SU1079347A1 - Apparatus for metal casting - Google Patents

Abstract

1. A DEVICE FOR CASTING METALS containing intermediate. water cooler 1 "a heat remover having through channels for supplying gas to a metal jet, characterized in that, in order to eliminate metal sticking to the heat remover and improve the quality of the internal structure of the workpieces, the working walls of the heat remover are made of a section in which gaps between non-metallic materials are installed and gas feed channels. 2. The device according to claim 1, in accordance with the fact that the number of sec9. working walls are made odd.

Description

WITH

with

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The invention relates to metallurgy, and more specifically to the casting of metals and alloys.

A device is known for pre-crushing and cooling on a cooled surface of a jet of liquid metal, which enters the former (mold, mold, mold) in the form of a double-sided diffuser, provided with a rotational drive about the vertical axis. The metal stream falls on the wall of the diffuser, which simultaneously serves coolant, and the crushed and cooled drops from the diffuser fall into the former C13.

The disadvantages of this device are the cumbersome design, explosiveness (supply of metal to the liquid cooler) and the lack of means to protect the metal jet from secondary oxidation.

A device for crushing a melt jet in the form of a shell with a grating made of pipes filled with coolant C23 is known.

The disadvantage of this device is the lack of a means of protecting the jet from oxidation. In addition, sticking of frozen drops of metal on the grate tubes is not excluded. I It is known a device in the form of a system of water-cooled plates above a crystallizer, equipped with a mechanism for moving them along and across the NW jet.

However, this device has the same major drawback as the previous ones: the casting is conducted by an open jet, leading to the secondary oxidation of the metal. The problem of manufacturability has not been solved: the heights of the entire device, protecting the surrounding from splashes and thermal radiation.

The closest to the proposed technical essence and the achieved result is an intermediate heat remover having water-cooled working walls equipped with through channels for supplying the sputtering gas to the stream of metal C4.

The disadvantages of the known device are the sticking of metal onto the walls of the heat remover and the blocking of channels for the diffusing gas by the Metal.

The elimination of adhesion of sputtered metal particles on cooled surfaces can be achieved by means of their vibration with a displacement vector perpendicular to this surface.

Posting a vibration to a cooled surface with a closed loop, as in the prototype (where it is indicated that the intermediate heat sink is an intermediate crystallizer.

i.e., a structure with a closed wall contour), causes a shift of the entire heat sink relative to the longitudinal axis of the casting. This is unacceptable, since the heat remover is an element of the brushes of the metal supply to the crystallizer, i.e. He rigidly soyne dinen with a glass of pouring ladle and immersed pipe.

The aim of the invention is to eliminate metal sticking to the heat remover and to improve the quality of the internal structure of the workpieces.

This goal is achieved by the fact that in a metal casting device containing an intermediate water-cooled heat remover having through channels of gas supply to the metal stream, the working walls of the heat remover are made of sections, between which are installed gaskets of non-metallic materials and gas channels .

In addition, the number of sections of the working walls in the device is odd.

Making the working walls of the separate sections allows them to vibrate without displacing the entire heat sink relative to the casting axis.

The location of the nozzle channels in the joints between the sections of the working walls in combination with the odd number of sections allows the gas flow and, therefore, the sputtered metal particles to be directed to the middle part of the plane of the opposite plate and, thus, eliminate the ingress of metal particles into the joints of the plates and in the channel-nozzles for supplying a spray of juce gas.

To avoid clogging of metal gaps between the sections of the TciM walls, gaskets of non-metallic refractory materials, such as asbestos, are installed.

FIG. 1 shows a device mounted on the metal supply system to the crystallizer on a continuous metal casting plant, a general view) of FIG. 2 - working walls of the heat remover, cross section.

The device consists of a housing 1, .koTpopoM mounted five sections of the working walls 2, divided among themselves by asbestos gaskets and equipped with water-cooled chambers 3 with a supply system 4 and a water outlet 5. An annular chamber 6 with ducts 7 for supplying spraying gas, connected to a supply line 8, is mounted in the housing 1. On the supply system 4, a generator 9 of water hammer is installed.

In the metal supply system, the device is mounted between the glass 10.

Claims (2)

1. DEVICE FOR METAL Pouring, containing an intermediate, water-cooled heat sink having through channels for supplying gas to the metal stream, characterized in that, in order to eliminate the buildup of metal on the heat sink · and improve the quality of the internal structure of the workpieces, the working walls of the heat sink are made of section , in the gaps between which gaskets made of non-metallic materials are installed and gas supply channels are located. 2. The device according to claim 1, which consists in the fact that the number of sections of the working walls is made odd- $ mn * m with CQ * 4