JP2691857B2 - Single-sided submerged arc welding method - Google Patents
Single-sided submerged arc welding methodInfo
- Publication number
- JP2691857B2 JP2691857B2 JP33806293A JP33806293A JP2691857B2 JP 2691857 B2 JP2691857 B2 JP 2691857B2 JP 33806293 A JP33806293 A JP 33806293A JP 33806293 A JP33806293 A JP 33806293A JP 2691857 B2 JP2691857 B2 JP 2691857B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- groove
- arc welding
- submerged arc
- steel material
- 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.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鋼材を突き合わせ、一
方からサブマージアーク溶接する片面サブマージアーク
溶接方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-sided submerged arc welding method in which steel materials are butted and one side is subjected to submerged arc welding.
【０００２】[0002]
【従来の技術】片面サブマージアーク溶接方法は従来か
ら、特公昭４８−２２５７２号公報の「片面溶接方法」
に代表されるフラックス銅バッキング法、特公昭４１−
７７６３号公報の「裏当材を使用する鋼の片面突合わせ
溶接法」に代表されるフラックスバッキング法、あるい
は特公昭５７−１７６４０号公報や実公平３−４４６２
号公報の「片面溶接用裏当材」にある簡易片面溶接方法
等があり、造船や橋梁などの板継に使用されている。2. Description of the Related Art A single-sided submerged arc welding method has hitherto been known as "single-sided welding method" disclosed in Japanese Patent Publication No. 48-22572.
Flux copper backing method represented by JP-B-41-
Flux backing method typified by "Steel one-side butt welding method using backing material" in Japanese Patent No. 7763, or Japanese Examined Patent Publication No. Sho 57-17640 and Japanese Utility Model Publication No. 3-4622.
There is a simple one-sided welding method and the like in "Backing material for one-sided welding" of Japanese Patent Publication, which is used for board splicing of ships and bridges.
【０００３】フラックス銅バッキング法およびフラック
スバッキング法は図２（ａ），（ｂ）に示すように、突
き合わされた鋼材１の裏面から銅当金１０に層状に散布
したバッキングフラックス９、または耐火性キャンバス
１２内に収納されたバッキングフラックス９をエアーホ
ース１１等の押上機構により鋼材１の裏面に押圧してお
き、表面よりワイヤ７、フラックス８を用いてサブマー
ジアーク溶接を行い、鋼材１を片側より溶接する方法で
ある。The flux copper backing method and the flux backing method are, as shown in FIGS. 2 (a) and 2 (b), a backing flux 9 spread in layers from the back surface of the abutted steel materials 1 to the copper metal 10, or fire resistance. The backing flux 9 stored in the canvas 12 is pressed against the back surface of the steel material 1 by a lifting mechanism such as an air hose 11, and submerged arc welding is performed using the wire 7 and the flux 8 from the front surface, and the steel material 1 is It is a method of welding.
【０００４】しかし、これらの方法においては大型の裏
当装置を必要とすること、また傾斜状態の継手溶接には
適用できない等の問題がある。前記簡易片面溶接方法
は、図３（ａ），（ｂ）に示すように、突き合わされた
鋼材１の裏面からガラステープと粉末または固形フラッ
クスを熱収縮性フイルムで包んだ裏当材１７をマグネッ
ト１３あるいは拘束用治具１４で固定し、表面よりサブ
マージアーク溶接を行う方法である。この簡易片面サブ
マージアーク溶接方法は大型の装置を必要とせず、また
傾斜溶接においても適用可能であるが、裏当材１７を固
定するマグネット１３あるいは溶接での拘束用治具１４
の取付け、取外し、および取外し後の鋼材１表面の仕上
げ等、多大な労力を要することとなる。However, these methods have problems that a large backing device is required and that they cannot be applied to joint welding in an inclined state. As shown in FIGS. 3 (a) and 3 (b), the simple one-sided welding method uses a magnet for a backing material 17 in which a glass tape and powder or solid flux are wrapped in a heat-shrinkable film from the back surface of the abutted steel materials 1. 13 or a restraining jig 14, and submerged arc welding is performed from the surface. This simple one-sided submerged arc welding method does not require a large apparatus and can be applied to inclined welding, but the magnet 13 for fixing the backing material 17 or the jig 14 for welding restraint is used.
A large amount of labor is required to attach, remove, and finish the surface of the steel material 1 after removal.
