KR102132579B1 - Formation method of pointing weld line - Google Patents

Formation method of pointing weld line Download PDF

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Publication number
KR102132579B1
KR102132579B1 KR1020200045138A KR20200045138A KR102132579B1 KR 102132579 B1 KR102132579 B1 KR 102132579B1 KR 1020200045138 A KR1020200045138 A KR 1020200045138A KR 20200045138 A KR20200045138 A KR 20200045138A KR 102132579 B1 KR102132579 B1 KR 102132579B1
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South Korea
Prior art keywords
pointing
pipe
welding
pointing portion
drawing pipe
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KR1020200045138A
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Korean (ko)
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최동규
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최동규
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Priority to KR1020200045138A priority Critical patent/KR102132579B1/en
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Publication of KR102132579B1 publication Critical patent/KR102132579B1/en
Priority to CN202011412656.6A priority patent/CN113523712B/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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0538—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor for rotating tubes, e.g. rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • 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
    • B23K9/013—Arc cutting, gouging, scarfing or desurfacing
    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Metal Extraction Processes (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The present invention relates to a method of forming a pointing portion with a weld line formed on a blank drawing area which prevents damage to a weld portion. The method comprises: a step of leaving the length of a pipe for blank drawing in a bending portion (205) of a pointing potion (202) and cutting the rest of the pipe to prepare a pointing portion to be welded; a step of positioning a drawing pipe (201) on an adjustment roller (253, 254) formed on a cart (251, 252) moving along a rail (261) to be height-adjusted; a step of moving the cart (251, 252) to place the cart (251, 252) on a drawing pipe lower roller (241), placing the pointing portion (202) on a pointing portion lower roller (243) to match an end of the pointing portion (202) and an end of the drawing pipe (202), and then lowering a drawing pipe upper roller (242) and a pointing portion upper roller (244) to arrange the drawing pipe (201) and the pointing portion (202) at the right position for automatic rotation welding for pressing an upper portion of the drawing pipe (201) and the pointing portion (202); a step of welding while the drawing pipe (201) and the pointing portion (202) rotate one revolution after adjusting the direction and position of a CO_2 welding torch to position a weld line on a bank drawing area (A); and a step of forming an air hole on the pointing portion (202) welded by a plasma torch.

Description

공인발구간에 용접선이 형성된 포인팅부 형성방법{Formation method of pointing weld line}Forming method of pointing weld line with a welding line formed in the official footing section

본 발명은 포인팅부(202)의 꺽임부(205)에서 공인발이 일어나는 파이프 길이만큼만 남기고 절단하여 용접할 포인틴부를 준비하는 단계;The present invention comprises the steps of preparing a pointin portion to be welded by cutting and leaving only the length of the pipe in which the official foot occurs at the bent portion 205 of the pointing portion 202;

레일(261)을 따라 움직이는 대차(251,252)에 형성되어 높이 조절되는 조절롤러(253,254) 위에 인발파이프(201)을 위치시키는 단계;Positioning the drawing pipe 201 on the adjustment rollers (253,254) is formed on the bogie (251,252) moving along the rail 261 is adjusted to the height;

대차(251,252)를 이동시켜 인발파이프(201) 끝부분을 인발파이프 하부롤러(241) 위에 올리고, 포인팅부(202)를 포인팅부 하부롤러(243)에 올려 포인틴부(202) 끝과 인발파이프(202) 끝을 맞춘 다음, 인발파이프 상부롤러(242)와 포인팅부 상부롤러(244)를 내려서 인발파이프(201) 및 포인팅부(202)의 상부를 눌러주는 자동회전용접을 위해 인발파이프(201) 및 포인팅부(202)를 정위치 시키는 단계; By moving the carts 251 and 252, the end of the drawing pipe 201 is placed on the lower pipe 241 of the drawing pipe, and the pointing portion 202 is placed on the lower roller 243 of the pointing portion and the tip of the pointing portion 202 and the drawing pipe ( 202) After aligning the ends, the drawing pipe upper roller 242 and the pointing portion upper roller 244 are lowered and the drawing pipe 201 and the drawing portion 201 are pressed for automatic rotation welding to press the upper portions of the drawing pipe 201 and the pointing portion 202. And positioning the pointing unit 202 in place.

