KR20140089640A - Electric pressure welding apparatus and method, and system using thereof - Google Patents

Abstract

A device and a method for electric pressure welding, and a system using the same are provided. According to an embodiment of the present invention, the device for electric pressure welding comprises a clamp clamping materials being bonded; a welding transformer supplying current required to bond the metal materials; and an upset cylinder making the bonding surfaces of the metal materials repeatedly come in close contact with each other and separated from each other. The upset cylinder bonds the metal material by moving the metal material forward to pressurize the bonding surfaces in case the bonding surfaces of the metal materials are melt.

Description

TECHNICAL FIELD The present invention relates to an electric pressure welding apparatus and method,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical insulation displacement device and method, and a system using the same. More particularly, the present invention relates to an electric insulation displacement insulation displacement sensor An electric pressure welding apparatus and method for pressing a metal material, and a system using the same.

Welding is a method of joining a metal material by locally applying heat to the joining position to make a part of the material once molten, mixing and then cooling and solidifying. Bolt tightening is characterized by high strength of joints and high airtightness compared to mechanical joints. It is characterized by fusion welding which locally fuses the joints of the member itself and fusion welding of the joints with other metals having low melting points And soldering (brazing, soldering) by melting it and alloying it. There is also a pressure welding which presses and presses properly the member to be joined.

Arc Welding was used for most of the existing joints. Types of arc welding include Shielded Metal Arc Welding (SMAW), Gas Tungsten Arc Welding (GTAW), Submerged Arc Welding (SAW), Gas Metal Arc Welding, Flux Cored Arc Welding (FCAW), and Plasma Arc Welding (PAW). In the case of reinforcing bars D19 or more, gas pressure joints are used, and they can be divided into three types according to the construction method: semiautomatic, automatic, and manual pressure welding.

However, when the cross section of the material is large, it takes about 1 ~ 2 hours per welding at one place during the operation by the conventional welding method, so that only about 10 ~ 12 places can be welded per one worker There is a limit. Thus, it is disadvantageous in terms of air and cost. In addition, in the case of arc welding, a technique of melting and bonding welding metal requires a temperature of 1500 ° C or higher, and a preliminary working element such as an angle of improvement is required. In addition, in the case of existing welding work, carbon dioxide is generated at the time of bonding, which is not environmentally friendly, and there are problems such as unevenness of welding surface temperature distribution and reliability of bonding surface quality. In addition, a pressure welding method applicable to large-diameter steel pipes, reinforcing bars, and large-section H-beams has not been developed at present.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a method of manufacturing a semiconductor device, in which, after a metal material to be bonded is fixed, heat is generated on a contact surface through a large current while lightly contacting a surface to be bonded, And an electric pressure welding apparatus and method in which a large pressure is momentarily applied to press them, and a system using the same.

Further, a problem to be solved by the present invention is to provide a method of manufacturing a large-sized H-shaped steel pipe or a large-diameter steel pipe at a low temperature by generating heat in a cross section by repeatedly contacting and separating the cross- A pressure welding apparatus and method, and a system using the same.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an electrical insulation displacement device comprising: a clamp for clamping a metal material to be bonded; A welding transformer for supplying a current necessary for joining the metal material; And an upsetting cylinder for repeatedly contacting and separating the bonding surface of the metallic material, wherein the upsetting cylinder advances the metallic material when the bonding surface of the metallic material is used to apply pressure to the bonding surface, The material is bonded.

According to an aspect of the present invention, there is provided an electrical pressure welding method comprising: clamping a metal material to be bonded; Supplying a current to a bonding surface to which the metal material is to be bonded; Repeatedly contacting and separating the bonding surfaces of the metal material to melt the bonding surfaces; And joining the metal material by applying pressure to the joining surface by advancing the metal material when the joining surface of the metal material is used.

According to an aspect of the present invention, there is provided an electrical insulation displacement system comprising: a power supply for supplying power; Wherein the metal material is clamped by clamping the outer surface of the opposing metal material and supplied with electric power from the power supply device to supply a current required for welding to the bonding surface of the metal material and repeatedly contacting and separating the bonding surface, An electrical insulation displacement device for pressing the joint surface of the material to weld the metal material; And a control device for controlling the welding current, the energization time, and the pressing force by controlling the power supply device and the electric pressure welding device.

Other specific details of the invention are included in the detailed description and drawings.

According to the present invention, in the case of a rapid electric welding automation technique, welding is performed by applying heat and pressure generated by applying current and voltage to the same material cross section instead of welding the welding metal, It is possible to improve the quality performance of the joint surface.