【０００５】一方、特公昭６３−７８７６号公報や実公
平２−２２１５９号公報にガスシールドアーク溶接で使
用される裏当材があるが、これは図４に示すように、タ
イル状の固形フラックス５を耐熱テープ１５に連続して
貼り、剥離紙１６を剥がして鋼材１へ接着する構造とな
っている。この裏当材を使用する状態を図５に示すが、
ガスシールドアーク溶接での裏ビードを確保するために
ギャップＧを設ける必要があり、そのため鋼材１の固定
は鋼材１の表面側または裏面側から拘束用治具１４の取
付けが必須で、該拘束用治具１４の取付け、取外し、お
よび取外し後の鋼材１表面の仕上げ等、多大な労力を要
する。On the other hand, there is a backing material used in gas shielded arc welding in Japanese Patent Publication No. 63-7876 and Japanese Utility Model Publication No. 2-22159. This is a solid flux of tile shape as shown in FIG. 5 is continuously adhered to the heat-resistant tape 15, the release paper 16 is peeled off, and it is adhered to the steel material 1. The state of using this backing material is shown in Fig. 5,
It is necessary to provide the gap G in order to secure the back bead in the gas shielded arc welding. Therefore, in order to fix the steel material 1, it is essential to attach the restraining jig 14 from the front surface side or the back surface side of the steel material 1, A great deal of labor is required to attach and remove the jig 14, and finish the surface of the steel material 1 after the removal.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、大型の裏当
装置が不用で、かつ裏当材を固定するマグネットや拘束
用治具を用いることなく、簡便に一方からサブマージア
ーク溶接することができる片面サブマージアーク溶接方
法を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention makes it possible to perform submerged arc welding from one side easily without using a large backing device and without using a magnet or a restraining jig for fixing the backing material. It is an object to provide a single-sided submerged arc welding method that can be performed.
【０００７】[0007]
【課題を解決するための手段】本発明の要旨とするとこ
ろは、鋼材の片面サブマージアーク溶接において、開先
角度３５〜５０°のＶまたはＹ開先の内側を仮付した鋼
材裏面に、鋼材への接着部を有し、上部にガラス繊維シ
ートを添装した固形フラックスを連続して接着し、開先
内に金属粉を開先底部から５〜１５ｍｍの高さに散布
し、初層に直径１．６〜２．４ｍｍの鋼ワイヤを用い
て、溶接入熱量３０〜７０ｋＪ／ｃｍで溶接することを
特徴とする片面サブマージアーク溶接方法にある。SUMMARY OF THE INVENTION The gist of the present invention is that in single-sided submerged arc welding of a steel material, a steel material is temporarily attached to the inside of a V or Y groove with a groove angle of 35 to 50 ° on the back surface of the steel material. Solid flux with a glass fiber sheet attached to the top is continuously bonded, and metal powder is sprayed in the groove at a height of 5 to 15 mm from the groove bottom to form the first layer. A single-sided submerged arc welding method is characterized in that welding is performed with a welding heat input amount of 30 to 70 kJ / cm using a steel wire having a diameter of 1.6 to 2.4 mm.
【０００８】[0008]
【作用】以下に本発明を詳細に説明する。図１に示すよ
うに、ＶまたはＹ開先（図ではＶ開先）の内側を仮付２
した鋼材１の裏面に、鋼材１への接着部３を有し、上部
にガラス繊維シート４を添装した固形フラックス５を連
続して接着し、開先内に金属粉６を散布し、初層を細径
のワイヤ７を用いてサブマージアーク溶接をすることに
より、大型の裏当装置を必要とすることなく、また裏当
材の固定も特別な治具を必要とせず、簡便に一方からサ
ブマージアーク溶接をすることができる。The present invention will be described below in detail. As shown in FIG. 1, the inside of the V or Y groove (V groove in the figure) is temporarily attached 2
The back surface of the steel material 1 that has a bonding section 3 of the steel 1, the upper
The solid flux 5 with the glass fiber sheet 4 attached thereto is continuously adhered, the metal powder 6 is sprinkled in the groove, and the first layer is subjected to submerged arc welding by using the wire 7 having a small diameter, whereby a large size is obtained. No backing device is required, and no special jig is required for fixing the backing material, and submerged arc welding can be easily performed from one side.
