KR200164051Y1 - Backing flux tile for welding works - Google Patents
Backing flux tile for welding works Download PDFInfo
- Publication number
- KR200164051Y1 KR200164051Y1 KR2019990013443U KR19990013443U KR200164051Y1 KR 200164051 Y1 KR200164051 Y1 KR 200164051Y1 KR 2019990013443 U KR2019990013443 U KR 2019990013443U KR 19990013443 U KR19990013443 U KR 19990013443U KR 200164051 Y1 KR200164051 Y1 KR 200164051Y1
- Authority
- KR
- South Korea
- Prior art keywords
- welding
- flux
- bead
- support
- base material
- Prior art date
Links
- 238000003466 welding Methods 0.000 title claims abstract description 90
- 230000004907 flux Effects 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 18
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 12
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 239000011324 bead Substances 0.000 abstract description 33
- 239000000203 mixture Substances 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 6
- 239000010953 base metal Substances 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 18
- 239000002893 slag Substances 0.000 description 16
- 239000000395 magnesium oxide Substances 0.000 description 10
- 239000000155 melt Substances 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000002994 raw material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010433 feldspar Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- -1 chamotte Chemical compound 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 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
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/361—Alumina or aluminates
-
- 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
Abstract
본 고안은 편면 용접시 모재의 이면에 백-비드가 형성되게 모재의 이면에 부착하는 용접지지구에 관한 것으로서, 플럭스들이 용접 와이어를 이용하여 버티컬-업(vertical-up;수직 상향) 자세로 용접할 때, 모재 사이의 개선(開先)을 통해 용융 플럭스가 흘러 넘치는 것을 방지할 수 있고, 또한 고전압·고전류로 용접할 때 발생되는 스패터의 백-비드 부착을 억제시킬 수 있는 용접지지구에 관한 것이다.The present invention relates to a welding support that is attached to the back surface of the base material so that the back-bead is formed on the back surface of the base material during single side welding, and the flux is welded in a vertical-up (vertical upward) posture using a welding wire. It is possible to prevent the flow of the molten flux through the improvement between the base metals and to prevent the back-bead attachment of the spatter generated when welding at high voltage and high current. It is about.
상기의 목적을 달성하기 위해 제공되는 본 고안의 용접지지구는, 받침 플럭스(2)의 융점이 1500∼1850℃(바람직하게는 1600∼1850℃)가 되도록, 상기 받침 플럭스의 조성을 Al2O3: 38∼75 중량%, SiO2: 20∼48 중량%, MgO : 10 중량% 이하, 기타 불순물(Fe2O3, CaO, Na2O, K2O)로 한 것을 특징으로 한다.Such that the welding support clause sockets 1500~1850 ℃ (preferably 1600~1850 ℃) melting point of the flux (2) of the subject innovation, which is provided to achieve the above object, the composition of the supporting flux Al 2 O 3: 38 to 75% by weight, SiO 2 : 20 to 48% by weight, MgO: 10% by weight or less, and other impurities (Fe 2 O 3 , CaO, Na 2 O, K 2 O).
Description
본 고안은, 선박의 선각(HULL) 등을 구성하기 위해, 여러 장의 강판을 편면 용접할 때, 모재의 이면에 백-비드(back bead)가 형성되도록 상기 모재의 이면에 부착하는 용접지지구에 관한 것으로서, 더욱 구체적으로는, 플럭스들이 용접 와이어(flux cored wire electrode)를 이용하여 버티컬-업(vertical-up;수직 상향) 자세로 용접할 때, 상호 대향시켜 둔 모재 사이의 개선(開先)을 통해 용융 플럭스가 흘러 넘치는 것을 방지하고, 고전압·고전류로 용접할 때 발생되는 스패터의 백-비드 부착을 억제시킨 용접지지구에 관한 것이다.The present invention, in order to form a hull (HULL) of the ship, when welding a plurality of sheets of steel sheet, on the back side of the base material so that the back bead (back bead) is formed on the welding support for attaching to the base material More specifically, when fluxes are welded in a vertical-up position using a flux cored wire electrode, the improvement between the mutually opposing base materials The present invention relates to a welding support which prevents the flow of molten flux through and suppresses back-bead adhesion of spatters generated when welding at high voltage and high current.
