JPS61206595A - Coated electrode - Google Patents
Coated electrodeInfo
- Publication number
- JPS61206595A JPS61206595A JP4597085A JP4597085A JPS61206595A JP S61206595 A JPS61206595 A JP S61206595A JP 4597085 A JP4597085 A JP 4597085A JP 4597085 A JP4597085 A JP 4597085A JP S61206595 A JPS61206595 A JP S61206595A
- Authority
- JP
- Japan
- Prior art keywords
- sepiolite
- coating material
- welding
- ratio
- coating
- 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.)
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Links
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- Nonmetallic Welding Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は被覆剤の固着性を極めて良好なものにし生産性
の向上を図ると共に、被覆剤の可撓性と高電流使用での
耐棒焼は性を著しく改善した非低水素系被覆アーク溶接
棒(以下非低水素系棒と称する)に関するものでろる=
〔従来の技術〕
非低水素系棒は、低水素系被覆アーク溶接棒に比べ溶接
金属中の水Xitが多いことから拘束の大きい被浴接物
での耐割れ性や衝撃靭性は劣るものの、溶接作業性が良
好であるところから利用範囲が極めて広い。例えばイル
ミナイト系全姿勢用溶接棒は造船、橋梁、機械、建築お
よび圧力容器などに、また、ライムチタニャ系溶接棒で
は軽鰍鉄骨、自動車部品、セグメント、ドラム缶などに
用いられ、いずれも軟鋼の薄板、中板の溶接に適してい
る。Detailed Description of the Invention [Industrial Field of Application] The present invention improves the adhesion of the coating material to improve productivity, and improves the flexibility of the coating material and rod resistance when used at high currents. This relates to a non-low hydrogen coated arc welding rod (hereinafter referred to as a non-low hydrogen bar) that has significantly improved hardening properties. Compared to this, since there is more water Xit in the weld metal, the cracking resistance and impact toughness of welded objects, which are highly constrained, are inferior, but since welding workability is good, the range of use is extremely wide. For example, Illuminite welding rods for all positions are used in shipbuilding, bridges, machinery, architecture, pressure vessels, etc., and Lime Titanium welding rods are used for light steel frames, automobile parts, segments, drums, etc., and both are used for thin sheets of mild steel. , suitable for welding medium plates.
ところで非低水素系棒の生産性向上や浴接作業性の改善
については飼えば特公昭59−2599号公報に被覆剤
中にペクトライトを0.1〜3重US添加することによ
り被覆剤の固着性を高め輸送時における被覆剤の脱落を
防ぎ、かつ製造時での塗装性を良好にし、傷やへこみを
減少させ生産歩留の向上を図れることが示嘔れている。By the way, in order to improve the productivity of non-low hydrogen rods and the workability of bath work, it is reported in Japanese Patent Publication No. 59-2599 that the coating agent can be fixed by adding 0.1 to 3 layers of pectolite to the coating agent. It has been shown that it is possible to improve the coating properties and prevent the coating from falling off during transportation, improve the coating properties during manufacturing, reduce scratches and dents, and improve production yield.
しかし、このヘクトライトはその埋蔵箇所が極く限られ
ているため、その適用には限界がある。However, since the reserves of hectorite are extremely limited, there are limits to its application.
ま友、被覆剤の可撓性向上については、例えば特公昭5
4−24974号公報に記載されるように水ガラス中に
アルカリ溶液、タンノ4り質、アルミニウム塩および多
糖類からなる混合添加剤t O,1〜10%添加したも
のを固着剤として用いることによりかなシ改善されてい
る。しかし、この固着剤を使用した非低水素系棒は高電
流で使用すると溶接棒後半部分の被覆剤中の有機物がジ
ュール熱で分解燃焼し所謂棒焼げ現象を起こし易く、棒
焼げを起こした部分を使用すると溶接時にアークが不安
定になるという欠点がある。そこで特開昭57−206
595号公報では固着剤としての水ガラスにおける81
0□/Na2Oのモル比を2.8〜3.8にした高モル
比水ガラスの使用により棒焼けを防止している。Mayu, regarding the improvement of flexibility of coating materials, for example,
As described in Japanese Patent Application No. 4-24974, a mixed additive consisting of an alkaline solution, a tandrite, an aluminum salt, and a polysaccharide in an amount of 1 to 10% is added to water glass as a fixing agent. Kanashi has been improved. However, when non-low hydrogen rods using this adhesive are used at high currents, the organic matter in the coating material in the latter half of the welding rod decomposes and burns due to Joule heat, which tends to cause so-called stick burn phenomenon. There is a disadvantage that the arc becomes unstable when welding if a part that has been welded is used. Therefore, JP-A-57-206
No. 595 discloses 81 in water glass as a fixing agent.
Stick burn is prevented by using high molar ratio water glass with a molar ratio of 0□/Na2O of 2.8 to 3.8.