CO2용접토치의 방향 및 위치를 조절한 다음 인발파이프(201) 및 포인팅부(202)가 1회전하면서 용접하되 용접선이 공인발구간(A)에 위치되도록 용접하는 단계;Adjusting the direction and position of the CO 2 welding torch and then welding while the drawing pipe 201 and the pointing portion 202 are rotated by one rotation, but welding such that the welding line is located in the official footing section A;

플라즈마 토치에 의해 용접된 포인팅부(202)에 에어구멍을 형성하는 단계;를 포함하는 것을 특징으로 하는 공인발구간에 용접선이 형성된 포인팅부 형성방법에 관한 것이다.Forming an air hole in the pointing portion 202 welded by the plasma torch; relates to a method of forming a pointing portion formed with a welding line in the official footing comprising a.

파이프 인발은 포인팅부를 집어 당겨서 다이스와 플러그 사이로 엄청난 압착력으로 파이프를 압착, 통과시키면서 인발하며, 이 때 집어서 당기는 부분인 포인팅부는 파이프 끝부분을 눌러서 만든 것이며, 인발 후 포인팅부는 절단하여 폐기 하였다.The pipe drawing is drawn by pulling the pointing part and squeezing and passing the pipe with a great pressing force between the die and the plug, and at this time, the pointing part, which is the pulling part, is made by pressing the end of the pipe, and after drawing, the pointing part is cut and discarded.

이러한 폐기되는 포인팅부를 재활용하기 위하여 본 발명의 동일출원인은 파이프의 끝부분에 폐기되는 포인팅부를 용접하여 사용하는 기술을 특허출원 제10-2019-0155055호로 출원하여 등록받았다.In order to recycle such a discarded pointing part, the same applicant of the present invention applied for and registered a technique of using a pointing part that is discarded at the end of a pipe by applying as a patent application No. 10-2019-0155055.

그러나 상기 제10-2019-0155055호로 출원기술을 사용해 본 바, 용접선 부분에서 찢어지는 등의 파손이 발생하는 문제점이 있었으며, 이는 인발과정에서 큰 힘으로 당겨 다이스와 플러그 사이에서 압착되면서 응력이 존재하는 용접선 부분에서 파손이 발생하였던 것이다.However, as a result of using the application technology as the above-mentioned No. 10-2019-0155055, there was a problem of breakage such as tearing in the welding line, which is stressed by pulling with a great force during the drawing process and squeezing between the die and the plug. Damage occurred in the welding line.

이와 같은 문제점을 해결하기 위하여 다각도로 노력한 바, 인발 시 포인팅부의 꺽임부(205)에서 1-2cm 가량은 내경은 인발되지 않고 외경만 인발되는 공인발구간이 발생하는 것을 알 수 있었으며, 공인발구간은 내경은 인발되지 않고 외경만 인발됨으로써 그만큼 압착력이 저감되는 구간으로, 본 발명은 파이프와 포인팅부를 연결하는 용접선을 상술한 공인발구간에 형성함으로써 인발과정에서 용접선의 파손을 방지할 수 있었던 것이다.In order to solve such a problem, various efforts were made, and it was found that when drawing, an authorized section in which the inner diameter is not drawn but only the outer diameter is drawn about 1-2 cm from the bending part 205 of the pointing section, and the authorized section The inner diameter of the silver is not drawn, but only the outer diameter is drawn, so that the compressive force is reduced, and the present invention was to prevent damage to the welding line during the drawing process by forming a welding line connecting the pipe and the pointing portion in the above-mentioned authorized section.