In addition, it is possible to improve the reliability and usability of the joint surface quality by automating the joining process, and it is possible to reduce the air and the cost because the improvement work to be performed before the arc welding is unnecessary, and in the case of the existing ARC welding, Accordingly, although the welding quality is greatly affected, the automation process and the convenience of use can be achieved.

And since it does not emit carbon dioxide during bonding, it is an environmentally friendly technology, and it is possible to minimize the deformation that may occur during bonding by fixing the object to be welded.

In addition, since the rapid electric welding automation technology is the first technology, it can be applied directly to the domestic field so that it can achieve technological independence and increase the efficiency and production efficiency of the process, and it can become a developed country in pressure welding technology.

1 is a front sectional view of an electrical insulation displacement device according to an embodiment of the present invention.
2A is a side sectional view of an electrical insulation displacement device according to an embodiment of the present invention applied to a large diameter steel pipe.
2B is a side cross-sectional view of an electrical insulation displacement device according to an embodiment of the present invention applied to a large-section H-shaped steel.
2C is a detailed sectional view of FIG. 2B.
FIGS. 3A to 3C are front sectional views showing the state of use of the electrical insulation displacement device according to an embodiment of the present invention.
4 is a flowchart of an electric-pressure welding method according to an embodiment of the present invention.
5 is a configuration diagram of an electric voltage-welding system according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. Therefore, it goes without saying that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the technical spirit of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms "comprises" and / or "made of" means that a component, step, operation, and / or element may be embodied in one or more other components, steps, operations, and / And does not exclude the presence or addition thereof.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

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

FIG. 1 is a front cross-sectional view of an electrical insulation displacement device according to an embodiment of the present invention. FIG. 2a is a side sectional view of an electrical insulation displacement device according to an embodiment of the present invention, Sectional view of the electrical insulation displacement device according to one embodiment of the present invention, and FIG. 2C is a detailed sectional view of FIG. 2B.

The electrical insulation displacement device 100 according to an embodiment of the present invention may include a clamp 110, a welding transformer 120, an upsetting cylinder 130, and a hook 150.

The clamp 110 clamps the metal material 5 to be bonded. In general, it will be apparent to those skilled in the art that the metal material 5 clamped by the clamp 110 may be, but is not limited to, a large diameter steel pipe or a large H-shaped steel. First, a description will be made with reference to Figs. 1 and 2A.

The clamp 110 preferably has a short cylindrical shape for clamping a metal material 5 having a very large cross section such as a large-diameter steel pipe or a large-section H-shaped steel, but it is not limited thereto. It will be self-evident.

The clamp 110 clamps the metal material 5 by joining two parts of the semicircular shape located outside the metal material 5. [ Then, the hook 150 is connected to the clamp 110 to support the clamp 110. Preferably, at least one hook 150 may be connected to each of the two portions constituting the clamp 110.

Further, the clamp 110 may further include a clamp shoe (not shown) for preventing the sliding of the metal material 5. The clamp shoe is located on the inner surface of the clamp 110 where the metal material 5 contacts. It is also preferable that the clamp shoe is located on the inner surface of the clamp 110 at a portion excluding the welding transformer 120. For example, in a case where a plurality of welding transformers 120 are disposed at a constant interval in the clamp 110, the clamp shoe may be disposed at a constant interval from the inner surface of the clamp 110.

It should be appreciated that the welding operation is to bond two metal materials 5 of the same or different types, so that it is common that two clamps 110 are used, but that two or more clamps 110 can be used simultaneously .

The welding transformer 120 supplies the current and / or voltage required for the bonding of the metallic material 5. To this end, the welding transformer 120 may be installed to penetrate from the outer surface of the clamp 110 to the inner surface. The welding source 120 is connected to a power source supplying unit for supplying power to one end of the welding transformer 120 located outside the clamp 110. The metal source 5 is connected to the other end of the welding transformer 120 located outside the clamp 110, As shown in Fig.

A current voltage is applied to the end surface of the metal material 5 by the welding transformer 120 to transmit heat to the contact surface. At this time, a flame may be generated on the contact surface, and the contact and separation of the welding surface are repeated by the upsetting cylinder 130 while heating the metal material 5 with this heat.

