JPH0475796A - Low hydrogen type coated arc welding electrode - Google Patents

Low hydrogen type coated arc welding electrode

Info

Publication number
JPH0475796A
JPH0475796A JP18715890A JP18715890A JPH0475796A JP H0475796 A JPH0475796 A JP H0475796A JP 18715890 A JP18715890 A JP 18715890A JP 18715890 A JP18715890 A JP 18715890A JP H0475796 A JPH0475796 A JP H0475796A
Authority
JP
Japan
Prior art keywords
welding
resistance
arc welding
welding electrode
coated
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
Application number
JP18715890A
Other languages
Japanese (ja)
Other versions
JP2716848B2 (en
Inventor
Naoaki Matsutani
松谷 直明
Kunihide Yamane
山根 国秀
Akira Hirano
平野 侃
Isao Nagano
長野 功
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP18715890A priority Critical patent/JP2716848B2/en
Publication of JPH0475796A publication Critical patent/JPH0475796A/en
Application granted granted Critical
Publication of JP2716848B2 publication Critical patent/JP2716848B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To offer an arc welding electrode having good welding workability by coating a steel core wire with a coating material consisting specific weight % of mica, rutile, lime carbonate, fluorite, Fe-Mn, silica sand, org. matter, and iron powder and the balance water glass. CONSTITUTION:The coating material is constituted, by weight 4 to 10% at least one kind of mica or talc, 35 to 62% rutile, 9 to 30% lime carbonate 1 to 8% fluorite, 3 to 18% Fe-Mn, 1 to 15% silica sand, <=2% org. matter, and <=35% iron powder and the balance water glass. The steel core wire is coated with this coating material. The low hydrogen type coated arc welding electrode is constituted in such a manner. The pit resistance, blow hole resistance and crack resistance are obtd. in such a manner by using this welding electrode.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は低水素系被覆アーク溶接棒に関1〜、被覆剤を
改善することによって特にプライマ塗布鋼板におけるピ
ットの発生か皆無であり、また耐ブローホール性が良好
で優れた溶接作業性を発揮する低水素系被覆アーク溶接
棒に関するものである。。
Detailed Description of the Invention (Industrial Application Field) The present invention relates to a low-hydrogen coated arc welding rod, which eliminates the occurrence of pits, especially in primer-coated steel sheets, by improving the coating material, and This invention relates to a low-hydrogen coated arc welding rod that exhibits good blowhole resistance and excellent welding workability. .

(従来の技術) 最近、船舶や橋梁、ブラントなどの陸上構造物の大型化
にともなって、50キロ級高張力鋼材の使用か増加l−
1またプライマ塗布鋼板か多量に使用されている。この
種の溶接には−・般に低水素系被覆アーク溶接棒か使用
さねている。
(Prior art) Recently, as land structures such as ships, bridges, and blunts have become larger, the use of 50kg class high-strength steel has increased.
1 Also, a large amount of primer coated steel plate is used. For this type of welding, low-hydrogen coated arc welding rods are generally not used.

従来、この種の溶接棒のうち、Ca CO3とCa F
 2を主成分とする溶接棒においては溶接性が良好であ
るにもかかわらず、反面スラグのかふり、フラグのはく
り性か悪く、ビー ド形状も凸型となり、溶接作業性か
劣る欠点を有し7でいる。
Conventionally, among this type of welding rods, Ca CO3 and Ca F
Although the welding properties of welding rods containing 2 as the main component are good, on the other hand, they have disadvantages such as slag build-up, poor flag peeling, and convex bead shapes, resulting in poor welding workability. I'm at 7.

方MgCO3−S io2−MgOを主成分としt−溶
接棒は、作業性における欠点は相当除かれているが、未
だ完全とはいえない。例えば、プライマ塗41鋼板を溶
接すると、特にすみ自溶接部にビットの発生がさけられ
ないなとの欠点かある。
On the other hand, although the t-welding rod, which has MgCO3-Sio2-MgO as its main component, has considerably eliminated the drawbacks in terms of workability, it is still not perfect. For example, when welding primer-coated 41 steel plates, there is a disadvantage that bits cannot be avoided, especially in the corner welds.

