The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1993
Filed:
May. 07, 1992
Manfred Fessel, Rhede, DE;
Wilfried Eisenacher, Borken, DE;
Foseco International Limited, Birmingham, GB;
Abstract
A method for producing nodular or compacted graphite iron castings in a mould having a sprue, an ingate and a mould cavity, having a first part below and a second part above the level of the ingate, comprises delivering particulate magnesium-containing and silicon-containing treatment agent from a dispenser into a stream of molten metal entering the sprue such that the treatment agent is added at a constant rate of addition while the first part of the mould cavity is filled with iron, and at a decreasing rate while the second part is filled. The addition of the treatment agent is controlled by means of apparatus comprising a container, a measuring and data capture device connected via signal transforming means to a control means, conveyor means located below the container and connected to the signal transforming means, and means for injecting the particulate treatment agent into the metal stream.