Heraeus Electro-nite International N.v.

Robert Charles Whitaker

Martin Kendall

Marc Straetemans

Dominique Feytongs

Jack Childs

Francis Dams

Frank Seutens

Andrew David Butler

A method for feeding a cored wire into molten metal contained in a vessel comprises positioning the cored wire at a first position wherein a leading tip of the cored wire is proximate an entry point of the vessel, the entry point being above a surface of the molten metal, the cored wire comprising an optical fiber and a cover laterally surrounding the optical fiber; feeding the cored wire at a first speed for a first duration from the first position to a second position wherein the leading tip of the cored wire is immersed within the molten metal and lies within a measuring plane, such that a leading tip of the optical fiber projects from the cover and is exposed to the molten metal; and subsequently feeding the cored wire at a second speed for a second duration to take a first measurement of the molten metal.

Method for measuring a temperature of a molten metal bath

A consumable cored wire for measuring a temperature of a molten steel bath includes an optical fiber and a cover laterally surrounding the optical fiber in a plurality of layers. One layer is a metal pipe, also called metal jacket or metal tube. An intermediate layer, also called filler, is arranged beneath the metal tube. The intermediate layer is a rope.

Cored wire, method and device for the production of the same

An optical cored wire includes an optical fiber and a cover laterally surrounding the optical fiber. The cover surrounds the optical fiber in a plurality of layers. One layer is a metal coat, also called a metal jacket or a metal tube. An intermediate layer, also called filler, is arranged beneath the metal tube. The intermediate layer is formed from a thermal insulating material having a melting point in the temperature ulnae of 1000&#xb0; C. to 1500&#xb0; C., such that the pieces of the intermediate layer are fluid upon exposure to the molten metal temperatures and a portion of the intermediate layer, the entire intermediate layer and/or the cover laterally surrounding the optical fiber can melt immediately upon immersion into the molten metal or immediate exposure to the molten metal.

Consumable optical fiber for measuring a temperature of a molten steel bath

A method is provided for measuring a parameter of a molten metal bath by an optical fiber surrounded by a cover. The optical fiber is immersed in the molten bath, and the radiation absorbed by the optical fiber in the molten bath is fed to a detector, wherein the optical fiber is heated when immersed in the molten bath. The heating curve of the optical fiber has at least one point P(t, T), wherein the increase &#x394;Tin the temperature T of the optical fiber over the time &#x394;t in a first time interval t&#x2212;&#x394;t up to the temperature Tis smaller than the increase &#x394;Tin the temperature of the optical fiber over the time &#x394;t in an immediately following second time interval t+&#x394;t.

Temperature measuring method in molten metal bath

A guide system for signal lines includes a guide tube, through which the signal lines are guided, a cooling system which laterally surrounds the guide tube and has at least one coolant chamber and at least one inlet and at least one outlet for the coolant. The coolant chamber is tubular in construction and is hermetically sealed by a seal at least at one end face.

Guide system for signal lines, device for measuring temperatures and/or concentrations, and use of the system and device

A method is provided for measuring a temperature of a molten metal bath by an optical fiber surrounded by a cover. The optical fiber is immersed in the molten bath, and the radiation absorbed by the optical fiber in the molten bath is fed to a detector, wherein the optical fiber is heated when immersed in the molten bath. The heating curve of the optical fiber has at least one point P(t, T), wherein the increase &#x394;Tin the temperature T of the optical fiber over the time &#x394;t in a first time interval t&#x2212;&#x394;t up to the temperature Tis smaller than the increase &#x394;Tin the temperature of the optical fiber over the time &#x394;t in an immediately following second time interval t+&#x394;t.

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Chesterfield, United Kingdom

Robert Charles Whitaker