첨부도면중 도1은, 편면 용접시 사용하는 용접지지구의 사시도이다.1 is a perspective view of a welding support used for single side welding.
상기의 도면을 통해 알 수 있듯이, 편면 용접용의 용접지지구는, 양측 상면이 이형지(4)로 보호되고 있는 알루미늄 재질의 접착테이프(5) 위에, 상면 중앙에 오목한 홈 형상으로 슬래그 포켓(6)을 요설한 블록 형태의 받침 플럭스(2)가 일렬로 배열되어 구성된다.As can be seen from the above drawings, the welding support for single-sided welding has a slag pocket 6 in the shape of a groove concave in the center of the upper surface, on an adhesive tape 5 made of aluminum whose upper surface is protected by a release paper 4 on both sides. The support flux 2 of the block form which summarized this is arrange | positioned in a line, and is comprised.
상기 구성의 용접지지구는, 도2에 도시된 형태처럼 사용된다.The welding support of the above configuration is used as the form shown in FIG.
즉, 받침 플럭스(2) 상에 형성되어 있는 오목한 홈 형상의 슬래그 포켓(6)을 따라, 'V'자 형태의 개선이 나타나도록 일 측면이 경사지게 가공된 모재(1)를 배치한 후, 상기 개선(開先)부위에 용접을 실시하는 형태로 사용된다.That is, along the concave groove-shaped slag pocket 6 formed on the support flux 2, after placing the base material 1 inclined at one side such that the improvement of the 'V' shape is shown, It is used in the form of welding to an improvement part.
이와 같이 하면, 용융시킨 용접 와이어의 용융 플럭스가 모재 이면측으로 흘러 내리고, 모재의 이면측으로 흘러 내린 용융 플럭스는 받침 플럭스(2)의 상면에 형성된 슬래그 포켓(6)을 따라, 모재(1)의 이면에 백-비드(3)를 형성하게 된다.In this case, the molten flux of the molten welding wire flows down to the back side of the base material, and the molten flux flowed down to the back side of the base material along the slag pocket 6 formed on the top surface of the backing flux 2, and thus the back surface of the base material 1. To form a back-bead (3).
이때, 상기의 용접 와이어에서 발생된 용융 플럭스의 열이 받침 플럭스의 표면에 열입(熱入)되어, 상기 받침 플럭스의 표면 일부도 용융된다.At this time, the heat of the molten flux generated by the welding wire is squeezed into the surface of the supporting flux, so that a part of the surface of the supporting flux is also melted.
일반적으로, 용접작업의 진행속도와 용접부의 품질은, 용접자세(아래보기 용접, 수평 용접, 버티컬-업 용접)와 사용하는 용접기구의 품질 및 작업자의 기량에 따라 심한 차이가 생기게 되는데, 특히 용접작업에서 사용하는 용접기구의 품질은 용접부의 강도나 외관성, 작업속도 등에 가장 큰 영향을 미친다.In general, the speed of welding and the quality of the welding part are severely affected by the welding posture (bottom welding, horizontal welding, vertical-up welding) and the quality of the welding apparatus used and the skill of the operator. The quality of the welding apparatus used in the work has the greatest influence on the strength, appearance, and working speed of the weld.
이에 본 출원인은, 용접기구 중에서 편면 용접시 사용하는 용접지지구의 품질을 개선하여 작업 안전성을 향상하고, 미진하나마 용접산업분야의 발전에 이바지 하고자 본 고안을 안출하게 되었다.Accordingly, the present inventors have devised the present invention to improve the work safety by improving the quality of the welding support used in single side welding among welding apparatuses, and to contribute to the development of the welding industry.