ところが特開昭57−100896号公報に記載されて
いるように水ガラスのモル比を高くすることは製造時で
の乾燥割れを生じさせ、またモル比が高くなるとNa
20やに20などのアルカリ酸化物が減少するのでアー
ク状態が劣化しスパッタの飛散が多くなるという問題点
がある。However, as described in JP-A-57-100896, increasing the molar ratio of water glass causes drying cracks during production, and when the molar ratio is high, Na
Since the amount of alkali oxides such as 20 and 20 is reduced, the arc condition deteriorates and the amount of spatter increases.
このように現状の非低水素系棒において生産性が良好で
、かつ被覆剤の可撓性と高電流使用における耐棒焼けa
t−改善し、さらにその他アーク状態、スパッタ、スラ
グ状態、ビード外観などの溶接作業性を満足させること
は非常に困難であった。In this way, the current non-low-hydrogen rods have good productivity, the flexibility of the coating material, and the stick burn resistance when using high currents.
It was very difficult to improve welding performance and to satisfy other welding workability such as arc condition, spatter, slag condition, and bead appearance.
これらの要求をすべて満たす溶接棒を得ることは溶接棒
を使用する各業界から強く要望されていた。It has been strongly desired by various industries that use welding rods to obtain a welding rod that satisfies all of these requirements.
本発明は前述した実情に鑑み、被覆剤組成を吟味し従来
の諸性能を確保するとともに被覆剤の固着性を極めて良
好なものにして生産性の向上が可能で、製作する構造物
が複雑で狭い箇所での溶接時に要求式れる被覆剤の可撓
性にも優れ、さらに、高ti’r使用した場合でも充分
満足しうる被覆剤の耐棒焼は性が得られる非低水素系棒
を提供するものである。In view of the above-mentioned circumstances, the present invention carefully examines the composition of the coating material, ensures the conventional performance, and makes the adhesion of the coating material extremely good, thereby improving productivity. We have developed a non-low-hydrogen rod that has excellent coating flexibility, which is required when welding in narrow areas, and also has sufficient coating resistance even when using high Ti'r. This is what we provide.
本発明は前述しに要望に応えるために非低水素系棒の被
覆剤を種々検討した結果、生産性の向上と浴接作業時に
おける被覆剤の可撓性および耐棒焼は注を著しく改善し
たものであって、その要旨とするところは被覆剤中に1
05μ以下の粒子が85重量%(以下係で表わす)以上
のセピオライトを0.5〜5.0%、有機物を0.5〜
8.5係含有し、かつ有機物量に対するセピオライト量
の比t−0,3〜3.5とすることを特徴とする非低水
素系棒にあ生産性と被覆剤の可撓性の改善については被
覆剤上のものの固着性を強靭な本のにし、かつ溶接棒の
心線と被覆剤との固層力を良好にすることが極めて有効
で多ることに看目し種々研究を重ねた結果、セピオライ
トと有機物の併用および有機物量に対するセピオライト
量の比を限定することが極めて重要でもつとも効果の大
きいことを見出した。セピオライトfl天然の含水マグ
ネシウム珪酸塩テ、化学構造式ti(Of(2)4(O
f()4Mg 881120306〜8 k120で表
わ嘔れ、結晶構造は繊維状を呈しておシ、水ガラスにお
ける分散性が良好で被覆剤に添加し几場合、水ガラスと
の混合時にその繊維同志が複雑にからみ合ったシ、はぐ
れ友シして被覆剤の増粘性を高める作用がめる。さらに
、溶接棒製造時での乾燥工程においては囃ビオライト自
身で固結するはかりか他の被覆剤をも固結する性質がる
る。The present invention has been developed as a result of various studies on coating materials for non-low hydrogen rods in order to meet the above-mentioned demands.The present invention has improved productivity and significantly improved the flexibility of the coating material during bath welding work and the resistance to rod burning. The gist of this is that 1.
0.5 to 5.0% of sepiolite containing 85% by weight or more of particles of 0.05μ or less (hereinafter expressed as a ratio), and 0.5 to 5.0% of organic matter.
Regarding improvement of productivity and flexibility of coating material for non-low hydrogen rods, which contain 8.5% and have a ratio of sepiolite to organic matter of t-0.3 to 3.5. has conducted various researches, finding that it is extremely effective to improve the adhesion of materials on the coating material and to improve the bonding force between the core wire of the welding rod and the coating material. As a result, it was found that the combined use of sepiolite and organic matter and limiting the ratio of the amount of sepiolite to the amount of organic matter are extremely important and highly effective. Sepiolite fl natural hydrated magnesium silicate, chemical structure ti(Of(2)4(O
f()4Mg 881120306~8 It is expressed as k120, has a fibrous crystal structure, and has good dispersibility in water glass. The complex intertwining of these molecules causes them to separate and increase the viscosity of the coating material. Furthermore, during the drying process during the production of welding rods, the biolite itself has the property of solidifying scales and other coating materials as well.
