Method for producing cast molded parts as well as cast molded parts produced according to the method
a technology of casting molded parts and production methods, which is applied in the direction of manufacturing tools, foundry molds, manufacturing tools, etc., can solve the problems of damage to parts of the installation, molten metal can run uncontrollably from the casting cavity,
Inactive Publication Date: 2011-03-10
KME GERMANY GMBH & CO KG
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Benefits of technology
[0009]Using this as the starting point, the present invention is based on the objective of optimizing a method for producing cast molded parts, in particular for producing blocks for side dams of twin-band casting systems, such that the wear of the casting surfaces coming into contact with molten metal sets in later and progresses more slowly, so that a cast metal band featuring a perfect surface quality is able to be produced over a longer period of production using the cast molded parts. Furthermore, a cast molded part having improved properties is to be provided.
Problems solved by technology
If such cracks caused by thermal shock do appear, the respective form block will fall out of the chain after even a short period of time and molten metal is able to run uncontrollably from the casting form cavity and damage parts of the installation.
During the forging of plates from an unworked cast piece, the net-like distribution of the intermetallic primary phases of the casting state is usually removed only insufficiently since the overall deformation degree is limited, and the plate is formed in approximately the same way in the longitudinal and the transverse direction.
Method used
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Embodiment Construction
[0014]The objective underlying the present invention is achieved in that selective hot deformation is used to orient the intermetallic primary phases included in the copper alloy in such a way that a casting surface, which comes into contact with the molten metal, of a cast molded part that is produced from the ironed cast ingot is selected to be at an angle of 90°±10°, i.e., essentially perpendicular, to the ironing direction of the cast ingot. “Essentially perpendicular” as used in the following text means an angle of 90±10° relative to the ironing direction of the cast ingot. Perpendicular denotes an angle of 90°.
[0015]The essential aspect in this procedure is that the hot shaping of the cast ingot not only produces the fine-grained structure recrystallization of the originally coarse-grained casting structure, but also a distinct fiber orientation featuring a reduction in size and an alignment of the intermetallic primary phases in line with these fibers. In this context it is i...
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Abstract
The invention relates to a method for the production of castings made of a copper alloy comprising silicon, nickel, chromium, and zirconium, and also inter-metal primary phases, wherein an ingot is drawn by means of hot forming in only one direction at a ratio of at least 4:1, wherein a casting surface of a casting produced from the drawn ingot, said surface coming into contact with a metal melt, is substantially selected perpendicular to the drawing direction of the ingot. A casting produced in this manner is characterized by high wear resistance and increased service life, particularly when used as a block of a side bank of a double strip casting system.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a method for producing cast molded parts from a copper alloy containing silicon, nickel, chromium and zirconium as well as intermetallic primary phases. Furthermore, the present invention relates to cast molded parts produced according to this method.[0003]2. Description of Related Art[0004]Published European patent document EP 0 346 645 B1 describes the use of a curable copper alloy made up of 1.6 to 2.4% nickel, 0.5 to 0.8% silicon, 0.01 to 0.20% zirconium, the remainder being copper including production-related impurities and the usual processing additives, as material for producing cast molded parts, which are subjected to permanently changing thermal stressing during the casting process, in particular in the form of blocks for side dams of twin-belt casting systems. The capacity of twin-belt casting system depends considerably on the proper functioning of the side dam chain formed b...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B22D23/00C22C9/06B22C23/00B22D25/02
CPCB22C9/061B22D11/059C22F1/08C22C9/06B22D11/066
Inventor HELMENKAMP, THOMASRODE, DIRKNIEMANN, MARKUS
Owner KME GERMANY GMBH & CO KG