특히, 본 출원인이 국내의 기술동향을 조사하면서 알게 된 사실은, 용접지지구의 경우에, 일본에서 약 10여년 전에 개발된 제품(일본 특허공보 소63-6318호)이 아직도 원형 그대로 사용되고 있으며, 이 제품에 대해서 용접 작업자가 많은 불편을 느끼고 있다는 것이었다.Particularly, the present applicant has learned from researching domestic technology trends. In the case of a welding support, a product developed in Japan about 10 years ago (Japanese Patent Publication No. 63-6318) is still used as it is. The welding workers felt a lot of inconvenience about the product.
이것과 관련하여 좀 더 상세히 설명하면, 일본 특허공보에 기재된 특허기술은, 플럭스의 융점이 1350℃∼1500℃로 가장 낮은 영역에 있도록, SiO2-Al2O3-MgO계 고형(固形) 플럭스의 조성을 SiO2: 45∼70중량%, Al2O3: 15∼40중량%, MgO: 5∼30중량%의 범위로 하고, 또한 SiO2, Al2O3및 MgO의 합계도 90중량% 이상으로 하며, 겉보기기공율(見掛氣孔率)은 5∼40%가 되도록 제조하여서, 이 플럭스가 내화재의 역할과 비드 형성층의 역할을 동시에 수행할 수 있게 한 것을 특징으로 하고 있다.In more detail in this regard, the patented technology described in the Japanese Patent Publication discloses a SiO 2 -Al 2 O 3 -MgO-based solid flux so that the melting point of the flux is in the lowest region of 1350 ° C to 1500 ° C. of the composition SiO 2: 45~70% by weight, Al 2 O 3: 15~40 wt%, MgO: in the range of 5 to 30% by weight, and further 90% by weight, also the sum of SiO 2, Al 2 O 3 and MgO The apparent porosity is made to be 5 to 40%, so that the flux can simultaneously perform the role of the refractory material and the role of the bead forming layer.
그러나, 상기 조성의 용접지지구(특히, 받침 플럭스)는, 그 당시 사용되고 있던 φ0.9∼1.2㎜의 플럭스들이 용접 와이어에 21V-190A의 에너지를 가하는 경우에 알맞도록 구성된 것이어서, 최근 사용되고 있는 φ1.4㎜이상의 용접 와이어에 동일한 조건을 적용하는 경우, 충분한 용융 플럭스를 얻을 수 없어 용접속도가 느리다는 단점이 있었다.However, the welding support (particularly, the supporting flux) of the above composition is configured to be suitable for the case where the fluxes of φ0.9 to 1.2 mm used at the time apply the energy of 21V-190A to the welding wire. When the same conditions were applied to the welding wire of .4 mm or more, sufficient melt flux could not be obtained, resulting in a low welding speed.
반면, φ1.4㎜이상의 용접 와이어를 충분히 용융시킬 수 있을 만큼의 고전류와 고전압(25V∼28V)을 인가하는 경우, 용접속도는 거의 2배로 향상하지만, 용접 와이어와 개선(開先) 사이에서 발생된 스패터(불똥의 튀김)가 용융 플럭스 속에 잠긴 상태로 응고되어 용접 결함을 야기하는 단점이 있었고, 용접자세에 따라서는, 예를 들어 버티컬-업 자세로 편면 용접을 하는 경우에는, 용융 플럭스가 개선 밖으로 흘러 넘쳐서 안전사고를 일으키는 문제가 있었다.On the other hand, when a high current and a high voltage (25V to 28V) applied enough to melt a welding wire of φ1.4 mm or more are applied, the welding speed is almost doubled, but it occurs between the welding wire and the improvement. There was a disadvantage that the spatters (sprays of sparks) solidified in the melt flux caused welding defects, and depending on the welding posture, for example, in the case of single-sided welding in a vertical-up position, the melt flux was There was a problem that spilled out of the improvement and caused a safety accident.
뿐만 아니라, 이러한 코젤라이트계(또는 코디어라이트계)의 플럭스를 사용하는 경우, 고전류·고전압하에서, 받침 플럭스가 필요 이상으로 용융되어 백-비드가 과대해지는 문제가 있고, 동시에 상술한 버티컬-업 자세에서의 용접시, 슬래그와 함께 스패터가 백-비드에 많이 달라붙어, 추후 그라인더로 연마작업을 해야 하는 문제가 있었다.In addition, in the case of using such cogellite-based (or cordierite-based) flux, under high current and high voltage, there is a problem in that the supporting flux melts more than necessary and the back-bead becomes excessive, and at the same time, the vertical-up described above When welding in a posture, the spatter together with the slag stuck to the back-bead a lot, there was a problem that the grinder to be polished later.
