KR20140040339A - A welding method for railway structure - Google Patents

A welding method for railway structure Download PDF

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Publication number
KR20140040339A
KR20140040339A KR1020120106560A KR20120106560A KR20140040339A KR 20140040339 A KR20140040339 A KR 20140040339A KR 1020120106560 A KR1020120106560 A KR 1020120106560A KR 20120106560 A KR20120106560 A KR 20120106560A KR 20140040339 A KR20140040339 A KR 20140040339A
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KR
South Korea
Prior art keywords
railway
friction stir
receiving groove
locking
welding
Prior art date
Application number
KR1020120106560A
Other languages
Korean (ko)
Inventor
류승철
김상훈
김특기
Original Assignee
류승철
김상훈
김특기
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 류승철, 김상훈, 김특기 filed Critical 류승철
Priority to KR1020120106560A priority Critical patent/KR20140040339A/en
Publication of KR20140040339A publication Critical patent/KR20140040339A/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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1265—Non-butt welded joints, e.g. overlap-joints, T-joints or spot welds
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/24—Preliminary treatment
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/24—Frameworks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The present invention relates to a method for welding a hollow railway structure. The present invention includes: a railroad structure fixing step for fixing respective jaws of a first structure and a second structure to interpose each other by inserting and coupling the jaws of the first and second structures into the accommodating units, respectively, wherein the first structure has at least one jaw and accommodation groove in one end part of a first frame forming a railroad, and the second structure has at least one jaw and accommodation groove in one end part of a second frame to correspond to the first structure; and a friction stir welding step for performing friction stir welding at the connecting part of the first structure and the second structure using a connecting means. Therefore, the method for welding a hollow railway structure can reduce the process of jig for fixing the railroad structure and can improve bond strength by minimizing clearance between the railroad structures.

Description

A welding method for railway structure}

The present invention relates to a welding method for a railway structure that is a hollow member.

In general, the railway structure is formed to have a hollow space therein by extrusion molding, the prior art has been carried out a variety of welding methods to form a track using such a railway structure.

For example, the Republic of Korea Patent Publication No. 10-2010-0074074, "hollow member structural joining method" is a method of joining a hollow member structure through friction stir welding by inserting a river of a simple shape without changing the shape of the extruded material or changing only a part. Is disclosed.

In detail, FIGS. 1 and 2 are views for explaining a method of joining a hollow member structure according to the prior art.

Referring to these drawings, in the prior art, first, the first joining member 10 and the second joining member 20 and the first joining member 10 and the second joining member 20 having symmetrical shapes to each other are connected. The river 30 is provided.

Then, the upper coupling portion 10a of the first bonding member 10 and the upper coupling portion 30a of the river 30 are connected to the upper surface portion 20a of the second bonding member 20, and the first bonding The lower coupling portion 30b of the river 30 is connected to the lower surface portion 10b of the member 10 and the lower surface portion 20b of the second bonding member 20.

In the above state, the probe 1b of the friction stir welding tool 1 is inserted into the upper coupling portion 30a and flows in the upper surface of the river 30 using the concave shape of the lower surface of the body 1a. Friction stir welding is performed.

Then, for welding the lower coupling portion 30b, the first bonding member 10 and the second bonding member 20 are turned upside down or the friction stir welding tool is positioned as the lower coupling portion 30b, and then the friction stir welding tool is used. The friction stir welding is carried out by inserting the lower coupling part 30b to flow at the lower surface part.

However, in the prior art as described above, a plurality of fixing teeth JIG is required to firmly fix the first joining portion 10 and the second joining member 20 for friction stir welding.

That is, the friction stir welding tool 1 is inserted into and rotated on the upper or lower portion of the river 30 while the first bonding member 10 and the second bonding member 20 are connected by the river 30. If it is to be fixed to the fixing unit for fixing the first bonding member 10 and the second bonding member 20 is not pushed.

In addition, even when the fixing jig is provided, poor bonding may occur when the fixing jig is not firmly fixed.

In addition, when a plurality of fixed teeth are required as in the prior art, the process for the fixed teeth is increased, thereby increasing the working time.

An object of the present invention is to provide a welding method of a railway structure to reduce the number of processes of the fixed tooth for fixing the railway structure to improve the work efficiency.

Another object of the present invention is to provide a method for welding a railway structure, so that friction welding can be performed without changing the position of the fixing teeth for fixing the railway structure.

The present invention provides a first structure in which at least one locking step and a receiving groove are formed at one end of the first frame forming the track, and at least one locking step and a receiving groove is formed at one end of the second frame so as to correspond to the first structure. And a first structure using a railway structure fixing step and a joining means, the second structure being fastened so that each latching jaw of the first structure and the second structure is fitted to each receiving portion, and the locking jaws are fixed to interfere with each other. And a friction stir welding step of performing friction stir welding on the fastening portion of the second structure.