종래기술로서 등록특허 제10-1041280호에 파이프를 올려서 레일을 따라 이동할 수 있고 상하 높이 조절하는 롤러가 설치된 회전 자동용접장치가 공지되어 있으며, 공개특허공보 제10-1995-0024826호에 CO2용접기의 용접조건을 디지털방식으로 설정하는 것이 공지되어 있으며, 특허등록 제10-0254921호에 CO2가스 절감형 용접기가 공지되어 있다.As a prior art, a rotating automatic welding device is known, which is capable of moving along a rail by raising a pipe in Patent No. 10-1041280 and equipped with rollers that adjust the height up and down, and a CO 2 welding machine in Patent Publication No. 10-1995-0024826. It is known to set the welding conditions of the digital method, and in the patent registration No. 10-0254921, a CO 2 gas saving welding machine is known.

본 발명은 본 출원인의 선특허출원 제10-2019-0155055호에서 파이프와 포인팅부의 용접선에서 인발과정에서 파손되는 문제점을 해결한 것으로, 파이프와 포인팅부의 용접선이 공인발구간(A)에 위치하도록 형성함으로써 인발과정에서 용접부분에서 파손이 발생하지 않은 최적화된 포인팅부 형성방법을 제공함을 발명의 목적으로 한다.The present invention solves the problem of being damaged in the drawing process in the welding line of the pipe and the pointing part in the prior patent application No. 10-2019-0155055 of the applicant, and formed so that the welding line of the pipe and the pointing part is located in the authorized foot section (A) Accordingly, it is an object of the invention to provide an optimized pointing part forming method in which no damage occurs in a welded part in a drawing process.

이러한 목적을 달성하기 위하여, 본 발명은 포인팅부(202)의 꺽임부(205)에서 공인발이 일어나는 파이프 길이만큼만 남기고 절단하여 용접할 포인틴부를 준비하는 단계;In order to achieve this object, the present invention comprises the steps of preparing a pointin portion to be welded by cutting and leaving only the length of the pipe in which the official foot occurs in the bending portion 205 of the pointing portion 202;

레일(261)을 따라 움직이는 대차(251,252)에 형성되어 높이 조절되는 조절롤러(253,254) 위에 인발파이프(201)을 위치시키는 단계;Positioning the drawing pipe 201 on the adjustment rollers (253,254) is formed on the bogie (251,252) moving along the rail 261 is adjusted to the height;

대차(251,252)를 이동시켜 인발파이프(201) 끝부분을 인발파이프 하부롤러(241) 위에 올리고, 포인팅부(202)를 포인팅부 하부롤러(243)에 올려 포인틴부(202) 끝과 인발파이프(202) 끝을 맞춘 다음, 인발파이프 상부롤러(242)와 포인팅부 상부롤러(244)를 내려서 인발파이프(201) 및 포인팅부(202)의 상부를 눌러주는 자동회전용접을 위해 인발파이프(201) 및 포인팅부(202)를 정위치 시키는 단계; By moving the carts 251 and 252, the end portion of the drawing pipe 201 is placed on the lower roller 241 of the drawing pipe, and the pointing portion 202 is placed on the lower roller 243 of the pointing portion and the tip of the pointing portion 202 and the drawing pipe ( 202) After aligning the ends, the drawing pipe upper roller 242 and the pointing portion upper roller 244 are lowered and the drawing pipe 201 and the drawing portion 201 are pressed for automatic rotation welding to press the upper portions of the drawing pipe 201 and the pointing portion 202. And positioning the pointing unit 202 in place.

CO2용접토치의 방향 및 위치를 조절한 다음 인발파이프(201) 및 포인팅부(202)가 1회전하면서 용접하되 용접선이 공인발구간(A)에 위치되도록 용접하는 단계;Adjusting the direction and position of the CO 2 welding torch and then welding while the drawing pipe 201 and the pointing portion 202 are rotated by one rotation, but welding such that the welding line is located in the official footing section A;

플라즈마 토치(미도시)에 의해 용접된 포인팅부(202)에 에어구멍을 형성하는 단계;를 포함하는 것을 특징으로 하는 공인발구간에 용접선이 형성된 포인팅부 형성방법에 관한 것이다.And forming an air hole in the pointing portion (202) welded by a plasma torch (not shown). The present invention relates to a method of forming a pointing portion having a welding line formed therein.

