KR20230041285A - Welding method to which a submerged welding (SAW) X-grove ceramic backing material is applied. - Google Patents
Welding method to which a submerged welding (SAW) X-grove ceramic backing material is applied. Download PDFInfo
- Publication number
- KR20230041285A KR20230041285A KR1020210124709A KR20210124709A KR20230041285A KR 20230041285 A KR20230041285 A KR 20230041285A KR 1020210124709 A KR1020210124709 A KR 1020210124709A KR 20210124709 A KR20210124709 A KR 20210124709A KR 20230041285 A KR20230041285 A KR 20230041285A
- Authority
- KR
- South Korea
- Prior art keywords
- welding
- saw
- backing material
- ceramic backing
- submerged
- Prior art date
Links
- 238000003466 welding Methods 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 title claims abstract description 12
- 239000000919 ceramic Substances 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 22
- 239000011324 bead Substances 0.000 claims abstract description 6
- 230000035515 penetration Effects 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- 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
- B23K9/18—Submerged-arc welding
-
- 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/52—Ceramics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
Description
본 발명은 기존 서브머지드아크용접(SAW) 기법을 적용하여 X-개선 용접시의 1st면의 초증 root부의 불완전 용입 불량으로 2nd면 용접 전에 불완전 용입부를 가우징(gouging) 또는 그라인딩(grinding) 또는 컷팅 툴(cutting tools)등을 이용하여 완전히 제거하고, 2nd면의 용접을 실시해야 함으로써 불완전 용입부 제거 공정이 추가적으로 발생된다.The present invention applies the existing submerged arc welding (SAW) technique to gouging, grinding, or By using cutting tools, etc., to completely remove and welding the 2nd surface, an incomplete penetration removal process is additionally generated.
이러한 추가 공정 손실을 감소시켜 SAW 용접 생산성을 향상시키기 위한 기술 분야이다.It is a technology field to improve SAW welding productivity by reducing such additional process loss.
아크용접 분야에서 일반적으로 모재 기준으로 One-Side 용접기법과 Both-Side 용접기법으로 나눌 수 있다.In the field of arc welding, it can be generally divided into One-Side welding technique and Both-Side welding technique based on the base material.
One-Side 용접기법 중 대표적인 용접기법이 플럭스코어드아크용접(FCAW) 기법이다.Among the one-side welding techniques, the representative welding technique is the flux cored arc welding (FCAW) technique.
One-Side 용접 기법은 모재 이면부에 그림.1 과 같이 세라믹백킹재를 적용하는 기법이다.The one-side welding technique is a technique in which a ceramic backing material is applied to the back side of the base material as shown in Fig.1.
이러한 One-Side 용접 기법을 서브머지드아크용접(SAW) X-개선 Both-Side 용접 기법에 적용하는 기술이다.This one-side welding technique is applied to the Submerged Arc Welding (SAW) X-improvement Both-Side welding technique.
기존의 서브머지드아크용접(SAW) 후판 X-개선 용접시 1st면 초증 용접시 용접 조건 부적절로 입열량이 부족할 경우 root부의 불완전용입 불량이 발생되고, 입열량이 과도할 경우 용락(Burn Through)이 발생되어 불량이 발생 시킨다.Existing submerged arc welding (SAW) thick plate X-improvement welding, 1st side super-increased welding, if the heat input is insufficient due to improper welding conditions, incomplete penetration of the root part occurs, and if the heat input is excessive, burn through This causes a defect to occur.
따라서, 현재 작업 방법의 경우 그림.3과 같이 root부 불완전용입 불량이 발생할 경우 그림.4와 같이 가우징(gouging)또는 그리인딩(grinding)또는 컷팅툴(cutting tools)등을 이용하여 불완전용입 root부를 제거하고 2nd면의 용접을 실시함으로써 서브머지드아크용접 생산성 향상에 영향을 미치고 있으며, 이러한 불완전 용입 root부가 발생되지 않는 서브머지드아크용접(SAW) X-개선 용접 기법을 개발하여 용접 생상성을 향상 시키기 위함이다.Therefore, in the case of the current working method, if incomplete penetration of the root part occurs as shown in Fig. 3, gouging, grinding, or cutting tools are used as shown in Fig. By removing the root part and welding the 2nd surface, it affects the improvement of submerged arc welding productivity, and by developing a submerged arc welding (SAW) X-improvement welding technique that does not generate such an incomplete penetration root part, welding productivity is improved. is to improve
서브머지드아크용접(SAW) 후판 X-개선 root부는 용접시 불완전용입 또는 용락(Burn Through)이 발생된다.Submerged arc welding (SAW) thick plate X-improvement root part causes incomplete penetration or burn through during welding.