【０００９】次に、本発明における各要件の数値限定理
由について説明する。開先角度は３５〜５０°である必
要がある。開先角度が３５°未満の狭い開先であると、
後述する如く本発明の骨子は、直接アークにより開先ル
ート部を溶かさず多量の溶融金属の保有する熱で溶融す
ることにあるので、裏ビードが出ない。また、多層盛溶
接の場合に表側のスラグ剥離性が不良となる。開先角度
が５０°を超えると裏ビードは十分に出て良好である
が、溶融金属から与えられる熱量が過多となり、過剰の
裏波ビードが形成され、極端な場合には湯もれする。ま
た開先断面積が広いので能率が劣る。なお、開先のギャ
ップは５ｍｍ以下、Ｙ開先の場合のルートフエイスは２
ｍｍ以下であることが仮付溶接の容易さおよび裏ビード
が安定して出るので好ましい。ルートフエイスが２ｍｍ
を超えると、溶融金属の保有する熱により裏波ビード形
状が不良となる。Next, the reasons for limiting the numerical values of the requirements of the present invention will be described. The groove angle should be 35 to 50 °. When the groove angle is a narrow groove of less than 35 °,
As will be described later, since the skeleton of the present invention is that the groove root portion is not melted by the direct arc and is melted by the heat held by a large amount of molten metal, the back bead does not appear. Further, in the case of multi-layer welding, the slag removability on the front side becomes poor. When the groove angle exceeds 50 °, the back bead appears sufficiently and is good, but the amount of heat given from the molten metal becomes excessive, excessive back bead is formed, and in an extreme case, the water leaks. In addition, since the groove cross-sectional area is wide, the efficiency is poor. In addition, the gap of the groove is 5 mm or less, and the root face in the case of the Y groove is 2 mm.
It is preferable that the thickness is less than or equal to mm since the tack welding is easy and the back bead is stably produced. Root face is 2mm
If it exceeds, the shape of the backside bead becomes poor due to the heat retained by the molten metal.
【００１０】開先の内側に仮付をすることにより、また
１．６〜２．４ｍｍ径の細径ワイヤを使用することによ
り、上部にガラス繊維シートを添装した固形フラックス
の固定は鋼材裏面へ接着部を接着するだけの弱い支持力
で良く、マグネットや拘束用治具を用いる必要がなくな
る。よって労力の低減が図れる。なお、開先の内側への
仮付は溶接長全線または部分的でも良い。また、仮付の
ビード高さは裏ビードを安定に出すために開先底部から
５ｍｍ以下とすることが好ましい。仮付ビード高さが５
ｍｍを超えると、溶融金属の熱で仮付ビードを溶かすこ
とができず、裏波ビードが形成されない。By temporarily attaching the inside of the groove and by using a thin wire having a diameter of 1.6 to 2.4 mm, the solid flux having the glass fiber sheet attached to the upper portion is fixed to the back surface of the steel material. A weak supporting force for adhering the adhesive portion is sufficient, and it is not necessary to use a magnet or a restraining jig. Therefore, the labor can be reduced. The temporary attachment of the groove to the inside may be the entire welding length line or a partial welding length. Further, the bead height for temporary attachment is preferably 5 mm or less from the groove bottom in order to stably bring out the back bead. Temporary bead height is 5
If it exceeds mm, the temporary bead cannot be melted by the heat of the molten metal, and the back bead is not formed.
【００１１】固形フラックスの上部に添装するガラス繊
維シートは、鋼材１への密着性を良くする。また、溶接
時にスラグとなり裏ビードを被って裏ビードの外観を良
好とするために必須である。固形フラックスの上部にガ
ラス繊維シートを添装しないと、特に鋼材の開先に目ち
がいが生じた場合に密着性が悪くなり湯もれや鋳ばりが
生じる。また、裏ビードを被うスラグ量が少なくなり裏
ビードの外観が不良となる。一般に裏当材は、裏ビード
を安定に出すために固形フラックスにスラグポケットを
設ける場合があるが、本発明においても可能である。ま
た、鋼材裏面への接着部はアルミ箔、亜鉛箔などの金属
箔製の耐熱テープに接着剤を付けたものを用いる。The glass fiber sheet attached to the upper part of the solid flux improves the adhesion to the steel material 1. In addition, it is essential for forming a slag during welding and covering the back bead to improve the appearance of the back bead. If the glass fiber sheet is not added to the upper part of the solid flux , the adhesion will be poor, especially if the groove of the steel material is misaligned, and hot water leak or flash will occur. In addition, the amount of slag covering the back bead is reduced and the appearance of the back bead becomes poor. In general, the backing material may be provided with slag pockets in the solid flux in order to stably bring out the back bead, but this is also possible in the present invention. For the adhesive portion to the back surface of the steel material, a heat-resistant tape made of metal foil such as aluminum foil or zinc foil with an adhesive is used.
【００１２】本発明の裏ビード形成は、上述した如くア
ークを直接開先裏面部に当てるのではなく、細径ワイヤ
による高電流でのジュール熱による高溶着とアークが金
属粉上で生じて細粒の金属粉の溶融によって生じた多量
の溶融金属の熱により開先裏面を溶かして裏波ビードを
形成させるものであり、この裏波ビード形成方法が非常
に簡易な小入熱用の裏当材の適用を可能にしている。In the back bead formation of the present invention, the arc is not directly applied to the back surface of the groove as described above, but high welding due to Joule heat at a high current by a thin wire and arc are generated on the metal powder to form a fine wire. The backside bead is formed by melting the groove backside by the heat of a large amount of molten metal generated by the melting of granular metal powder.This backside bead formation method is a very simple backing for small heat input. It enables the application of wood.