従ってこれらの増粘性と固結性が良好なゆえに被覆剤の
固着性は優れたものになる。Therefore, since these have good thickening properties and solidifying properties, the coating material has excellent adhesion properties.
また、セピオライトは前述のとお9結晶水を含んでいる
ため高電流を使用して溶接した場合、その結晶水が浴接
のジュール熱によシ溶接棒後半部の被覆剤から脱水する
際その被覆剤からの放熱が活発となシ、被覆剤の耐棒焼
げ性を良好にする作用もめる。In addition, as mentioned above, sepiolite contains water of crystallization, so when welding using high current, the water of crystallization is dehydrated from the coating material on the latter half of the welding rod by the Joule heat of bath welding. The active heat dissipation from the coating material also improves the stick scorch resistance of the coating material.
このようにセピオライトは生産性向上と被覆剤の可撓性
および高電流使用における耐棒焼げ住改善に大いに貢献
できるが、被覆剤に添加するセピオライトが粗粒でおっ
たシ、多量に使用しfcシするとアーク力が弱ま9不安
定とな)、スパッタの飛散も多くなる。そこでセピオラ
イトの粒度と添加量の限定をする必要がeD、さらにア
ーク状態を良好にし健全な溶接作業性を保有するために
有機物の併用はかくことのできないもので、有機物量に
対するセピオライト量の比が重要な要件でおることを確
認した。本発明は以上の知見に基づいてなされたもので
おる。なお、ここでいう有機物とは澱粉、セルロース、
木粉、デキストリン、アルギン酸ソーダなどを指し、単
独あるいは種々の組合せで使用できる。As described above, sepiolite can greatly contribute to improving productivity, flexibility of coating materials, and resistance to stick burn when using high currents. When fc is applied, the arc force becomes weaker and becomes unstable), and more spatter is scattered. Therefore, it is necessary to limit the grain size and addition amount of sepiolite.Furthermore, in order to maintain a good arc condition and maintain sound welding workability, it is impossible to use organic substances in combination, and the ratio of the amount of sepiolite to the amount of organic substances is We confirmed that this is an important requirement. The present invention has been made based on the above findings. Note that the organic substances referred to here include starch, cellulose,
It refers to wood flour, dextrin, sodium alginate, etc., and can be used alone or in various combinations.
以下本発明における作用について詳述する。 The effects of the present invention will be explained in detail below.
本発明の非低水素系棒において、まず被覆剤中に105
μ以下の粒子が85係以上のセピオライトを含有せしめ
るのは溶接作業性の安定性および使い易さと、被覆剤の
固着性と均一性を図9、生産歩留を向上させ、かつ被覆
剤の可撓性を良好にするためでめる。その粒度が105
μ以上の粒子が15%以上ではアークが不安定でスパッ
タの飛散が多くなり、生産性の面では繊維状のセピオラ
イトの分散性が劣化し被覆剤の固着性を悪くし、溶接棒
製造の際の乾燥工程に2いて被覆剤表面部に傷やへこみ
、およびかすれなど金生じ易くなる。In the non-low hydrogen rod of the present invention, first, 105
Containing sepiolite with a particle size of 85 or more is to improve stability and usability of welding workability, improve adhesion and uniformity of the coating material, improve production yield, and improve coating material flexibility. Decorated to improve flexibility. Its particle size is 105
If the content of particles larger than μ is 15% or more, the arc becomes unstable and there is a lot of spatter, and in terms of productivity, the dispersibility of fibrous sepiolite deteriorates and the adhesion of the coating material deteriorates, which makes it difficult to manufacture welding rods. During the drying process, scratches, dents, and scratches are likely to occur on the surface of the coating.
t7j%接時における被覆剤の可撓性が悪くなシ被覆剤
が剥れ落ち、このまま溶接すると被覆筒が形成されずシ
ールド不足とアークの指向性が安定せず、g接金属中に
ブローホールや溶は込み不足、およびビード外観の劣化
などの溶接欠陥が生じる結果となる。The flexibility of the coating material is poor during t7j% contact.The coating material peels off, and if welded in this state, a coating tube will not be formed, resulting in insufficient shielding and unstable arc directionality, resulting in blowholes in the welded metal. This results in welding defects such as insufficient penetration, poor weld penetration, and deterioration of bead appearance.
