KR20130134809A - Assembling gas cup for narrow gap gtaw - Google Patents

Assembling gas cup for narrow gap gtaw Download PDF

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Publication number
KR20130134809A
KR20130134809A KR1020120058598A KR20120058598A KR20130134809A KR 20130134809 A KR20130134809 A KR 20130134809A KR 1020120058598 A KR1020120058598 A KR 1020120058598A KR 20120058598 A KR20120058598 A KR 20120058598A KR 20130134809 A KR20130134809 A KR 20130134809A
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KR
South Korea
Prior art keywords
gas cup
gas
gtaw
electrode
welding
Prior art date
Application number
KR1020120058598A
Other languages
Korean (ko)
Inventor
성희준
배범찬
김경주
Original Assignee
현대중공업 주식회사
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Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020120058598A priority Critical patent/KR20130134809A/en
Publication of KR20130134809A publication Critical patent/KR20130134809A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/26—Accessories for electrodes, e.g. ignition tips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

The present invention comprises an electrode rod; a gas cup body part of which the outer circumference becomes narrower towards the bottom and which covers the electrode rod; and a plurality of cup joints which is detachably attached to the gas cup body part at a variable length based on the depth of a narrow gap. The present invention replaces a gas cup only for the straight sections without replacing the entire gas cup based on the depth of a narrow gap; facilitates replacement for a gas cup by joining or detaching the straight sections of the gas cup by screwing; and improves portability by not necessarily carrying the entire gas cups for replacement.

Description

Assembling gas cup for narrow gap GTAW

The present invention relates to a GTAW gas cup, and more particularly, to an assembled GTAW gas cup capable of narrow improvement welding capable of replacing only a straight section of the gas cup according to a narrowing depth.

In general, gas tungsten arc welding (GTAW) refers to a welding technique for welding a weld by arc heat generated using a tungsten electrode.

However, the GTAW welding technique has a disadvantage in that oxidation of the weld occurs due to arc heat generated during welding for narrowing.

To this end, conventionally, a gas cup having a predetermined distance from the center of the welding rod to the left and right sides is attached to supply a protective gas to prevent oxidation of the welding portion.

However, conventional gas cups are initially designed long because they have to weld deep bottom portions during welding for narrowing.

Therefore, when the thickness of the weld metal is increased by welding, there is a problem that the entire gas cup has to be replaced because the narrowing depth is reduced accordingly.

In addition, since the entire gas cup has to be replaced according to the change in length, there is a hassle of having to provide a plurality of gas cups in the work.

A prior art document related to the present invention is Korean Patent No. 10-2010-0129435, which describes a technology for a torch for narrow-improving passive gas tungsten arc welding.

It is an object of the present invention to provide an assembled GTAW gas cup capable of narrow improvement welding without having to replace the entire gas cup according to the depth of narrowing by designing only the straight section of the gas cup.

In addition, an object of the present invention is to provide a assembled GTAW gas cup capable of narrow improvement welding can be replaced by a simple design by being able to screw and couple the straight section of the gas cup.

The assembled GTAW gas cup capable of narrow-impact welding according to the present invention is formed in a form surrounding the electrode rod and the electrode rod, and is detachable from the gas cup body portion and the gas cup body portion which are formed to narrow the outer diameter from the upper side to the lower side. It is characterized in that it comprises a plurality of gas cup coupling portion is formed possible and coupled to different lengths depending on the depth of narrowing.

Here, the electrode includes a copper electrode connected to the external welding device and a tungsten electrode coupled to the end of the copper electrode.

In addition, the gas cup body portion is coupled to the gas cup coupling portion through a screw coupling.

In addition, the gas cup body portion is provided with a fixing member for fixing and releasing the electrode.

Since the present invention can replace only the straight section of the gas cup, there is an effect that the entire gas cup does not need to be replaced depending on the narrowing depth.

In addition, the present invention has the effect that a simple replacement is possible because the screw can be coupled and separated in a straight section of the gas cup.

In addition, since the present invention does not include a plurality of gas cups for replacement, the portability can be improved.

1 is a cross-sectional view showing an assembled GTAW gas cup capable of narrow improvement welding according to the present invention.
Figure 2 is a cross-sectional view for showing the replacement of the assembled GTAW gas cup capable of narrow improvement welding according to the present invention.
Figure 3 is a perspective view showing the coupling of the assembled GTAW gas cup capable of narrow improvement welding according to the present invention.
4 is an embodiment of the assembled GTAW gas cup capable of narrow improvement welding according to the present invention.