본 발명에서 꺽임부(205)에서 공인발이 일어나는 파이프 길이만큼만 남기고 절단하는 길이는 1.5cm 이하가 바람직하다.In the present invention, it is preferable that the length of the cut and leave only the length of the pipe where the official foot occurs in the bent portion 205 is 1.5 cm or less.

본 발명은 인발에 사용되고 난 후 절단되어 폐기되는 포인팅부를 재활용하는 과정에서 파이프와 포인팅부의 용접선에서 파손이 일어나는 문제점을 해결하기 위하여, 인발 시 포인팅부의 꺾임부(205)에서 파이프 방향으로 1-2cm 정도가 외경에만 인발이 일어나고 내경은 인발이 일어나지 않는 공인발 현상을 발견하였으며, 공인발구간은 외경에만 인발이 일어나는 관계로 파이프에는 걸리는 인장력, 압축력은 감소하는 것을 알 수 있었으며, 따라서 파손이 일어나는 용접부분을 공인발구간에 형성함으로써 인발 시 발생하는 용접선 부분의 파손을 방지할 수 있었다.The present invention is used in the drawing, in order to solve the problem of damage occurring in the welding line of the pipe and the pointing portion in the process of recycling the pointing portion that is cut and discarded, about 1-2 cm in the direction of the pipe from the bending portion 205 of the pointing portion during drawing It was found that the pull-out occurs only at the outer diameter and the inner diameter does not occur, and the tensile force and compression force applied to the pipe are reduced because the pull-out occurs only at the outer diameter. By forming in the official foot section, it was possible to prevent the breakage of the welding line portion generated during drawing.

폐기되는 포인팅부는 꺾임부에서 절단부분까지 길이가 수 cm 이상 많게는 10cm 이상 길었으며, 이와 같이 길게 폐기되는 포인팅부의 파이프 부분을 공인발이 일어나는 구간만큼만 남기고, 바람직하게는 꺾임부(205)에서 1.5cm 이하로 절단하며, 절단한 포인팅부와 인발할 파이프를 용접함으로써 용접선이 공인발구간 내에 형성되도록 한 것이다.The pointing part to be discarded has a length from a bent portion to a cutting portion of several centimeters or more and is at least 10 cm long, leaving only the pipe portion of the pointing portion that is discarded as long as the section where the official foot occurs, preferably less than 1.5 cm from the bent portion 205. It is cut by and welded pointing part and pipe to be pulled to form a welding line in the authorized foot section.

이와같이 본 발명은 용접선을 공인발구간(A)에 형성함으로써 인발 시 용접선 부분에서 찢어지는 등의 파손문제를 완전하게 해결한 것이다.As described above, the present invention completely solves the problem of damage such as tearing in the welding line portion during drawing by forming the welding line in the authorized foot section (A).

본 발명은 파이프와 포인팅부을 용접 결합하는 용접선을 포인팅부의 꺽임부(205)에서 파이프 방향으로 수 cm이내에 있는 공인발구간(A)에 형성함으로써 인발과정에서 용접선 부분에서 찢어지거나 파손되는 것을 방지하는 효과가 있으며, 이러한 재활용 과정에서의 문제점을 해결함으로써 버려지는 포인팅부를 재활용하는데 크게 기여할 수 있게 된 것이다.The present invention is an effect of preventing tearing or breakage in the welding line portion during the drawing process by forming a welding line connecting the pipe and the pointing part by welding in an authorized foot section (A) within a few centimeters in the pipe direction from the bending part 205 of the pointing part. By solving the problems in this recycling process, it is possible to greatly contribute to recycling the discarded pointing part.

