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full circumference of the tube. The sensor records the wall thickness data at several location along the length of the tube and at several angle with respect to the circum- ference of the tube. The data may then be displayed either as func- tion of the length, as in the previ- ous example, or as function of the angle of acquisition. An angular display, as shown in Figure 9, provides information to the oper- ator at speci c angles, such as the angle of the roll of a retained mandrel mill. Knowing at which angle wall thickness issues occurs, the operator may determine which roll stands needs to be adjusted.
CONCLUSION
Low eccentricity is of great value
for seamless tube manufacturers.
Online accurate non-contact wall
thickness sensor is a valuable tool
to achieved such low eccentricity.
The Lut Revolution, with its ex-
ible affordable non-contact ultra-
sonic technology, provides valued
information on wall thickness
and eccentricity at all stage of
the seamless tube manufacturing
process. Real-time display allows operator to verify that production is within tolerance goal, to track production degradation, and to adjust setting in order to achieve production goals.
More advanced signal processing and display enables operators to better address production issues. Understanding the source of eccen- tricity and its impact on the wall thickness pro le enable rapid reac- tion and increased productivity. By tracking the various eccentricity cycles from wall thickness pro le decomposition, production change from tool wear, for example, may be predicted and intervention planned in advance. Maintenance can than move from a reactive mode, where repairs are done when some unfortunate event occurs, to active mode, where maintenance in planned based on data, avoiding down time and extending production time.
Fig. 9 Radial wall thickness pro le
ITA Award Winner 2018
Marc Choquet P. Eng. Ph.D. - Applied Physics
Senior Business Development Of cer
1321 Hocquart Street Saint-Bruno-de-Montarville, QC, Canada J3V 6B5
Tel.: +1 450 461 1221 #227 Mobile: +1 514 865 000
www.tecnar.com
ITAtube Journal No2/July 2018
29