게다가, 상기의 받침 플럭스가 고열에 의해서 쉽게 녹기 때문에, 예를 들면 3㎜ 높이로, 백-비드의 높이를 균일하게 형성하기 어렵다는 단점이 있었다.In addition, since the support flux is easily melted by high heat, there is a disadvantage that it is difficult to uniformly form the height of the back-bead, for example, at a height of 3 mm.
이에, 실제의 작업현장에서는, 가혹한 작업조건에서도 사용할 수 있는 새로운 용접지지구의 요구가 비등해지고 있다.Therefore, the demand for a new welding support that can be used even in the harsh working conditions is boiling.
본 고안은 전술한 종래 용접지지구의 제반 문제점과, 작업자의 요구사항 등을 고려하여 안출된 것으로서, 편면 용접작업을 어떠한 자세(예를 들면, 아래보기, 버티컬-업, 수평)로 실시하든지 고효율로 실시할 수 있으며, 모재 이면에 균일한 높이와 품질로서 백-비드를 형성할 수 있게 한 용접지지구를 제공함에 그 목적이 있다.The present invention has been devised in consideration of the above-mentioned problems of the conventional welding support and the requirements of the operator, and it is highly efficient to perform one side welding work in any posture (for example, below, vertical-up, horizontal). It is an object of the present invention to provide a welded support that can be implemented and to form a back-bead with a uniform height and quality on the back of the base material.
도1은 용접지지구의 사시도,1 is a perspective view of a welding support;
도2는 용접지지구가 사용되는 편면 용접시의 작업상태를 도시한 설명도.2 is an explanatory view showing a working state during single side welding in which a welding support is used.
〔도면 부호의 설명〕[Description of Drawing Reference]
1...모재(모판), 2...받침 플럭스(타일),1 ... base material (base plate), 2 ... support flux (tile),
3...백-비드, 4...이형지,3 ... back-bead, 4 ... release paper,
5...접착테이프, 6...슬래그 포켓.5 ... adhesive tapes, 6 ... slag pockets.
이하, 본 고안에 따른 용접지지구의 구성 및 작용에 대해 상세히 설명한다.Hereinafter, the configuration and operation of the welding support according to the present invention will be described in detail.
본 고안의 용접지지구는, 양측면이 이형지(4)로 덮여 있고 중앙은 그대로 노출되어 있는 접착테이프(5)상에, 오목한 홈 형태의 슬래그 포켓(6)이 상면 중앙에 요설된 받침 플럭스(2)를 배설하여 구성되는 용접지지구에 있어서,The welding support of the present invention has a supporting flux (2) in which a concave groove-shaped slag pocket (6) is concave in the center of an upper surface on an adhesive tape (5) on which both sides are covered with a release paper (4) and the center is exposed as it is. In the welding support is configured to excrete,
상기 받침 플럭스(2)의 융점이 1500∼1850℃가 되도록,In order that melting | fusing point of the said support flux 2 may be 1500-1850 degreeC,
Al2O3: 38∼75 중량%,Al 2 O 3 : 38-75 wt%,
SiO2: 20∼48 중량%,SiO 2 : 20-48 wt%
MgO : 10 중량% 이하,MgO: 10 wt% or less,
기타 불순물(Fe2O3, CaO, Na2O, K2O)Other impurities (Fe 2 O 3 , CaO, Na 2 O, K 2 O)
로 조성한 것을 특징으로 한다.It is characterized by the composition.
이하에서는, 각 조성물의 역할과 상·하한값의 의미에 관해서 설명한다.Below, the role of each composition and the meaning of an upper limit and a lower limit are demonstrated.
