Bethlehem Steel

About: Bethlehem Steel is a based out in . It is known for research contribution in the topics: Coating & Corrosion. The organization has 1529 authors who have published 1559 publications receiving 19098 citations. The organization is also known as: Bethlehem Steel Corporation.

Apparatus for retrieving a slag sample during a steelmaking operation

Abstract: Apparatus for retrieving a sample of slag from the surface of molten steel contained in a ladle. A hoist positioned above the ladle lowers and raises an elongated metal rod which has cardboard and metal sleeves surrounding the lower portion of the elongated metal rod. A clean sample of molten slag tightly adheres to the metal sleeve as it is raised from the molten slag layer. The metal sleeve and slag sample are easily removed from the elongated metal rod for analysis.

Method and apparatus for eliminating crescent formation in a reduction mill

Abstract: The apparatus and method for eliminating crescent formation in a steel strip reduction mill includes a strip tension monitor which measures the tension between the stands and transmits the measured tension to a controller. A roll speed monitor for the driven roll of the stands transmits data to the controller indicative of the roll speed. A tail end detector is positioned upstream of the upstream stand for detecting the tail end of the strip and for transmitting that information to the controller. A controller receives the data and calculates a target interstand strip tension when the tail end is sensed and causes a speed controller to increase the rotational speed of the rolls and to thereby decrease the strip tension until such time as the measured tension equals the target interstand tension.

Method of and apparatus for treating sheet metal

Abstract: The present invention relates to methods of and apparatus for conditioning mild steel sheets, strips, and analogous thin flat articles for subsequent fabrication into articles of manufacture. A large quantity of steel sheets or strips having a carbon composition in the neighborhood of A-% are...

Adapting Branch-and-Bound for Real-World Scheduling Problems

Abstract: Many sequencing and scheduling problems can be formulated as 0-1 integer programs and, in theory, solved using a branch-and-bound approach. In practice, real-world instances of these problems are usually solved using heuristics. In this paper we demonstrate the benefits of incorporating an intuitive, user-controlled variable-tolerance into a depth-first branch-and-bound algorithm. The tolerance comprises two components: a variable depth tolerance and a variable breadth tolerance. A sample scheduling problem is thoroughly analysed to illustrate empirically parameter impact on solution quality and execution time. Then, results based on several real-world problems are discussed.