JPH0825090A - One side welding backing material - Google Patents
One side welding backing materialInfo
- Publication number
- JPH0825090A JPH0825090A JP16435994A JP16435994A JPH0825090A JP H0825090 A JPH0825090 A JP H0825090A JP 16435994 A JP16435994 A JP 16435994A JP 16435994 A JP16435994 A JP 16435994A JP H0825090 A JPH0825090 A JP H0825090A
- Authority
- JP
- Japan
- Prior art keywords
- backing material
- tile
- steel
- solid
- shaped
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水平部材と垂直部材が
複合された鋼材の水平、垂直部材の交差部に適用する片
面溶接用裏当材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backing material for single-sided welding, which is applied to an intersection of horizontal and vertical members of a steel material composed of a horizontal member and a vertical member.
【０００２】[0002]
【従来の技術】一般に造船、橋梁、建築分野では溶接に
よって構造物を造るに際し、省力化および溶接品質安定
のために片面溶接方法が多く採用されている。この片面
溶接には、裏波ビ−ドを形成させるために、裏当材が使
用されているが、簡易片面溶接用裏当材としてタイル形
状の固形裏当材が多用されている。この簡易片面溶接用
裏当材は、全体として長手方向に可橈性を有することか
ら、曲面状の被溶接面であっても適応できる利点があ
る。従来、この種の裏当材としては、実公昭６３−３７
６０号公報あるいは実公昭６４−３５９３号公報で開示
されたもの等があるが、いずれも開先全体に曲がりを有
して曲率が大きい箇所に適用するものである。2. Description of the Related Art Generally, in the fields of shipbuilding, bridges, and construction, a single-sided welding method is often used to save labor and stabilize welding quality when constructing a structure by welding. In this one-sided welding, a backing material is used to form a back bead, but a tile-shaped solid backing material is often used as a backing material for simple one-sided welding. Since this simple backing material for single-sided welding has flexibility in the longitudinal direction as a whole, it has an advantage that it can be applied even to a curved surface to be welded. Conventionally, this type of backing material has been used as a material for the Japanese utility model Sho 63-37
There are those disclosed in Japanese Patent No. 60 or Japanese Utility Model Publication No. 64-3593, both of which are applied to a place where the entire groove has a bend and a large curvature.
【０００３】[0003]
【発明が解決しようとする課題】これらの裏当材は、水
平部材と垂直部材が複合された、いわゆるＴ型、Ｌ型鋼
等の水平部材と垂直部材の交差部のごとき折曲部の開先
箇所に適用すると、図８（ａ），（ｂ）に示すように鋼
材５とタイル状固形裏当材２との間の隙間６、あるいは
タイル状固形裏当材２の間に隙間７が生じて溶接時に湯
もれをしたり裏波ビ−ドが出過ぎて外観が不良になると
いう問題がある。本発明は、水平部材と垂直部材とから
なる複合された鋼材の交差部の開先に、容易に取付可能
とし、溶接時に湯もれやビ−ド外観不良がない、簡便な
片面溶接用裏当材を提供することを目的とする。SUMMARY OF THE INVENTION These backing materials have a groove at a bent portion such as an intersection of a horizontal member and a vertical member such as so-called T-shaped or L-shaped steel in which a horizontal member and a vertical member are combined. When applied to a place, a gap 6 is formed between the steel material 5 and the tile-shaped solid backing material 2, or a gap 7 is generated between the tile-shaped solid backing material 2 as shown in FIGS. However, there is a problem that the appearance may be poor due to leakage of hot water during welding and excessive back beading. INDUSTRIAL APPLICABILITY The present invention is a simple one-sided welding backing that can be easily attached to the groove at the intersection of the composite steel material composed of the horizontal member and the vertical member, and has no leak of water or defective appearance of the bead during welding. The purpose is to provide this material.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明が要旨とするところは、タイル状固形材からな
る片面溶接用裏当材において、水平部材と垂直部材が複
合された鋼材の、水平部材と垂直部材の交差部の内面お
よび外面ともに適合し当接可能となるように、タイル状
固形裏当材をほぼ直角に曲げて連続一体としたＬ型形状
に成形してなることを特徴とする片面溶接用裏当材であ
り、また、不等辺不等厚山形鋼用のＬ型タイル状固形裏
当材であって、この固形裏当材の曲り部外側は該不等辺
不等厚山形鋼の内面円弧半径とほぼ同一形状とし、該固
形裏当材の曲り部内側はほぼ直角形状としてなることを
特徴とする片面溶接用裏当材である。さらに、Ｌ型タイ
ル状固形裏当材の曲り部内側および外側の一方または双
