KR100333082B1 - Welding method of laminated electrical steel sheet - Google Patents
Welding method of laminated electrical steel sheet Download PDFInfo
- Publication number
- KR100333082B1 KR100333082B1 KR1019980057573A KR19980057573A KR100333082B1 KR 100333082 B1 KR100333082 B1 KR 100333082B1 KR 1019980057573 A KR1019980057573 A KR 1019980057573A KR 19980057573 A KR19980057573 A KR 19980057573A KR 100333082 B1 KR100333082 B1 KR 100333082B1
- Authority
- KR
- South Korea
- Prior art keywords
- welding
- steel sheet
- electrical steel
- laminated electrical
- laminated
- Prior art date
Links
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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
본 발명은 소형변압기의 코아로 사용되는 박판의 전기강판을 적층한 상태에서 용접할 때 용융액이 침투되는 용입깊이를 깊게하여 사용중 박리현상과 결함을 방지할 수 있게한 적층된 전기강판의 용접방법에 관한 것으로,The present invention provides a method of welding a laminated electrical steel sheet which can prevent the peeling phenomenon and defects during use by deepening the penetration depth in which the molten liquid penetrates when welding the laminated electrical steel sheets used as cores of a small transformer. About
즉, 안정기의 코아로 사용되는 전기강판을 적층시켜 티그용접을 함에 있어서, 준비된 강판의 용접부에 약 100암페어의 전류를 인가하되 용접속도를 10mm/sec를 유지되게 하고, 용접시에 아-크길이를 0.5mm로 하며, 약 600kg의 압력하에서 불활성가스인 Ar의 유량을 15ℓ/min의 조건을 기본으로 하여 이에 500∼1000ppm의 산소를 혼합시켜 용접함에 따라, 용접부의 용입깊이를 종래에 비해 두배 이상 높아지게 함으로써 전기강판의 코아에 대한 무결함을 보장받을 수 있음과 아울러 사용수명을 연장할 수 있게 된 것이다.In other words, in laminating electric steel sheets used as cores of ballasts, in applying a current of about 100 amps to the welded steel sheet, the welding speed is maintained at 10 mm / sec, and the arc length is used during welding. Is 0.5mm and the flow rate of Ar is an inert gas based on the condition of 15L / min under the pressure of about 600kg. As a result, the integrity of the core of the electrical steel sheet can be guaranteed and the service life can be extended.
Description
본 발명은 적층된 전기강판의 용접방법, 보다 상세하게는 소형변압기의 코아로 사용되는 박판의 전기강판을 적층한 상태에서 용접할 때 용융액이 침투되는 용입깊이를 깊게하여 사용중 박리현상과 결함을 방지할 수 있게한 적층된 전기강판의 용접방법에 관한 것이다.The present invention is to prevent the peeling phenomenon and defects during use by deepening the penetration depth of the molten liquid when welding in the laminated state of the electrical steel sheet welding method, more specifically, the thin steel sheet used as the core of the small transformer It relates to a method for welding laminated electrical steel sheet made possible.
일반적으로, 소형변압기에 사용되는 코아(도 1참조)는 동일형상으로 된 여러장의 전기강판(1)을 적층하여 용접(TW)하였으나 일반적인 티-그(Tig)용접으로는 도 2에서와 같이 그 용입 깊이(d)가 매우 얕아서 사용중 적층되어 있는 전기강판이 박리되는 현상이 발생되었고, 이에 따라서 변압기로서 사용중 소음이나 기능저하 등 많은 결함을 유발하게 되는 문제점이 있었다.In general, cores used in a small transformer (see FIG. 1) are welded (TW) by stacking a plurality of electrical steel sheets 1 having the same shape, but as a typical TIG welding, as shown in FIG. Since the penetration depth (d) was very shallow, the phenomenon that the electrical steel sheets stacked during use were peeled off occurred, and accordingly, there was a problem that caused many defects such as noise or deterioration during use as a transformer.
본 발명은 위와 같은 종래의 전기강판을 적층하여 용접할 때 발생되는 문제점을 감안하여 안출한 것으로, 그 목적은 적층된 각 전기강판의 용입깊이를 향상시켜 체결력을 향상시킬 수 있는 적층된 전기강판의 용접방법을 제공하는 것이다.The present invention has been made in view of the problems caused when the conventional electrical steel sheet is laminated and welded, the object of the laminated electrical steel sheet can improve the fastening force by improving the penetration depth of each laminated electrical steel sheet It is to provide a welding method.