【００１３】開先内に散布する金属粉６の好ましい粒度
分布は粒径８５０μｍ以下で、かつ平均粒径７５〜３０
０μｍ、さらにＣ量０．０７％以下のものを開先底部か
ら５〜１５ｍｍ高さに散布する。粒径が８５０μｍを超
えると、アークがやや不安定となって裏ビード形状がや
や不揃いとなる。The preferred particle size distribution of the metal powder 6 dispersed in the groove is a particle size of 850 μm or less, and an average particle size of 75 to 30.
0 μm and a C content of 0.07% or less are sprayed at a height of 5 to 15 mm from the bottom of the groove. If the particle size exceeds 850 μm, the arc becomes a little unstable and the back bead shape becomes slightly uneven.
【００１４】平均粒径が７５μｍ未満であると、金属粉
が溶けずらくなり裏ビード形状がやや不揃いとなる。平
均粒径が３００μｍを超えると、アークがやや不安定と
なって裏ビード形状がやや不揃いとなる。また、金属粉
は主にＦｅから成るが、通常鋼材の溶接の場合、他の成
分は特に限定しないが、板厚が厚く、比較的Ｃ量の高い
（０．１６％以上）鋼材の場合は、Ｃ量が０．０７％を
超えると高温われが生じるようになる。なお、金属粉中
のＰおよびＳは０．０２０％以下が好ましく、他の成分
は溶接金属の強度および靱性を考慮してＳｉ，Ｍｎ，Ｍ
ｏその他を脱酸剤や合金剤として含有させることができ
る。また、前記Ｓｉ，Ｍｎ，Ｍｏその他の脱酸剤や合金
剤は、鉄粉にこれらを機械的に混合したものでも良い。
以上の粒径と成分条件を満足すれば、各種サイズの極細
鋼ワイヤをカットした粒状体でも良い。If the average particle size is less than 75 μm, the metal powder is difficult to melt and the shape of the back bead is slightly uneven. If the average particle size exceeds 300 μm, the arc becomes slightly unstable and the back bead shape becomes slightly uneven. Although the metal powder is mainly composed of Fe, other components are not particularly limited in the case of welding a steel material, but in the case of a steel material having a large plate thickness and a relatively high C content (0.16% or more). , When the C content exceeds 0.07%, high temperature cracking occurs. Note that P and S in the metal powder are preferably 0.020% or less, and other components are Si, Mn, M in consideration of the strength and toughness of the weld metal.
o Others can be contained as a deoxidizing agent or an alloying agent. The Si, Mn, Mo and other deoxidizing agents and alloying agents may be iron powder mechanically mixed with them.
Granules obtained by cutting ultrafine steel wires of various sizes may be used as long as they satisfy the above-mentioned particle size and constituent conditions.
【００１５】さらに使用条件としては、金属粉の散布高
さが５ｍｍ未満であるとアークが開先底部に直接達する
ため裏ビードが出すぎたり、特にギャップがある場合、
鋳ばりが生じたり湯もれする場合がある。また、仮付の
ある箇所とない箇所の裏ビードの出かたが安定しない。
散布高さが１５ｍｍを超えると溶け込み不足で裏ビード
が出なくなる。Further, as a use condition, if the height of the metal powder sprayed is less than 5 mm, the arc directly reaches the bottom of the groove, and the back bead is excessively drawn out.
There is a case where flashing occurs and hot water leaks. In addition, the appearance of the back bead at the part with and without the tack is not stable.
If the spray height exceeds 15 mm, the back bead will not come out due to insufficient melting.
【００１６】次に、初層溶接のワイヤは直径１．６〜
２．４ｍｍの鋼ワイヤとする。ワイヤ径が１．６ｍｍ未
満になると、過剰に溶融金属が溶着されるのに対しアー
クが弱くなり過ぎるため裏ビードが出なくなる。ワイヤ
径が２．４ｍｍを超えると、低電流の溶接条件にしない
とアークが強すぎて、鋳ばりが生じたり、本発明のマグ
ネットや拘束治具を使用しない裏当材では溶融金属をさ
さえきれず湯もれする。また、ワイヤ径が２．４ｍｍ超
の太径で低電流の溶接条件とするとアークが不安定とな
って裏ビートが均一に形成されなくなる。なお、鋼ワイ
ヤは一般の市販品で良いが、Ｃ量は耐高温われ性から
０．１３％以下のものが好ましい。Next, the first layer welding wire has a diameter of 1.6 to
2.4 mm steel wire. When the wire diameter is less than 1.6 mm, the molten metal is excessively deposited, but the arc becomes too weak, so that the back bead does not come out. If the wire diameter exceeds 2.4 mm, the arc is too strong unless a low current welding condition is used, and flashing occurs, or the backing material of the present invention, which does not use a magnet or a restraint jig, can block molten metal. Spill hot water. In addition, if the wire diameter is larger than 2.4 mm and the welding condition is low current, the arc becomes unstable and the back beat cannot be formed uniformly. The steel wire may be a general commercial product, but the C content is preferably 0.13% or less from the viewpoint of high temperature resistance.
