JPS63207495A - Coated electrode for carbon steel - Google Patents
Coated electrode for carbon steelInfo
- Publication number
- JPS63207495A JPS63207495A JP3725387A JP3725387A JPS63207495A JP S63207495 A JPS63207495 A JP S63207495A JP 3725387 A JP3725387 A JP 3725387A JP 3725387 A JP3725387 A JP 3725387A JP S63207495 A JPS63207495 A JP S63207495A
- Authority
- JP
- Japan
- Prior art keywords
- coating material
- carbon steel
- arc welding
- welding rod
- welding
- 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.)
- Pending
Links
- 229910000975 Carbon steel Inorganic materials 0.000 title claims abstract description 22
- 239000010962 carbon steel Substances 0.000 title claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 59
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 31
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- 102000004169 proteins and genes Human genes 0.000 claims abstract description 19
- 108090000623 proteins and genes Proteins 0.000 claims abstract description 19
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 7
- 239000004571 lime Substances 0.000 claims abstract description 7
- 229920002472 Starch Polymers 0.000 claims abstract description 5
- 239000008107 starch Substances 0.000 claims abstract description 5
- 235000019698 starch Nutrition 0.000 claims abstract description 5
- 240000003183 Manihot esculenta Species 0.000 claims abstract description 4
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011368 organic material Substances 0.000 claims 1
- 239000011324 bead Substances 0.000 abstract description 15
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 7
- 230000001788 irregular Effects 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 206010013975 Dyspnoeas Diseases 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001327 Rimmed steel Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000006748 manganese carbonate Nutrition 0.000 description 1
- 239000011656 manganese carbonate Substances 0.000 description 1
- 229940093474 manganese carbonate Drugs 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 description 1
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
- -1 zirconant Chemical compound 0.000 description 1
Landscapes
- 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、炭素鋼用被覆アーク溶接棒に関し、溶接作業
性特にアークの安定性が良好で、スパッタが少なく、耐
ブローホール性が良好であり、しかも臭気性の少ない炭
素鋼用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 coated arc welding rod for carbon steel, which has good welding workability, particularly arc stability, little spatter, and good blowhole resistance. This invention relates to a coated arc welding rod for carbon steel that has a low odor.
［従来技術］
従来、−膜構造用圧延鋼板や溶接構造用圧延鋼板などの
、いわゆる炭素鋼の溶接においては炭素鋼用被覆アーク
溶接体が使用されており、当該炭素鋼用被覆アーク溶接
棒は、鋼心線１例えばリムド鋼心線などの外周に被覆剤
を塗布して形成されるものである。[Prior Art] Conventionally, a coated arc welding body for carbon steel has been used in the welding of so-called carbon steel, such as rolled steel plates for membrane structures and rolled steel plates for welded structures, and the coated arc welding rod for carbon steel has been used. It is formed by applying a coating agent to the outer periphery of the steel core wire 1, for example, a rimmed steel core wire.
特に鋼心線に塗布する被覆剤の効用は、作業性の良い溶
接棒を得ることおよび溶接金属の機械的性質を良好にす
るためのものである。In particular, the effectiveness of the coating applied to the steel core wire is to obtain a welding rod with good workability and to improve the mechanical properties of the weld metal.
当該被覆剤は、その主成分原料の系統により例えばイル
ミナイト系、ライムチタニア系、チタニア系あるいは鉄
粉酸化鉄系などの種類に分類され、主成分原料にさまざ
まな被覆剤原料を混合して使用されている。The coating materials are classified into types such as illuminite type, lime titania type, titania type, iron powder iron oxide type, etc. depending on the type of the main component raw material, and various coating material raw materials are used by mixing the main component raw material. has been done.
［発明が解決しようとする問題点］
しかしながら、」二記炭素鋼用被覆アーク溶接棒を用い
て、−膜構造用圧延鋼板や溶接構造用圧延鋼板などのい
わゆる炭素鋼を溶接する際には、下記のような問題があ
る。[Problems to be Solved by the Invention] However, when welding so-called carbon steels such as rolled steel plates for membrane structures and rolled steel plates for welded structures using the coated arc welding rod for carbon steel described in Section 2, There are problems as below.
すなわち、従来の炭素鋼用被覆アーク溶接棒を使用した
溶接においては、
■溶接時にアンダーカットが発生しやすく溶接作業性が
悪くなる。That is, in welding using conventional coated arc welding rods for carbon steel, (1) undercuts are likely to occur during welding, resulting in poor welding workability;
■ど−ド波形が不揃いであり溶接作業性が悪くなる。■Double waveforms are irregular, resulting in poor welding workability.
■また溶接継手部においてはブローホールが発生しＸ線
特性が悪い。■Also, blowholes occur in welded joints and the X-ray characteristics are poor.