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

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving it will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

It should be understood, however, that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In addition, in the following description of the present invention, if it is determined that related related technologies and the like may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a cross-sectional view showing an assembled GTAW gas cup capable of narrow improvement welding according to the present invention.

As shown in FIG. 1, the assembled GTAW gas cup capable of narrow improvement welding includes an electrode rod 100, a gas cup body part 200, and a gas cup coupling part 300.

First, the electrode 100 is positioned in the center portion to be spaced apart from the inner surface of the gas cup body portion 200 and the gas cup coupling portion 300 to be described later.

In addition, the electrode 100 is formed by combining the copper electrode 110 and the tungsten electrode 120.

The copper electrode rod 110 is connected to an external welding device (not shown) and is located inside the gas cup body part 100 and the gas cup coupling part 200 which will be described later.

Here, the reason why the copper electrode 110 is used is as follows.

If the electrode that supplies the current has a high resistance, heat is generated in the electrode itself.

Therefore, an electrode of a material having a very low electrical resistance should be used.

Thus, the copper electrode 110 can be used because the electrical resistance is low, copper is excellent in terms of cost and strength is suitable as the electrode.

On the other hand, one end of the copper electrode rod 110 is provided with a tungsten electrode rod 120 protruding in the lower direction of the gas cup coupling portion 300 to be described later.

The tungsten electrode rod 120 is spaced apart from the weld metal by a predetermined distance to weld the weld metal.

Here, the reason why the tungsten electrode 120 is used is as follows.

Electrodes used for Tungsten Inert Gas (TIG) welding must meet the conditions that high melting point, low electrical resistance, good thermal conductivity, ease of electron emission and pulses to adjust peak current and base current should be possible. to be.

On the other hand, the gas cup body portion 200 is formed in a form surrounding the electrode rod (100).

In addition, the gas cup body 200 is formed to be stepped downward so that the diameter of the upper end is larger than the diameter of the lower end.

In this case, the gas cup body 200 may have a constant distance between the weld metal and the tungsten electrode rod 120 because the upper portion of the downward stepped stepped surface is positioned on the upper portion of the welded portion.

In addition, since the gas cup body 200 is prevented from entering the weld for narrowing, stable welding is possible.

The gas cup coupler 300 is separated and coupled to the lower portion of the gas cup body 200.

In addition, the gas cup coupling part 300 includes a plurality of different lengths, and may be replaced according to a narrow depth.

Meanwhile, the assembled GTAW gas cup capable of narrow improvement welding may be provided with an Ar or He gas supply device (not shown) to prevent oxidation of the welding part.

Here, the Ar or He gas is a protective gas, the productivity is lowered, but the arc is stable and can be used when welding of a material sensitive to oxidation or nitriding because of excellent weld quality.

2 is a cross-sectional view showing the replacement of the assembled GTAW gas cup capable of narrowing welding according to the present invention.

As shown in FIG. 2, when the filler metal is injected, the gas cup coupling part 300 is replaced because the depth of narrowing decreases as the thickness of the weld metal becomes thicker.

The gas cup coupling part 300 is coupled to the gas cup coupling part 300 suitable for the depth because the deep part needs to be welded during the initial welding for narrowing.

Since the welding part is injected with the filler metal and the welding proceeds, the thickness of the weld metal becomes thicker as the welding operation is performed, and the narrowing depth is reduced by that amount.

Thus, the gas cup coupling unit 300 may be replaced according to the depth of narrowing.

Therefore, it is possible to replace with a plurality of gas cup coupling portion 300 in accordance with the narrow depth of change in one gas cup body portion 200, eliminating the hassle of changing the entire gas cup.

In addition, it is possible to replace by a simple coupling and separation, it is possible to improve the portability of the gas cup because only a plurality of gas cup coupling portion 300 is provided, not the entire gas cup.

3 is a perspective view showing the coupling of the assembled GTAW gas cup capable of narrow improvement welding according to the present invention.

As shown in FIG. 3, the gas cup body part 200 and the gas cup coupling part 300 are fastened through threaded coupling of the male thread 210 and the female thread 310.

First, a male screw thread 210 protrudes from a lower portion of the gas cup coupling portion in order to couple to the gas cup coupling portion 300 in the gas cup body portion 200.

