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Casting machine for production of casting bars in the shape of billets or blocks

a technology of casting machine and billet, which is applied in the field of casting machine, can solve the problems of increasing the cost of a corresponding installation

Inactive Publication Date: 2009-07-16
STREUBEL HANS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a casting machine that produces cast strands in the shape of billets or ingots. The machine has a continuous casting mold that deflects the cast strand in a horizontal casting direction. There is also a straightening region with roller pairs that have positive or negative diametrical regions to form the cast strand with projections or recesses. The soft-reduction region has at least one roller pair with thickness-reducing smooth rollers. The technical effect of this invention is to improve the quality and efficiency of the casting process by achieving better control over the shape of the cast strand during the straightening and soft-reduction stages.

Problems solved by technology

This results in increased costs of a corresponding installation.

Method used

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  • Casting machine for production of casting bars in the shape of billets or blocks
  • Casting machine for production of casting bars in the shape of billets or blocks
  • Casting machine for production of casting bars in the shape of billets or blocks

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Embodiment Construction

[0028]FIG. 1 shows a casting machine with a mold 1 to which a steel melt 10 is fed, and formation of a cast strand 2 beneath the mold. The strand 2 passes through a deflection section with a cast radius R from a vertical cast direction to a horizontal direction 13 with a tangent point 3. The tangent point 3 is located approximately in the center of a straightening region A with straightening rollers 4, 5, 6 and which is adjoined by a soft-reduction region B. In the soft reduction region B, soft reduction takes place which is effected with pairs 7, 8, 9 of thickness-reducing smooth rollers. During the soft reduction, the position of the lowest point of the liquid pool in the soft-reduction region B is determined with the aid of a computation model or measurement technique, e.g., by measuring the position or forces, with the roller pairs 7-9 being correspondingly adjusted.

[0029]All in all, the soft reduction is so effected by controlling the strand cooling or the cast speed that it st...

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Abstract

A casting machine for producing cast strands (2) in shape of billets or ingots includes a continuous casting mold (1) for forming a cast strand (2) that is deflected by a cast radius (R) from a vertical casting direction in horizontal casting direction (13), a straightening region (A) having straightening profiled roller pairs (4, 5, 6) with positive diametrical regions (h, b) or negative diametrical regions (−h, −b) for forming the cast strand with one or several projections (h, b) or recesses (−h, −b); and with at least one pair of straightening profiled rollers (4 to 6) provided on both sides of a tangent point (3) of the cast radius (R) and a soft-reduction region (B) adjoining the straightening region and having at least one roller pair (7, 8, 9) with thickness-reducing smooth rollers.

Description

RELATED APPLICATIONS[0001]This application is a division of application Ser. No. 11 / 807,141, filed May 24, 2007, which is a continuation-in-part of application Ser. No. 10 / 494,590, filed May 5, 2004.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to a casting machine for producing cast bars or strands in shape of billets or ingots, with the strands being guided between pairs of rollers.[0004]2. Description of the Prior Art[0005]It is known to reduce or to completely prevent segregation and the core porosity by soft reduction in casting installations. Generally, by “soft reduction” is understood reduction of a strand thickness starting in the region at which the solid fraction of a strand cross-section constitutes from 20% to 85%, and ending at a so-called “kissing” point, i.e., at a point of complete solidification. The reduction of the strand thickness is effected with one or, preferably, several pairs of rollers. The reduction of thickness in ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B22D11/12
CPCB22D11/1206
Inventor STREUBEL, HANS
Owner STREUBEL HANS