KR100217855B1 - Arc welding method and device for electromagnetic power - Google Patents

Abstract

The present invention relates to an arc welding method using an electromagnetic force and a device thereof in more detail, by focusing or controlling the arc using an electromagnetic force under an inert gas layer, to easily control precision welding or arc deflection, as well as melting The purpose of the present invention is to enable magnetic stirring of metals, thereby minimizing crystal grains, suppressing segregation and pores, and preventing magnetic blow due to material properties.

In order to achieve the above object, the present invention provides a copper pipe which is connected to the magnetic field and waveform control device through the output control device and the magnetic field generating power supply organically connected to the sequential control device and the waveform generating device, the outer side of the torch tip A water cooling tube is installed to cool the magnetic coils arranged at an angle of 90 degrees to the left and right and back to the inside thereof, and the magnetic properties are arranged to be used for magnetic agitation of arc and molten metal, and to exhibit the magnetic properties to the maximum. The water cooling tube is made to include a torch tip coupled in a form embedded in the tip portion.

Description

Arc welding method using electromagnetic force and device

1 is a schematic view showing a conventional arc welding apparatus.

Figure 2 is a schematic diagram showing an arc welding apparatus using an electromagnetic force according to the present invention.

3 is a plan view of FIG. 1 'F'.

4 is a side cross-sectional view of FIG. 1 'F'.

* Explanation of symbols for main parts of the drawings

100: magnetic field and waveform control device 110: tungsten electrode

120: Psalm 130: water cooling tube

140: copper pipe 150: torch tip

170: arc 180: magnetic coil

I: direction of electromagnetic force

The present invention relates to an arc welding method using an electromagnetic force and a device thereof in more detail, by focusing or controlling the arc using an electromagnetic force under an inert gas layer, to easily control precision welding or arc deflection, as well as melting Arc welding method and apparatus using electromagnetic force that enables magnetic stirring of metals to make crystal grains fine, suppress segregation and pores, etc., and prevent magnetic blow phenomenon that differs in material characteristics. It is about.

In general arc welding, electrical energy is converted into thermal energy and used. The arc welding is a method of melt-bonding a metal material using arc heat as the thermal energy.

In addition, the arc used in the arc welding refers to a state in which the electrode evaporates from the normal arc generation step and the ion current is increased by the vapor, and thus the voltage is extremely low and the current flows a lot.

In the arc welding method related to the above technique, as shown in FIG. 1, the metal electrode rod 10 is connected to one side of the welding power supply, and the other side is connected to the welding material 20. ) Is contacted to the welded material 20 and then separated regularly to generate an arc 30.

In addition, in the conventional arc welding structure as described above, as shown in FIG. 1, an arc core 40 is embedded inside the metal electrode rod 10, and the arc core 40 is closed. The arc layer (Stream) 50 is surrounded by the contact with the welding material 20, and has a structure in which an arc salt (60) is formed on the outer side of the arc layer (50).

However, in the conventional arc welding method as described above, since it becomes very difficult to control the arc, it is possible only by weaving or current, voltage, and pulse control, which are control methods by mechanical and electrical devices. When a magnetic blow phenomenon occurs according to the characteristics of the material to be welded, there is no way to control the arc phenomenon as described above.

Also, in recent years, there is a method of changing the improvement phenomenon in order to increase the root face while increasing the angle of root or the root radius in order to improve the welding efficiency. In the welding method, there is a problem in welding work, weld quality (poor fusion, high temperature cracking), and there is a limit in reducing the improvement area.

In addition, Japanese Laid-Open Patent Publication (So 54-67538) proposes a solution to the problem of cracking in the weld zone of a reaction tube used in the petrochemical industry.

However, the automatic GTA welding method proposed in the above publication is a simple magnetic method for improving the welding efficiency and quality, which magnetically shakes the arc and molten metal and enables narrowing, thus reducing the amount of welding heat. It is limited to a method.

The present invention has been made in order to improve the various problems as described above, the purpose is to focus or control the arc using an electromagnetic force under an inert gas layer, to easily control precision welding or arc deflection, as well as melting The present invention provides an arc welding method using electromagnetic force, which enables magnetic stirring of metals to refine crystal grains, suppresses segregation and pores, and prevents magnetic swelling due to material properties.

In addition, another object of the present invention is that the magnetic coils arranged at an angle of 90 degrees to the left and right and back and forth are installed in a copper tube in which a water cooling tube is embedded, so that magnetic properties can be used for the magnetic base of arc and molten metal. In addition, to provide an arc welding apparatus using a magnetic force coupled to the water-cooled tube in a form embedded in the tip of the torch tip to maximize the magnetic properties.

As a technical means for achieving the above object, the present invention comprises the steps of organically connecting the control device and the waveform generator to the magnetic field generating power supply in the generation of arc by the welding power source; Connecting a magnetic field generating power supply device organically connected to the sequential control device and the waveform generating device to a magnetic field and waveform control device through an output control device; And arranging the output and waveform in various forms (circular, triangular, square and sinusoidal) according to the thickness and shape of the material (sample) to be welded as the magnetic field and waveform control device. By providing a welding method.

