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.

Combination gas/oil burner

Abstract: A burner suitable for firing a gaseous fuel, or a combination of a gaseous and a liquid fuel, with the gas being used to atomize the liquid fuel. The burner includes an inner liquid fuel tube which is surrounded by a primary gas tube that is positioned within a secondary gas tube. The liquid fuel tube is connected to a source of liquid fuel and at its outer end has a nozzle with several discharge orifices. The primary and secondary gas tubes are each connected to a source of gaseous fuel and each has a discharge opening at its outer end. The secondary gas tube discharge opening is of annular shape and surrounds the discharge opening of the primary gas tube. The liquid fuel tube nozzle defines a constricted discharge passage with the primary gas tube discharge opening. Liquid fuel passing into this passage from the liquid fuel tube nozzle is atomized by primary gas which also passes through the passage, and the atomized liquid fuel and primary gas pass from the burner through the discharge opening at the outer end of the primary gas tube. Secondary gas discharged from the secondary gas tube discharge opening impinges on the liquid fuel primary gas mixture discharged from the discharged opening of the primary gas tube. A pressure regulator maintains constant the pressure of the primary gas passing into the primary gas tube, over the range of total gas flow rates, assuring adequate primary gas pressure and flow for atomization of the liquid fuel, even at low total gas flow rates. The burner has given excellent results in atomizing fuel oil with gas flows as low as 15 percent of the B.t.u. fired at a high firing rate (30 g.p.h. oil equivalent total fuel in the case of the burner tested) and also with 50 percent gas at a low firing rate (10 g.p.h. equivalent total fuel.

Oscillating rotary shear

Abstract: This invention pertains to metal shearing apparatus, and more particularly to a rotary shear for cutting metal sheets, strips, bars and the like into sections of predetermined length while the stock is in motion. 6 On the present rotary shears there is only one length of cut at which the peripheral...

Apparatus for the controlled cooling of hot rolled steel samples

Abstract: A method and apparatus for cooling samples of hot rolled steel sections. A programmable controller directs a predetermined sequence of air and cooling water sprays against the sample while held in a closed container. The controlled cooling of the sample prevents dimensional distortion of the sample so that accurate measurements of the finished hot rolled steel section can be determined.

Method for producing nonoriented silicon electrical sheet steel

Abstract: A nonoriented electrical sheet steel containing not more than 0.03 percent carbon and from about 0.5 percent to about 4.5 percent silicon and a process for manufacturing said electrical sheet steel. The process includes preparing low carbon sheet steel by conventional methods of melting, pouring and rolling, coating the surfaces of the sheet steel with a layer of silicon-containing powder, compacting the powder onto the sheet and heat treating the composite thus formed in a protective environment to cause a solid-state diffusion of silicon into the sheet steel. The core losses of electrical sheet steel thus prepared are equivalent to or better than electrical sheet steel of the same silicon content and gage prepared by additions of silicon to the steel while it is in a molten state.

Off-gas hood for a basic oxygen furnace and method of repair

Abstract: The invention is directed to water-cooled furnace hoods that exhaust gases away from a work area, and in particular, it is directed to an off-gas hood for use with a basic oxygen furnace (BOF). The furnace hood includes an assemblage of panels fastened together to form a flue positioned above a BOF at a location to receive gases generated by the furnace. Each panel includes an inlet header for receiving cooling water, an outlet header for discharging cooling water, and a plurality of tubes, such as a tube-bar-tube membrane, extending between the inlet and outlet headers to distribute cooling water between the headers. Jumper pipes extend between outlet headers and inlet headers located in adjacent panels. The jumper pipes distribute cooling between adjacent panels and thereby provide a continous flow of cooling water along the length of the flue. The invention is also directed to a method of replacing the panels located in the assemblage of panels that make up the flue.