Method and means for separating successive rolling lots

Details Method and means for separating successive rolling lots Method and means for separating successive rolling lots

1976-09-16

1977-06-21

Mehr, Milton S.

Metal deforming

By use of roller or roller-like tool-element

Plural roller-couples

72483, 250303, B21B 3900

Patent

active

040303330

ABSTRACT:
The method of gaplessly separating and identifying successive rolling lots of ingots or blooms in a production process for making tubes or the like wherein the stock is introduced into a furnace for heating and in a production line subsequently rolled, which comprises radio-actively marking the first or the last ingot of a given rolling lot of ingots at its subsequently lost end prior to being introduced into the furnace. A further step includes interposing a radio-active radiation responsive signal device in said production line before rolling. Apparatus for carrying out said method includes a device for imparting radioactivity to an ingot in advance of a rotary hearth furnace. Radiation counter-tubes are located in advance of a taper mill and a continuous rolling mill respectively. Further counter-tubes are arranged in advance of a stretch reducing or sizing mill. A non-radioactive marking device is arranged in registry with the rolled stock and operatively coupled with said further counter-tubes and located downstream of the sizing mill.

REFERENCES:
patent: 3790398 (1974-02-01), Dijkstra

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