【００１７】溶接入熱量は３０〜７０ｋＪ／ｃｍとす
る。溶接入熱量が３０ｋＪ／ｃｍ未満であると、金属粉
および仮付を溶かして裏ビードを形成することができな
い。７０ｋＪ／ｃｍを超えると高入熱により高温とな
り、鋳ばりが生じたり、本発明のマグネットや拘束用治
具を使用しない裏当材では溶融金属をささえきれず湯も
れする。なお、各ワイヤ径における好ましい電流範囲を
表１に示す。The welding heat input is 30 to 70 kJ / cm. If the welding heat input is less than 30 kJ / cm, the metal beads and the tack will not be melted to form the back bead. When it exceeds 70 kJ / cm, the heat input becomes high due to high heat input, flashing occurs, and the backing material of the present invention which does not use the magnet or the restraining jig cannot support the molten metal and leaks the molten metal. Table 1 shows a preferable current range for each wire diameter.
【００１８】[0018]
【表１】 [Table 1]
【００１９】本発明において電極数はワイヤ径および入
熱量が本発明の範囲内であれば、単電極溶接でも２電極
以上の多電極での溶接でも可能である。また、多層盛溶
接の場合の２層目以降のワイヤ径は２．４ｍｍを超える
太径で溶接条件は通常の大入熱量の条件としても良い。
なお、組み合わせて使用するフラックスとしては、入熱
量が比較的低いので通常サブマージアーク溶接用として
使用している溶融型フラックスおよび焼成型フラックス
のいずれでも良い。ただし、多層盛溶接の場合は開先角
度が小さいのでスラグ剥離性の良好なフラックスを選定
する必要がある。In the present invention, as long as the wire diameter and the heat input amount are within the scope of the present invention, the number of electrodes can be single electrode welding or welding with two or more electrodes. In the case of multi-layer welding, the wire diameter of the second and subsequent layers may be thicker than 2.4 mm, and the welding conditions may be normal large heat input.
The flux used in combination may be either a fusion type flux or a firing type flux which is usually used for submerged arc welding because the heat input is relatively low. However, in the case of multi-layer welding, since the groove angle is small, it is necessary to select a flux with good slag removability.
【００２０】以下実施例により本発明をさらに詳細に説
明する。The present invention will be described in more detail with reference to the following examples.
【００２１】[0021]
【実施例】表２に示す鋼材に対し、表３のワイヤとスラ
グ剥離性良好なＴｉＯ2 −Ａ１2Ｏ3 系溶融型フラック
スとを組合せ、表４、表５（表４のつづき）に示す開先
形状、裏当材、金属粉および溶接条件で初層のみ溶接長
１５００ｍｍの片面サブマージアーク溶接を行った。EXAMPLE The steel materials shown in Table 2 were combined with the wire shown in Table 3 and a TiO 2 —A1 2 O 3 based melting type flux having good slag removability, and shown in Table 4 and Table 5 (continued from Table 4). Single-sided submerged arc welding with a welding length of 1500 mm was performed only on the first layer under the groove shape, backing material, metal powder and welding conditions.
【００２２】[0022]
【表２】 [Table 2]
【００２３】[0023]
【表３】 [Table 3]
【００２４】[0024]
【表４】 [Table 4]
【００２５】[0025]
【表５】 [Table 5]
【００２６】なお、開先のルートフエイスは０〜２ｍ
ｍ、ギャップは０〜５ｍｍ、仮付は被覆アーク溶接棒を
用い５００ｍｍおきに５０ｍｍ長さで４カ所行った。ま
た、裏当材の鋼材への固定に使用した耐熱テープは１５
０ｍｍ幅のアルミニウム箔に接着剤を付けたものに幅１
２ｍｍ，深さ１．２ｍｍのスラグポケットを設けた幅４
０ｍｍ，長さ２５ｍｍ，高さ８ｍｍの固形フラックスを
連続して接着し鋼材裏面に接着した。固形フラックスの
上部に添装したガラス繊維シートは厚さ０．５ｍｍ，幅
３８ｍｍのものを用いた。また、使用した金属粉のＣ以
外の成分はＳｉ０．０１〜０．１２％，Ｍｎ０．５２〜
１．５３％，Ｐ０．００８〜０．０１８％，Ｓ０．００
５〜０．０１６％，残Ｆｅの範囲のものを用いた。The root face of the groove is 0 to 2 m.
