Metal founding – Means to shape metallic material – Continuous or semicontinuous casting
Reexamination Certificate
1999-07-02
2001-01-16
Batten, Jr., J. Reed (Department: 1722)
Metal founding
Means to shape metallic material
Continuous or semicontinuous casting
C164S418000
Reexamination Certificate
active
06173756
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a broad side element for a slab mold including a cast plate having opposite inner and outer surfaces, with the broad side element having upper and lower regions with at least the upper region having a middle portions and two side portion located on the opposite sides of the middle portion.
2. Description of the Prior Art
Such broad side elements for slab molds are generally known. They are particularly used in so-called compact strip production plants for slab thicknesses from 40 to 150 millimeters.
In the broad side elements of the prior art, a plurality of cooling grooves are formed in the cast plate in several operational steps. This formation of cooling grooves is associated with increased manufacturing costs. The cooling grooves are covered with a water box which is supported on the inner surface of the cast plate and is screwed thereto. The draw-back of this technology consists in that threaded inserts which are formed of steel are inserted into the cast plate which conventionally is formed of copper. When the cast plate is closed, a large quantity of copper is contaminated with steel which makes the reuse of the cast plate very difficult. In addition, the use of the threaded inserts in the copper plate is also associated with increased costs.
Accordingly, an object of the present invention is to provide a broad side element for a slab mold in which the cooling grooves can be formed with reduced costs and the contamination of the cast plate with steel is minimal which permits an easy reuse of the cast plate.
SUMMARY OF THE INVENTION
This and other objects of the present invention, which will become apparent hereinafter, are achieved by providing on the inner surface of the cast plate grooves with undercuts for forming cooling channels, with the grooves being formlockingly covered with inserts which are inserted in the undercuts.
In case when at least the middle portion of the upper region bulges with respect to the lower region, the inserts at least in the middle portion are divided into upper and lower insert sections.
When the inserts are provided on their sides opposite to the cooling channel-forming grooves with bridging shoulders, respectively, adjacent inserts adjoin each other, whereby a complete covering of the cast plate takes place.
When the inserts form a separate insert group, the broad side element can be more quickly mounted. In particular, the lower insert sections can form a separate lower insert section group. Likewise, the insert sections provided in the side portions of the upper region can form two side, insert section groups.
Because the heat removal need be effected only up to the grooves or the cooling channels and not further, the inserts can be made of steel, whereas the cast plate, preferably, is made of copper.
The inserts are preferably secured in the grooves with screws. To this end, they can be provided on their sides remote from the grooves with a thread in which a connection bolt is received.
The novel features of the present invention, which are considered characteristic for the invention, are set forth in particular in the appended claims. The invention itself, however, both as to its construction so to its mode of operation, together with additional advantages and objects thereof, will be best understood from the following detailed description of preferred embodiment when read with reference to the accompanying drawings.
REFERENCES:
patent: 3866664 (1975-02-01), Auman et al.
patent: 4009749 (1977-03-01), Alberny
patent: 2212084 (1989-07-01), None
patent: 561612 (1977-07-01), None
patent: 573924 (1986-08-01), None
patent: WO95/21036 (1995-08-01), None
patent: WO95/26839 (1995-10-01), None
patent: WO97/43063 (1997-11-01), None
Batten, Jr. J. Reed
Brown & Wood LLP
SMS Schloemann-Siemag AG
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