The upsetting cylinder 130 serves to repeatedly contact and separate the bonding surface of the metal material 5. [ The upset cylinder 130 is positioned and driven between the two clamps 110 to reciprocate the metal material 5 clamped to the clamp 110. That is, one end and the other end of the upset cylinder 130 are connected to the two clamps 110, respectively, so that the distance between the clamps 110 is reduced by driving the upsetting cylinder 130. As the metal material 5 is reciprocated by the upsetting cylinder 130, the metal material 5 clamped to the clamp 110 is brought into contact with and spaced from the other material facing it. The contact and separation of the metal material 5 are repeatedly caused by the reciprocating motion of the upsetting cylinder 130. Thus, it is possible to accelerate the melting of the cross section of the material by repeating the contact and separation of the cross section after applying the current voltage to the cross section of the opposing metallic material 5.

Specifically, the upsetting cylinder 130 rapidly advances the metal material 5 when the joining face of the metal material 5 is used to apply pressure to the joining face of the metal material 5, To another material. At this time, since the technique of joining the end face of the metal material 5 by using the heat and the pressure generated by applying current and voltage to the end face of the metal material 5 can be performed at low temperature, it is possible to improve the quality performance of the bonding face . Further, since the carbon dioxide is not discharged during the bonding, the metal material 5 can be fixed by the clamp 110 and / or the clamp shoe, thereby minimizing the deformation that may occur at the time of bonding.

The hook 150 is connected to the clamp 110 to support the clam 110. The hook 150 supports the clamp 110 so that the clamp 110 supports the linear movement of the upsetting cylinder 130 in the reciprocating motion.

Next, a description will be made with reference to Figs. 2B and 2C.

In the case of a large-section H-shaped steel, the cross-sectional shape has an H-shape instead of a circular shape. Thus, when the metal material 5 is a large-section H-shaped steel, the fixing jig 540 is connected to both end faces of the metal material 5 to fix the large-section H-shaped steel. Then, a current voltage is supplied to the end face of the metal material 5 by the power supply device 200 to transmit heat to the contact face. By this heat, the metal material 5 is heated, and the contact and separation of the welding surface are repeated by the upsetting cylinder 530.

Particularly, a current voltage is applied to the end surface of the metal material 5 by the welding transformer 520 to transmit heat to the contact surface. The clamps 510 are located outside the metallic material 5 and at least two of them are joined to clamp the metallic material 5. Then, the hook 550 is connected to the clamp 510 to support the clamp 510. It is to be understood that two clamps 510 are generally used because the welding operation is to bond two identical or different metal materials 5, but it is natural that two or more clamps 510 can be designed to be used simultaneously .

FIGS. 3A to 3C are front sectional views showing the use state of the electrical insulation displacement device according to an embodiment of the present invention.

3A, the distance between the metal materials 5 clamped by the clamp 110 is shortened by the driving of the upsetting cylinder 130 with the metal materials 5 opposed to each other. Then, a current is applied to the metal material 5 clamped by the welding transformer 120, and the metal material 5 is melted by heat.

In FIG. 3B, as the spacing between the opposing metal materials 5 becomes closer to each other, the driving speed of the upsetting cylinder 130 is reduced, thereby advancing the clamp 110 at a lower speed. Then, the gap between the clamps 110 is reduced by reciprocating the upsetting cylinder 130. Thereby, the two metal materials 5 clamped to the clamp 110 are repeatedly contacted and spaced apart. As the cross section of the metal material 5 is heated by the welding transformer 120 and the two metal materials 5 opposed by the upsetting cylinder 130 repeat contact, The cross section becomes active. That is, the end face portion of the metal material 5 to be contacted is covered with the metal vapor and the molten metal.

3C, the clamp 110 is rapidly advanced and brought into contact by the upsetting cylinder 130 when the section to be contacted of the metal material 5 is in the activated state covered with the metal vapor and the molten metal. In this case, the two opposing cross-sections of the metal material 5 are brought into contact with each other at a high speed, so that a very large pressure is instantaneously applied to the contact surface of the metal material 5.

Through this, it is possible to join the two metal materials 5 by using the heat and the pressure applied to the contact surface of the metal material 5. It is possible to bond at 500 to 900 ° C, which is lower than 1500 to 3000 ° C, which is the temperature required for general arc welding, so that the quality of the joint surface is improved and the preceding work such as the improvement angle can be omitted .

4 is a flowchart of an electric-pressure welding method according to an embodiment of the present invention.

After the metallic material to be bonded is clamped (S410), a current is supplied to the bonding surface to which the metallic material is to be bonded (S420), and the bonding surface of the metallic material is repeatedly contacted and spaced to melt the bonding surface (S430). When the bonding surface of the metal material is melted, the metal material is advanced to apply a large pressure to the bonding surface instantaneously to bond the metal material (S440).

