SU1588501A1 - Laddle for blowing metal through slide gate - Google Patents

Abstract

This invention relates to metallurgy, in particular to the blowing of metal in a ladle with various gases and subsequent casting. The purpose of the invention is to simplify the design and operation and improve the quality of the metal by improving the dissolution of ferroalloys and uniform distribution of chemical elements in the metal. A metal purge bucket through a slide gate contains movable and fixed refractory plates and a reservoir glass enclosed in metal clips, a pouring ladle cup, a hollow rod for inserting reagents placed in the glass manifold channels, refractory plates and a pouring ladle cup. The bucket is equipped with a metal rod-cooler, made in the form of a rod with a length of at least 0.7 of the length of a hollow rod and a diameter of 0.3-0.7 of the diameter of the channel of the hollow rod and placed in the latter. The floor of the rod in the channels is installed with a gap of 0.5-0.9 in diameter of the channel of the pouring glass, the section of the gap located between the rod, the fixed refractory plate and the filling glass is filled with refractory powder. The floor bar is provided with a support element, made in the form of a covering wheel and located at the level of the fixed refractory plate. 1 hp f-ly, 1 ill.

Description

This invention relates to metallurgy, in particular to the blowing of metal in a ladle with various gases and subsequent casting.

The purpose of the invention is to simplify the design and operation and improve the quality of the metal by improving the dissolution of ferroalloys and uniform distribution of chemical elements in the metal.

The invention is illustrated in the drawing.

The bucket in the refractory lining of the bottom contains a hollow metal rod 1, in which a metal cooler rod 2 is placed. The floor rod 1 passes through the channel of the ladle

the cup 3, the holes in the upper fixed and lower movable refractory plates (4 and 5) of the slide gate and the channel of the cup — collector 6.a Plates 4 and 5 and cup-collector 6 are enclosed in metal holders 7 and 8. The rod 1 rests on the lower refractory plate 5 with the help of the support element 9, made in the form of a covering ring. The ring is filled with mullite cotton 10. The channel of the glass 3 is filled with refractory powder 11. A gas pipeline 12 is connected to the hollow shank. The entire assembly is connected from the bottom to the refractory lining 13 of the bottom of the pouring ladle.

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Bucket prepared to work as follows.

In the hollow rod 1, the rod-cooler 2 gets up and is fixed therein, bending both ends of it onto the ends of the rod 1. Other ways can be fixed, for example, using transverse guides welded in several places or, bending the rod in several places before contact with the inner surface of the hollow rod.

Cotton 10 is placed in the support element 9 to prevent the refractory powder 11 from spilling.

The open spherical slide is inserted into the bottom assembled-rod 1. In such a way that the supporting element 9 is located above the bottom plate 5. The plate 5 is closed against the stop in the rod 1, and the last is fixed by the supporting element 9 on the extended part of the lower plate 5 .

Refractory powder 11, staurolite concentrate or chamotte powder are poured into the canal of glass 3 from the top. A gas line 12 is connected to the hollow rod 1 from below for the supply of gas. Device preparation: It is not to work.

Preparatory sgo; a single teeming ladle is placed on the stand for melting from the furnace. Prior to the release of melting, argon is fed into the ladle. The gas through the pipeline 12 passes through the gap between the hollow w-bar 1 and the metal cooler 2 and then enters the liquid metal.

After the end of the metal release, the gas supply is stopped. The liquid metal rushes into the hollow rod 1 and is in contact with the cooler rod 2, is cooled and solidifies quickly, without leaving the lower end of the hollow rod.

There is no need to close the gate for cutting the hollow rod, which often leads to breakage of the slide plates.

The casting KOBUJ is fed to the molds on the casting area, after having disconnected the flexible gas pipe section 12. Installing the ladle over the mold, opening from the fully slide gate. Then, it is punctured or removed from the bed 10. The refractory powder itself is poured out from the glass of glass 3 and a stream of liquid metal appears after it. Ds., P its metal casting through a slide gate is made in the usual order. The use of oxygen for burning the channel of the glass is absent.

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A ladle for gas purging and casting has been tested on a pilot scale. Argon was used for purging, the flow rate of which was 5-10 m per 300 tons of metal in the ladle. The metal of the following grades was purged: 08kp, 08yu, 09G2, 09G2S, 10G2S1, 10KhNDP, 16GS, st.ZSP and others. The diameter of the channel is casting. cup was 80 mm. The outer diameter of the hollow rod - 17 mm, inner diameter - 13 mm. The diameter of the metal mold core is 6.5 mm, the gap between the cup and the hollow rod is 63 mm.

It was treated with argon in ladles 274 melting. After the end of the purge, the liquid metal penetrated into the purge rod and froze in it in all 274 heats. Emergency care of the metal from the bucket through the pulverized device was not. Oxygen for burning the canal of the glass was not used before the start of steel casting, since after pouring out the refractory powder from the gap, the steel was cast from a corrosive mold into a mold that began to sarlopylate.

Claims (2)

Invention Formula . A metal scavenging bucket through a slide gate containing movable and non-moving fire-resistant plates and a collector glass enclosed in metal holders, a pouring bucket, a hollow rod for inserting reagents, measured in the canal-glass channels, refractory plates and a pouring bucket .in the glass, characterized in that, in order to simplify the design and operation and improve the quality of the metal by improving the dissolution of ferroalloys and uniform distribution of chemical elements in the metal, it is supplied with metal a fridge cooler with a length of at least 0.7 times the length of a hollow rod, and diameter 0,3--0,7 diaglot rods barbell 0.5--0.9 canal hollow and placed in it, and the floor in the duct. Moreover, the area of dawn is distributed between the igganga, the fixed fireplate and the glass with a refractory powder. ; i. glasses, married stubborn filled 2. Bucket gyu l. , characterized in that the floor bar has a supporting element, complete in B1 {encompassing its rings and located at the level of the fixed refractory plkt.