RU2048242C1 - Continuous billet casting multiple-pass crystallizer - Google Patents

Abstract

FIELD: continuous horizontal casting of ferrous and nonferrous metals in foundry on casting lines for continuous casting of specific profile billets. SUBSTANCE: crystallizer has water-cooled shell and graphite inserts with channels shaped in accordance with profile of billets to be cast. Crystallizer passes are positioned in two horizontal planes with individual cooling of each graphite insert in common cooling shell. Graphite inserts are arranged so that horizontal projection of a bundle of drawn billets defines common plane without gaps and overlap of projections of each billet. EFFECT: increased efficiency and enhanced reliability in operation. 2 dwg

Description

 The invention relates to metallurgy, in particular to equipment for continuous horizontal casting of ferrous and non-ferrous metals, and can be used in a foundry on continuous casting lines of special preparations of various profiles.

 Known multi-crystallizer for continuous casting [1] the working walls of which are made with internal symmetrical partitions, in which to increase productivity and yield metal. The working walls are additionally equipped with guides and stops. Partitions are installed with a gap between the limiters and with the possibility of moving along the guides.

 A disadvantage of the known multi-armed crystallizer is the complexity of the structural implementation, due to the additional equipment of the walls with guides and stops and the installation of internal symmetrical partitions between them.

 Also known is a multi-strand mold for continuous casting [2] comprising a cooled case and a monoblock with circumferential casting channels made with the same pitch.

 A disadvantage of the known multi-strand crystallizer is a decrease in productivity due to insufficient heat removal from the inner zone of the heat unit due to the design with the location of the casting channels for streams when pulling blanks around the circumference.

 The closest in technical essence to the proposed one is a multi-strand mold for continuous casting of workpieces [3] containing a water-cooled body and graphite inserts arranged in a horizontal row with streams corresponding to the profile of the cast workpieces.

 A disadvantage of the known multi-strand mold is a decrease in productivity due to uneven cooling of the workpiece around the perimeter and the number of streams limited by the width of the housing.

 The purpose of the invention to increase the performance of continuous casting.

 The goal is achieved in that a multi-strand mold for continuous casting of billets on horizontal type plants, containing a water-cooled case and graphite inserts arranged in a horizontal row with streams corresponding to the profile of the cast billets, is equipped with an additional row of graphite inserts arranged staggered parallel to the first row. Each insert is made with individual cooling channels. Horizontal projections of the profiles of diagonally adjacent streams of both rows are located close to each other without a gap and overlap.

 The implementation of multi-strand mold with the location of the streams in two horizontal planes provide an increase in continuous casting due to more uniform cooling equidistant solidified metal from the cooling medium. The arrangement of the graphite inserts in such a way that the horizontal projection of the beam of elongated blanks forms a single plane without gaps and mutual overlap of the projections of each of the blanks provides an extension of functionality by rebuilding blanks of various profiles into one plane to facilitate subsequent separation of all blanks aligned in one row at a time.

 In FIG. 1 depicts a multi-coil mold, front view; figure 2 section aa in figure 1.

 A multi-walled crystallizer contains a water-cooled case 1 made completely welded with graphite inserts 2 for arranging streams in two horizontal planes I-I and II-II, with individual cooling of each graphite insert in a common case. Graphite inserts are arranged in such a way that the horizontal projection of the beam of elongated blanks forms a single plane without gaps and mutual overlap of the projections of each blank, as shown in FIG. 1 dashed lines. The base of the housing is a mounting plate 3, in which there are holes 4 for mounting the mold on the body of the metal receiver. In the case of the mold are also installed nozzles with fittings for supplying cooling water.

PRI me R. The mold is made of a solid welded body, where L ₁ -L ₂ -L ₅ design dimensions, L ₃ = 200 mm for the IV size of the workpiece, D _{n the} outer size of the graphite insert, L _n = 0,5 L ₃ , L ₆ = 20 mm , L ₇ = 0.8 L ₆ δ ₁ = 10 mm, δ ₂ 8 mm, δ ₃ 10 mm, δ ₄ = 25 mm.

 The use of the invention allows to increase the productivity of the continuous casting line due to the location of the streams in two horizontal planes with individual cooling of each insert in a common cooling casing, to expand the functionality by rebuilding blanks of various profiles in one plane to facilitate their subsequent separation, to simplify the design by performing each graphite inserts in the common cooling casing and increase operational safety due to the separation of the monolith graph separate insert for each stream separately.

Claims (1)

 MULTI-FUNCTIONAL CRYSTALIZER FOR CONTINUOUS PREPARATION OF PREPARATIONS on horizontal type plants, containing a water-cooled case and graphite inserts arranged in a horizontal row with streams corresponding to the profile of the cast billets, characterized in that it is equipped with an additional row of graphite inserts arranged parallel to the first row in the first row in this order each insert is made with individual cooling channels, and horizontal projections of the profiles of diagonally adjacent streams of both rows are located laid close to each other without a gap and overlap.

Images