따라서,이를 개선하기 위한 용접기법으로 1st면 초층 용접시 완전용입이 가능한 용접 조건(전류, 전압, 속도 등)의 관계에 따른 입열량을 충분히 공급하기 위하여 그림.2와 같이 SAW X-개선용 세라믹백킹재를 발명하여 설치함으로써, 초층 용접 조건 범위를 높게(넓게)할 수 있게 되었으며, 1st 초층 root부의 완전용입을 만들어 낼 수 있다.Therefore, as a welding technique to improve this, in order to sufficiently supply heat input according to the relationship of welding conditions (current, voltage, speed, etc.) that allow complete penetration during the first layer welding of the 1st surface, ceramics for SAW X-improvement as shown in Figure.2 By inventing and installing the backing material, it is possible to increase (widen) the range of welding conditions for the first layer, and to create complete penetration of the root portion of the first layer.
또한, 2nd면의 초층 용접의 건전성을 확보하기 위하여 2nd면의 초증 용접시 아크브릿지효과(arc bridge effect)가 발생되지 않도록 1st면 초층의 백비드 형상은 그림.5 와 같이 적절히 볼록하게 형성되어야 하며, 전극의 끝단면에서 수직거리(a)가 수평거리(b) 보다 짧도록(a<b) 백비드가 형성되어야 한다.In addition, in order to secure the soundness of the first layer welding on the 2nd side, the back bead shape of the first layer on the 1st side should be appropriately convex as shown in Fig. , the back bead should be formed so that the vertical distance (a) is shorter than the horizontal distance (b) at the end face of the electrode (a<b).
서브머지드아크용접(SAW)의 경우 X-개선 형상의 경우 1st면 초층 용접에서 부적절한 용접 조건으로 불완전용입 또는 용락 발생 등의 용접 불량이 발생되고 있으며, 높은 불량률을 가지고 있다.In the case of submerged arc welding (SAW), in the case of X-improvement shape, welding defects such as incomplete welding or melting occur due to improper welding conditions in the 1st surface first layer welding, and have a high defect rate.
이러한 불량을 없애기 위해 root부 제거 공정은 필수적이었다.In order to eliminate these defects, the root part removal process was essential.
그러나, 상기에 개발된 서브머지드아크용접(SAW) X-개선용 세라믹백킹재를 개발 적용함으로써 root 부의 건전한 용접부를 형성할 수 있다.However, by developing and applying the ceramic backing material for submerged arc welding (SAW) X-improvement developed above, it is possible to form a sound welded part of the root part.
이러한, 서브머지드아크용접(SAW) X-개선 용접 기법을 적용함으로써 root부의 불완전용입 제거 공정을 생략할 수 있으며, 용접 생산성 및 생산 리드타임 단축, 용접 품질향상 등에 높은 효과가 있다.By applying this submerged arc welding (SAW) X-improvement welding technique, the process of removing incomplete penetration of the root part can be omitted, and it is highly effective in reducing welding productivity and production lead time and improving welding quality.