次にセピオライトの添装置tl−0,5〜5.0%に限
定したのはセピオライトの効果が他の諸性能に4劣化す
ることなく充分に活用するためでるり、0.5俤未満で
は被覆剤の固層性は従来と同様で悪く、生産歩留の低下
や被覆剤の可撓性の劣化を招き、さらに高電流で溶接し
た際未使用部の被覆剤の耐棒焼は性が悪くなシ、このま
ま便用するとアーク力が弱く不安定となりスパッタの飛
散が多くなると共に被覆剤中の脱酸剤が変質し溶接金属
の脱酸反応が充分に行なえずブローホールやビットが発
生する原因となる。−万5.096i超えるとアーク力
が弱くなりスパッタが多く、さらには被覆剤同志が緻密
になり過ぎて乾燥工程において被覆剤の表面部が先に乾
燥して内部の水分が未乾燥状態でとり残嘔れ、この水分
が乾燥熱によって蒸発し、被覆剤内部の水蒸気圧が限界
値を超えると乾燥した被覆剤の表面が突を破られ乾燥割
れを発生する。Next, the addition of sepiolite was limited to 0.5 to 5.0% in order to fully utilize the effect of sepiolite without deteriorating other properties. The solidification properties of the coating material are as poor as before, resulting in lower production yields and deterioration of the flexibility of the coating material.Furthermore, when welding at high currents, the coating material in unused areas has poor stick scorch resistance. If you use it as is, the arc force will be weak and unstable, resulting in increased spatter scattering, and the deoxidizing agent in the coating will deteriorate, making it impossible to fully deoxidize the weld metal, which will cause blowholes and bits to occur. becomes. - If it exceeds 5,096i, the arc force will be weak and there will be a lot of spatter, and furthermore, the coating will become too dense and the surface of the coating will dry first in the drying process, and the moisture inside will be absorbed in the undried state. When this residual moisture evaporates due to the drying heat and the water vapor pressure inside the coating exceeds a limit value, the surface of the dried coating is broken and dry cracks occur.
有機物を被覆剤中に0.5〜8.5俤含有せしめるのは
適度なアーク力によるアークの安定性を確保し、欠陥の
ない溶接金属を得ると共に生産性の向上に寄与できるか
らで0.5%未満ではアーク力が弱いtめにアークが不
安定となりスパッタの飛散が多く、溶は込み不足やスラ
グ巻き込みなども生じ溶接作業性が悪くなる。まfc溶
接棒製造時においては被覆剤の表面部に傷やへこみ、か
すれが発生し易くなυ生産歩留が低下する。一方8.5
1i超えると他の成分を調整しても高電at−使用した
際、未使用部の被覆剤の耐棒焼げ性が劣化し、さらに製
造後ろるいは再乾燥後これを大気中に放置すると被覆剤
の吸湿速度が増加し、このまtffI接すると溶接金属
中に拡散性水素鰍が多くなり耐割れ性や耐ブローホール
性などが悪化する。The reason why organic matter is contained in the coating material in an amount of 0.5 to 8.5 is to ensure arc stability with appropriate arc force, obtain defect-free weld metal, and contribute to improving productivity. If it is less than 5%, the arc becomes unstable due to the weak arc force, and a lot of spatter is scattered, leading to insufficient weld penetration and slag entrainment, resulting in poor welding workability. When manufacturing fc welding rods, scratches, dents, and scratches are likely to occur on the surface of the coating material, resulting in a decrease in production yield. On the other hand, 8.5
If it exceeds 1i, even if other components are adjusted, the stick scorch resistance of the unused part of the coating will deteriorate when high electric current is used, and furthermore, if it is left in the atmosphere after manufacturing or re-drying. The rate of moisture absorption of the coating material increases, and if it comes into contact with TffI, diffusible hydrogen particles will increase in the weld metal, resulting in deterioration of cracking resistance, blowhole resistance, etc.
有機物量に対するセピオライト監の比ヲ0.3〜3.5
とするのは主意性向上と被覆剤の可撓性と高電流での被
覆剤の耐棒焼げ性を充分満足させ、他の諸性能も劣化し
ないようにするために重装でろる。その比が0.3未満
では被覆剤の固着性が低下し、前述し九本発明の目的を
果すことができず、特に浴接時における被覆剤の耐棒焼
は性が悪くなりs接作業性の劣化および溶接欠陥を生じ
ることになる。The ratio of sepiolite to the amount of organic matter is 0.3 to 3.5
The reason for this is to fully satisfy the requirements of flexibility, flexibility of the coating material, and stick burn resistance of the coating material at high currents, and to prevent deterioration of other properties as well. If the ratio is less than 0.3, the adhesion of the coating material decreases, making it impossible to achieve the above-mentioned object of the present invention, and in particular, the coating material has poor stick scorch resistance during bath welding, resulting in poor welding properties. This will result in deterioration of properties and welding defects.
また、その比が3.5t−超えるとアークが不安定とな
シス・9ツタが多くなると共に、アークに広がりがたく
なシビードが凸形状を呈するようになり、さらにアーク
力が弱くなるのでスラグの粘性が増加し、溶融スラグが
被覆筒にからみ易くなるために溶は込み不足やスラグ巻
き込みを生じるようになる。Furthermore, if the ratio exceeds 3.5t, the number of cis/9 vines that make the arc unstable will increase, and the cybeads that are difficult to spread into the arc will take on a convex shape, further weakening the arc force and causing slag. The viscosity of the molten slag increases, making it easier for the molten slag to become entangled in the coating tube, resulting in insufficient molten penetration and slag entrainment.
