Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1975-04-15
1977-12-06
Vlachos, Leonidas
Metal founding
Process
Shaping liquid metal against a forming surface
164149, 164253, 164432, 164435, 164436, 164443, B22D 1106, B22D 2716
Patent
active
040611779
ABSTRACT:
In apparatus for the continuous casting of metal in strip form between moving belts, belt support means comprising a multiplicity of elements that are distributed crosswise and lengthwise of a belt path area beside the mold space and are individually yieldable against a loading force, permit close belt stabilization to a selected path while yielding locally under excess outward force by the belt such as caused by solidified metal. Arrangement of belt support and cooling means along the mold space in successive sections each individually adjusted in respect to one or more of the conditions of belt path taper; degree of compliance, if any, in the retention of the belt against the support; and cooling action; are such that these features, as well as provision, if desired, of local yieldability, permit accommodation of the apparatus to various requirements of casting operation.
A specific process for casting, well realized with the foregoing apparatus, includes controlling the stabilization of the belt along its path so that in a first zone where the metal is essentially liquid, the belt is held firmly against the supports, while in a second zone the belt may if necessary have soft support in the sense of locally following the surface shell of metal to avoid local impairment of cooling; this method may include provision of highly localized yieldability as by the above means, especially in later zones of the path where the metal completes solidification. Process improvement is further afforded, with a closed path for liquid coolant, by recirculating the liquid while controlling its temperature to a somewhat elevated level and if desired, adjusting its chemical character.
The apparatus also has means for adjusting the contour of the belt support sections transversely of the path, e.g. to afford a profile concave toward the mold space for better assuring a flat product, such means coacting especially with the individually yieldable support elements across and along the path. The belts travel around carriage structures supported in desired relation to each other, with simplified means for separating one carriage from the other, for servicing purposes.
REFERENCES:
patent: 2928148 (1960-03-01), Porterfield
patent: 3041686 (1962-07-01), Hazelett et al.
patent: 3426836 (1969-02-01), Altenpohl et al.
patent: 3452809 (1969-07-01), Dumont-Fillon
patent: 3502135 (1970-03-01), Wertli
patent: 3864973 (1975-02-01), Petry
patent: 3933193 (1976-01-01), Baker et al.
Alcan Research and Development Limited
Vlachos Leonidas
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