In the fixing of the railway structure, a third structure for connecting the first structure and the second structure is further provided, and the first structure includes a first latching jaw and a first accommodating groove and the first structure coupled to the second structure. A third locking jaw and a third receiving groove fastened to the third structure are formed, and the second locking jaw and the second receiving groove fastened to the first structure and the fourth locking fastening to the third structure are formed on the second structure. A jaw and a fourth accommodation groove are formed, and the third structure is characterized in that the fifth locking jaw and the fifth accommodation groove are fastened to the first structure and the second structure.

In the friction stir welding step, the first catching jaw and the second catching jaw formed in the first structure and the second structure are fixed to interfere with each other, and then the friction stir welding step is performed so that the first structure and the second structure are first. Welded and fixed to the fifth locking jaw formed in the third structure so as to interfere with each other with the third locking jaw of the first structure and the fourth locking jaw of the second structure; The fastening portion of the second structure and the third structure is characterized in that the welding by the friction stir welding step.

In the step of fixing the railway structure is characterized in that the side portion of each of the engaging jaw and the receiving groove is formed to protrude outwards is fitted to each other from the side.

According to the present invention, the locking jaws formed in the structures forming the tracks protrude and lock in a direction opposite to each other, so that a separate fixing tooth for preventing the structure from being pushed is not necessary.

Therefore, the work required to install and dismantle the fixed tooth is reduced, there is an advantage that workability is improved.

In addition, according to the present invention, the locking step formed in each structure is fitted and fixed in the corresponding receiving groove.

Accordingly, when friction stir welding is performed using the joining means, the gap formed between the structures is pushed down, thereby improving the joining strength.

In the present invention, when the first structure and the second structure includes a third structure connecting the first and second structures, the first structure and the second structure are first fastened to perform friction stir welding, and then the third structure. The friction stir welding can be performed without the need of dismantling the fixed tooth first installed for the friction stir welding by performing friction stir welding.

Therefore, there is an advantage that the welding process is simplified.

In addition, according to the present invention has the advantage that the shape of the fixing teeth for fixing the structure can be more simple as the coupling relationship between the structure is formed by the locking step and the receiving groove as described above.

1 and 2 are views for explaining a joining method of a hollow member structure according to the prior art.
Figure 3 is a view showing an embodiment of a first structure which is a main component of the railway structure welding method according to the present invention.
Figure 4 is a view showing an embodiment of a second structure which is a main component of the railway structure welding method according to the present invention.
5 and 6 are views showing a state in which the railway structure shown in Figures 3 and 4 are fastened.
7 is a view showing a state in which the welding of the railway structure by the welding tool in the same state as in FIGS.
8 and 9 are views for showing another embodiment of the railway structure according to the present invention.
10 is a view showing another embodiment of the first structure which is a main component of the railway structure according to the present invention.
11 is a view showing another embodiment of a second structure which is a main part of the railway structure according to the present invention;
12 is a view showing a third structure that is a main component of the railway structure according to the present invention;
13 is a view for showing a welding process of the structures shown in FIGS.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

Figure 3 is a view showing an embodiment of a first structure which is a main structure of the railway structure welding method according to the present invention, Figure 4 is a view of a second structure of the main structure of the railway structure welding method according to the present invention An illustration showing an embodiment is shown, and FIGS. 5 and 6 illustrate a state in which the railway structure shown in FIGS. 3 and 4 is coupled.

Referring to these drawings, the railway structure welding method according to the present invention is first subjected to the railway structure fastening step of forming and fastening so that the first structure 100 and the second structure 200 forming the line can be fastened to each other.

In detail, the first structure 100 and the second structure 200 are each extruded to form a hollow portion, and the end portions of the first structure 100 and the opposite ends of the second structure 200 are fastened to each other. At least one catching jaw and at least one accommodating groove may be formed to accommodate the catching jaw so as to be interfered with.

That is, as shown in FIG. 3, the first structure 100 includes a first frame 110 forming a line and a first junction 120 formed at the right end of the first frame 110. Is extruded.

In addition, the first junction portion 120 is formed so that the upper and lower portions are symmetrical with respect to the center portion, and as long as the protruding length of the first engaging jaw 122 and the first engaging jaw 122 formed to protrude outward from the central portion. It has a first receiving groove 124 is formed recessed inward.

On the other hand, the second structure 200 is formed on the second frame 210 and the left end of the second frame 210, similar to the first structure 100 and the first junction portion 120 Extruded to include a second junction 220 that is fastened with.