Al2O3: 38∼75 중량%Al 2 O 3 : 38-75 wt%
중성물질로서, 받침 플럭스의 용융점을 높이는 역할과 함께, 백-비드를 균일하게 형성시키는 역할을 한다.As a neutral material, in addition to increasing the melting point of the support flux, serves to uniformly form the back-bead.
한편, Al2O3의 양이 38% 미만이 되면, 플럭스의 용융성이 나빠지게 되어 용접성이 하락한다.On the other hand, when the amount of Al 2 O 3 is less than 38%, the meltability of the flux worsens and the weldability decreases.
반면, Al2O3의 양이 75% 이상이 되면, 용접성은 향상하나 재료비용이 증가하는 비경제적인 문제가 있다.On the other hand, when the amount of Al 2 O 3 is 75% or more, there is an uneconomic problem that improves weldability but increases material cost.
상기 Al2O3의 원료로는, 알루미나와 카오린, 샤모트, 뮬라이트, 납석, 장석, 홍수석, 보오크사이트 등이 있다.Examples of the Al 2 O 3 raw material include alumina, kaolin, chamotte, mullite, feldspar, feldspar, floodstone, and bauxite.
SiO2: 20∼48 중량%SiO 2 : 20-48 wt%
산성물질로서, 백-비드의 표면을 매끄럽게 하는 작용이 있다.As an acidic substance, it has a function of smoothing the surface of the back-bead.
그러나, SiO2가 20% 미만이 되면 내화도가 너무 높아져서, 용융 플럭스의 양이 적어지고, 슬래그 형성이 원활하게 이루어지지 않게 된다.However, when SiO 2 is less than 20%, the fire resistance becomes too high, so that the amount of melt flux is small, and slag formation is not smoothly performed.
반면, SiO2의 함유량이 48% 이상이 되면 용융 플럭스가 과다해지고, 이로 인해 스패터와 슬래그가 용융 플럭스에 잠긴 상태로 응고될 가능성이 높아져 용접부위에 결함이 생긴다는 문제가 있다.On the other hand, when the content of SiO 2 is 48% or more, the melt flux becomes excessive, which increases the possibility that the spatter and slag solidify in the state immersed in the melt flux, resulting in a defect in the welded portion.
상기 SiO2의 원료로는, 규석, 규사, 도석, 석영, 탈크 등이 있다.Examples of the raw material of SiO 2 include silica, silica, pottery stone, quartz, talc and the like.
MgO : 10 중량% 이하MgO: 10 wt% or less
용융 플럭스의 양과 백-비드의 균일성에 영향을 주며, 사용 전류량에 따라서 그 비율을 임의로 정할 수 있다.It affects the amount of melt flux and the uniformity of back-beads, and the ratio can be arbitrarily determined according to the amount of current used.
그러나, MgO의 양을 10% 이상으로 하면 스패터가 백-비드에 더 많이 달라붙게 되는 문제가 생긴다.However, if the amount of MgO is more than 10%, there is a problem that the spatter is more stuck to the back-bead.
상기 MgO의 원료로는, 활석과 마그네시아, 마그네사이트 등이 있다.As a raw material of the MgO, talc, magnesia, magnesite and the like.
이하, 실시예를 통해 본 고안의 작용을 설명한다.Hereinafter, the operation of the present invention through the examples.
상기 표 1에 제시된 조성으로, 26㎜ ×25㎜ ×1000㎜ 규격의 플럭스를 제작하고, 이것을 80㎜ ×1020㎜ 규격의 접착테이프에 부착하여 용접지지구를 만든 다음, 아래와 같은 용접조건하에서 버티컬-업 자세로 용접을 실시한 결과, 표 2와 같은 결과를 얻었다.With the composition shown in Table 1, a flux of 26 mm x 25 mm x 1000 mm size was made, and it was attached to an adhesive tape of 80 mm x 1020 mm size to make a welding support, and then under the following welding conditions: As a result of welding in the up position, the results shown in Table 2 were obtained.
