Electric heating – Metal heating – Of cylinders
Patent
1993-07-08
1994-12-27
Shaw, Clifford C.
Electric heating
Metal heating
Of cylinders
219109, B23K 1125
Patent
active
053767667
ABSTRACT:
A welded tube monitoring and control system includes a programmable logic controller (PLC) which receives data from a plurality of input apparatus which monitor the tube manufacturing process, and which generates output data to control various components of the tube manufacturing system. An apparatus for measuring the width of the flat metal strip prior to forming the tube transmits measurements to the PLC. The width of the strip is compared to a set of threshold parameters programmed in the PLC, and an alarm is triggered if the measured width exceeds these threshold parameters. A temperature measuring apparatus is located at the welding site to measure the temperature of the weld. The weld temperature is transmitted to the PLC and compared with a set of threshold parameters, and an alarm is triggered is the measured temperature exceeds the threshold parameters. An eddy-current testing apparatus is located downstream of the welding apparatus and transmits data to the PLC. The PLC compares the data from the eddy-current testing apparatus with a set of threshold parameters, and triggers an alarm if the measured data exceeds the threshold parameters. The PLC is connected to the drive for the mill, so as to shut down the manufacturing process if an alarm continues for a predetermined length of time. An override switch is provided so as to override the alarm to prevent the shut down of the mill.
REFERENCES:
patent: 2309343 (1943-01-01), Farrow
patent: 3042788 (1962-07-01), Foster
patent: 3354287 (1967-11-01), Sennello et al.
patent: 3573416 (1969-09-01), Drechsler
patent: 3735084 (1973-05-01), Urbanic et al.
patent: 3899651 (1975-08-01), Bowman et al.
patent: 4012619 (1977-03-01), Lifshits et al.
patent: 4144440 (1979-03-01), Schalch et al.
patent: 4254323 (1981-03-01), Takamatsu et al.
patent: 4287402 (1981-09-01), Hentzschel et al.
patent: 4307276 (1981-12-01), Kurata et al.
patent: 4443677 (1984-04-01), DeSaw
patent: 4608471 (1986-08-01), Vollmuth et al.
patent: 4621176 (1986-11-01), Kliesch et al.
patent: 4636608 (1987-01-01), Palentyn et al.
patent: 4708390 (1987-11-01), Palentyn et al.
patent: 5223683 (1993-06-01), Ishizaka
Shaw Clifford C.
Valmont Industries, Inc.
LandOfFree
Weld quality monitoring and control system for a tube mill does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Weld quality monitoring and control system for a tube mill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weld quality monitoring and control system for a tube mill will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-920589