CN217173829U

CN217173829U - Ultrasonic leading-in bottom water tank of electroslag furnace molten pool

Info

Publication number: CN217173829U
Application number: CN202220549063.2U
Authority: CN
Inventors: 王渊
Original assignee: Chengdu Microcrystal Special Metal Material Co ltd
Current assignee: Chengdu Microcrystal Special Metal Material Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-08-12
Anticipated expiration: 2032-03-14

Abstract

The utility model provides a leading-in end water tank of electroslag furnace molten bath ultrasonic wave, including ultrasonic transducer, end water tank copper, ultrasonic transducer mounting flange, end water tank bottom plate, end water tank supporting seat, ultrasonic wave coupling seam, ultrasonic transducer controller, ultrasonic transducer control line. One part of the ultrasonic transducer is arranged in the bottom water tank, a bottom water tank copper plate is arranged above the bottom water tank, a bottom water tank bottom plate is arranged below the bottom water tank, the bottom of the ultrasonic transducer is fixed on the bottom water tank bottom plate through an ultrasonic transducer mounting flange, a bottom water tank supporting seat is arranged at the bottom of the bottom water tank bottom plate, and an ultrasonic coupling seam is arranged between the top of the ultrasonic transducer and the bottom of the bottom water tank copper plate. The utility model discloses introduce the ultrasonic wave back, the vibration energy of crystal embryo at the growth in-process acquisition, unstable crystal embryo among these ultrasonic waves can constantly broken growth process for these crystal embryos are geometric progression and increase.

Description

Ultrasonic leading-in bottom water tank of electroslag furnace molten pool

Technical Field

The utility model belongs to the technical field of metallurgical industry electroslag remelting, especially, relate to a leading-in end water tank of electroslag furnace molten bath ultrasonic wave.

Background

The method used by the electroslag remelting process in the metallurgical industry is still the traditional electroslag remelting process, and the method is mainly based on the control process of a slag system, current, voltage and cooling water, and strives to obtain a high-quality electroslag steel ingot on the basis. However, due to process limitations, the quality of the central part of a large-size electroslag steel ingot is difficult to guarantee, and the phenomena of loose center, coarse grains, segregation and even shrinkage cavity of the large electroslag steel ingot are common phenomena, and for the quality problems, the quality problems brought in the early stage are generally improved by increasing the investment of subsequent forging and heat treatment processes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the defect that above-mentioned prior art exists, provide a leading-in end water tank of electroslag furnace molten bath ultrasonic wave.

The utility model adopts the following technical scheme:

an electroslag furnace molten pool ultrasonic leading-in bottom water tank comprises an ultrasonic transducer, a bottom water tank copper plate, an ultrasonic transducer mounting flange, a bottom water tank bottom plate, a bottom water tank supporting seat, an ultrasonic coupling seam, an ultrasonic transducer controller and an ultrasonic transducer control line.

One part of the ultrasonic transducer is arranged in the bottom water tank, a bottom water tank copper plate is arranged above the bottom water tank, a bottom water tank bottom plate is arranged below the bottom water tank, the bottom of the ultrasonic transducer is fixed on the bottom water tank bottom plate through an ultrasonic transducer mounting flange, a bottom water tank supporting seat is arranged at the bottom of the bottom water tank bottom plate, and an ultrasonic coupling seam is arranged between the top of the ultrasonic transducer and the bottom of the bottom water tank copper plate. The ultrasonic transducer is connected with the ultrasonic transducer controller through an ultrasonic transducer control line.

The further technical proposal is that a bottom water tank supporting seat is arranged on a trolley.

The technical scheme is that an electroslag furnace crystallizer is installed on the upper portion of a bottom water tank copper plate, one end of an electrode rod is placed into the electroslag furnace crystallizer, electroslag ingots which are melted and cooled are arranged in the electroslag furnace crystallizer and below the electrode rod, the electrode rod is fixed on a cross arm of the electroslag furnace through a waveguide rod, and the cross arm of the electroslag furnace is installed on an electroslag furnace stand column.