方には切り欠きを設けておいてもよい。In order to achieve the above object, the gist of the present invention is to provide a steel material in which a horizontal member and a vertical member are compounded in a single-sided welding backing material made of tile-shaped solid material. The tile-shaped solid backing material is bent substantially at a right angle to be formed into a continuous integral L-shape so that the inner surface and the outer surface of the intersection of the horizontal member and the vertical member can be fitted and contacted. A characteristic one-sided welding backing material, and an L-shaped tile-shaped solid backing material for unequal-height unequal-thickness angle steel, and the outside of the bent portion of the solid backing material is the unequal-sided unequal material. This is a backing material for one-sided welding, which has a shape substantially the same as the arc radius of the thick angle steel and the inside of the bent portion of the solid backing material has a substantially right-angled shape. Further, a notch may be provided on one or both of the inside and the outside of the bent portion of the L-shaped solid backing material.
【０００５】[0005]
【作用】図１（ａ），（ｂ）は本発明の片面溶接用裏当
材の側面図、図２は図１（ａ）の斜視図を示す。図にお
いて、１は、ほぼ直角に曲る曲り部２を有する連続一体
のＬ型タイル状固形裏当材であって、図４に示すように
Ｌ型各辺の先端部は偏平なタイル状固形裏当材３が当接
できる構造となっている。また、図３に図１（ａ）のＡ
−Ａ断面を示すが、Ｌ型タイル状固形裏当材１は外側お
よび内側共に使用できるようにスラグ受け用の凹部（ス
ラグポケット）４を設けている。なお、スラグポケット
４は、幅６〜１５mm，深さ０．５〜１．５mmであること
が裏ビ−ドの外観上好ましい。1 (a) and 1 (b) are side views of the backing material for single-sided welding of the present invention, and FIG. 2 is a perspective view of FIG. 1 (a). In the figure, reference numeral 1 is a solid L-shaped solid backing material that is continuously integrated and has a bent portion 2 that bends at a substantially right angle. As shown in FIG. 4, the tip of each L-shaped side is a flat tile-shaped solid material. The backing material 3 can come into contact with the backing material 3. In addition, in FIG. 3A of FIG.
As shown in the -A cross section, the L-shaped tile-shaped solid backing material 1 is provided with a recess (slag pocket) 4 for receiving a slag so that it can be used both outside and inside. The slag pocket 4 preferably has a width of 6 to 15 mm and a depth of 0.5 to 1.5 mm in terms of the appearance of the back bead.
【０００６】このような形状のＬ型タイル状固形裏当材
１を、水平部材と垂直部材からなる鋼材６の交差部の開
先に取り付けた状態を図６および図７に示す。図に示す
鋼材（不等辺不等厚山形鋼）６は、内面が円弧状、外面
がほぼ直角の形状の例である。図６は、鋼材６の内面
に、Ｌ型タイル状固形裏当材１の曲り部２の外側に設け
た円弧状部分を取り付けた例、図７は、鋼材６の外面
に、Ｌ型タイル状固形裏当材１の曲り部２内側に設けた
直角部を取り付けた例を示す。Ｌ型タイル状固形裏当材
１の端部に伸びる水平部および垂直部の端面には、これ
に当接して偏平なタイル状固形裏当材３が、溶接長全線
に取り付けてある。FIGS. 6 and 7 show a state in which the L-shaped tile-shaped solid backing material 1 having such a shape is attached to the groove at the intersection of the steel material 6 composed of the horizontal member and the vertical member. The steel material (unequal thickness non-equal thick angle steel) 6 shown in the figure is an example in which the inner surface is arcuate and the outer surface is substantially right angle. FIG. 6 shows an example in which an arc-shaped portion provided outside the bent portion 2 of the L-shaped solid backing material 1 is attached to the inner surface of the steel material 6, and FIG. 7 shows an L-shaped tile shape on the outer surface of the steel material 6. An example in which a right-angled portion provided inside the bent portion 2 of the solid backing material 1 is attached is shown. On the end faces of the horizontal portion and the vertical portion extending to the end portion of the L-shaped tile-shaped solid backing material 1, a flat tile-shaped solid backing material 3 that is in contact with the flat portion is attached to the entire welding length line.
