SU1419794A1 - Arrangement for feeding inocculant into metal jet - Google Patents

Abstract

The invention relates to foundry and can be used on smelting units for the uniform introduction of finely divided modifiers into a jet of liquid metal. The purpose of the invention is to improve the quality of the metal and the reliability of the device. The device for feeding the modifier to the metal stream is made in the form of a horizontal gutter with a suzhagatsim sock. The chute is equipped with a folding cap, a bracket for fastening the device and vertical and inclined partitions forming at least three pockets, with the angle of inclination of the first and each subsequent inclined partitions to the bottom of the chute selected from the ratio ft – j., + + (90 ° - of) / n, where i is the serial number of the inclined partition; / J, is the angle of inclination of the i-th partition to the bottom of the gutter; n - the number of inclined partitions on the gutter; e (- the sliding angle of the bulk material. 5 Il. (L

Description

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The invention relates to foundry and can be used on smelting units for the uniform introduction of finely divided modifiers into a jet of liquid metal.

The purpose of the invention is to improve the quality of the metal and the reliability of the device.

Fig. 1 shows a proposed device for feeding a modifier into a metal jet, view in plan; Fig.2 is the same, side view; Fig. 3 is a view A in Fig. 2 (unit for fastening the device to the rotary platform of the furnace); figure 4 - installation of the device on the furnace, the beginning of the setting of the furnace; in FIG. 3, the position of the device at the maximum angle of turning.

The device for supplying the modifier to the metal stream consists of a chute with a tapering toe 1, a trunnion 2 for transporting with lifting means, mounted on the side walls of the chute; hinged cover 3, bracket 4 for fastening the gutter to the furnace using a wedge 5, vertical 6 and inclined 7 partitions that form pockets 8. The number of pockets must be at least three.

The angle of inclination of the first and each subsequent inclined baffles to the bottom of the gutter is calculated as follows.

For example, the LC MK brand modifier was taken. The main component of this modifier is silicon over 60%. The slip angle for quartzite is 32. The angle of the sock (the first partition) with the number of partitions is equal to f,

90 ° igo.

3

the angle of the second partition:

90 ° - 32 °

 38 ° and corresponding / 1 19 ° +

Actually the third - 57.

With four partitions n 4

90 ° - 0. -O angle of inclination is, 6, t 14

ft 28 °; % 42 °; / 14 56 etc.

The device works in the following way.

When the lid is opened with 3, the modifier fills the pockets 8, the crane to the pin 2 is transported and installed on the rotary working

42

site 10 of the induction furnace 9 and secured to the bracket 4 by a wedge 5. Pre-turn the rotary cover, which closed the mouth of the furnace (the cover is not shown). The dough of the oven heats the device, and with it the modifier. The closed device key 3 creates direction of flow modifier. When turning the furnace 9, the metal flows along the drain tip 11 into the bucket 12. Together with the platform, the device also rotates, the modifier pours out of each pocket as the angle of inclination in the groove reaches. The gradual rotation of the furnace allows evenly setting the modifier to the metal stream.

Figure 4 shows how with a gradual tilting of the furnace rash of the modifier occurs from the first pocket, and from the subsequent ones not. In FIG. 3, the modifier from the last pocket falls on the drain sock 11 when turning the oven through 90 °. In addition, the release of metal from the furnace on demand technology can be made at different speeds (duration

the release from the 10-ton furnace (3–8 min) and, synchronously with this speed, the modifier is set into a stream of metal. In the event of an emergency stop kantov- neither is the furnace stopping the supply of modifier.

The advantage of the invention in comparison with the known technical solutions lies in the simplicity and reliability of operation - there are no dosing mechanisms, no feed mechanisms that can deteriorate in conditions of high temperatures and high dustiness. By creating a nth number of pockets with the help of vertical and inclined partitions, the modifier is reliably evenly fed into the metal stream.

Claims (1)

Invention Formula A device for supplying a modifier to a metal jet, made in the form of a horizontal gutter with a tapering toe, characterized in that, in order to improve the quality of the metal and the reliability of the device, the gutter is provided with a folding grip, a bracket for mounting the device and vertical and inclined partitions forming at least three pockets, and the angle of inclination of the first and each subsequent inclined partitions to the bottom of the celeba is chosen from the ratio i, 9 (f-j n where 1 is the serial number of the sloping partition; - the angle of the i-th partition to the bottom of the gutter; - the number of inclined partitions on the gutter; - the sliding angle of the bulk material (reference value depends on the characteristics of the bulk material and the gutter material). View fie. 2 BUT .j Jl . / P D d - no.5 Phie.