RU2243060C1 - Apparatus for semi-continuous casting of arc-shaped reinforced billets - Google Patents

Abstract

FIELD: semi-continuous casting of arc-shaped reinforced billets such as sections of band treads.

SUBSTANCE: apparatus includes cooled mold and cooled mandrel with vertical separating inserts and seed with rod. Said inserts have grooves and fastening members for reinforcement, horizontal annular end insert with head cavities and supporting outer and inner flanges. Horizontal annular end insert is movably mounted on mandrel with possibility of sliding on walls of mandrel and mold and with possibility of engaging of outer and inner flanges respectively with upper bases of mold and mandrel. Head cavities are open at side of mold wall for providing continuous feed of melt. Protrusions-recesses, possibly wedge-shaped ones are made on walls of head cavity for forming on heads mutually closing recesses-protrusions.

EFFECT: lowered labor consumption, enhanced quality of billets, possibility for separating head parts from billets at casting process.

8 dwg

Description

The invention relates to semi-continuous casting of metals and can be used for casting (casting) arcuate reinforced blanks, for example sections of bracelet protectors.

Known mold (SU 1760687 A1) for casting arcuate blanks containing rotating around a horizontal axis ring with flanges and adjacent to it a fixed arcuate cooled wall. On the outer surface of the ring along the generatrix, partitions are made, in the middle part of which profitable cavities are made.

The disadvantage of the mold is that the profitable part of the workpieces remains on them after casting, and their separation from the latter is associated with significant labor costs.

It is also known a device (SU 1763085 A1) for semi-continuous casting of hollow billets containing cooled mold and mandrel, seed and rod. In the annular cavity between the mold and the mandrel are placed dividing inserts connected to the mandrel and movably with the mold.

The disadvantage of this device is the inability to cast billets without the formation of shrinkage shells in their upper parts, which affects their quality.

The objective of the invention is to reduce labor costs and improve the quality of the workpieces.

EFFECT: separation of profitable parts of billets during their casting and improvement of their quality.

The technical result is achieved in that in a device for semi-continuous casting of arcuate reinforced billets containing a cooled mold and a mandrel with vertical separation inserts fixed to it with grooves for reinforcement, a horizontal annular end insert provided with profitable cavities and supporting outer and inner flanges mounted on the mandrel movable with the possibility of sliding along the walls of the mold and the mandrel and with the possibility of interaction of the supporting outer and inner flange , Respectively, with the upper base of the mold and the mandrel, and seeded with a rod. Profitable cavities of the horizontal annular end insert are made open from the side of the mold wall and are equipped with supporting protrusions-recesses, which are capable of generating profitable supporting recesses-protrusions.

The drawings show the proposed device.

In Fig.1 is a General view of the device for semi-continuous casting of arcuate reinforced blanks, Fig.2 is the same as in Fig.1, a top view, Fig.3 is a horizontal annular end insert, view along arrow C, in Fig. 4 is a general view of the device during the initial casting period, FIG. 5 is a general view of the device at the end of the casting; FIG. 6 is a general view of the device during the period of separating profits from workpieces; - profit, separated from the workpiece and extracted from the profitable cavity.

A device for semi-continuous casting of arcuate reinforced billets (Fig. 1) contains a water-cooled mold 1 mounted on a collector 2, a water-cooled mandrel 3 with vertical spacer inserts 4 fixed thereon with grooves 5 for laying reinforcement and a horizontal ring end insert 6 mounted on it. 3 is rigidly connected to the seed 7, mounted on the rod 8 and provided with a collector 9. The horizontal annular end insert 6 is provided with profitable cavities 10 (Figs. 1 and 2) and supporting flanges: external m 11 and internal 12. Profitable cavities 10 of the horizontal annular end insert 6 (Figs. 1, 2, 3) are made open from the side of the wall 13 of the mold 1, and protrusions-recesses 15 are made on their walls 14 (Fig. 3). Wall 13 mold 1, the wall 16 of the mandrel 3, the vertical dividing inserts 4 and the upper base 17 of the seed 7 form the forming cavity 18.

The device operates as follows (figure 4): the seed 7 with the mandrel 3 through the rod 8 is introduced into the mold 1. In this case, the horizontal annular end insert 6 is mounted on the mandrel 3, resting on the upper base 19 of the inner flange 12. In the grooves 5 of the vertical separation of inserts 4, embedded reinforcement 20 is installed. Water is supplied to the collectors 2 and 9, by means of which the crystallizer 1 and the mandrel 3 are cooled. The melt is fed into the forming cavities 18 from the furnace chute 21 from the furnace 22. Seed 7 with mandrel 3 by means of a rod 8 p move along arrow A, while in the forming cavities a blank 23 begins to form. When the outer flange 11 reaches the horizontal annular end insert 6 of the upper base 25 of the mold 1 (Fig. 5), the seed 7 stops moving with the mandrel 3 and the melt flows into the forming cavity 18. At the same time, profitable parts 24 were formed on the shaped workpieces 23. After crystallization of the workpieces 23 with profitable parts 24 was completed, the water supply to the collectors 2 and 9 was stopped and the seed 7 with the mandrel 3 were removed m rod 8 of the mold 1 (Fig.6). While the horizontal annular end insert 6 by means of the outer flange 11 is supported on the upper base 25 of the mold 1.

Thus, the separation of the workpiece 23 from the profitable part 24.

After removing the workpiece 23 (Fig.7) from the seed 7 and the mandrel 3 and removing the profitable part 24 from the profitable cavities 18 of the horizontal annular end insert 6 (Fig.7), the cycle repeats.

Thus, the proposed device for semi-continuous casting of arcuate reinforced billets allows for continuous feeding of the billet at the end of its casting and separation of the profitable part from it.

Claims (1)

A device for semi-continuous casting of arcuate reinforced billets, for example sections of bracelet protectors, containing a cooled mold and a mandrel with vertical spacer inserts fixed to it with grooves for reinforcement, a horizontal annular end insert with profitable cavities and a seed with a rod, characterized in that the horizontal annular end insert mounted on the mandrel movably with the possibility of sliding along the walls of the mandrel and mold and equipped with supporting external and internal fl nets made with the possibility of interacting with the upper bases of the mandrel and mold, while its profitable cavities are made open from the side of the mold wall and have supporting protrusions-recesses, for example wedge-shaped, made with the possibility of profitable formation of interlocking supporting recesses-protrusions.

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