【０００７】このような構成とすることにより、水平部
材と垂直部材からなる鋼材６の交差部の開先とタイル状
固形裏当材（１，３）およびタイル状固形裏当材（１，
２）の間に隙間が生じることなく密着して、溶接時に湯
もれやビ−ド外観不良がない。また、図６では垂直部材
の立向溶接から水平部材の下向溶接へと連続して、図７
では水平部材の下向溶接から垂直部材の立向溶接へと連
続して溶接することが可能である。With this structure, the groove at the intersection of the steel members 6 composed of the horizontal member and the vertical member, the tile-shaped solid backing material (1, 3) and the tile-shaped solid backing material (1, 3)
There is no gap between 2) and they are in close contact with each other, and there is no leakage of water or poor appearance of beads during welding. Moreover, in FIG. 6, the vertical welding of the vertical member is continuously performed to the downward welding of the horizontal member, and
With, it is possible to continuously weld from downward welding of horizontal members to vertical welding of vertical members.
【０００８】さらに、水平部材と垂直部材からなる鋼材
６の交差部が直角でない場合、あるいは不等辺不等厚山
形鋼の内面円弧半径とＬ型タイル状固形裏当材１の外側
半径とが異なった場合、図５に示すようにＬ型タイル状
固形裏当材１曲り部２の内側および外側の一方または双
方に切り欠き５を付け、該切り欠き５を切断分離し、そ
れぞれを開先部形状に適宜合わせて取り付けることによ
り、開先部とＬ型タイル状固形裏当材１との間に隙間が
生じることがないので湯もれやビ−ド外観不良が生じる
ことがない。Further, when the crossing portion of the steel material 6 composed of the horizontal member and the vertical member is not a right angle, or the inner surface arc radius of the unequal thickness unequal thick angle steel is different from the outer radius of the L-shaped solid backing material 1. In this case, as shown in FIG. 5, a notch 5 is provided on one or both of the inside and outside of the L-shaped solid backing material 1 bent portion 2, and the notch 5 is cut and separated. Since the gap is not formed between the groove portion and the L-shaped tile-shaped solid backing material 1 by appropriately fitting the shape, no hot water leak or defective bead appearance occurs.
【０００９】なお、Ｌ型タイル状固形裏当材成分は、Ｓ
ｉＯ2 −ＭｇＯ−Ａｌ2 Ｏ3 系のコ−ジラたはＳｉＯ2
を主成分とするもので良く、Ｌ型タイル状固形裏当材の
鋼材開先部の取り付けは、一般のタイル状固形裏当材同
様、ガス抜き用穴を有する可橈性耐熱テ−プのアルミ箔
あるいはスズ箔を用いる。また、開先面とタイル状固形
裏当材との間に、鋼材への密着性および裏ビ−ドを良好
とすることを目的としてガラス繊維シ−トを添装する場
合があるが、本発明においても適用可能である。The L-shaped tile solid backing material component is S
iO 2 -MgO-Al 2 O 3 -based cordiera or SiO 2
The main component of the L type tile-shaped solid backing material can be attached to the steel groove portion like the general tiled solid backing material by using a flexible heat-resistant tape having a vent hole. Use aluminum foil or tin foil. In addition, a glass fiber sheet may be added between the groove surface and the tile-like solid backing material for the purpose of improving the adhesion to the steel material and the back bead. It is also applicable in the invention.
