Method and apparatus for determination of twist angle during a rolling operation
AssigneeVallourec Deutschland GmbH
InventorsMark VAN DER LOGT, Ralf VOLLES, Christian KLEMPEL
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Abstract
A non-destructive method for determination of twist angle of an outlet product during rolling of an inlet product into said outlet product, comprising the steps of measuring a rotational inlet speed of the inlet product during said rolling, measuring a rotational outlet speed of the corresponding outlet product during said rolling in order to determine a delta rotation, measuring a longitudinal speed and determining a twist angle from said delta rotation and said longitudinal outlet and/or inlet speed.
Claims19
A non-destructive method for determination of twist angle of an outlet product during rolling of an inlet product into said outlet product, comprising the steps of:
- measuring a rotational inlet speed of the inlet product during said rolling,
- measuring a rotational outlet speed of the corresponding outlet product during said rolling,
- measuring a longitudinal outlet and/or inlet speed of the said respectively corresponding outlet product and/or inlet product,
- Determining determining a delta rotation from said rotational inlet speed and said rotational outlet speed, and
- Determining determining a twist angle from said delta rotation and said longitudinal outlet and/or inlet speed.
An apparatus for non-destructive determination of twist angle during rolling of an inlet product into an outlet product comprising:
- a first inlet sensor adapted to measure speed of the inlet product,
- a first outlet sensor adapted to measure speed of the outlet product,
- an outlet outside diameter sensor, and
- an electronic configured to determine the twist angle of said outlet product based on measures performed by the said sensors during rolling.
Dependencies are inferred from the claim text.