To this end, the second junction 220 is the second receiving groove 224 in a shape corresponding to the second receiving groove 224 and the first receiving groove 124 is accommodated therein. It has a second locking step 222 protruding toward the center direction of the).

That is, in the first structure 100 and the second structure 200 having the shape as described above, as shown in FIGS. 5 and 6, the first locking jaw 122 and the second locking jaw 222 interfere with each other. To be fastened. And, for this purpose, the first structure 100 or the second structure (such that the second engaging jaw 222 of the second junction 220 is fitted into the first receiving groove 124 of the first junction 120) 200) by pushing it to the side to fix it.

Therefore, when fastened as described above, the first structure 100 and the second structure 200 are not pushed from side to side during the welding operation, and thus, the first and second structures 100 and 200 are prevented from sliding back and forth without a separate fixing tooth for preventing left and right rolling. Fixing teeth may be installed only on the side surfaces of the structure 100 and the second structure 200.

That is, according to the present invention, the left and right sliding of the first structure 100 and the second structure 200 may be prevented by interfering with the first locking jaw 122 and the second locking jaw 222 without a separate fixing portion. Therefore, the friction stir welding can be performed after only the fixed tooth part is installed to prevent the front and rear side push.

In detail, FIG. 7 is a view showing the welding of the railway structure by the welding tool in the same state as in FIGS. 5 and 6.

When the first joint part 120 and the second joint part 220 are fastened to each other, a friction stir welding step for firmly fixing the first joint part 120 and the second joint part 220 is performed.

In the friction stir welding step, as shown in FIG. 7, the connecting portion of the first junction portion 120 and the second junction portion 220 positioned above is first welded.

When the welding of the upper part is completed, the fixed tooth part fixing the side portions of the first structure 100 and the second structure 200 is removed, and then the first structure 100 and the second structure having the upper part coupled to each other. Overturn 200 to perform the welding of the lower part.

In the friction stir welding step, a friction stir welding device is used as the joining means 500. The friction stir welding device has advantages such as mechanical properties, reduction of welding defects, material savings, etc., compared to general welding methods because the welding is performed by melting the joint.

On the other hand, the railway structure according to the present invention may have the following embodiments.

8 and 9 are views for showing another embodiment of the railway structure according to the present invention.

As shown in these figures, in another embodiment of the present invention, the first locking step 122 and the first receiving recess 124 of the first structure 100 and the second locking step 222 of the second structure 200. ) And the shape of the second receiving groove 224 is different from the above-described embodiment.

That is, the first catching portion 122 and the second catching jaw 222 is formed so that the side portion protrudes outward for a more secure fastening structure, the second receiving groove 224 and the first receiving groove 124 ) Is extruded to be recessed to correspond to the shape of the locking step to be fastened.

When the first structure 100 and the second structure 200 are molded as described above, the first joint portion 120 and the second structure 200 of the first structure 100 are formed in the same manner as in the above-described embodiment. After fitting the two joints 220 to each other, the upper part is welded first, and then the lower part is welded.

Meanwhile, in the railway structure welding method according to the present invention, a third structure 300 may be further provided in addition to the first structure 100 and the second structure 200 of the above-described embodiment.

Figure 10 is a view showing another embodiment of the first structure of the main structure of the railway structure according to the present invention, Figure 11 is another embodiment of the second structure of the main structure of the railway structure according to the present invention Figure is shown, Figure 12 is a view showing a third structure which is the main structure of the railway structure according to the present invention. And, Figure 13 is a view for showing the welding process of the structures shown in Figures 10 to 12.

Referring to these drawings, in another embodiment of the present invention, the first structure 100 and the second structure 200 are not changed in the position where the first structure is first coupled, a part of the third structure 300 by using Configured to lock.

To this end, in another embodiment of the present invention, unlike the above-described embodiment, the upper portion of the first frame 110 of the first structure 100 and the upper portion of the second frame 210 of the second structure 200 are shown in FIGS. As shown in each of 11, it is formed to be shorter than the lower portion is configured to be connected by the third structure (300).

That is, in another embodiment of the present invention, the second bonding portion 220 formed in the second frame 210 is seated and fastened above the first bonding portion 120 formed in the first frame 110. In addition, the first junction part 120 and the second junction part 220 are first welded by the joining means 500 before the third structure 300 is fastened.

On the other hand, after the friction stir welding of the connection between the first junction portion 120 and the second junction portion 220 is completed, the third structure 300 to connect the first frame 110 and the second frame 210. Is combined.