そこでこのような欠点を除くためにCa CO3゜S 
i O、T 102 、鉄粉を主成分として配合するこ
とによって前記のような溶接作業性を改Mした溶接棒か
、特公昭49〜204137号公報によって開ボされて
いる。
Therefore, in order to eliminate this drawback, Ca CO3゜S
A welding rod with improved welding workability as described above by blending iO, T 102 and iron powder as main components has been disclosed in Japanese Patent Publication No. 49-204137.

しか1〜本発明者等の知見では、溶接作業性はかなり改
善されるか上のとは云い難く、特にプライマ塗布鋼板に
対する耐ビット性、耐ブローポール性か劣る。
However, according to the knowledge of the present inventors, it is difficult to say that the welding workability is significantly improved or better, and in particular, the bit resistance and blow pole resistance for primer-coated steel sheets are inferior.

また特開昭50−56339号公報では、T I O2
CaCO3,Sin、を主成分とする被覆剤を用いて溶
接ヒコームの発生量を低減すること庖開示り、ているか
、本発明者の実験によれば、なる程溶接しニームの発生
量か従来のCa C03Ca F 2系被覆アーク溶接
棒に比べて、低減される効果は認められるか、本質的な
溶接作業性の向」二とプライマ塗布鋼板に対する耐ピツ
ト性は、本発明者らが目標とする域に達していない。
Furthermore, in Japanese Patent Application Laid-open No. 50-56339, T I O2
It is disclosed that the amount of neem generated during welding is reduced by using a coating material mainly composed of CaCO3 and Sin, but according to the experiments of the present inventor, the amount of neem generated during welding is lower than that of the conventional one. Is there a reduction effect compared to Ca C03 Ca F 2-based coated arc welding rods?Is the essential welding workability improvement and pit resistance against primer-coated steel sheets the inventors' goals? The area has not been reached.

(発明が解決1−よう吉する課題) 本発明は溶接作業性を良好にするとともに、プライマ塗
布鋼板に対ずろビットの発生か皆無であり、またブロー
ホールの発生を防止し、溶接後の補に作業をなくす、低
水素系被覆アーク溶接環を提供することを目的とする。
(Solved by the invention 1 - problems to be solved by the invention) The present invention improves welding workability, eliminates the occurrence of jitter bits on primer-coated steel sheets, prevents the occurrence of blowholes, and repairs after welding. The purpose of the present invention is to provide a low-hydrogen coated arc welding ring that eliminates the work involved.

(課題を解決するための手段) 本発明は前述し、た要望に応えるために種々被覆剤成分
を検討17、プライマ塗布鋼板に対する溶接作業性か良
好で、耐ビット、耐ブローホール性か向上したものであ
って、その要旨とするところは、マイカ又はタルクの少
なくとも1種を4〜109o、ルチール35−62%、
炭酸石灰9〜30Qo、蛍石1〜B%.、Fe −Mn
 3〜18%、珪砂1〜15%、有機物2%以下、およ
び鉄粉35?o以下を含み、残部水ガラスから成る被覆
剤を鋼心線に被覆したことを特徴とする低水素系被覆ア
ーク溶接棒である。
(Means for Solving the Problems) In order to meet the above-mentioned demands, the present invention investigated various coating compositions17 and achieved good welding workability for primer-coated steel sheets and improved bit resistance and blowhole resistance. The gist is that at least one of mica or talc is mixed with 4-109o, rutile 35-62%,
Lime carbonate 9-30Qo, fluorite 1-B%. , Fe-Mn
3-18%, silica sand 1-15%, organic matter 2% or less, and iron powder 35? This is a low hydrogen-based coated arc welding rod characterized in that a steel core wire is coated with a coating material containing:

(作  用) 前述のような状況に鑑み本発明者等は低水素系被覆アー
ク溶接棒の溶接作業性および耐ピツト性の向上について
被覆剤の面から鋭意研究を進めてきた。
(Function) In view of the above-mentioned situation, the present inventors have been conducting intensive research on improving the welding workability and pitting resistance of low-hydrogen coated arc welding rods from the viewpoint of coating materials.

