallows autonomous
length measurement.
When working with hot, elastic, highly
sensitive or dough-like materials, it is
impossible to use tactile sensors such as
odometers or tacho rolls. The accuracy of a
mechanical sensor system is also reduced
by slippage, which in practice can lead to
measuring errors of 10% or more.
In both cases, non-contact optical metrology provides significant benefits. With the
Speel 3000, Zumbach offers a gauge that can be used for applications that demand a
high degree of accuracy at high speeds, up to 3,000m per minute.
Speel 3000 is available for a measuring distance of 300mm and is said to achieve an
accuracy of 0.05% or better. The measured length is transmitted to subsequent
electronics using an industry standard incremental interface. An alternative
synchronous serial interface (SSI) is also available.
In addition, an electrical output signal compatible with common incremental encoders
is available and can be directly connected to control systems, electrical counters or
frequency inverters.
The main features of Speel 3000 include:
Detection of standstill •
Detection of direction •
Start and end recognition •
Allows deviation of the measuring distance •
Suits smooth and rough surfaces •
Long life LED illumination •
Maintenance free •
Zumbach Electronic AG – Switzerland Fax: +41 32 356 0430
Email: Website:
Non-contact length measurement from Zumbach ▲ ▲
Xuanhua Iron & Steel (a division of the state-owned Hebei Iron & Steel Group) has
placed an order for a 3-roll reducing and sizing block [RSB] with Friedrich Kocks GmbH
& Co KG.
The RSB is designated for the small bar mill, one of Xuanhua’s five new rolling mills
currently under construction. The 3-roll block will be implemented behind the 2-high
roughing and intermediate mill, which will consist of 18 HV stands.
The scope of supply includes the 3-roll reducing and sizing block, with automatic
quick stand changing system, and CAPAS, the computer-aided system for accurate
adjustment of rolls and roller guides of 3-roll stands.
Besides the supervision of erection and commissioning Friedrich Kocks will, for the first
time, be responsible for the process and the equipment of thermo-mechanical rolling,
which is also part of the scope of supply. Commissioning of the new 3-roll reducing and
sizing block is scheduled for the end of 2011.
Friedrich Kocks GmbH & Co KG – Germany
Website:
Xuanhua orders 3-roll
reducing and sizing block
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