도 1: 본 발명 의 대차 위에 인발파이프를 올린 상태를 보여주는 것이다.
도 2: 본 발명의 용접부위의 인발파이프 및 포인팅부를 고정 조절하는 구성을 보여주는 것이다.
도 3: 본 발명의 일 실시예로서 인발부 단면을 보여주는 것이다.
도 4: 인발부에서 공인발구간을 보여주는 것이다.
도 5: 인발 파이프의 공인발구간을 보여주는 것이다.Figure 1: It shows the state of the drawing pipe on the bogie of the present invention.
Figure 2: shows a configuration for fixing the drawing pipe and the pointing portion of the welding portion of the present invention.
Figure 3: As an embodiment of the present invention is to show the cross-section of the draw.
Figure 4 shows the official footing section in the drawing section.
Figure 5: shows the authorized foot section of the drawing pipe.

본 발명은 도 2에서 보는 바와 같이 2대의 레일(261)을 따라 움직이고 높이를 조절할 수 있는 조절롤러(253,254)가 형성된 대차(251,252)를 설치하고 대차 위에 인발파이프를 올리며, 또한 인발파이프의 용접부분은 높이 조절되는 인발파이프 하부롤러(241)와 승하강하는 인발파이프 상부롤 러(242)에 의해 끝을 조절할 수 있도록 형성한 것이다.The present invention installs the bogies 251 and 252 with the control rollers 253 and 254 formed to move and adjust the height along the two rails 261, as shown in FIG. 2, and raises the draw pipe on the bogie, and also welds the drawn pipe Is formed so that the end can be adjusted by the height-controlled drawing pipe lower roller 241 and the drawing pipe upper roller 242 that moves up and down.

본 발명에서 포인팅부(202)는 대부분 찌그러진 부분과 비교적 짧은 원통부분으로 이루어져 있어 인발파이프(201)에 자동 회전 용접되도록 위치와 방향을 조절할 수 있도록 하기 위하여, 포인팅부 하부롤러(243)과 포인팅부 상부롤러(244) 사이에 포인팅부(202)의 찌그러지지 않은 원통부분를 물려서 회전할 수 있도록 고정하면서 포인팅부(202)이 끝과 인발파이프(201) 맞추어 용접할 수 있도록 형성한 것이다.In the present invention, the pointing portion 202 is mostly composed of a crushed portion and a relatively short cylindrical portion, so that the position and direction can be adjusted to be automatically rotated and welded to the drawing pipe 201, the pointing portion lower roller 243 and the pointing portion It is formed so that the pointing portion 202 can be welded in alignment with the end and the drawing pipe 201 while fixing the non-crushed cylindrical portion of the pointing portion 202 to rotate between the upper rollers 244.

롤러가 하부롤러가 돌아가면서 인발파이프 및 포인팅부가 자동으로 1회에 의해 단번에 용접이 되기 때문에 인발파이프와 포인팅부는 직선상으로 조절될 수 있도록 형성된 것이다.The drawing pipe and the pointing portion are formed so that the drawing pipe and the pointing portion can be adjusted in a straight line because the drawing pipe and the pointing portion are automatically welded at one time as the lower roller rotates.

포인팅부는 찌그러진 부분이 있기 때문에 인발파이프와 별도의 포인팅부 하부롤러(243)에 높낮이를 조절하면서 포인팅부 상부롤러(244)를 하강시켜 고정하도록 형성한 것이다.Since the pointing portion has a crushed portion, it is formed to lower and fix the pointing portion upper roller 244 while adjusting the height of the drawing pipe and the separate pointing portion lower roller 243.

도 3의 용접토치(231)에서 알 수 있듯이, 포인트부(202) 직경이 인발파이프(201) 직경보다 작은 경우는 용접토치(231)의 조절부재(230)는 인발파이프(201) 쪽이 아니라 포인팅부(202) 쪽에 위치하여 토치 끝이 용접부로 향하여 용접함으로써 용접 틈새에 충분한 용접물이 유입되도록 한다.As can be seen from the welding torch 231 of FIG. 3, when the diameter of the point portion 202 is smaller than the diameter of the drawing pipe 201, the adjusting member 230 of the welding torch 231 is not the drawing pipe 201 side. It is located on the pointing portion 202 so that the end of the torch is welded toward the welding portion so that sufficient welding material is introduced into the welding gap.