その結果、これ等の課題を解決する手段とl−で、ルチ
ール、炭酸石灰、蛍石を主成分とする被覆剤配合に含水
鉱物であるマイカヌはタルクの少なくとも1種を添加す
るこたにより、溶滴移行がスプレー状占なることにより
、溶接作業性か改答され、プライマ塗布鋼板に対する耐
ピッ]・性も大幅に向上するという新規知見を得て、本
発明を成したものである。
As a result, we have found a way to solve these problems by adding at least one type of hydrated mineral, talc, to the coating formulation whose main components are rutile, lime carbonate, and fluorite. The present invention was made based on the new knowledge that the welding workability is improved by the droplet transfer being in the form of a spray, and the crack resistance to primer-coated steel sheets is also significantly improved.

以下に本発明にお1」る構成要件を説明する。The constituent elements of the present invention will be explained below.

〔マイカ、タルク〕[Mica, talc]

マイカ、タルクは結晶水をaむ鉱物であり、溶接金属の
水素源として加えられるもので、4%未満ては+を不足
のためプライマ塗布鋼板ではビット、ブローホールが発
生するほか、溶接作業性における溶滴がド0ツブ移行で
、アンダーカットを生じやすくする。
Mica and talc are minerals that contain water of crystallization, and are added as a hydrogen source to weld metal.If the amount is less than 4%, there is a lack of +, which can cause bits and blowholes in primer-coated steel sheets, as well as impairing welding workability. Undercuts are likely to occur due to droplet migration.

一方10%を超えると溶接作業性は良好であるが、溶接
金属の水素量か過elJ 、となり、耐割れ性が劣化す
る。つまり月S Z 3212 D 5016  r低
水素系被覆アーク溶接棒」の規格においては、拡散性水
素量は15m1/100g以下であることが必要である
ことから上限109oとした。
On the other hand, if it exceeds 10%, welding workability is good, but the amount of hydrogen in the weld metal becomes excessive elJ, and cracking resistance deteriorates. In other words, in the standard of ``Low Hydrogen Coated Arc Welding Rod'', the amount of diffusible hydrogen is required to be 15 ml/100 g or less, so the upper limit was set at 109°.

〔ルヂー ル〕[Rujiru]

ルチールはスラグ生成〜1、粘性調整剤およびアーク安
定剤として使用される。35%未満ではアーク状態が不
安定で、また再アーク性か悪くなる。
Rutile is used as a slag generator, viscosity modifier and arc stabilizer. If it is less than 35%, the arc condition will be unstable and the re-arcing property will be poor.

一方62%を超えるとスラグの流動性か増大し、溶接中
に溶接棒端にスラグがからみつきビード形状を損ねる。
On the other hand, if it exceeds 62%, the fluidity of the slag increases, and the slag gets entangled with the end of the welding rod during welding, damaging the bead shape.

さらに被覆剤の耐熱性が劣化し、溶接時の溶接棒後半部
は棒焼は現象を起し、ブローホール、アンダーカットな
どの溶接欠陥か生じやすくなる。
Furthermore, the heat resistance of the coating material deteriorates, and the latter half of the welding rod during welding becomes burnt out, making welding defects such as blowholes and undercuts more likely to occur.

〔炭酸石灰〕[Carbonated lime]

炭酸石灰はスラグの粘性を調整【7、またガス発生剤と
17て作用する。9%未満ではガス発生剤と1、ての効
果か不充分で、ビット、ブローポールが発生1〜易くな
る。
Lime carbonate adjusts the viscosity of the slag [7] and also acts with the gas generating agent [17]. If it is less than 9%, the effect of the gas generating agent is insufficient, and bits and blowholes are more likely to occur.

一方30%を超えるとアークが弱くなり、棒焼lう現象
が見られるとともに、スラグの被包性が劣化して水平す
み肉におl−するビード形状が凸状となる。
On the other hand, if it exceeds 30%, the arc becomes weak and a stick burning phenomenon is observed, and the encapsulation of the slag deteriorates, resulting in a convex bead shape in the horizontal fillet.