The male thread mountain 210 is formed to protrude from the inner circumferential surface of the lower portion of the gas cup body 200.

In addition, the male screw thread 210 is formed in a hollow shape so that the electrode rod 100 passes therein.

Meanwhile, a female thread 310 is installed inside the gas cup coupling part 300 to couple the gas cup body part 200 to the gas cup coupling part 300.

The female screw thread 310 is formed on the inner circumferential surface of the gas cup coupling part 300 and is formed to a predetermined depth so that the male screw thread 210 may be fitted to the female screw thread 310.

The gas cup body portion 200 and the gas cup coupling portion 300, after tightening the female thread 310 of the gas cup coupling portion 300 to the male thread 210 of the gas cup body portion 200, It can be fastened and fixed through rotation.

In addition, the gas cup body 200 and the gas cup coupler 300 may be separated by rotating in a direction opposite to the direction of the fastening and fixing.

4 is an embodiment of the assembled GTAW gas cup capable of narrow improvement welding according to the present invention.

As shown in FIG. 4, the gas cup body part 200 may be moved up and down according to the replacement of the gas cup coupling part 300.

First, as the welding proceeds, when the thickness of the weld metal becomes thick, the depth of narrowing is reduced by that much.

Thus, the copper electrode 110 may be moved upward to replace the gas cup coupler 300 suitable for the narrowing depth.

As the copper electrode rod 100 moves upward, the tungsten electrode rod 120 coupled to one end of the copper electrode rod 100 also moves upward of the gas cup coupler 300.

If the initial welding of the welding unit is performed again, the existing gas cup coupling unit 300 is separated and the gas cup coupling unit 300 having the length necessary for the initial welding is coupled.

Next, the copper electrode 100 is moved downward to match the length of the gas cup coupling portion 300.

At this time, as the copper electrode 100 is moved downward, the tungsten electrode 120 is also moved downward.

On the other hand, the upper portion of the gas cup body portion 200 may be provided with a fixing member 400 for fixing after the movement of the electrode rod 100.

The fixing member 400 is fixed and released of the electrode rod 100 through opening and closing, and when the electrode rod 100 is moved, the electrode member 100 is opened to both sides and after the movement, the electrode member 100 can be fixed in close contact. have.

  As a result, the present invention can replace only the straight section of the gas cup, there is an effect that does not need to replace the entire gas cup in accordance with the narrowing depth.

In addition, the present invention has the effect that a simple replacement is possible because the screw can be coupled and separated in a straight section of the gas cup.

In addition, there is an effect that can improve the portability because it does not have a whole number of gas cups for replacement.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many modifications may be made thereto, It will be understood that all or some of the elements (s) may be optionally constructed in combination. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: electrode 110: copper electrode
120: tungsten electrode 200: gas cup body portion
210: male thread 300: gas cup coupling portion
310: female thread 400: fixing member

Claims (4)

Electrode;
A gas cup body part formed to surround the electrode rod and formed to have an outer diameter narrowed from an upper side to a lower side; And
And a plurality of gas cup coupling parts formed to be detachably attached to the gas cup body part and coupled to different lengths according to the depth of the narrowing of the gas cup body.
The method of claim 1,
The electrode rod,
Copper electrode rods connected to the external welding device; And
And a tungsten electrode rod coupled to an end of the copper electrode rod.
The method of claim 1,
The gas cup body portion,
Assembly type GTAW gas cup capable of narrow improvement welding, characterized in that coupled to the gas cup coupling portion through a screw coupling.
The method of claim 1,
The gas cup body portion,
Assembly type GTAW gas cup capable of narrow improvement welding characterized in that it comprises a fixing member for fixing and releasing the electrode.
KR1020120058598A 2012-05-31 2012-05-31 Assembling gas cup for narrow gap gtaw KR20130134809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120058598A KR20130134809A (en) 2012-05-31 2012-05-31 Assembling gas cup for narrow gap gtaw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120058598A KR20130134809A (en) 2012-05-31 2012-05-31 Assembling gas cup for narrow gap gtaw

Publications (1)

Publication Number Publication Date
KR20130134809A true KR20130134809A (en) 2013-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120058598A KR20130134809A (en) 2012-05-31 2012-05-31 Assembling gas cup for narrow gap gtaw

Country Status (1)

Country Link
KR (1) KR20130134809A (en)

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