이러한 목적을 달성하기 위한 본 발명은 안정기의 코아로 사용되는 전기강판을 적층시켜 티그용접을 함에 있어서, 준비된 강판의 용접부에 약 100암페어의 전류를 인가하되 용접속도를 10mm/sec를 유지되게 하고, 용접시에 아-크길이를 0.5mm로 하며, 약 600kg의 압력하에서 불활성가스인 Ar의 유량을 15ℓ/min의 조건을 기본으로 하여 이에 500∼1000ppm의 산소를 혼합시켜 용접함에 따라, 용접부의 용입깊이를 종래에 비해 두배 이상 높아지게 함으로써 전기강판의 코아에 대한 무결함을 보장받을 수 있음과 아울러 사용수명을 연장할 수 있게 됨을 특징으로 한다.In order to achieve the above object, the present invention stacks electrical steel sheets used as cores of a ballast, and performs a TIG welding, while applying a current of about 100 amps to a welded portion of the prepared steel plate to maintain a welding speed of 10 mm / sec. Ark length is 0.5mm at the time of welding, and welding is performed by mixing 500 ~ 1000ppm of oxygen with Ar flow which is inert gas under the condition of 15L / min under pressure of about 600kg. By increasing the depth more than twice as compared to the prior art it is possible to ensure the integrity of the core of the electrical steel sheet and characterized in that it is possible to extend the service life.
도 1은 일반적인 소형변압기의 코아에 대한 일예를 나타낸 사시도,1 is a perspective view showing an example of a core of a general small transformer,
도 2는 종래의 전기강판을 적층용접할 때 나타나는 용입의 형태에 대한 단면도,Figure 2 is a cross-sectional view of the shape of the welding appearing when welding the conventional electrical steel sheet;
도 3은 본 발명의 불활성가스에 포함되어 있는 산소양에 따른 용입 비율의 변화를 나타낸 선도,3 is a diagram showing a change in penetration ratio according to the amount of oxygen contained in the inert gas of the present invention,
도 4는 본 발명의 실시에의 불활성가스에 산소가 혼합된 상태에서 용접한 후 그 용입 형태를 보여주는 단면도이다.Figure 4 is a cross-sectional view showing a form of penetration after welding in the state in which oxygen is mixed with the inert gas in the embodiment of the present invention.
< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>
10 : 전기강판10: electric steel sheet
이하, 본 발명의 적층된 전기강판의 용접방법을 첨부도면을 참조하여 설명하면 다음과 같다.Hereinafter, the welding method of the laminated electrical steel sheet of the present invention will be described with reference to the accompanying drawings.
도 3은 본 발명의 불활성가스에 포함되어 있는 산소양에 따른 용입 비율의 변화를 나타낸 선도이고, 도 4는 본 발명의 실시에의 불활성가스에 산소가 혼합된 상태에서 용접하였을 때 그 용입 형태를 보여주는 단면도로서, 안정기의 코아로 사용되는 전기강판을 적층시켜 티그용접을 함에 있어서, 전기강판(10)의 용접부에 약 100암페어의 전류를 인가하되 용접속도를 10mm/sec를 유지되게 한다.Figure 3 is a diagram showing the change in the penetration ratio according to the amount of oxygen contained in the inert gas of the present invention, Figure 4 is a view of the penetration form when the welded in the state in which oxygen is mixed with the inert gas in the practice of the present invention As a cross-sectional view, the electrical steel sheet used as the core of the ballast is laminated in the TIG welding, and a current of about 100 amp is applied to the welding portion of the electrical steel sheet 10 to maintain a welding speed of 10 mm / sec.
용접시에 아-크길이를 0.5mm로 하고, 약 600kg의 압력으로 불활성가스인 Ar의 유량을 15ℓ/min의 조건을 기본으로 하여 이에 500∼1000ppm의 산소를 혼합시켜 용접한다.At the time of welding, the arc length is 0.5 mm and the flow rate of Ar, which is an inert gas, is mixed at 500 L to 1000 ppm based on a condition of 15 L / min at a pressure of about 600 kg.
즉, 적층된 전기강판의 티-그용접을 위한 최적조건은 다음 표와 같으며, 그때 나타나는 용입은 용접단면의 폭(W)에 대한 깊이(d)의 비율(d/W)로 표시한다.That is, the optimum conditions for the T-g welding of the laminated electrical steel sheet are as shown in the following table, and the incidences shown at this time are expressed as the ratio (d / W) of the depth (d) to the width (W) of the weld section.
한편, 종래의 티그 용접에서의 용입 비율은 0.13으로 측정되었으며, 이때 도 1은 종래의 용접단면을 나타낸 것으로, 여기에서 용입 비율은 일반적인 티-그용접에서 나타나는 범위(0.1∼0.25)로 매우 얕은 것이 보통이다.On the other hand, the penetration ratio in the conventional TIG welding was measured as 0.13, where Figure 1 shows a conventional welding cross-section, where the penetration ratio is very shallow in the range (0.1 ~ 0.25) appearing in a typical T-TG welding. is average.
도 3은 티-그용접을 위한 불활성가스인 Ar에 미량의 산소를 혼합하였을 경우의 용입 비율 변화를 나타낸 것으로 산소가 없을 때는 용입비율이 0.13정도이었으나, 산소를 500ppm혼합시켰을 때 용입 비율이 0.48로 상승하였으며, 1000ppm에서는 약간 감소하는 경향을 보여주고 있다.Figure 3 shows the change in penetration ratio when a small amount of oxygen is mixed with Ar, an inert gas for tee welding, and the penetration ratio was about 0.13 when there was no oxygen, but the penetration ratio was 0.48 when 500 ppm of oxygen was mixed. It increased, and it showed a tendency to decrease slightly at 1000 ppm.