【００１０】[0010]
【実施例】図１（ａ）に示す形状のＬ型タイル状固形裏
当材を各種試作した。試作したＬ型タイル状固形裏当材
は、コ−ジライトで曲り部外側半径ｒ1 での弧を除いた
一辺の長さ２５mm，厚さ１３mm，スラグポケット幅１２
mm，深さ１．２mmの寸法とした。鋼材は、図９に示す各
種サイズの不等辺不等厚山形鋼を用いた。開先形状は図
１０に示すが、開先角度θ2 は４５°，ギャップｇは５
mmに一定とした。EXAMPLES Various L-shaped tile solid backing materials having the shape shown in FIG. The prototype L-shaped solid backing material was cordierite and had a side length of 25 mm, a thickness of 13 mm, and a slug pocket width of 12 excluding the arc at the outer radius r1 of the bent portion.
mm and depth 1.2 mm. As the steel material, unequal thickness unequal thick angle steel shown in FIG. 9 was used. The groove shape is shown in FIG. 10, but the groove angle θ2 is 45 ° and the gap g is 5
It was fixed to mm.
【００１１】表１に各種Ｌ型タイル状固形裏当材と鋼材
との組合せを示す。なお、Ｌ型タイル状固形裏当材の端
部は偏平なタイル状固形裏当材を当接すると共に、これ
を順次連設して溶接長全線にアルミ箔で貼付して取り付
けた。Table 1 shows combinations of various L-shaped tile solid backing materials and steel materials. In addition, the flat tile-shaped solid backing material was brought into contact with the end portion of the L-shaped tile-shaped solid backing material, and the tile-shaped solid backing material was successively attached and attached to the entire welding length wire by attaching an aluminum foil.
【００１２】溶接はＪＩＳ Ｚ３３１３ ＹＦＷ−Ｃ５
０ＤＲのフラックス入りワイヤ（ワイヤ径１．４mm）
で、溶接条件は電流１８０〜２２０Ａ，電圧２３〜２４
Ｖ，シ−ルドガスは炭酸ガス２５リットル／分として、
図６に示すように鋼材の内面に裏当材を取り付けた場合
は立向〜下向溶接へと、また図７に示すように鋼材の外
面に裏当材を取り付けた場合は下向〜立向溶接へと連続
して溶接した。溶接中に湯もれの有無と溶接終了後裏当
材を取り除いて裏ビ−ドの外観を調べた。それらの結果
を表１にまとめて示す。Welding is performed according to JIS Z3313 YFW-C5.
0DR flux-cored wire (wire diameter 1.4 mm)
The welding conditions are current 180-220A, voltage 23-24.
V, shield gas is carbon dioxide gas 25 liters / minute,
When the backing material is attached to the inner surface of the steel material as shown in FIG. 6, the vertical to downward welding is performed, and when the backing material is attached to the outer surface of the steel material as shown in FIG. Welded continuously to direction welding. The appearance of the back bead was examined by removing the leakage of water during welding and removing the backing material after the completion of welding. The results are summarized in Table 1.
【００１３】[0013]
【表１】 [Table 1]
【００１４】表中、No．１〜４が本発明例で、No．５，
６は比較例である。本発明例であるNo．１は、鋼材の内
面円弧半径ｒ2 とＬ型タイル状固形裏当材外側の半径ｒ
1 とが同一であるので、裏当材が鋼材に密着して湯もれ
がなく、裏ビ−ド外観も良好であった。No．２は、鋼材
外面にＬ型タイル状固形裏当材内側の直角部を取り付け
たものであるが、鋼材θ1 が９０°であるので、裏当材
が鋼材に密着して湯もれがなく、裏ビ−ド外観も良好で
あった。In the table, No. Nos. 1 to 4 are examples of the present invention. 5,
6 is a comparative example. No. which is an example of the present invention. 1 is the radius r2 of the inner circular arc of the steel and the outer radius r of the L-shaped tile solid backing material
Since 1 was the same, the backing material was in close contact with the steel material and there was no leakage of water, and the appearance of the back bead was also good. No. No. 2 is the one in which the right-angled part inside the L-shaped tile solid backing material is attached to the outer surface of the steel material, but since the steel material θ1 is 90 °, the backing material adheres to the steel material and there is no leakage of water. The back bead appearance was also good.
【００１５】No．３は、鋼材の内面円弧半径ｒ2 とＬ型
タイル状固形裏当材外側の半径ｒ1 とが異なるが、Ｌ型
タイル状固形裏当材の切り欠き部を折って取り付けてあ
るので、裏当材が鋼材に密着して湯もれがなく、裏ビ−
ド外観も良好であった。No．４は、鋼材θ1 が９３°で
あるが、Ｌ型タイル状固形裏当材の切り欠き部を折って
取り付けてあるので、裏当材が鋼材に密着して湯もれが
なく、裏ビ−ド外観も良好であった。No. No. 3 is different in the inner surface circular arc radius r2 of the steel material and the outer radius r1 of the L-shaped tile solid backing material, but since the notch part of the L-shaped tile solid backing material is folded and attached, the backing material Adheres to the steel material and there is no leakage of water.