m, the gap was 0 to 5 mm, and the tacking was performed using a covered arc welding rod at 500 mm intervals and 50 mm length at 4 positions. Also, the heat-resistant tape used to fix the backing material to the steel material is 15
Width 1 to 0mm width aluminum foil with adhesive
Width 4 with a slag pocket of 2 mm and depth of 1.2 mm
A solid flux having a length of 0 mm, a length of 25 mm, and a height of 8 mm was continuously bonded to the back surface of the steel material. Of solid flux
The glass fiber sheet attached to the upper part had a thickness of 0.5 mm and a width of 38 mm. Moreover, the components other than C of the used metal powder are Si0.01-0.12%, Mn0.52-
1.53%, P0.008-0.018%, S0.00
A material having a range of 5 to 0.016% and residual Fe was used.
【００２７】溶接後に裏ビードの状態その他を観察し
た。それらの結果を表６に示す。After welding, the state of the back bead and others were observed. The results are shown in Table 6.
【００２８】[0028]
【表６】 [Table 6]
【００２９】本発明例であるＮｏ．１〜Ｎｏ．１０およ
びＮｏ．１４は、裏当材の取付けおよび取外しが容易
で、鋳ばりや湯もれもなく、溶接後の裏ビード状態が良
好であり高温われ等の欠陥もなく極めて良好な結果であ
った。またＮｏ．１１は金属粉の粒径が、Ｎｏ．１２は
平均粒径がそれぞれ大きいのでアークがやや不安定とな
って裏ビード形状がやや不揃いとなったが、他は良好で
あった。Ｎｏ．１３は金属粉の平均粒径が小さく裏ビー
ド形状がやや不揃いとなったが、他は良好であった。No. 1, which is an example of the present invention. 1 to No. 10 and no. In No. 14, the backing material was easily attached and detached, there was no flashing of the flash, there was no leakage of hot water, the back bead state after welding was good, and there were no defects such as high-temperature cracks, which were very good results. No. No. 11 has a metal powder particle size of No. Since No. 12 had a large average particle size, the arc was a little unstable and the back bead shape was a little uneven, but the others were good. No. In No. 13, the average particle size of the metal powder was small and the back bead shape was slightly uneven, but the others were good.
【００３０】比較例中Ｎｏ．１５は、裏ビード等は良好
であったが開先角度が広すぎるので開先断面積が大きく
能率が悪い。Ｎｏ．１６は、開先角度が狭いので裏ビー
ドが出ず、表側のスラグ剥離も不良であった。Ｎｏ．１
７は、固形フラックスの上部にガラス繊維シートが添装
してないので裏ビードの外観が不良で鋳ばりも生じた。In Comparative Example No. In No. 15, the back bead and the like were good, but the groove angle was too wide, resulting in a large groove cross-sectional area and poor efficiency. No. In No. 16, since the groove angle was narrow, the back bead did not appear, and the slag peeling on the front side was also poor. No. 1
In No. 7, since the glass fiber sheet was not added to the upper part of the solid flux , the appearance of the back bead was poor and flashing occurred.
【００３１】Ｎｏ．１８は、仮付なしで裏当材の鋼材へ
の固定に拘束用治具を用いたので取付けおよび取外しに
多大の労力を要し能率が悪かった。Ｎｏ．１９は、使用
した鋼材のＣ量が高く、金属粉のＣ量も高いので高温わ
れが生じた。Ｎｏ．２０は鉄粉の散布高さが高すぎるの
で、Ｎｏ．２４はワイヤ径が細いので、またＮｏ．２６
は入熱量が低いのでいずれも溶け込み不足で裏ビードが
出なかった。No. In No. 18, since a restraining jig was used to fix the backing material to the steel material without temporary attachment, a large amount of labor was required for mounting and dismounting and the efficiency was poor. No. In No. 19, since the C content of the steel material used was high and the C content of the metal powder was also high, high temperature cracking occurred. No. No. 20 is because the height of the iron powder sprayed is too high. Since No. 24 has a small wire diameter, 26
Since the heat input was low, the back beads did not come out due to insufficient melting.
