Stahlwerke Peine-salzgitter Ag

Other

Klaus Berner

Gustav Mahn

Paul Rheinlander

Klaus Schulz, Deceased

By Ingrid Ruhland, Legal Representative

Ingrid Ruhland, Legal Representative

The continuous refining of molten metal is carried out in a refining apparatus having communicating first and second refining stage spaces. Refining gas, such as oxygen, is blown into the molten metal in the presence of a slag layer on the molten metal. The molten metal and the slag are conveyed as two separate non-intermingled streams through the refining stage spaces, as distinguished from a slag-metal emulsion. The slag in the second refining stage space is caused continuously to flow back into the first refining stage space to form a slag layer on the molten metal in the first refining stage space. Refining gas is blown into the molten metal in the first refining stage space below the slag layer, and the molten metal is conveyed from the first refining stage space to the second refining stage space while preventing the flow of slag from the first refining stage space to the second refining stage space. Refining gas is blown onto the molten metal in the second refining stage space in the presence of slag so that a slag layer on the molten metal in the second refining stage space is formed. The molten metal and the slag are separated from each other after the molten metal has passed through the second refining stage space.

Apparatus for continuously refining molten metals

An ultrasonic testing apparatus which is mounted on the housing of a trimming device for one marginal portion of a sheet- or band-like workpiece moving lengthwise along a horizontal path. The testing apparatus has a deflector which is pivotably mounted on the housing by a hinge so that it can turn about a vertical axis and has ways for a pneumatic cylinder and piston assembly whose piston rod carries a roller follower movable at right angles to the path toward and away from engagement with one side of that marginal portion of a workpiece in the horizontal path which is about to be trimmed by the trimming device. The probe holder with the probe of the testing apparatus is mounted on a parallel motion mechanism which is carried by the piston rod and is biased by a spring so as to maintain the probe close to the one side of the one marginal portion of a moving workpiece when the latter is engaged by the roller follower. A spring automatically retracts the piston rod from the path in the event of malfunction of the cylinder and piston assembly, and the parallel motion mechanism carries a nozzle which discharges streams of compressed air serving to blow a liquid couplant off the one side of the workpiece downstream of the probe.

Apparatus for ultrasonic testing of marginal portions of metallic sheets

The disclosed process of continuously refining molten metal is carried out in a refining apparatus having communicating first and second refining stage spaces. Refining gas, such as oxygen, is blown into the molten metal in the presence of a slag layer on the molten metal. The molten metal and the slag are conveyed as two separate non-intermingled streams through the refining stage spaces, as distinguished from a slag-metal emulsion. The slag in the second refining stage space is caused continuously to flow back into the first refining stage space to form a slag layer on the molten metal in the first refining stage space. Refining gas is blown into the molten metal in the first refining stage space below said slag layer, and the molten metal is conveyed from said first refining stage space to said second refining stage space while preventing the flow of slag from said first refining stage space to said second refining stage space. Refining gas is blown onto said molten metal in said second refining stage space in the presence of slag so that a slag layer on the molten metal in said second refining stage space is formed. The molten metal and the slag are separated from each other after the molten metal has passed through said second refining stage space.

Growing community of inventors

Salzgitter-Lebenstedt, Germany

Klaus Berner