The appearance was also good. No. In No. 4, the steel material θ1 is 93 °, but since the notch portion of the L-shaped solid backing material is folded and attached, the backing material adheres to the steel material and there is no leakage of water. The appearance was also good.
【００１６】比較例中No．５は、鋼材内面の円弧部に偏
平タイル状固形裏当材を取り付けたので、鋼材とタイル
状固形裏当材およびタイル状固形裏当材間に隙間が生じ
て、溶接時に湯もれが生じて裏ビ−ドも不良であった。
No．６は、鋼材外面に偏平タイル状固形裏当材を取り付
けたので、鋼材交差部に隙間が生じて、溶接後に裏ビ−
ド外観が不良であった。No. in the comparative example. In No. 5, since the flat tile-shaped solid backing material was attached to the arc portion on the inner surface of the steel material, a gap was created between the steel material and the tile-shaped solid backing material and the tile-shaped solid backing material, and leakage of water occurred during welding The back bead was also bad.
No. In No. 6, since the flat tile-shaped solid backing material was attached to the outer surface of the steel material, a gap was created at the steel material intersection, and the back beer was welded after welding.
The appearance was poor.
【００１７】[0017]
【発明の効果】以上詳述したように本発明の片面溶接用
裏当材によれば、水平部材と垂直部材とからなる複合さ
れた鋼材の交差部の開先に、容易に取り付け可能で、密
着性も良好であるから溶接時に湯もれがなく優れた裏ビ
−ドが得られる。As described in detail above, according to the backing material for single-sided welding of the present invention, it can be easily attached to the groove of the crossing of the composite steel material composed of the horizontal member and the vertical member, Since the adhesion is also good, there is no leakage of water during welding and an excellent back bead can be obtained.
【図１】（ａ），（ｂ）は本発明の裏当材の例を示す側
面図である。1A and 1B are side views showing examples of a backing material of the present invention.
【図２】本発明の裏当材の例を示す斜視図である。FIG. 2 is a perspective view showing an example of a backing material of the present invention.
【図３】図１のＡ−Ａ断面を示す。FIG. 3 shows a cross section taken along the line AA of FIG.
【図４】本発明の裏当材に偏平なタイル状固形裏当材を
当接した例を示す側面図である。FIG. 4 is a side view showing an example in which a flat tile-shaped solid backing material is brought into contact with the backing material of the present invention.
【図５】本発明の裏当材の折曲部に切り欠きを付けた例
を示す側面図である。FIG. 5 is a side view showing an example in which a bent portion of the backing material of the present invention is provided with a notch.
【図６】本発明の裏当材を鋼材の内面に取り付けた状態
を示す側面図である。FIG. 6 is a side view showing a state where the backing material of the present invention is attached to the inner surface of a steel material.
【図７】本発明の裏当材を鋼材の外面に取り付けた状態
を示す側面図である。FIG. 7 is a side view showing a state where the backing material of the present invention is attached to the outer surface of the steel material.
【図８】（ａ），（ｂ）従来の裏当材の使用状況を示す
側面図である。8 (a) and 8 (b) are side views showing a usage state of a conventional backing material.
【図９】本発明の実施例に使用した不等辺不等厚山形鋼
のを示す側面図である。FIG. 9 is a side view showing an unequal-height unequal thick angle section steel used in an example of the present invention.
【図１０】本発明の実施例に使用した開先形状を示す断
面図である。FIG. 10 is a cross-sectional view showing a groove shape used in an example of the present invention.