(용접조건)(Welding condition)
㈎ 플럭스들이 용접 와이어 : φ1.4㎜들이 Flux-welded welding wire: φ1.4 mm
㈏ 용접전류 : 190∼250A㈏ Welding current: 190 ~ 250A
㈐ 용접전압 : 22∼28V㈐ Welding voltage: 22 ~ 28V
㈑ 와이어 노출길이 : 22㎜노출 Wire exposed length: 22㎜
㈒ 시일드 가스 : CO2가스, 15ℓ/min가스 Shield gas: CO 2 gas, 15ℓ / min
㈓ 용접자세 : 버티컬-업 자세㈓ Welding position: Vertical-up position
㈔ 용접시편(모재) : 350㎜ ×500㎜ ×19㎜(t)㈔ Welding specimen (base material): 350㎜ × 500㎜ × 19㎜ (t)
㈕ 개선 각(ANGLE) : 양면합 40°㈕ ANGLE: 40 ° on both sides
㈖ 루트 갭, 페이스 : 6∼7㎜, 1㎜이하㈖ Root gap, face: 6-7㎜, 1㎜ or less
㈗ 용접기 : H사, 500A㈗ Welding machine: H company, 500A
상기의 표 1과 표 2에서 보듯이, 종래의 예에 속하는 실험(5), 실험(6), 실험(7)의 용접지지구는, 버티컬-업 용접자세에서, 스패터와 슬래그가 백-비드에 많이 달라붙었으며, 백-비드의 형상도 파형이고, 특히 백-비드의 높이도 적정 수준인 3㎜를 훨씬 초과하는 것을 알 수 있었다.As shown in Table 1 and Table 2, the welding supports of the experiment (5), the experiment (6), and the experiment (7) belonging to the conventional example, in the vertical-up welding position, spatter and slag back-bead It was found that the shape of the back-bead was also corrugated, and the height of the back-bead also far exceeded the appropriate level of 3 mm.
반면, 본 고안의 조성에 따른 실험(1)∼실험(4)에서는, 스패터와 슬래그가 백-비드에 거의 달라붙지 않았으며, 백-비드의 외관, 모양, 높이도 적정하였다.On the other hand, in experiments (1) to (4) according to the composition of the present invention, spatter and slag hardly adhered to the back-beads, and the appearance, shape, and height of the back-beads were also appropriate.
게다가, 슬래그의 박리성이 탁월하여, 용접능률이 최대화되는 것을 알 수 있었다.In addition, it was found that the peelability of the slag was excellent, and the welding efficiency was maximized.
상술한 본 고안의 작용 및 그에 따른 이점에 관하여 좀 더 설명을 하자면 다음과 같다.The operation and advantages of the present invention described above will be described in more detail as follows.
즉, 종래의 순수한 코젤라이트계 물질(Al2O3-SiO2-MgO)로 만든 용접지지구는, 1.4㎜ 이상의 플럭스들이 용접 와이어에 210A이상의 고전류를 흘려 두께 15㎜ 이상의 강판을 CO2 가스 분위기에서 용접하는 경우, 받침 플럭스의 용융점이 낮아, 용접 와이어에서 유래한 용융 플럭스와 받침 플럭스에서 유래한 용융 플럭스가 합쳐질 경우, 전체적으로 용융 플럭스의 양이 너무 많아지는 경향이 있었다.In other words, the welding support made of conventional pure cogellite-based material (Al 2 O 3 -SiO 2 -MgO) is welded to a steel sheet of 15 mm or more in a CO 2 gas atmosphere by flux of 1.4 mm or more flowing 210 A or more of high current through the welding wire. In this case, the melting point of the support flux was low, and when the melt flux derived from the welding wire and the melt flux derived from the support flux were combined, there was a tendency that the amount of the melt flux was too large as a whole.
이러한 이유로 인해, 버티컬-업 자세로 용접을 실시하게 되면, 개선(開先) 밖으로 용융 플럭스가 넘쳐서 흘러 내리게 된다.For this reason, welding in a vertical-up position causes the melt flux to overflow and flow out of the arc.