【００３２】Ｎｏ．２１は鉄粉の散布高さが低いので、
Ｎｏ．２２はワイヤ径が太いので、またＮｏ．２５は、
入熱量が高すぎるのでいずれも湯もれをし、鋳ばりも生
じた。Ｎｏ．２３はワイヤ径が太く低電流の溶接条件で
あるのでアークが不安定となり裏ビードが不揃いとなっ
た。No. No. 21 has a low spray height of iron powder,
No. No. 22 has a thick wire diameter. 25 is
Since the heat input was too high, there was a leak of hot water and flashing. No. In No. 23, since the wire diameter was large and the welding conditions were low current, the arc became unstable and the back beads were uneven.
【００３３】[0033]
【発明の効果】以上詳述したように本発明によれば、Ｖ
またはＹ開先の内側を仮付した鋼材の裏面に、鋼材への
接着部を有し、上部にガラス繊維シートを添装した固形
フラックスを連続して接着し、開先内に金属粉を散布
し、初層を細径の鋼ワイヤを用いてサブマージアーク溶
接をすることで、大型の裏当装置を必要とすることな
く、また裏当材の固定も特別な治具を必要とせず、簡便
に一方からサブマージアーク溶接をすることができる。As described above in detail, according to the present invention, V
Or, the inside of the Y groove is temporarily attached to the back surface of the steel material, and the solid flux with the glass fiber sheet attached to the upper part is continuously bonded and the metal powder is sprinkled inside the groove. However, by submerged arc welding the first layer using a small diameter steel wire, a large backing device is not required, and no special jig is required to fix the backing material. It is possible to perform submerged arc welding from one side.
【図１】本発明の溶接方法例を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a welding method of the present invention.
【図２】（ａ），（ｂ）従来の大型の裏当装置を用いた
溶接方法例を示す断面図である。2A and 2B are cross-sectional views showing an example of a welding method using a conventional large backing device.
【図３】（ａ），（ｂ）従来の裏当材拘束用治具を用い
た溶接方法例を示す断面図である。3A and 3B are cross-sectional views showing an example of a welding method using a conventional backing material restraining jig.
【図４】ガスシールドアーク溶接に使用される固形フラ
ックスを耐熱テープに貼りつけた構造を示す斜視図であ
る。FIG. 4 is a perspective view showing a structure in which a solid flux used for gas shield arc welding is attached to a heat resistant tape.
【図５】ガスシールドアーク溶接における片面溶接方法
例を示す断面図である。FIG. 5 is a cross-sectional view showing an example of a single-sided welding method in gas shielded arc welding.
１ 鋼材 ２ 仮付 ３ 接着部 ４ ガラス繊維シート ５ 固形フラックス ６ 金属粉 ７ ワイヤ ８ フラックス ９ バッキングフラックス １０ 銅当金 １１ エアーホース １２ 耐火性キャンバス １３ マグネット １４ 拘束用治具 １５ 耐熱テープ １６ 剥離紙 １７ 裏当材 1 Steel Material 2 Temporary Attachment 3 Adhesive Part 4 Glass Fiber Sheet 5 Solid Flux 6 Metal Powder 7 Wire 8 Flux 9 Backing Flux 10 Copper Dust 11 Air Hose 12 Fire Resistant Canvas 13 Magnet 14 Restraint Jig 15 Heat-Resistant Tape 16 Release Paper 17 Backing material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佃 輝夫 香川県丸亀市昭和町30番地 今治造船株 式会社内 (72)発明者 松本 正 東京都中央区築地三丁目５番４号 日鐵 溶接工業株式会社内 (72)発明者 皆元 明宏 東京都中央区築地三丁目５番４号 日鐵 溶接工業株式会社内 (56)参考文献 特開 昭57−85694（ＪＰ，Ａ) 特開 平３−281067（ＪＰ，Ａ) 特開 昭56−68591（ＪＰ，Ａ) 溶接シリーズ編集委員会監修 菊田米 男、藤森成夫、稲垣道雄、中山浩著「現 代溶接技術体系 第37巻」 （昭和55年 １月23日 産報出版） Ｐ．74，ＰＰ. 76−78，Ｐ90, ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Teruo Tsukuda Inventor Teruo Tsukuda 30 Showa-cho, Marugame City, Kagawa Imabari Shipbuilding Co., Ltd. (72) Tadashi Matsumoto 3-5-4 Tsukiji, Chuo-ku, Tokyo Nippon Steel Welding Industry Incorporated (72) Inventor Akihiro Minamoto 3-5-4 Tsukiji, Chuo-ku, Tokyo Nittetsu Welding Industry Co., Ltd. (56) Reference JP-A-57-85694 (JP, A) JP-A-3- 281067 (JP, A) JP Sho 56-68591 (JP, A) Supervised by Welding Series Editorial Committee Yoneo Kikuta, Shigeo Fujimori, Michio Inagaki, Hiroshi Nakayama "Current welding technology system Vol. 37" (1980) January 23, Industry News Publication) P. 74, PP. 76-78, P90,
Claims (1)
て、開先角度３５〜５０°のＶまたはＹ開先の内側を仮
付した鋼材裏面に、鋼材への接着部を有し、上部にガラ