１ Ｌ型タイル状固形裏当材 ２ 曲り部 ３ 偏平タイル状固形裏当材 ４ スラグポケット ５ 切り欠き ６ 鋼材 ７ 鋼材とタイル状固形裏当材間の隙間 ８ タイル状固形裏当材間の隙間 ９ 可橈性耐熱テ−プ 1 L-shaped solid tile backing material 2 Bent section 3 Flat tile solid backing material 4 Slag pocket 5 Notch 6 Steel material 7 Gap between steel material and solid tile backing material 8 Gap between solid tile backing material 9 Flexible heat resistant tape
───────────────────────────────────────────────────── フロントページの続き (72)発明者 上山 尚昭 北海道函館市弁天町20番３号 函館どつく 株式会社函館造船所内 (72)発明者 三和 勇 北海道函館市弁天町20番３号 函館どつく 株式会社函館造船所内 (72)発明者 吉江 久弥 北海道函館市弁天町20番３号 函館どつく 株式会社函館造船所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoaki Ueyama 20-3 Bentencho, Hakodate City, Hokkaido Hakodate Dotsu Co., Ltd. Hakodate Shipyard Co., Ltd. (72) Inventor Isa Sanwa 20-3 Bentencho, Hakodate City Hakodate Tsuku Co., Ltd. Hakodate Shipyard (72) Inventor Hisaya Yoshie 20-3 Bentencho, Hakodate City, Hokkaido Hakodate Dotsu Co., Ltd. Hakodate Shipyard
Claims (3)
材において、水平部材と垂直部材が複合された鋼材の、
水平部材と垂直部材の交差部の内面および外面ともに適
合し当接可能となるように、タイル状固形裏当材をほぼ
直角に曲げて連続一体としたＬ型形状に成形してなるこ
とを特徴とする片面溶接用裏当材。1. A backing material for one-sided welding, which is made of a tile-shaped solid material, of a steel material composed of a horizontal member and a vertical member,
Characterized by bending the tile-shaped solid backing material at a substantially right angle to form a continuous integral L-shape so that the inner surface and the outer surface of the intersection of the horizontal member and the vertical member can be fitted and contacted. A backing material for single-sided welding.
形裏当材であって、この固形裏当材の曲り部外側は該不
等辺不等厚山形鋼の内面円弧半径とほぼ同一形状とし、
該固形裏当材の曲り部内側はほぼ直角形状としてなるこ
とを特徴とする請求項１記載の片面溶接用裏当材。2. An L-shaped tile-like solid backing material for unequal-equal-thickness angle steel, wherein the outside of the bent portion of the solid-backing material is substantially equal to the inner surface arc radius of the unequal-equal-thickness angle steel. Have the same shape,
The backing material for one-sided welding according to claim 1, wherein the inside of the bent portion of the solid backing material has a substantially right-angled shape.
よび外側の一方または双方に切り欠きを有することを特
徴とする請求項１または請求項２記載の片面溶接用裏当
材。3. The backing material for one-sided welding according to claim 1 or 2, wherein the L-shaped tile-shaped solid backing material has a notch on one or both of the inside and outside of the bent portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16435994A JP2760950B2 (en) | 1994-07-15 | 1994-07-15 | Backing material for single side welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16435994A JP2760950B2 (en) | 1994-07-15 | 1994-07-15 | Backing material for single side welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0825090A true JPH0825090A (en) | 1996-01-30 |
| JP2760950B2 JP2760950B2 (en) | 1998-06-04 |
Family
ID=15791655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16435994A Expired - Fee Related JP2760950B2 (en) | 1994-07-15 | 1994-07-15 | Backing material for single side welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2760950B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100720173B1 (en) * | 2005-11-09 | 2007-05-18 | 정무수 | Backing Materials for Welding Joints at Bucket and Arm of Excavator |
| CN112589371A (en) * | 2019-10-01 | 2021-04-02 | 株式会社神户制钢所 | Sliding copper backing plate for welding and welding method |
-
1994
- 1994-07-15 JP JP16435994A patent/JP2760950B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100720173B1 (en) * | 2005-11-09 | 2007-05-18 | 정무수 | Backing Materials for Welding Joints at Bucket and Arm of Excavator |
| CN112589371A (en) * | 2019-10-01 | 2021-04-02 | 株式会社神户制钢所 | Sliding copper backing plate for welding and welding method |
| CN112589371B (en) * | 2019-10-01 | 2023-03-14 | 株式会社神户制钢所 | Sliding copper backing plate for welding and welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2760950B2 (en) | 1998-06-04 |
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