以下に実施例に基づいて、本発明14Jと比較例および
従来列とを比較して本発明の効果を芒らに具体的に述べ
る。Below, based on Examples, the effects of the present invention will be specifically described by comparing the present invention 14J with a comparative example and a conventional train.
第1表に試験に供し几セピオライトの種々の粒度を示し
、第2表にはイルミナイト系、ライムチタ二ャ系および
鉄粉酸化鉄系の各被覆タイプにおける本発明溶接棒と比
較溶接棒および従来溶接棒の各性能試験結果を示すもの
でろる。Table 1 shows the various particle sizes of sepiolite subjected to the test, and Table 2 shows the welding rods of the present invention, comparative welding rods, and conventional welding rods with each coating type of illuminite type, lime titania type, and iron powder iron oxide type. It shows the results of various performance tests of welding rods.
なお、供試醗接棒の製造は第2表に示すそれぞれの被覆
剤に固着剤を添加し、湿式混合を行儀って直径4.0m
の軟鋼心線を用い、その長さ全イルミナイト系、ライム
チタニャ系のものが400m、鉄粉酸化鉄系のものが5
50■とじ、通常の押出し式塗装機により被覆塗装した
後、イルミナイト系、ライムチタニャ系で最高温度15
0℃、鉄粉酸化鉄系で最高温度190℃の乾燥を行ない
各種溶接棒を作成した。The test connecting rod was manufactured by adding a fixing agent to each of the coating materials shown in Table 2 and performing wet mixing to obtain a diameter of 4.0 m.
A soft steel core wire of
50■ After binding and coating with a normal extrusion coating machine, the maximum temperature is 15 for Illuminite and Lime Titania types.
Various welding rods were prepared by drying at 0°C and a maximum temperature of 190°C using iron powder and iron oxide.
各試験方法とその良否判定基準は以下のとおシとした。Each test method and its acceptance criteria are as follows.
被覆剤の固着性を定量化する九めの被覆剤脱落試験では
約1.5 kgの製品を板厚6■で作成した5 55m
X300■X 720mの鋼製の箱に入れ1分間で40
回転の速度で5分間回転させ被覆剤の脱落した割合を測
定したものでその脱落率が2s以下のものを良好と判定
した。生産歩留の試験については溶接棒約150−を製
造し、塗装および乾燥工程において傷、へこみ、かすれ
、または乾燥割れが生じないものを良品とし、製造した
全溶接棒に対する良品の割合を生産歩留としその値が9
9チ以上であったものを良好とした。また、被覆剤の可
撓性試験については第1図に示す固定治具4の一部に溶
接棒のホルダー掴み代1t−固定し、他端に向って円弧
状に曲げるものでその判定方法は棒曲げ角度で表わし、
第1図に示す160+w+’の管状治具3の円弧面に押
しつけられて曲げられた溶接棒2の被覆剤が欠は始めた
状態で止め友ときの溶接棒先端部の延長線と治具に最初
にセットし九溶接禅とのなす角度(θ)で示し、七の角
度は供試溶接棒10本の平均値でぬり、180°曲がっ
たものを良好とした。次に被覆剤の耐棒焼は性試験では
軟鋼板(板厚12■、幅100m、長さ800 wm
) ft用い交流溶接損金使用して下向浴接を行ない、
電流はイルミナイト系、ライムチタニャ系には200A
i用い、鉄粉酸化鉄系では180Aで試験を行ない、そ
の判定方法は未使用部の被覆剤が変質して被覆筒が形成
されず、かつアーク状態が急変して不安定となりアーク
力が低下し始める位置でアークを消弧させ、そのときの
残シの浴接棒長で表わし、その値は供試溶接棒10本の
平均値でるり、60w以下を良好とじた。さらに他の浴
接作業性試験としてイルミナイト系、ライムチタニャ系
溶接棒については180Aで下向、水平すみ肉姿勢を、
150Aで立向姿勢t!ilI査し、鉄粉酸化鉄系溶接
棒については、いずれも160Aで下向と水平すみ肉姿
勢にて調査した。In the ninth coating shedding test to quantify the adhesion of the coating, a product weighing approximately 1.5 kg was prepared with a plate thickness of 6mm.
X300 ■X 40 in 1 minute in a 720m steel box
The coating was rotated at a rotating speed for 5 minutes and the rate at which the coating material fell off was measured, and those whose rate of shedding was 2 seconds or less were judged to be good. Regarding the production yield test, approximately 150 welding rods are manufactured, and those that do not have scratches, dents, scratches, or dry cracks during the painting and drying process are considered good, and the ratio of good welding rods to the total welding rods manufactured is calculated as the production yield. The value of Toshiro is 9
Those with a score of 9 or more were considered good. Regarding the flexibility test of the coating material, the welding rod is fixed to a part of the fixing jig 4 shown in Fig. 1 with a holder gripping width of 1t, and is bent into an arc shape toward the other end. Expressed in bar bending angle,
As shown in Fig. 1, the coating material of the welding rod 2 which is pressed and bent against the circular arc surface of the tubular jig 3 of 160+w+' is starting to chip, and when the welding rod is stopped, the extension line of the tip of the welding rod and the jig. It is indicated by the angle (θ) formed with the nine welding rods set first, and the seven angles are the average value of the 10 test welding rods, and those bent at 180° were considered good. Next, the coating material's stick scorch resistance was tested on a mild steel plate (thickness: 12 mm, width: 100 m, length: 800 wm).