〔蛍  石〕[Firefly stone]

蛍石はスラグ生成剤および粘性調整剤として使用される
。1%未満てはビット、ブローホールか発生し易い。一
方89..を超えるとアーク状態か不安定占なると2−
もにスラグはくり性が劣化する。
Fluorite is used as a slag former and viscosity modifier. If it is less than 1%, bits and blowholes are likely to occur. On the other hand, 89. .. If it exceeds the arc state or unstable state, 2-
The slag removal properties deteriorate.

(:Fe−Mn:l Fe−Mnは脱酸剤および合金剤としての効果がある。(:Fe-Mn:l Fe-Mn is effective as a deoxidizing agent and an alloying agent.

39o未満では脱酸不足となリビッ]・、ブローボール
が発生ずる。また溶接金属の機械的性質が劣化するほか
、アークの強さ、アークの広がりが損なわれてビード形
状が悪くなる。
If the temperature is less than 39°C, deoxidation will be insufficient and blow balls will occur. In addition, the mechanical properties of the weld metal deteriorate, and the strength and spread of the arc are impaired, resulting in poor bead shape.

一方18%を超えると脱酸過剰となってビットが発生ず
る志、、!:もに溶接金属が硬化し、耐割れか劣化する
On the other hand, if it exceeds 18%, there will be excessive deoxidation and bits will occur! : The weld metal also hardens and its cracking resistance deteriorates.

〔珪  砂〕[silica sand]

珪砂はスラグ生成剤として使用される。1%未満では十
分なスラグの粘性が得られず、下向溶接におけるスラグ
の被包性が劣化し、ビー ド形状か凸状となる。
Silica sand is used as a slag forming agent. If it is less than 1%, sufficient slag viscosity cannot be obtained, and the encapsulation of the slag in downward welding deteriorates, resulting in a bead or convex shape.

一方1506を超えるとスラグの粘性か著1〜く増大1
7、ビットが発生]7易くなったり、被覆筒が深くなり
すぎてアーク状態か不安定となる。
On the other hand, when it exceeds 1506, the viscosity of the slag increases significantly by 1 to 1.
7. Bits are generated] 7. If the coating becomes too deep, the arc state becomes unstable.

〔有機物〕〔organic matter〕

有機物として木粉、デキスI・リン等を塗装助剤として
使用するものであるか、2%を超えて添加すると被覆の
固着性か劣化するので好ましくない。
If organic substances such as wood flour or dex I/phosphorus are used as coating aids, or if they are added in an amount exceeding 2%, the adhesion of the coating will deteriorate, which is not preferable.

〔鉄  粉〕[Iron powder]

鉄粉は高溶石速度で溶接能率を訓るためや、良好な再ア
ーク性を得るために添加されろものである。35%を超
えると溶も速度や再アーク性は維持されるが、スラグ量
か不足し、またスラグの被包性かIハなわれてビード形
状か悪くなる。
Iron powder is added to improve welding efficiency at high lava speeds and to obtain good re-arc properties. If it exceeds 35%, the melting speed and re-arcing properties are maintained, but the amount of slag becomes insufficient, and the encapsulation of the slag deteriorates, resulting in poor bead shape.

(実 施 例) 第1表に示す各種組成の被覆剤に水ガラスを添加12て
湿式混合を行な−〕た後、CO,07%、sio、02
%、 Mn O,49%、P O,012%、50.0
08?tl。
(Example) After adding water glass to the coating materials having various compositions shown in Table 1 and performing wet mixing, CO, 07%, sio, 02
%, MnO, 49%, PO, 012%, 50.0
08? tl.