ス繊維シートを添装した固形フラックスを連続して接着
し、開先内に金属粉を開先底部から５〜１５ｍｍの高さ
に散布し、初層に直径１．６〜２．４ｍｍの鋼ワイヤを
用いて、溶接入熱量３０〜７０ｋＪ／ｃｍで溶接するこ
とを特徴とする片面サブマージアーク溶接方法。1. In single-sided submerged arc welding of steel material, a back surface of the steel material temporarily attached to the inside of a V or Y groove with a groove angle of 35 to 50 ° has an adhesive portion to the steel material, and a glass upper part /> A solid flux attached with a fiber sheet is continuously adhered, metal powder is sprayed in the groove at a height of 5 to 15 mm from the bottom of the groove, and the diameter of the first layer is 1.6 to 2.4 mm. One-sided submerged arc welding method, characterized in that welding is performed with a welding heat input of 30 to 70 kJ / cm using the above steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33806293A JP2691857B2 (en) | 1993-12-28 | 1993-12-28 | Single-sided submerged arc welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33806293A JP2691857B2 (en) | 1993-12-28 | 1993-12-28 | Single-sided submerged arc welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07185821A JPH07185821A (en) | 1995-07-25 |
| JP2691857B2 true JP2691857B2 (en) | 1997-12-17 |
Family
ID=18314559
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|---|---|---|---|
| JP33806293A Expired - Lifetime JP2691857B2 (en) | 1993-12-28 | 1993-12-28 | Single-sided submerged arc welding method |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9603486D0 (en) * | 1996-09-23 | 1996-09-23 | Hoeganaes Ab | Surface coating method |
| KR100327751B1 (en) * | 1999-06-24 | 2002-03-14 | 김징완 | A method for butt joint one-side welding |
| KR100327753B1 (en) * | 1999-06-24 | 2002-03-14 | 김징완 | A submerged arc one side welding method |
| KR20030032265A (en) * | 2001-10-17 | 2003-04-26 | 대우조선해양 주식회사 | Submerged ceramic backing welding method |
| KR100466364B1 (en) * | 2001-12-28 | 2005-01-13 | 대우조선해양 주식회사 | One side auto welding method by using cut wire type tamping |
| KR20040009321A (en) * | 2002-07-23 | 2004-01-31 | 대우조선해양 주식회사 | Welding wire and thereby using method for high efficiency one side automatic welding |
| JP4707949B2 (en) * | 2003-11-20 | 2011-06-22 | 株式会社大島造船所 | Multi-electrode single-sided submerged arc welding method |
| JP2005349407A (en) * | 2004-06-08 | 2005-12-22 | Kobe Steel Ltd | One-side submerged arc welding method |
| JP2006035279A (en) * | 2004-07-28 | 2006-02-09 | Nippon Steel & Sumikin Welding Co Ltd | Multi-electrode one side submerged arc welding method |
| CN104259633A (en) * | 2014-07-22 | 2015-01-07 | 江苏省沙钢钢铁研究院有限公司 | Efficient single-face submerged arc welding method |
| CN105618905A (en) * | 2016-03-24 | 2016-06-01 | 戴寒冰 | Welding method of submerged-arc welding |
| CN107999997B (en) * | 2017-11-23 | 2020-06-16 | 青岛武船重工有限公司 | Filling powder for FAB method welding |
| CN108393562A (en) * | 2018-05-09 | 2018-08-14 | 无锡洲翔成套焊接设备有限公司 | Steel plate submerged arc welding assembly line |
| CN113182651A (en) * | 2021-04-25 | 2021-07-30 | 中建钢构天津有限公司 | H-shaped steel welding method without back chipping |
| CN115178846B (en) * | 2022-07-27 | 2023-10-24 | 中车青岛四方机车车辆股份有限公司 | Welding method and welding auxiliary device |
-
1993
- 1993-12-28 JP JP33806293A patent/JP2691857B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 溶接シリーズ編集委員会監修 菊田米男、藤森成夫、稲垣道雄、中山浩著「現代溶接技術体系 第３７巻」 （昭和５５年１月２３日 産報出版） Ｐ．７４，ＰＰ．７６−７８，Ｐ９０， |
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|---|---|
| JPH07185821A (en) | 1995-07-25 |
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