) Perform downward bath welding using AC welding loss using ft,
The current is 200A for Illuminite type and Lime Titania type.
For the iron powder iron oxide type, the test is conducted at 180A, and the judgment method is that the coating agent in the unused part deteriorates and a coating tube is not formed, and the arc condition suddenly changes and becomes unstable and the arc force decreases. The arc was extinguished at the position where it began to arc, and the length of the remaining bath welding rod at that time was expressed as the average value of 10 test welding rods. Furthermore, as another bath welding workability test, Illuminite and Lime Titanium welding rods were tested in a downward, horizontal fillet position at 180A.
Standing position at 150A! All iron powder iron oxide welding rods were investigated at 160A in a downward and horizontal fillet position.
その判定方法についてはアーク状態、スt’? ツタの
多少、スラグ状態およびビード外観などがそれぞれの浴
接姿勢において全て満足するものを良好とした。Regarding the determination method, arc state, st'? Items that were satisfactory in terms of the amount of ivy, slag condition, bead appearance, etc. in each bath contact position were evaluated as good.
第1表セピオライトの粒度構成 (重ffil第2表に
おいてノに1 、A2.46〜A11.A21〜A26
はイルミナイト系であり、&3,44.412〜A16
.ム27〜ム31はライムチタニャ系を示しム5.扁1
7〜420.A32〜ム35は鉄粉酸化鉄系を示す。A
1〜ム5は従来溶接棒の列でるるかアーク状態、スパッ
タ、スラグ状態などの溶接作業性は良好であるもののセ
ピオライトが添加されていないので被覆剤の固着性が悪
く、生産歩留りや被覆剤の可撓性および耐棒焼げ性が劣
化している。A6〜420は本発明溶接棒に関するもの
でろリセビオライトの粒度および添加量が適正で有機物
の含有鰍と有機物量に対するセピオライト量の比も適度
なために被覆剤の固着性は2%以下を示すよう良好でめ
シ、それに伴い生産歩留も99憾以上に向上し、被覆剤
の可撓性においては全て被覆剤の脱落もなくθ= 18
0’と良好である。また、被覆剤の耐棒焼は性を含め浴
嶺作業性も良好でめるので全ての性能を満たすことがで
き、特に従来の鉄粉含有溶接棒の被覆剤の固着性や耐棒
焼げ性の向上には著しい効果がめることがわかった。Table 1: Grain size structure of sepiolite (grain size in Table 2: 1, A2.46~A11.A21~A26
is illuminite type, &3,44.412~A16
.. M27 to M31 indicate lime titania type M5. flat 1
7-420. A32 to M35 indicate iron powder iron oxide type. A
1 to 5 are rows of conventional welding rods, and although welding workability such as arcing, spatter, and slag conditions is good, the adhesion of the coating material is poor because sepiolite is not added, resulting in poor production yield and coating material. The flexibility and stick scorch resistance of the steel have deteriorated. A6 to 420 are related to the welding rods of the present invention.The particle size and addition amount of reseviolite are appropriate, and the ratio of the amount of sepiolite to the amount of organic matter and the amount of organic matter is also appropriate, so the adhesion of the coating material is good, showing 2% or less. As a result, the production yield has improved to over 99%, and the flexibility of the coating material has decreased to θ = 18 without any shedding of the coating material.
0', which is good. In addition, the stick burn resistance of the coating material also provides good bath ridge workability, including hardness, so it can satisfy all performance requirements. It was found that there is a significant effect on improving sexual performance.