도 3은 일 실시예로서 인발부 단면을 보여준 것으로, 포인팅부(170)를 물어서 당기면 다이스(130)와 플러그(150) 사이로 파이프(201)가 통과하면서 인발되는 것이다.FIG. 3 shows a cross-section of a drawing part as an embodiment, and when the pointing part 170 is biteed and pulled, the pipe 201 passes through the die 130 and the plug 150 and is drawn.

도 4는 최초 인발 시 포인팅부(170)의 꺾임부(205)에서 폭 1-2cm의 공인발구간이 형성되는 것을 나타낸 것으로, 공인발은 인발 초기 내경을 인발하는 플러그는 제 위치에 체결되는데 0.5초 정도의 시간이 소요되는데 이 시간동안 파이프 내경은 플러그의 유동상태로 인하여 인발되지 못하고 파이프 외경만 인발되는데 이것을 공인발이라고 한다.Figure 4 shows that when the first drawing, a certified foot section of width 1-2 cm is formed at the bent portion 205 of the pointing part 170, the plug for drawing the initial inner diameter of the drawing is fastened in place 0.5 It takes about a second, but during this time, the inner diameter of the pipe cannot be drawn out due to the flow state of the plug, but only the outer diameter of the pipe is drawn out.

도 5는 인발 시 파이프의 공인발구간(A)과 종래 파이프와 포인팅부를 용접한 용접선위치 B를 보여주고 있다.Fig. 5 shows the welded position B where the pipe is certified and the authorized section (A) of the pipe and the conventional pipe and pointing part are welded during drawing.

본 발명은 폐기되는 포인팅부에서 꺾임부(205)로부터 1.5cm 이하의 지점에서 절단시키고 파이프와 용접하여 결합하는 것이다.The present invention is to cut at a point of 1.5 cm or less from the bent portion 205 in the pointing portion to be discarded and weld it to the pipe to join.

종래에는 공인발구간(A)을 벗어난 위치에 용접이 되었기 때문에 인발과정에서 다이스와 플러그에 의해 용접부분을은 엄청난 힘으로 압착됨으로써 응력이 남아있는 용접부분은 찢어지는 등의 파손이 일어났던 것이다. Conventionally, since welding was performed at a position outside the authorized foot section (A), the welding part was squeezed with a great force by a die and a plug during the drawing process, and the welding part, which remained under stress, was damaged such as tearing.

이와 같은 종래 문제점을 해결하기 위하여 본 발명은 포인팅부의 꺾임부에서 공인발이 일어나는 파이프 길이만 남기고, 바람직하게는 1.5cm이하만 남기고 절단한 다음 인발용 파이프와 용접하며, 용접선이 공인발구간(A)에 존재하기 때문에 외경만 인발되고 내경은 인발되지 않기 때문에 그만큼 용접선에 걸리는 압착력이 완화되게 됨으로써 용접부분의 파손이 방지되는 것이다.In order to solve this conventional problem, the present invention cuts only the length of the pipe where the official foot occurs at the bent portion of the pointing part, preferably cuts less than 1.5 cm, and then welds it with the pipe for drawing, and the welding line is the official foot section (A). Since it is present, only the outer diameter is drawn, and the inner diameter is not drawn, so that the pressure on the welding line is relieved so that damage to the welding portion is prevented.

본 발명은 실험을 통하여 파손방지율이 99%이상이 되는 것을 확인하였으며, 이로서 용접선은 공인발구간에 형성함으로써 종래 폐기되는 포인팅부를 재활용하는 기술에서 용접선에서 파손되는 문제점을 완전히 해소할 수 있게 된 것이다.The present invention has been confirmed through experiments that the breakage prevention rate is 99% or more, and as a result, the welding line is formed in an authorized foot section, thereby completely solving the problem of being damaged in the welding line in the technique of recycling the previously discarded pointing part. .

본 발명의 구성은 상기 실시예에 한정되는 것은 아니며, 통상 기술범주에서 실시될 수 있는 다양한 실시예를 포함하는 것이다.The configuration of the present invention is not limited to the above embodiments, and includes various embodiments that can be generally implemented in the technical category.