NO,0015%から成る直径4mmX400酔長の炭
素鋼心線IIs Z 3523)に通常の押出]2式塗
装機により被覆外径か64〜1になるように塗装置〜で
、最高温度400℃で乾燥を行ない、被覆アーク溶接棒
を作製して、各溶接棒について、プライマ塗布鋼板に対
する溶接作業性試験、耐ビット試験、耐ブローホール試
験および耐割れ性試験を行なった。
NO.0015% carbon steel core wire IIs Z 3523) with a diameter of 4 mm and an angle of 400 mm was coated using a 2-type coating machine at a maximum temperature of 400°C. After drying, coated arc welding rods were prepared, and each welding rod was subjected to a welding workability test on a primer-coated steel plate, a bit resistance test, a blowhole resistance test, and a crack resistance test.

溶接作業性試験、耐ビット試験、耐ブローホール性およ
び耐割れ性試験は下記の方法で試験を行なった。
Welding workability tests, bit resistance tests, blowhole resistance and cracking resistance tests were conducted using the following methods.

[溶接作業性試験] 板厚12.7mmの5M−50B鋼をT型に組立て立向
上進溶接(電流150A )および水平すみ肉溶接(電
流170A )を行な−〕た。
[Welding workability test] A 5M-50B steel plate having a thickness of 12.7 mm was assembled into a T shape, and vertical advancement welding (current 150 A) and horizontal fillet welding (current 170 A) were performed.

評価基準は従来のCaC0−CaF2を主成分とする低
水素系被覆アーク溶接棒に比べ、溶滴移行状態、アーク
の安定性、スラグはくり性なとの溶接作業性が良好なも
のを○印、あまりかわらないものをX印とした。
The evaluation criteria is that the welding workability in terms of droplet transfer state, arc stability, and slag removal property is better than that of conventional low-hydrogen coated arc welding rods mainly composed of CaC0-CaF2. , Those that do not change much are marked with an X.

[耐ピッ!・、耐ブローホール試験1 5M−50B鋼に膜厚が約30節になるようにウォッシ
ュプライマを塗布し、T型に組立てて、手で水平ずみ肉
溶接を行なった。
[Resistance pips!・Blowhole resistance test 1 Wash primer was applied to 5M-50B steel so that the film thickness was about 30 knots, assembled into a T shape, and horizontal welding was performed by hand.

耐ブローホール性についてはNK鋼船規則M &=によ
り評価(7,10%以下のものを○印良好、10%以下
のものをX印とした。
The blowhole resistance was evaluated according to the NK Steel Ship Regulations M&= (7.10% or less was marked ○, and 10% or less was marked X.

耐ビット性についてはビ・−ド全長に渡ってま−〕たく
発1. Lなか、ったものをO印良好、1個以上発生]
7たものをX印としまた。
Regarding bit resistance, the entire length of the bead is thoroughly exposed.1. O mark is good for items in L, 1 or more occurred]
7. Mark the item with an X.

[耐割れ性試験] 板厚25Illllの5M−50B鋼を用いて、JIS
 Z 3157のU型溶接割れ試験により評価しまた。
[Crack resistance test] JIS
Also evaluated by Z 3157 U-type weld cracking test.

従来のCa CO−Ca F 2を主成分4セする低水
素系波覆アーク溶接棒と耐割れ性か同等のものを○印良
好、劣るものをX印と17だ。これらの結果を第1表に
示す。なお○印は良好、X印は不良を示す。
Those with good cracking resistance or equivalent to the conventional low-hydrogen type wave-covered arc welding rods mainly composed of Ca CO - Ca F 2 are marked with an ○ mark, and those with poor cracking resistance are marked with an X mark and 17. These results are shown in Table 1. Note that the mark ○ indicates good quality and the mark X indicates poor quality.

[拡散性水素量試験] JIS Z 311gにおいて、拡散性水素n1試験を
ffスクロを去にて実施した。
[Diffusible Hydrogen Amount Test] In JIS Z 311g, a diffusible hydrogen n1 test was conducted with the ff screen removed.

第1表においτB−8〜B−23は比較例、B1〜B−
7は本発明の実施例である。
In Table 1, τB-8 to B-23 are comparative examples, B1 to B-
7 is an example of the present invention.

この試験の結果、以下に示す如く考察される。The results of this test are discussed as shown below.