次に屋21〜屋35は比較溶接棒の例であり、ム21と
A31はセピオライトの粒子が105μ以下のものが8
5憾以上あるものを多鑑に使用しているので被覆剤の固
着性が向上し被覆剤の可撓性と耐棒焼は性は良好である
が、セピオライトの添加量が5.01i超えているため
被覆剤粒子構成が緻密になシ過ぎ乾燥割れを生じ生産歩
留が低下している。ま友、共に有機物量に対するセピオ
ライト量が多過き゛るのでアークの安定性が悪くス・母
ツタの飛散が多く、ビード外観も悪くなった。腐22は
セピオライトの粒度構成と添加におよび有機物は適量で
あるが有機物置に対するセピオライト量が少な過ぎるた
めに耐棒焼は性が劣り友。屋23と430は有機物置が
多いので耐棒焼は性が悪<430についてはセピオライ
トの添加Mは多いものの105μ以下の粒子が少ないた
めに被覆剤の固着性が悪くなプ生産歩留と被覆剤の可撓
性が劣化し、さらにはアーク状態も悪くなる。A24と
A33はセピオライトと有機物の添加量および有機物の
蓋に対するセピオライト量の比が適正なので耐棒焼は性
が良好で、アーク状態やビード外観などの溶接作業も満
足するものであるが、セピオライトの粒子が105μ以
下のものが85憾よυ少ないので充分な固7ilii性
が得られず、生産歩留および被覆剤の可読性も劣化して
いる。A25とム32はセピオライトの粒度構成は適当
でおるが配合飯が少ないために本発明の目的を果すこと
はできない。ム26.ム28.ム34はセピオライトの
粒度構成が105μ以下のものが85憾よシも少ないの
で被覆剤の固着性の劣化を招き生産歩留と被覆剤の可撓
性を満すことができず、またセピオライトの添加量が多
いことも61アークが不安定でスパッタも多く、アーク
の広がシがないためにビードが凸形状となると共に多層
盛り溶接した場合にスラグ巻き込みや融合不良を生じる
ようになった。しかし、これら3種の比較例はセピオラ
イト中の結晶水が有効に活用されるので耐棒焼けat−
良好にしていることがわかる。A27とム29はセピオ
ライトの粒度構成が本発明範囲を列れ、かつ添加量も少
ないので被覆剤の固着性が悪く、製造時においては塗装
および乾燥工程で被覆剤に傷やかすれなどが多発し生産
歩留が悪くなシ、ま几被覆剤の可撓性も劣ることを示し
ている。Next, Ya21 to Ya35 are examples of comparative welding rods, and Mu21 and A31 have sepiolite particles of 105μ or less.
The adhesion of the coating material is improved because more than 5.0% of sepiolite is used in many cases, and the flexibility and stickiness resistance of the coating material is good, but if the amount of sepiolite added exceeds 5.01i As a result, the particle structure of the coating material becomes too dense, resulting in drying cracks and a decrease in production yield. In both cases, the amount of sepiolite was too high relative to the amount of organic matter, so the arc stability was poor, there was a lot of spatter and mother ivy, and the bead appearance was bad. In case of rot 22, the particle size structure and addition of sepiolite and the amount of organic matter are appropriate, but the amount of sepiolite relative to the organic material is too small, so the stick-grilling resistance is poor. 23 and 430 have a lot of organic storage, so they have poor stick scorch resistance.For 430, although there is a lot of sepiolite added, there are few particles of 105μ or less, so the adhesion of the coating is poor.Production yield and coating The flexibility of the agent deteriorates, and the arc condition also worsens. In A24 and A33, the amount of sepiolite and organic matter added and the ratio of the amount of sepiolite to the lid of organic matter are appropriate, so the stick burn resistance is good and the welding work, such as the arc condition and bead appearance, is also satisfactory. Since the number of particles with a particle size of 105μ or less is 85μ, sufficient hardness cannot be obtained, and the production yield and readability of the coating material are also deteriorated. In A25 and Mu32, although the particle size structure of sepiolite is appropriate, the purpose of the present invention cannot be achieved because the blended rice is small. M26. M28. In Column 34, the particle size structure of sepiolite is less than 105 μm, so the adhesion of the coating material deteriorates, making it impossible to meet the production yield and flexibility of the coating material. Due to the large amount of addition, the 61 arc was unstable and there was a lot of spatter, and because the arc did not spread, the bead became convex, and when multilayer welding was performed, slag entrainment and poor fusion occurred. However, in these three comparative examples, the water of crystallization in sepiolite is effectively utilized, so the resistance to stick burn at-
I can see that it is doing well. In A27 and Mu29, the particle size structure of sepiolite is within the range of the present invention, and the amount added is also small, so the adhesion of the coating material is poor, and during manufacturing, the coating material often suffers from scratches and scratches during the painting and drying process. This indicates that the production yield is poor and the flexibility of the coating material is also poor.
このようにセピオライトの量が0.5%より少なくなる
と棒焼けし易くなるが有機物が適量なためにアーク状態
が良く、溶接作業性は充分満足できるものである。l6
35についてはセピオライトの粒度構成と添加量が適正
なので被覆剤の固着性が向上し、さらに有機物が適量な
ために耐棒焼は性も良好でオシ、本発明の主目的は達成
されるが、有機物置に対するセピオライト鰍の比が大き
過ぎるのでアークが安定せずスパッタの飛散が多くなる
とともにビード外観が劣化するなど溶接作業性が悪くな
る。As described above, if the amount of sepiolite is less than 0.5%, burnout is likely to occur, but since the amount of organic matter is appropriate, the arc condition is good and the welding workability is fully satisfactory. l6
Regarding No. 35, the particle size structure and addition amount of sepiolite are appropriate, so the adhesion of the coating material is improved, and since the amount of organic matter is appropriate, the stick scorching resistance is also good, so the main objective of the present invention is achieved. If the ratio of sepiolite to organic material is too large, the arc will not be stable, resulting in increased spatter scattering and poor welding workability, such as deterioration of bead appearance.