■スラグ巻込が発生しＸ線特性が悪い。■Slag entrainment occurs and X-ray characteristics are poor.
■融合不良などが発生しやすくＸ線特性が悪い。■Problems with poor X-ray characteristics, such as poor fusion.
■さらには、溶接時に発生する臭いが強く環境衛生面に
おいて問題がある。■Furthermore, the odor generated during welding is strong and poses a problem in terms of environmental hygiene.
上記問題の改善のために特に被覆剤原料として有機物は
効果的であり、溶接時において空気中の酸素および窒素
が溶融金属に入ることを防ぐためのガス発生剤として又
アーク安定性などの溶接作業性の向上の目的で使用され
ており、特に優れた有機物として澱粉、デキストリン、
セルロースが特開昭５９−４９９６、特開昭６０−１３
７５９５号で開示されている。しかし、未だ前記問題の
解決にいたっていない。Organic substances are particularly effective as raw materials for coating materials to improve the above problems, and can also be used as gas generating agents to prevent oxygen and nitrogen in the air from entering the molten metal during welding, and to improve arc stability and other welding operations. Starch, dextrin,
Cellulose was published in JP-A-59-4996 and JP-A-60-13.
No. 7595. However, the above problem has not yet been solved.
本発明者らは、イルミナイト系、ライムチタニア系、チ
タニア系あるいは鉄粉酸化鉄系などの種類に分類される
各タイプの炭素鋼用被覆アーク溶接体に関して、それぞ
れの特徴を損なうことなく耐アンダーカット、ビード波
形が揃っているなどの溶接作業性および溶接継手部のＸ
線特性が良好で、臭気の少ない各タイプの炭素鋼用被覆
アーク溶接棒を提供するために被覆剤原料について研究
を重ねた。The present inventors have developed coating arc welded bodies for carbon steel of each type classified into types such as illuminite type, lime titania type, titania type, and iron powder iron oxide type, without impairing their characteristics. Welding workability such as uniform cuts and bead waveforms, and X of welded joints
In order to provide coated arc welding rods for carbon steel of various types with good wire characteristics and low odor, we have conducted repeated research on raw materials for coating materials.
その結果、本発明においては、タンパク質および窒素の
含有量の低い有機物を添加することが上記の目的の達成
に有効であることを見い出した。As a result, in the present invention, it has been found that adding organic matter with low protein and nitrogen content is effective in achieving the above objective.
［問題解決のための手段］
本発明は、以上のような事情に基づいてなされたもので
あって、タンパク質を０．０１〜０．２０％（重早％；
以下同じ）、窒素を０．００１６〜０．０３２％含有す
る有機物を、鋼心線外周に塗布する被覆剤中に、該被覆
剤の全組着に対し１〜１５％となるよう配合したことを
特徴とする炭素鋼用被覆アーク溶接棒に関するものであ
る。[Means for solving the problem] The present invention has been made based on the above circumstances, and includes protein at a concentration of 0.01 to 0.20% (heaviness %;
The same applies hereafter), an organic substance containing 0.0016 to 0.032% nitrogen is blended into the coating material applied to the outer periphery of the steel core wire so that the amount is 1 to 15% based on the total assembly of the coating material. The present invention relates to a coated arc welding rod for carbon steel characterized by the following.
本発明において必須の有機物としては、タンパク質を０
．０１％〜０．２０％（重量％；以下同じ）、窒素をｏ
、ｏｏｔｅ〜０．０３２％含有するものであるが、特に
、タピオカ澱粉、じゃがいも澱粉が好ましく使用される
がこれらに限定されるものではない。In the present invention, proteins are included as essential organic substances.
．． 01% to 0.20% (weight%; the same applies hereinafter), nitrogen
, oote to 0.032%, and tapioca starch and potato starch are particularly preferably used, but are not limited to these.
又１本発明に使用する被覆剤中の他の原料としては、有
機物の他に、特に限定はしないが、例えば、石灰石、ド
ロマイト、炭酸マンガン 、マグネサイト、ホタル石、
砂鉄、イルミナイト、赤鉄鉱、ルチール、チタン白、二
酸化マンガン、ジルコンサント、フェロ・マンガン、フ
ェロ・シリコン、マンガン、ニッケル、フェロ・モリブ
デン、鉄粉、タルクなどが載げられる。In addition to organic substances, other raw materials in the coating material used in the present invention are not particularly limited, but include, for example, limestone, dolomite, manganese carbonate, magnesite, fluorite,
Iron sand, illuminite, hematite, rutile, white titanium, manganese dioxide, zirconant, ferro-manganese, ferro-silicon, manganese, nickel, ferro-molybdenum, iron powder, and talc are listed.