상기 표기된 그림을 참조하여 본 고안의 바람직한 실시예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정되어서는 아니 되며, 고안자는 그 자신의 고안을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 고안의 기술적 사상에 부합하는 의미와 개념으로 해석되어 야만 한다. 따라서, 본 명세서에 기재된 실시예와 그림에 도시된 구성은 본 고안의 가장 바람직한 일 실시예에 불과할 뿐이고 본 고안의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형 예들이 있을 수 있음을 이해하여야 한다. 그림.2는 본 고안에 의한 바람직한 실시 예를 표현하였으며, 서브머지드아크용접(SAW) X-개선용 용접지지대(세라믹백킹재)를 그림.2와 같이 발명품을 부착하고 1st면의 초층을 그림.5에 표현된 형상의 백비드가 형성되도록 용접 조건을 설정하고 실시하게 되면, 초증 root부의 용입부족 또는 용락 등의 불량을 감소시킬 수 있다. A preferred embodiment of the present invention will be described in detail with reference to the above-noted drawings. Prior to this, the terms or words used in this specification and claims should not be limited to their usual or dictionary meanings, and the contributor may appropriately define the concept of terms in order to best describe his/her invention. Based on the principle that it can be, it must be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the figures are only one of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, so various alternatives can be made at the time of this application. It should be understood that there may be equivalents and variations. Figure.2 shows a preferred embodiment according to the present invention, and attaches the invention to the submerged arc welding (SAW) X-improvement welding support (ceramic backing material) as shown in Figure.2 and shows the first layer on the 1st side. If the welding conditions are set and performed so that the back bead of the shape expressed in .5 is formed, defects such as insufficient penetration or melting of the super-enlarged root can be reduced.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210124709A KR20230041285A (en) | 2021-09-17 | 2021-09-17 | Welding method to which a submerged welding (SAW) X-grove ceramic backing material is applied. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210124709A KR20230041285A (en) | 2021-09-17 | 2021-09-17 | Welding method to which a submerged welding (SAW) X-grove ceramic backing material is applied. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20230041285A true KR20230041285A (en) | 2023-03-24 |
Family
ID=85872693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020210124709A KR20230041285A (en) | 2021-09-17 | 2021-09-17 | Welding method to which a submerged welding (SAW) X-grove ceramic backing material is applied. |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20230041285A (en) |
-
2021
- 2021-09-17 KR KR1020210124709A patent/KR20230041285A/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5869972B2 (en) | Laser-arc combined welding method | |
| EP2698223A2 (en) | A process of welding to repair thick sections using two arcwelding devices and a laser device; corresponding welding apparatus | |
| JP2010221298A (en) | Complex method of welding in combination of gas shield arc welding with submerged arc welding, and complex welding machine thereof | |
| KR20080081796A (en) | One side welding method of butt-welded joints | |
| CN105458510A (en) | Method for eliminating pores in magnesium alloy welding | |
| CN103317219A (en) | Process of welding without back gouging at I-shaped groove with unequal gaps of medium plate | |
| WO2016047008A1 (en) | Method for laser welding of materials with different thicknesses and welded member having different thicknesses produced by said method | |
| JP2015208771A (en) | Groove shrinkage restraining method of automatic tig back wave welding | |
| CN107570874A (en) | Laser-arc hybrid welding process | |
| JP2007268551A (en) | Multi-electrode one side submerged arc welding method | |
| KR20230041285A (en) | Welding method to which a submerged welding (SAW) X-grove ceramic backing material is applied. | |
| JPS63295061A (en) | Method for preventing welding defect by ultrasonic excitation | |
| JP2010046671A (en) | Welding method of lap joint | |
| CN108714731A (en) | A kind of unclear method for root of submerged-arc welding cut deal | |
| JP7126080B1 (en) | Gas-shielded arc welding method, welded joint, and method for manufacturing the welded joint | |
| JP2012166204A (en) | Water-cooled sliding copper strap for electrogas arc welding | |
| JP2016193444A (en) | Multi-electrode one surface single layer submerged arc welding method | |
| JP2016043391A (en) | Laser arc hybrid welding method | |
| KR101595279B1 (en) | Fgb welding method | |
| JP2012187630A (en) | Bevel shape | |
| JP6607677B2 (en) | Four-electrode single-sided single-layer submerged arc welding method | |
| CN108067733A (en) | Laser electrical arc complex welding method | |
| WO2022196540A1 (en) | Gas shield arc welding method, welding joint, and method for producing welding joint | |
| JP7043485B2 (en) | Welding method and welded joint | |
| JP2015188888A (en) | laser welding method |