In step S430, melting of the bonding surface is performed by heating the bonding surface with the heat applied to the bonding surface by electric current in contact with the bonding surface. By repeatedly contacting and separating the bonding surface of the metal material, the melting of the cross section of the metal material is accelerated.

In the step S440, when the joint surface of the metal material is covered with the metal vapor and the molten metal, the metal material is advanced at a high speed to bond the metal material.

Thus, in the case of conventional arc welding, the welding quality is greatly influenced by the skill of the welder, but the automation process can be realized and the ease of use can be achieved. A specific structure for performing the electric-pressure welding method is the same as that of the electric pressure-welding apparatus 100 described above, so that it is omitted.

5 is a configuration diagram of an electric voltage-welding system according to an embodiment of the present invention.

An electric pressure welding system 10 according to an embodiment of the present invention includes a power supply device 200, an electric pressure welding device 100, and a control device 300.

The power supply device 200 supplies power to the electric pressure welding device 100. That is, the current supply voltage is applied to the welding transformer 120 of the electrical insulation displacement device 100 by the power supply device 200.

The electric pressure welding apparatus 100 clamps and clamps the outer surface of the opposing metal material 5 and supplies a current required for welding to the bonding surface of the metallic material 5 by receiving power from the power supply device 200, Is a device for welding the metal material (5) by pressing the bonding surface of the metal material (5) after the bonding surface is repeatedly contacted and separated and melted.

To this end, the electric pressure welding apparatus 100 includes a clamp 110 for clamping a metal material 5, a welding transformer 120 for supplying a current necessary for bonding of the metal material 5, And an upsetting cylinder 130 for repeatedly contacting and spacing the upper and lower plates. Here, the upsetting cylinder 130 brings the opposing metal material 5 into close contact with each other to press the bonding surface of the metallic material 5 when the bonding surface of the metallic material 5 is used.

That is, after the object to be bonded is fixed by using the clamping system 110 through the electric insulation displacement system 10, heat is generated on the contact surface through a large current while lightly contacting the surface to be bonded, An instantaneous large pressure is exerted to realize an automated process of pressing the object to be joined. Here, the operations of the clamp 110, the welding transformer 120, and the upsetting cylinder 130, which are components of the electric pressure welding apparatus 100, are the same as described above, and thus will not be described.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Database
110: Clamp
120: welding transformer
130: Upset cylinder
200: Power supply
300: Control device

Claims (11)

A clamp for clamping a metal material to be joined;
A welding transformer for supplying a current necessary for joining the metal material; And
And an upsetting cylinder for repeatedly contacting and separating the bonding surface of the metal material,
Wherein the upsetting cylinder advances the metal material when the joint surface of the metal material is used to apply pressure to the joint surface to join the metal material. The method according to claim 1,
Wherein the clamp is formed by combining two parts of a semicircular shape for clamping a metal material. The method according to claim 1,
And a hook to which the clamp is connected. The method according to claim 1,
Wherein the clamp includes a clamp shoe for preventing sliding of the metal material to be clamped. 5. The method of claim 4,
And the clamp shoe is disposed on the inner surface of the clamp. Clamping the metal material to be joined;
Supplying a current to a bonding surface to which the metal material is to be bonded;
Repeatedly contacting and separating the bonding surfaces of the metal material to melt the bonding surfaces; And
And joining the metal material by applying pressure to the bonding surface by advancing the metal material when the bonding surface of the metal material is used. The method according to claim 6,
Wherein the step of melting the bonding surface further comprises a step of heating the bonding surface with heat applied to the bonding surface by electric current in contact with the bonding surface. The method according to claim 6,
The step of joining the joining surfaces further comprises joining the metal material by advancing the metal material when the joining surfaces are covered with the metal vapor and the molten metal. A power supply for supplying power;
Wherein the metal material is clamped by clamping the outer surface of the opposing metal material and supplied with electric power from the power supply device to supply a current required for welding to the bonding surface of the metal material and repeatedly contacting and separating the bonding surface, An electrical insulation displacement device for pressing the joint surface of the material to weld the metal material; And
And a controller for controlling the power supply device and the electric pressure welding device to control the welding current, the energization time, and the pressing force. 10. The method of claim 9,
The electric pressure-
A clamp for clamping the metal material;
A welding transformer for supplying a current necessary for joining the metal material; And
And an upsetting cylinder which repeatedly contacts and separates the bonding surface of the metal material. 11. The method of claim 10,
Wherein the upsetting cylinder presses the joining surface by bringing the opposing metal material into close contact with each other when the joining face of the metal material is used.

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