In addition, a copper pipe coupled to the outside of the tip of the ceramic torch tip, a magnetic coil disposed to form an angle of 90 degrees left and right and back and forth inside the copper pipe, and a water cooling tube installed to cool the magnetic coil inside the copper pipe. And arranging magnetic properties to be used for magnetic agitation of the arc and molten metal, and torch tips including the torch tip coupled to the water cooling tube embedded in the tip portion to maximize the magnetic characteristics. By providing the arc welding device used.

Hereinafter, the present invention will be described in detail with reference to the drawings.

2 is a schematic view showing an arc welding method and apparatus using electromagnetic force according to the present invention, FIG. 3 is a plan view of FIG. 2, 'F', and FIG. 4 is a side sectional view of FIG. A welding power source A for generating 170 is connected to the tungsten electrode rod 110, and on one side of the welding power source A, the sequential control device B and the waveform generator C according to the generation of the arc 170. ) Is organically connected to the magnetic field generating power supply (D).

In addition, the magnetic field generating power supply (D) organically connected to the sequential control device (B) and the waveform generating device (C) is connected to the magnetic field and waveform control device 100 through the output control device (E) on one side thereof. do.

The magnetic field and waveform control apparatus 100 is provided to deflect the output and the waveform of the electromagnetic force acting direction I in various forms according to the thickness or shape of the material (test piece) 120 to be welded.

In addition, the magnetic field and waveform control apparatus 100 has a copper tube 140 coupled to the outside of the front end of the ceramic torch tip 150 in which the tungsten electrode 110 connected to the welding power source A is embedded.

The magnetic coil 180 is disposed inside the copper pipe 140 at left and right angles and back and forth at an angle of 90 degrees, and the magnetic coil 180 is disposed between the magnetic coils 180 inside the copper pipe 140. The water cooling tube 130 to cool the combination is combined.

In addition, the water-cooled pipe 130 is disposed in the tip portion of the torch tip 150 to maximize the magnetic properties by arranging the magnetic properties to be used for magnetic stirring of the arc and molten metal (sample) 120. Combined in form.

The torch tip 150 is formed of a ceramic material to protect the magnetic coil 180 from heat applied from the inside thereof.

When explaining the embodiment of the present invention having the configuration as described above in detail.

As shown in FIG. 2, when the welding power source A generating the arc 170 is connected to the tungsten electrode 110, the arc 170 is generated between the tungsten electrode 110 and the specimen 120. do.

In addition, the sequential control device (B) and the waveform generator (C) installed on one side of the welding power source (A) is organically connected to the magnetic field generating power supply (D), the magnetic field generating power supply (D) is one side The output of the magnetic field and waveform control device 100 addressed to the arc welding device as the output control device E of the control unit is adjusted.

Meanwhile, as shown in FIGS. 3 and 4, the magnetic field and waveform control apparatus 100 has a direction of electromagnetic force (I) generated according to the thickness or shape of the material (test piece) 120 to be welded. Deflect outputs and waveforms in various forms.

At this time, the output of the electromagnetic force acting direction (I) and the shape of the waveform is deflected into a circle, triangle, square and sinusoidal wave.

Subsequently, the magnetic field and waveform control apparatus 100 has a copper tube 140 coupled to the outside of the tip of the torch tip 150 having the tungsten electrode 110 connected to the welding power source A therein.

The inside of the copper pipe 140 has a magnetic coil 180 is disposed to the left and right and front and rear at an angle of 90 degrees, the electromagnetic force acting direction (I) is deflected, the internal magnetic coil 180 of the copper pipe 140 The water cooling tube 130 is coupled between the cooling the magnetic coil 180.

In addition, the water cooling tube 130 is coupled to the built-in form in the tip portion of the torch tip 150 to arrange the magnetic properties to be used for magnetic stirring of the arc and molten metal (sample) 120 magnetic properties To make the most of it.

The torch tip 150 is formed of a ceramic material to block heat applied to the magnetic coil 180.

Thus, according to the arc welding method and apparatus using the electromagnetic force of the present invention, by focusing or controlling the arc using the electromagnetic force in the inert gas layer, it is possible to easily control precision welding, arc deflection, etc., as well as magnetic stirring of molten metal. In this way, the grains are refined and segregation and pores are suppressed, while magnetic swelling is prevented according to material properties.

Claims (3)

A copper pipe 140 coupled to the outside of the tip of the torch tip 150, a magnetic coil 180 disposed at an angle of 90 degrees left and right and back and forth inside the copper pipe 140, and the copper pipe 140. The water cooling tube 130 is installed to cool the magnetic coil 180 in the interior thereof, and the magnetic properties are arranged to be used for magnetic agitation of arc and molten metal, and the water cooling tube to maximize the magnetic properties ( Arc welding device using a magnetic force, characterized in that the 130 is made to include a torch tip 150 coupled to the built-in form on the tip. The arc welding device using magnetic force as claimed in claim 1, wherein the tochip tip 150 is formed of a ceramic material to protect the magnetic coil 180 from heat. Organically connecting the control device (B) and the waveform generator (C) to the magnetic field generating power supply (D) upon arc generation by the welding power source (A); Connecting the magnetic field generating power supply device (D) organically connected to the sequential control device (B) and the waveform generating device (C) to the magnetic field and waveform control device (100) through the output control device (E); And biasing the output and the waveform of the electromagnetic force acting direction (I) in various forms according to the thickness or shape of the material (test piece) 120 to be welded as the magnetic field and waveform control device 100. Arc welding method using a magnetic force, characterized in that.