Metal deforming – With indication of condition or position of work – product,... – Work drawn or extruded through die
Patent
1981-07-16
1984-09-04
Crane, Daniel C.
Metal deforming
With indication of condition or position of work, product,...
Work drawn or extruded through die
72248, 324207, B21B 3134
Patent
active
044689446
ABSTRACT:
A rolling mill has a transducer for measuring the separation of a movable part of the mill from the fixed part of the mill. The transducer comprises a magnetostrictive element secured to one end of the fixed part, a transmitter for transmitting magnetostrictive signals into the element, a receiver for receiving signals reflected back along the element and a magnet secured to the other part which produces a magnetic field which serves to reflect the signals along the element. A timer measures the time interval between transmitting the energy and receiving the echo and this is representative of the distance between the two parts of the rolling mill.
REFERENCES:
patent: 3353385 (1967-11-01), Neumann et al.
"Measurement of Mine Roof Movement"-Prepared for U.S. Dept. of the Interior, Bureau of Mines by Ivor Hawkes Associates, Jul. 1978.
Crane Daniel C.
Davy-Loewy Limited
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