B−1〜B−7は本発明の要件を満たす低水素系被覆−
アーク溶接棒を用いた場合で、全判定項目とも良好であ
る。
B-1 to B-7 are low hydrogen coatings that meet the requirements of the present invention.
When using an arc welding rod, all criteria were good.

B−8はマイカか少なく、ビットを発生すると共に溶接
作業性かトロツブ移行して、アンダーカッ]・を生じ、
ビード形状も悪くなった。
B-8 has less mica, which generates bits and causes welding workability to trottle, resulting in undercuts.
The bead shape also deteriorated.

B−9はタルクが多く、拡散性水素量が増加し。B-9 has a large amount of talc and an increased amount of diffusible hydrogen.

た。また耐割れ性も劣った。B−10はマイカとタルク
か少なく、ビットを発生すると共にアークが荒くなり、
Tンダーカットを生1六また耐ブロホール性も劣化jま
た。
Ta. The cracking resistance was also poor. B-10 has less mica and talc, generates bits and has a rough arc.
When T-undercut is used, its blowhole resistance also deteriorates.

B−11はマイカとタルクが多く、溶接作業性は良好で
あるか、拡散性水素量が増加j、た。また耐割れ性も劣
った。
B-11 contained a large amount of mica and talc, and had good welding workability and an increased amount of diffusible hydrogen. The cracking resistance was also poor.

B−12はルチールが′、1〉なく、スラグkが不足し
、アーク不安定で、ビード形状が悪くなった。
B-12 had no rutile ',1>, insufficient slag k, unstable arc, and poor bead shape.

B−13はルチールか多く、スラグの流動性が増大1−
2ずぎ、ビード形状を悪<17、棒焼1月こよる耐ブロ
ーポ〜 ルやアンダ−カッ[・が牛した。
B-13 has a lot of rutile, which increases the fluidity of the slag1-
2 times, the bead shape was bad < 17, and it was resistant to blow polls and undercuts.

B−14は炭酸石灰が少なく、ガス発生剤の効四か不十
分でビットやブローホールが発生I5た。
B-14 had less lime carbonate, and the effectiveness of the gas generating agent was insufficient, resulting in bits and blowholes.

B−15は炭酸石灰か多く、アーI−かあらくなリスバ
ッタの発生が多く、アンダーカットが生し、ビード形状
が悪くなった。
B-15 had a lot of lime carbonate, a lot of rough squirrel grass was generated, undercuts were formed, and the bead shape was poor.

B−16は蛍石が少なく、ビットやブローホールが発生
した。
B-16 had less fluorite, and bits and blowholes occurred.

B−17は蛍石が多く、溶接作業性が悪く、特にアーク
状態が不安定となり、スラグはくりか劣化iJ:。
B-17 has a lot of fluorite, which makes welding workability poor, especially the arc condition becomes unstable, and the slag flakes and deteriorates iJ:.

B−18はFe−Mnか少なく、脱酸不足によるビット
やブローホールが発生するさ共にアークの強さおよび広
がりが措なわれてビー ド形状が悪くな っ 1.:。
B-18 has less Fe-Mn, which causes bits and blowholes due to insufficient deoxidation, and the strength and spread of the arc are reduced, resulting in poor bead shape.1. :.

B−19はFe−Mnが多く、脱酸過剰となってビット
が発生ずると共に溶接金属が硬化し、耐割れが劣化する
B-19 contains a large amount of Fe-Mn, and is excessively deoxidized, causing bits to form, hardening the weld metal, and deteriorating crack resistance.

B−20は珪砂が少なく、スラグ量および粘性か不足1
〜、ビード形状が悪くなる。
B-20 has less silica sand, and the amount of slag and viscosity are insufficient.
~, the bead shape deteriorates.

B−21は珪砂が多く、スラグの粘性か苦しく増12、
ビットが発生(2、被覆筒か深くなりアーク状態が不安
定で、ビード形状か悪くなる。
B-21 has a lot of silica sand, and the viscosity of the slag increases 12,
Bits occur (2. The coating tube becomes deeper, the arc condition becomes unstable, and the bead shape becomes worse.