100:프레임 110:베이스 120:베어링 130:다이스 150:플러그 160:관통구멍 170:포인팅부 201:파이프 202:포인팅부 203:에어구멍 205:꺾임부 230:조절부재 231:용접토치 하부롤러 242:인발파이프 상부롤러 243:포인팅부 하부롤러 244:포인팅부 상부롤러 251,252:대차 253,254:조절롤러 261:레일 290:공급대차
A:공인발구간 B:종래용접부분분100: frame 110: base 120: bearing 130: die 150: plug 160: through hole 170: pointing portion 201: pipe 202: pointing portion 203: air hole 205: bent portion 230: adjusting member 231: welding torch lower roller 242: Pulling pipe Upper roller 243: Pointing portion Lower roller 244: Pointing portion Upper roller 251,252: Bogie 253,254: Adjusting roller 261: Rail 290: Feeding bogie
A: Authorized foot section B: Conventional welding part

Claims (2)

포인팅부(202)의 꺽임부(205)에서 공인발이 일어나는 파이프 길이만큼만 남기고 절단하여 용접할 포인팅부를 준비하는 단계;

레일(261)을 따라 움직이는 대차(251,252)에 형성되어 높이 조절되는 조절롤러(253,254) 위에 인발파이프(201)을 위치시키는 단계;

대차(251,252)를 이동시켜 인발파이프(201) 끝부분을 인발파이프 하부롤러(241) 위에 올리고, 포인팅부(202)를 포인팅부 하부롤러(243)에 올려 포인팅부(202) 끝과 인발파이프(201) 끝을 맞춘 다음, 인발파이프 상부롤러(242)와 포인팅부 상부롤러(244)를 내려서 인발파이프(201) 및 포인팅부(202)의 상부를 눌러주는 자동회전용접을 위해 인발파이프(201) 및 포인팅부(202)를 정위치 시키는 단계;

CO2용접토치의 방향 및 위치를 조절한 다음 인발파이프(201) 및 포인팅부(202)가 1회전하면서 용접하되 용접선이 공인발구간(A)에 위치되도록 용접하는 단계;

플라즈마 토치에 의해 용접된 포인팅부(202)에 에어구멍을 형성하는 단계;를 포함하는 것을 특징으로 하는 공인발구간에 용접선이 형성된 포인팅부 형성방법.
Preparing a pointing part to be welded by cutting and leaving only the length of the pipe in which the official foot occurs at the bending part 205 of the pointing part 202;

Positioning the drawing pipe 201 on the adjustment rollers (253,254) is formed on the bogie (251,252) moving along the rail 261 is adjusted to the height;

Moving the carts 251 and 252 to raise the end of the drawing pipe 201 onto the drawing pipe lower roller 241, put the pointing portion 202 on the pointing portion lower roller 243 and the pointing portion 202 end and drawing pipe ( 201) After aligning the ends, the drawing pipe upper roller 242 and the pointing portion upper roller 244 are lowered to press the upper portion of the drawing pipe 201 and the pointing portion 202, and the drawing pipe 201 for automatic rotation welding And positioning the pointing unit 202 in place.

Adjusting the direction and position of the CO 2 welding torch and then welding while the drawing pipe 201 and the pointing portion 202 are rotated by one rotation, but welding such that the welding line is located in the official footing section A;

And forming an air hole in the pointing portion (202) welded by the plasma torch. A method of forming a pointing portion in which a welding line is formed in an authorized foot section.
청구항 1에 있어서 꺽임부(205)에서 공인발이 일어나는 파이프 길이만큼만 남기고 절단하는 길이는 1.5cm이하인 것을 특징으로 하는 공인발구간에 용접선이 형성된 포인팅부 형성방법.The method according to claim 1, wherein the length of the cut in the bent portion 205 is equal to or less than the length of the pipe where the official foot occurs, and the cutting length is 1.5 cm or less.
KR1020200045138A 2020-04-14 2020-04-14 Formation method of pointing weld line KR102132579B1 (en)

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