2000ppm을 혼합하였을때는 산소를 혼합하지 않은 경우와 비슷한 0.15정도로 나타났다.When 2000ppm was mixed, it was about 0.15 similar to that without oxygen mixing.
상기 결과로부터 도 4의 용입과 같은 모양을 볼 수 있었으며, 그 용입 비율은 0.48정도 이므로 이러한 방법을 사용하기 전의 용입 비율 0.13에 비하여 약 260%상승한 효과를 얻을 수가 있었다.From the above results, the same shape as the penetration in FIG. 4 was observed, and the penetration ratio was about 0.48. Thus, an increase of about 260% was obtained compared to the penetration ratio 0.13 before using this method.
이와 같은 본 발명은 박판의 전기강판을 티그용접할 때 적정량의 산소를 혼합하고 용접모제에 전류를 인가하면서 용접속도와 압력 및 아크길이 등을 조절함에 따라, 적층된 전기강판에 침투되는 용융액의 용입깊이를 깊게하여 사용중 박리현상과 결함을 방지하고 이에 의해 변압기로 사용도중 소음을 방지할 수 있는 효과가 있다.As described above, the present invention adjusts the welding speed, pressure, arc length, etc. while mixing an appropriate amount of oxygen and applying a current to the welding mother during the TIG welding of the thin steel sheet, thereby injecting molten liquid into the laminated electrical steel sheet. By deepening the depth to prevent peeling phenomenon and defects in use, thereby the noise can be prevented during use as a transformer.
또한 본 발명에 의해 형성된 용접부는 그 용입깊이가 종래에 비해 두배이상 높아지게 됨으로써 전기강판의 코아에 대한 무결함을 보장받을 수 있음과 아울러 사용수명을 연장할 수 있는 등의 장점도 있다.In addition, the welded portion formed by the present invention has the advantage that the penetration depth is more than twice higher than the prior art can ensure the integrity of the core of the electrical steel sheet as well as to extend the service life.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980057573A KR100333082B1 (en) | 1998-12-23 | 1998-12-23 | Welding method of laminated electrical steel sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980057573A KR100333082B1 (en) | 1998-12-23 | 1998-12-23 | Welding method of laminated electrical steel sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000041634A KR20000041634A (en) | 2000-07-15 |
KR100333082B1 true KR100333082B1 (en) | 2002-06-20 |
Family
ID=19564876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980057573A KR100333082B1 (en) | 1998-12-23 | 1998-12-23 | Welding method of laminated electrical steel sheet |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100333082B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101677317B1 (en) | 2013-07-03 | 2016-11-17 | 주식회사 포스코 | Method for manufacturing electrical steel sheet laminated core for reducing core loss and increasing strength and laminated core produced by the same |
-
1998
- 1998-12-23 KR KR1019980057573A patent/KR100333082B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20000041634A (en) | 2000-07-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7718915B2 (en) | Shielding gases for MAG-welding of galvanized steel sheets and welding method using the same | |
DE50015994D1 (en) | Nt | |
US7896979B2 (en) | Activating flux for welding stainless steels | |
JP5472244B2 (en) | Narrow groove butt welding method for thick steel plates | |
EP1920872A1 (en) | Shielding gas for hybrid welding and welding method using such gas | |
JPS5788972A (en) | Two electrode arc welding method | |
CN1318183C (en) | Shielding gas mixture for mig brazing | |
KR100333082B1 (en) | Welding method of laminated electrical steel sheet | |
JP2007301623A (en) | High speed gas shielded arc welding method for horizontal lap joint of steel sheet | |
JPH09164484A (en) | Method and gas mixture for arc welding of aluminum part | |
EP0680802B1 (en) | Protection gaseous mixture and process for arc welding of stainless steel workpieces | |
EP2786829A1 (en) | Submerged arc welding method for steel sheets | |
EP2636477B1 (en) | Tandem gas-shielded arc welding method | |
EP4265371A1 (en) | Gas shield arc welding method, welding joint, and method for producing welding joint | |
JP5236337B2 (en) | Solid wire for pulse MAG welding of thin steel sheet | |
JP2002144081A (en) | Steel wire for mag welding and mag welding method using the same | |
JP2005169414A (en) | Steel wire for carbon dioxide gas-shielded arc welding, and welding method using the same | |
SE518732C2 (en) | Stainless steel flux core thread | |
JPH0339797B2 (en) | ||
JP2001353592A (en) | Steel wire for co2 gas shielded arc welding | |
KR100501984B1 (en) | Steel wire for mag welding in dc-electrode and mag welding method using the same | |
KR100321653B1 (en) | Pulse mag welding steel wire and method of production thereof | |
JPS60174276A (en) | Narrow groove mig arc welding method | |
JPH09155550A (en) | End crack preventing method in high speed one side submerged arc welding | |
JPH1058143A (en) | Large heat input, two-electrode submerged arc welding method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20120404 Year of fee payment: 11 |
|
FPAY | Annual fee payment |
Payment date: 20130403 Year of fee payment: 12 |
|
LAPS | Lapse due to unpaid annual fee |