RU2173605C2 - Crystallizer for continuous ingot casting machine - Google Patents

Abstract

FIELD: metallurgy. SUBSTANCE: crystallizer has enclosure with copper walls equipped with cooling slot-type channels. Intermediate member is positioned between each copper wall and crystallizer enclosure so that it may be fixed on working copper wall and on crystallizer enclosure. Intermediate member is configured and sized so as to conform with shape of adjoining working wall. Cooling channels are partially running through intermediate member. Section area of each channel portion running through intermediate member is 0.1-2.0 of section area of channel formed in crystallizer wall. EFFECT: improved cooling of crystallizer and reduced consumption of copper. 2 dwg

Description

 The invention relates to the field of metallurgy, and in particular to continuous casting machines (CCM).

 Known mold caster containing a housing and copper working walls with drilled channels for cooling water (see, for example, V.M. Niskovsky and others. Machines for continuous casting of slab billets.- M .: 1991, p. 62 Fig. 28).

 A disadvantage of the known device is the significant consumption of expensive copper due to the need to make working walls with drilled channels from copper plates of large thickness (60 - 90 mm). However, at present, all domestic bloom and slab caster are equipped with crystallizers of precisely this design.

 Of the known devices, the closest to the proposed technical essence is a mold containing a casing and copper working walls, between which intermediate elements are mounted that can be mounted on the casing of the mold and the working wall, while the shape of the outer surface of the intermediate elements corresponds to the shape of the adjacent copper walls, and the mold has channels for cooling water (RU 2111082, B 22 D 11/04, 1998) - a prototype.

 Depending on the size of the cast billets, the working walls of such a mold can have an initial thickness of 30-50 mm, which significantly reduces the consumption of copper for the manufacture of the mold.

 A disadvantage of the known device is that the slotted channels for cooling water are made in the copper working walls of the mold, which leads to an unreasonably large loss of copper during their groove.

 The technical result of the invention is to save expensive copper in the manufacture of molds, increase the technical capabilities in the implementation of this design.

 The proposed mold of a continuous casting machine comprises a housing and copper working walls, between which intermediate elements are mounted that can be mounted on the mold body and the working copper wall, while the shape and dimensions of the outer surface of the intermediate elements correspond to the surface of the adjacent copper working walls. The proposed mold differs in that the channels for cooling water are formed by grooves made in the copper working walls and adjacent intermediate elements, while the ratio of the cross-sectional areas of the grooves made in the intermediate elements and copper working walls, respectively, is 0.1 - 2, 0.

 This ratio is optimal since with a further decrease in the ratio below 0.1, almost the entire cross-section of the groove will be in the copper wall, and this will accordingly lead to an increased consumption (loss) of copper when grooving, and an increase in the ratio of more than 2.0 will significantly reduce the efficiency of heat removal from copper walls due to the reduction of the heat-transfer surface area of the part of the grooves located in the intermediate elements.

 The invention is illustrated in the drawing, which as an example of a specific implementation depicts one of the walls of the proposed mold.

 In FIG. 1 is a side view of a wall, and FIG. 2 is a section AA in FIG. 1 - the implementation of the channel for cooling water.

 The wall of the mold contains a housing 1, a copper working wall 2 with channels 3 for cooling water and an intermediate element 4 located between them, the shape and dimensions of the outer contour of the intermediate element 4 correspond to the contour of the adjacent working wall 2.

 The fastening of the intermediate element 4 to the housing is carried out by the key 5 and fasteners 6. The fastening of the working wall 2 to the intermediate element 4 is made by the key 7 and fasteners 8. The seal between the working wall 2 and the intermediate element 4 is provided by a sealing cord 9 and rings 10 located along the contour of the joint located in element 4. The sealing of the places of supply and removal of cooling water between the housing 1 and the intermediate element 4 is provided by the sealing rings 11.

 In FIG. 2 shows the design of a cooling water channel. The channel is formed by grooves made in the copper working wall of the mold 2 and in the intermediate element 4 adjacent to it.

The proposed design of the mold will allow:
a) significantly reduce the consumption of expensive copper for continuous casting molds due to the use of relatively thin working walls and due to the implementation of cooling water channels with slit, formed grooves located in the copper walls and adjacent intermediate elements.

 b) to improve the cooling of the mold due to the implementation of cooling channels in the working wall and the intermediate element.

Claims (1)

 A mold of a continuous casting machine comprising a housing and copper working walls, between which intermediate elements are mounted that can be mounted on the mold body and the working copper wall, as well as cooling water channels, and the shape and dimensions of the outer surface of the intermediate elements correspond to the surface of adjacent to them copper working walls, characterized in that the channels for cooling water are formed by grooves made in copper working walls and adjacent to them intermediate elements, while the ratio of the cross-sectional areas of the grooves made in the intermediate elements and copper working walls, respectively, is 0.1 - 2.0.

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