또한, 고전압·고전류로 용접할 때 발생되는 스패터가 용융 플럭스에 잠긴 상태로 부유하기 때문에, 용접열이 용융 플럭스에 가해지더라도, 스패터 전부를 녹여주지는 못하여, 슬래그와 함께 백-비드에 덕지덕지 달라붙게 되었다.In addition, since the spatter generated when welding at high voltage and high current is suspended in the molten flux, even if the heat of welding is applied to the molten flux, the entire spatter cannot be melted, and the slag is attached to the back-bead together with the slag. It was clinging.
특히, 슬래그와 스패터가 뒤범벅된 채, 백-비드에 달라붙어서 응고되면, 백-비드의 외관이 매끄럽지 못할 뿐아니라 그 높이도 일정치가 않으므로 그라인더로서 재수정 연마작업을 해주어야 하는 단점이 있게 된다.In particular, when the slag and spatter are stuck together and solidified by sticking to the back-bead, the back-bead may not be smooth and its height is also not constant so that there is a disadvantage in that it should be regrinded as a grinder.
이러한 이유 때문에, 편면 용접에서 용접지지구를 사용하는 취지가 무색하게 되었을 뿐아니라, 오히려 비능률적이라는 문제가 제기되었다.For this reason, not only the purpose of using the welding support in single-sided welding has become colorless, but rather the problem is raised.
그러나, 본 고안의 용접지지구에 의하면, 받침 플럭스의 내화성이 우수하기 때문에, φ1.4㎜이상의 용접 와이어에 고전압을 가하여 용접을 할 경우, 상기 용접 와이어에서 유래한 용융 플럭스가 개선 내에 용접되어 가면서 일정한 두께의 슬래그를 백-비드에 형성시켜 주게 되며, 특히 스패터가 받침 플럭스에 달라붙어 있어도 용접열에 의해 쉽게 녹아버리므로 종래처럼 백-비드에 달라붙는 일이 없다. 이는 용융 플럭스의 양이 적절하여 용접열로서 스패터를 녹이는데 간섭을 받지 않기 때문이다.However, according to the welding support of the present invention, since the support flux is excellent in fire resistance, when welding by applying a high voltage to a welding wire of φ1.4 mm or more, the molten flux derived from the welding wire is welded within an improvement. Slag of a certain thickness is formed on the back-bead, and in particular, even if the spatter is stuck to the supporting flux, it is easily melted by the heat of welding, so that it does not stick to the back-bead as in the prior art. This is because the amount of melt flux is appropriate and does not interfere with melting the spatter as the heat of welding.
이와 같이, 받침 플럭스에 달라붙어 있는 스패터를 고온의 용접열로 즉시 녹여 주면서 용접을 실시하게 됨으로, 깨끗한 백-비드를 얻을 수 있다.In this way, the welding is performed while the sputtered on the support flux is immediately melted by high temperature welding heat, thereby obtaining a clean back-bead.
이상과 같이, 본 고안의 용접지지구는, 플럭스들이 용접 와이어(flux cored wire electrode)를 이용하여 편면 용접을 할 때, 용접자세(예를 들면, 아래보기, 버티컬-업, 수평)에 상관없이, 용접을 고효율로 실시할 수 있으며, 모재 이면에 균일한 높이와 품질로 백-비드를 형성할 수가 있었다.As described above, the welding support of the present invention, regardless of the welding posture (for example, bottom view, vertical-up, horizontal) when the flux is used for single-sided welding using a flux cored wire electrode, Welding can be carried out with high efficiency, and back-beads can be formed with a uniform height and quality on the back of the base material.
특히, 상호 대향시켜 둔 모재 사이의 개선(開先)을 통해 용융 플럭스가 흘러 넘치는 일이 없었으며, 고전압·고전류로 용접을 하더라도 스패터(spatter)가 백-비드에 부착되는 경우가 적었다.In particular, the melt flux did not flow through the mutually opposing base materials, and spatters were less likely to adhere to the back-bead even when welding at high voltage and high current.
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| JPH07276095A (en) * | 1994-04-05 | 1995-10-24 | Nippon Steel Corp | Backing material for one-side welding |
| KR0149272B1 (en) * | 1996-05-22 | 1998-10-15 | 정무수 | Ceramic backing material for co2 arc welding |
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