The utility model has the advantages that:

the utility model discloses a characteristics are the ultrasonic wave of the specific frequency that ultrasonic transducer sent and specific power, through ultrasonic wave coupling seam, bottom water tank copper, through the electroslag ingot in the metal bath of transfering into again, the ultrasonic wave that spreads into in the metal bath can produce important influence to the brilliant embryo of solid-liquid interface liquid level side in the metal bath. In the large-scale electroslag steel ingot smelting process, the difference in temperature of solid-liquid interface both sides is very little, and solidification power is serious not enough, and the crystal nucleus produces very slowly, and crystal blank quantity is not enough for a large amount of metallic element is around these crystal blank growths, makes the crystalline grain thick, and the center is loose, leads to the electroslag steel ingot to produce a large amount of quality problems. After the ultrasonic waves are introduced, the crystal embryos obtain vibration energy in the growth process, and the ultrasonic waves can continuously break unstable crystal embryos in the growth process, so that the crystal embryos grow in a geometric series manner. The huge number of crystal blanks can simultaneously gather metal elements near the solid-liquid interface, thereby achieving the purpose of refining the crystal grains.

Drawings

FIG. 1 is an enlarged view of the portion B in FIG. 2;

fig. 2 is a schematic diagram of the installation position of the present invention (the controller of the ultrasonic transducer and the control line of the ultrasonic transducer are omitted).

In the figure: the system comprises a 1-ultrasonic transducer, a 2-bottom water tank copper plate, a 3-ultrasonic transducer mounting flange, a 4-bottom water tank bottom plate, a 5-bottom water tank supporting seat, a 6-ultrasonic coupling seam, a 7-electroslag furnace crystallizer, an 8-trolley, a 9-electroslag ingot, a 10-electrode bar, an 11-wave guide rod, a 12-electroslag furnace cross arm, a 13-electroslag furnace upright column, a 14-ultrasonic transducer controller and a 15-ultrasonic transducer control line.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The ultrasonic transducer 6 comprises an adjustable frequency modulation power ultrasonic transducer or a fixed parameter ultrasonic transducer.

As shown in fig. 1-2, the utility model discloses a leading-in end water tank of electroslag furnace molten bath ultrasonic wave, including ultrasonic transducer 1, end water tank copper 2, ultrasonic transducer mounting flange 3, end water tank bottom plate 4, end water tank supporting seat 5, ultrasonic wave coupling seam 6, ultrasonic transducer controller 14, ultrasonic transducer control line 15.

One part of the ultrasonic transducer 1 is arranged in the bottom water tank, the bottom water tank copper plate 2 is arranged above the bottom water tank, the bottom water tank bottom plate 4 is arranged below the bottom water tank, the bottom of the ultrasonic transducer 1 is fixed on the bottom water tank bottom plate 4 through the ultrasonic transducer mounting flange 3, the bottom water tank supporting seat 5 is arranged at the bottom of the bottom water tank bottom plate 4, and an ultrasonic coupling seam 6 is arranged between the top of the ultrasonic transducer 1 and the bottom of the bottom water tank copper plate 2.

The ultrasonic transducer 1 is connected to an ultrasonic transducer controller 14 via an ultrasonic transducer control line 15.

The further technical proposal is that a bottom water tank supporting seat 5 is arranged on a trolley 8.

The technical scheme is that an electroslag furnace crystallizer 7 is installed on the upper portion of a bottom water tank copper plate 2, one end of an electrode rod 10 is arranged in the electroslag furnace crystallizer 7, an electroslag ingot 9 which is melted and cooled is arranged in the electroslag furnace crystallizer 7 and below the electrode rod 10, the electrode rod 10 is fixed on an electroslag furnace cross arm 12 through a wave guide rod 11, and the electroslag furnace cross arm 12 is installed on an electroslag furnace upright post 13.

The utility model discloses a working process:

the ultrasonic transducer 1 is arranged in the bottom water tank, ultrasonic waves are transmitted to the bottom water tank copper plate 2 through the ultrasonic coupling seam 6, and then the ultrasonic waves are transmitted to a metal molten pool of the electric slag ingot which is not cooled through the electric slag ingot 9 to form a specific ultrasonic wave transmission channel, so that the ultrasonic wave sound source is enabled to control and interfere the metal molten pool remotely, crystal blanks on the liquid phase side of a solid-liquid interface are crushed, the crystal blanks are promoted to grow rapidly, the nucleation rate is increased effectively, and the grain size of the electric slag ingot is refined.

The utility model discloses a leading-in bottom water case of electroslag furnace molten bath ultrasonic wave, the ingot weight who is applicable to the electroslag furnace crystallizer is 5 tons to 20 tons. In the electroslag remelting process, the temperature of a metal molten pool is gradually increased towards the center of the molten pool along with a crystallizer copper plate, the cooling condition of the center of the metal molten pool is worst, part of cold quantity required by molten steel solidification at the center is gradually transferred to the center of the metal molten pool by cooling water through the crystallizer copper plate and the outer side of the metal molten pool, and the closer to the center of the molten pool, the smaller the temperature gradient is, and the slower the cold quantity obtained by the molten steel is.