The third structure 300 protrudes downward from both ends of the third frame 310 having a width corresponding to the widths of the first frame 110 and the second frame 210 and the third frame 310. A fifth accommodating groove 314 is formed to be relatively recessed by the protruding length of the fifth engaging jaw 312 and the fifth engaging jaw 312.

In addition, the first structure 100 is fitted into the third receiving groove 144 and the third receiving groove 144 so that one of the fifth locking jaws 312 formed in the third structure 300 is fitted into the first structure 100. A third joining part 140 in which a third catching jaw 142 interferes with the mounted fifth catching jaw 312 is formed.

In addition, similar to the first structure 100, the fourth junction 240 including the fourth receiving groove 244 and the fourth locking jaw 242 is formed in the second structure 200, and the remaining fifth locking jaw is formed. 312 is fitted so that it can be fixed.

When the third structure 300 is fitted to the third junction 140 and the fourth junction 240 as described above, as shown in FIG. 13, friction is achieved by using the joining means 500 at the fitting fixing portion. The first structure 100, the second structure 200, and the third structure 300 may be connected by performing stirring welding.

On the other hand, when connecting the railway structure as described above, after the first installation of the fixing teeth for preventing the front and rear rolling of the first structure 100 and the second structure 200, the third without removing the fixed teeth installed Since the friction stir welding may be performed by connecting the structure 300, the work process may be reduced to improve workability.

100 ..... First Structure 110 ..... First Frame
120 ..... the first junction 122 ..... the first locking step
124 ..... 1st accommodating groove 140 ..... 3rd junction
142 ..... 3rd hanging jaw 144 ..... 3rd receiving groove
200 ..... the second structure 210 ..... the second frame
222 ..... 2nd hanging jaw 224 ..... 2nd receiving groove
240 ..... Fourth junction 242 ..... Fourth locking jaw
244 ..... 4th receiving groove 300 ..... 3rd structure
310 ..... 3rd Frame 312 ..... Fifth Hanging Jaw
314 ..... 5th receiving groove 500 ..... joining means

Claims (4)

A first structure in which at least one locking step and a receiving groove are formed at one end of the first frame forming a line, and a second in which at least one locking step and a receiving groove is formed at one end of the second frame so as to correspond to the first structure A railway structure fixing step including a structure to fasten each locking step of the first structure and the second structure to be fitted to each receiving unit, and to fix the locking step to interfere with each other; And
Friction stir welding step of performing a friction stir welding to the fastening portion of the first structure and the second structure using the joining means; welding method of a railway structure comprising a
According to claim 1, In the railway structure fixing step,
A third structure for connecting the first structure and the second structure is further provided,
The first structure is provided with a first locking jaw and the first receiving groove and the third receiving jaw and the third receiving groove to be fastened to the second structure,
The second structure is provided with a second locking jaw and the second receiving groove which is fastened to the first structure and the fourth locking jaw and a fourth receiving groove fastened to the third structure,
The third structure is a welding method of a railway structure, the fifth locking step and the fifth receiving groove is fastened to the first structure and the second structure is formed. According to claim 2, In the friction stir welding step,
The first locking jaw and the second locking jaw formed in the first structure and the second structure are fixed to interfere with each other, and then a friction stir welding step is performed to weld the first structure and the second structure first,
The fifth locking jaw formed in the third structure is fixed to interfere with each other and the third locking jaw of the first structure and the fourth locking jaw of the second structure so that the fastening portion and the second structure of the first structure and the third structure are fixed. And the fastening portion of the third structure is welded by the friction stir welding step.
According to claim 1 or 2, In the railway structure fixing step,
And a side portion of each of the locking jaws and the receiving groove is formed to protrude outward and is fitted to each other from the side.




KR1020120106560A 2012-09-25 2012-09-25 A welding method for railway structure KR20140040339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120106560A KR20140040339A (en) 2012-09-25 2012-09-25 A welding method for railway structure

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Application Number Priority Date Filing Date Title
KR1020120106560A KR20140040339A (en) 2012-09-25 2012-09-25 A welding method for railway structure

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KR20140040339A true KR20140040339A (en) 2014-04-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018017971A1 (en) * 2016-07-22 2018-01-25 HFW Solutions, Inc. System and method for interlocking structural members
US20240165728A1 (en) * 2022-11-22 2024-05-23 Fca Us Llc Extruded weld joint backing insert

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018017971A1 (en) * 2016-07-22 2018-01-25 HFW Solutions, Inc. System and method for interlocking structural members
US10087618B2 (en) 2016-07-22 2018-10-02 HFW Solutions, Inc. System and method for interlocking structural members
US20240165728A1 (en) * 2022-11-22 2024-05-23 Fca Us Llc Extruded weld joint backing insert

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