B−22は有機物か多く、アークの吹付けが強く、アー
ク不安定となり、またスパッタも多く発生し1ビード形
状も悪くなった。
B-22 had a large amount of organic matter, the arc spray was strong, the arc was unstable, a lot of spatter was generated, and the shape of each bead was poor.

B−23は鉄粉か多く、スラグ量が不足し、ビード形状
か悪い。
B-23 had too much iron powder, insufficient slag amount, and poor bead shape.

(発明の効果) 本発明は被覆剤を構成する配合成分の種類を特定すると
共に、各成分の配合割合を特定範囲に設定することによ
り、ピッl−の発生が皆無で耐ブローホール性、耐割れ
性および溶接作業性の良好な低水素系被覆アーク溶接環
を提供するものである。
(Effects of the Invention) The present invention specifies the types of components that make up the coating material and sets the blending ratio of each component within a specific range. The present invention provides a low-hydrogen coated arc welding ring with good crackability and welding workability.

かく(7て、本発明の溶接棒を用いる二とによって、プ
ライマ塗装鋼板での優れた溶接作業性、耐ビット、耐ブ
ローホール性、耐割れ性が得られることになったのであ
り、高張力鋼材等を用いた溶接建造分野に寄与するとこ
ろは極めて大である。
(7) By using the welding rod of the present invention, excellent welding workability, bit resistance, blowhole resistance, and cracking resistance can be obtained on primer-coated steel sheets, and high tensile strength The contribution to the field of welded construction using steel materials is extremely large.

Claims (1)

【特許請求の範囲】[Claims] マイカ又はタルクの少なくとも1種を4〜10重量%(
以下%で表わす)、ルチール35〜62%、炭酸石灰9
〜30%、蛍石1〜8%、Fe−Mn3〜18%、珪砂
1〜15%、有機物2%以下、および鉄粉35%以下を
含み、残部水ガラスから成る被覆剤を鋼心線に被覆した
ことを特徴とする低水素系被覆アーク溶接棒。
4 to 10% by weight of at least one of mica or talc (
(hereinafter expressed in %), rutile 35-62%, carbonate lime 9
~30% fluorite, 1~8% Fe-Mn, 3~18% Fe-Mn, 1~15% silica sand, 2% or less organic matter, and 35% or less iron powder, with the balance water glass on the steel core wire. A low hydrogen-based coated arc welding rod characterized by being coated.
JP18715890A 1990-07-17 1990-07-17 Low hydrogen coated arc welding rod Expired - Lifetime JP2716848B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18715890A JP2716848B2 (en) 1990-07-17 1990-07-17 Low hydrogen coated arc welding rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18715890A JP2716848B2 (en) 1990-07-17 1990-07-17 Low hydrogen coated arc welding rod

Publications (2)

Publication Number Publication Date
JPH0475796A true JPH0475796A (en) 1992-03-10
JP2716848B2 JP2716848B2 (en) 1998-02-18

Family

ID=16201145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18715890A Expired - Lifetime JP2716848B2 (en) 1990-07-17 1990-07-17 Low hydrogen coated arc welding rod

Country Status (1)

Country Link
JP (1) JP2716848B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464714B1 (en) * 2001-05-25 2005-01-06 가부시끼가이샤 도꾸야마 A process for preparing a flocculant for water treatment
US7666916B2 (en) 2003-07-25 2010-02-23 Keiichiro Asaoka Flocculant, manufacturing method therefor, and flocculation method using the flocculant
CN111200098A (en) * 2020-01-08 2020-05-26 深圳市力电电池有限公司 Button battery pin and welding method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464714B1 (en) * 2001-05-25 2005-01-06 가부시끼가이샤 도꾸야마 A process for preparing a flocculant for water treatment
US7666916B2 (en) 2003-07-25 2010-02-23 Keiichiro Asaoka Flocculant, manufacturing method therefor, and flocculation method using the flocculant
CN111200098A (en) * 2020-01-08 2020-05-26 深圳市力电电池有限公司 Button battery pin and welding method thereof

Also Published As

Publication number Publication date
JP2716848B2 (en) 1998-02-18

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