The other part is transferred to the metal melting pool through the solidified electroslag ingot, and because the solidified electroslag ingot has high temperature, the amount of cold which can be provided by the electroslag ingot to the metal melting pool is very limited. The heat exchange condition of the center of a metal melting pool of a large crystallizer (more than 5 tons) is very poor, the growth speed of a crystal blank is very low, the solidification speed is slow, and the metallurgical quality problems of large crystal grains, loose center, even serious shrinkage cavity, segregation and the like of a large electroslag ingot are caused.

In the electroslag remelting process, ultrasonic waves with specific frequency and specific power generated by an ultrasonic transducer 1 (arranged between a bottom water tank bottom plate 4 and a bottom water tank copper plate 2) in a bottom water tank under the instruction of an ultrasonic transducer controller 14 are transmitted to the bottom water tank copper plate 2 through an ultrasonic coupling seam 6, and then are transmitted to a metal molten pool 10 through an electric slag ingot, so that the metal molten pool 10 and the molten slag pool generate synchronous vibration.

Under the action of ultrasonic energy, the electroslag remelting process is changed as follows:

1. under the action of ultrasonic energy, the nucleation rate of the liquid phase side of the solid-liquid interface of the metal molten pool is greatly improved. The crystal blank near the solid-liquid interface at the central part of the original electroslag crystallizer grows slowly, under the action of ultrasonic waves, one crystal blank can be broken into a plurality of finer crystal blanks, the newly formed crystal blank grows again and is broken repeatedly, the nucleation rate at the central part in a metal molten pool is greatly increased, and the obtained liquid crystal effect is very obvious: the phenomena of coarse grains, shrinkage cavities, center porosity and the like are avoided, and the composition segregation is effectively controlled.

2. Under the action of ultrasonic energy, the slag bath 10 which is used as the core of electroslag remelting also vibrates synchronously along with ultrasonic waves, and during the electroslag remelting, the metal droplets which are melted and dripped from the electrodes can have the phenomenon of dripping in advance, namely the metal droplets are dripped from the electrodes by overcoming the surface tension of the droplets by gravity, but the droplets which are not accumulated to be heavy enough are knocked down from the electrodes under the action of the ultrasonic waves and enter the molten bath 10 for reaction. The smaller liquid drops have larger reaction interface when reacting in the molten pool 10, so that the inclusion removing capability of the molten pool 10 is also obviously improved, and the function of electroslag remelting is greatly improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An electroslag furnace molten pool ultrasonic leading-in bottom water tank is characterized by comprising an ultrasonic transducer, a bottom water tank copper plate, an ultrasonic transducer mounting flange, a bottom water tank bottom plate, a bottom water tank supporting seat, an ultrasonic coupling seam, an ultrasonic transducer controller and an ultrasonic transducer control line; one part of the ultrasonic transducer is arranged in the bottom water tank, a bottom water tank copper plate is arranged above the bottom water tank, a bottom water tank bottom plate is arranged below the bottom water tank, the bottom of the ultrasonic transducer is fixed on the bottom water tank bottom plate through an ultrasonic transducer mounting flange, a bottom water tank supporting seat is arranged at the bottom of the bottom water tank bottom plate, an ultrasonic coupling seam is arranged between the top of the ultrasonic transducer and the bottom of the bottom water tank copper plate, and the ultrasonic transducer is connected with an ultrasonic transducer controller through an ultrasonic transducer control line.

2. The electroslag furnace molten pool ultrasonic guide bottom water tank as defined in claim 1, wherein the bottom water tank supporting seat is mounted on the trolley.

3. The bottom water tank for guiding ultrasonic waves into an electroslag furnace molten pool according to claim 2, wherein an electroslag furnace crystallizer is installed on the upper portion of a copper plate of the bottom water tank, one end of an electrode rod is placed into the electroslag furnace crystallizer, an electroslag ingot which is melted and cooled is arranged in the electroslag furnace crystallizer and below the electrode rod, the electrode rod is fixed on a cross arm of the electroslag furnace through a waveguide rod, and the cross arm of the electroslag furnace is installed on an upright post of the electroslag furnace.