以上説明し友とおり、本発明溶接棒は従来の非低水素系
棒の欠点を克服し、被覆剤の固着性を良好にし生産性と
被覆剤の可撓性を著しく向上させると共に高電流での耐
棒焼げ性をも大幅に改善できる溶接棒を提供でさ、溶接
施工においては溶接作業が容易で浴接作業能率の向上に
太いに貢献できる。As explained above, the welding rod of the present invention overcomes the drawbacks of conventional non-low hydrogen rods, improves the adhesion of the coating material, significantly improves productivity and flexibility of the coating material, and can be used at high currents. By providing welding rods that can greatly improve stick burn resistance, welding work is easier and can greatly contribute to improving the efficiency of bath welding work.
【図面の簡単な説明】
第1図は、被覆アーク溶接棒の可撓性試験を説明するた
めの溶接棒曲げ治具側面略図を示すものである。
1・・・溶接棒の掴み代、 2・・・溶接棒、3・・・
管状治具、 4・・・固定治具。
代理人 谷 山 輝 雄 ′1」
第1図
7: 3@Jeネ4しの4國2ヤイペ
2:38撞樺
、3:III状j♂具
、に1.二WA定3♂具
手続補正書
昭和女手r月/ρ日
氏 名(名称) 査1日水V価氏(X鄭ホう弧4、代
理人
住 所 東京都千代田区丸の内2丁目6番2号丸の内
へ重洲ビル330−〜
7、補正の対象
補 正 書
本願明細書中下記事環を補正いたします。
記
1、第3頁1行目に
「10チ添加」とあるを
「10重量囁添加」と訂正する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view of a welding rod bending jig for explaining the flexibility test of a covered arc welding rod. 1... Gripping allowance for welding rod, 2... Welding rod, 3...
Tubular jig, 4...Fixing jig. Agent Teruo Taniyama '1'' Fig. 1 7: 3 @Je 4 Shino 4 Koku 2 Jaipe 2:38 杞樺, 3: III-shaped j♂ tool, ni 1. 2 WA Establishment 3 ♂ Applicant Procedural Amendment Form Showa Woman Hand R Month/Rho Date Name (Name) Examiner 1 Day Water V Price (X Chung Ho-Ak 4, Agent Address 2-6 Marunouchi, Chiyoda-ku, Tokyo) No. 2 Marunouchi to Shigesu Building 330 - ~ 7. Amendment subject to amendment We will amend the following ring in the specification of this application. Note 1, in the 1st line of page 3, the phrase "addition of 10 chlorides" has been replaced with "10 "Weight whisper addition" is corrected.
Claims (1)
オライトを0.5〜5.0重量%、有機物を0.5〜8
.5重量%含有し、かつ有機物量に対するセピオライト
量の比を0.3〜3.5とすることを特徴とする非低水
素系被覆アーク溶接棒。The coating material contains 0.5 to 5.0% by weight of sepiolite containing 85% by weight or more of particles of 105μ or less, and 0.5 to 8% by weight of organic matter.
.. A non-low hydrogen-based coated arc welding rod characterized by containing 5% by weight of sepiolite and having a ratio of sepiolite to organic matter of 0.3 to 3.5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4597085A JPS61206595A (en) | 1985-03-08 | 1985-03-08 | Coated electrode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4597085A JPS61206595A (en) | 1985-03-08 | 1985-03-08 | Coated electrode |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61206595A true JPS61206595A (en) | 1986-09-12 |
JPS637878B2 JPS637878B2 (en) | 1988-02-18 |
Family
ID=12734081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4597085A Granted JPS61206595A (en) | 1985-03-08 | 1985-03-08 | Coated electrode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61206595A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006224175A (en) * | 2005-02-21 | 2006-08-31 | Nippon Steel & Sumikin Welding Co Ltd | Silicon dioxide for coated electrode, and coated electrode |
JP2010221242A (en) * | 2009-03-23 | 2010-10-07 | Nippon Steel & Sumikin Welding Co Ltd | Non-low-hydrogen base covered electrode |
-
1985
- 1985-03-08 JP JP4597085A patent/JPS61206595A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006224175A (en) * | 2005-02-21 | 2006-08-31 | Nippon Steel & Sumikin Welding Co Ltd | Silicon dioxide for coated electrode, and coated electrode |
JP4536544B2 (en) * | 2005-02-21 | 2010-09-01 | 日鐵住金溶接工業株式会社 | Covered arc welding rod |
JP2010221242A (en) * | 2009-03-23 | 2010-10-07 | Nippon Steel & Sumikin Welding Co Ltd | Non-low-hydrogen base covered electrode |
Also Published As
Publication number | Publication date |
---|---|
JPS637878B2 (en) | 1988-02-18 |
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