本発明に使用される鋼心線としては特に限定されるもの
ではないが例えばリムド鋼心線などが載げられる。The steel core wire used in the present invention is not particularly limited, but includes, for example, a rimmed steel core wire.
［作用］
以下に本発明に係る有機物およびタンパク質、窒素の作
用及び含有量設定の根拠について説明する。[Effect] The effects of organic matter, protein, and nitrogen according to the present invention and the basis for setting the content will be explained below.
（有機物）
有機物は、ガス発生剤として又アークの安定性向上の手
段として不可欠のものであり、イルミナイト系、ライム
チタニア系、チタニア系あるいは鉄粉酸化鉄系などの種
類に分類される各タイプの炭素鋼用被覆アーク溶接棒の
被覆剤の原料として１〜１５％添加する必要がある。(Organic substances) Organic substances are essential as gas generating agents and as a means of improving arc stability, and are classified into various types such as illuminite type, lime titania type, titania type, and iron powder iron oxide type. It is necessary to add 1 to 15% as a raw material for the coating material of coated arc welding rods for carbon steel.
１％未満ではアークが弱くなるなどの溶接作業性が低下
し、ガス発生量が低下してシールド不足となりその結果
Ｘ線特性が著しく劣化する。If it is less than 1%, welding workability deteriorates such as weakening of the arc, the amount of gas generated decreases, and shielding becomes insufficient, resulting in significant deterioration of X-ray characteristics.
１５％を越えるとアークが弱くなり、クレータの広がり
が小ざ〈ビードも不揃いとなると同時にスラグ量が不足
してスラグの被りが悪くなり、その結果ビード外観が顕
著に悪化する。If it exceeds 15%, the arc becomes weak, the crater spread becomes small, the bead becomes irregular, and at the same time, the amount of slag becomes insufficient, resulting in poor slag coverage, and as a result, the appearance of the bead becomes noticeably worse.
なお、本発明において用いる有機物は後述するように所
定量のタンパク質および窒素を含有するものであるから
、有機物の総量が１５％の範囲内で他の有機物を併用し
てもよい。たとえば、未発明の有機物ｌＯ％、本発明以
外の有機物０〜５％等である。Note that since the organic substance used in the present invention contains a predetermined amount of protein and nitrogen as described later, other organic substances may be used in combination within the range of the total amount of organic substance of 15%. For example, 10% of uninvented organic matter, 0 to 5% of organic matter other than the present invention, etc.
（タンパク質、窒素）
タンパク質を０．０１〜０．２０％窒素を０．００１６
〜０．０３２％含有する有機物が必要である。(Protein, Nitrogen) Protein 0.01-0.20% Nitrogen 0.0016
~0.032% organic content is required.
有機物成分の一つであるタンパク質には窒素が１６％含
有されており、タンパク質０．０１％未満窒素０．００
１６％未満では、アークが弱くなりクレータの広がりが
小さくビードも不揃いとなり、その結果ビード外観が顕
著に悪化する。又溶は込み不良、スラグ巻き込みが発生
し、いわゆるＸ！＋１特性が顕著に劣化する。Protein, which is one of the organic components, contains 16% nitrogen, and protein, which is less than 0.01% nitrogen, contains 0.00% nitrogen.
If it is less than 16%, the arc becomes weak, the spread of the crater is small, and the bead becomes irregular, resulting in a marked deterioration in the appearance of the bead. In addition, poor melt penetration and slag entrainment occur, resulting in so-called "X!" +1 characteristics deteriorate significantly.
一方タンパク質が（１２％を越え、窒素が０．０３２％
を越えると、アークは増大するがアーク不安定となりス
パッタが増加しアンダーカットが生じクレータも垂れや
すくビードの凹凸も激しくなり、その結果ビード外観が
著しく悪化する。又ブローホールも発生しＸ線特性が劣
化する。しかも、溶接時タンパク質から発生する臭気の
影響により作業者の溶接集中力が緩慢になり、溶接者に
よっては息苦しくなったり目の充血をおこすなど作業環
境の悪化をきたす。On the other hand, protein (over 12%, nitrogen 0.032%
If it exceeds this value, the arc increases, but the arc becomes unstable, spatter increases, undercuts occur, craters tend to sag, the bead becomes more uneven, and as a result, the bead appearance deteriorates significantly. Blowholes also occur and the X-ray characteristics deteriorate. Furthermore, the odor generated from proteins during welding slows down the worker's ability to concentrate on welding, leading to a deterioration of the working environment, such as making some welders have difficulty breathing and causing bloodshot eyes.
なお、本発明に定める有機物の添加効果をより顕著に発
揮させる上で、被覆アーク溶接棒の被覆率を２０〜５０
％、被覆剤中の全水分量を０．３％とすることが望まし
い、但し、被覆剤中の全水分量は３．０％以内にするこ
とがスパッタ等の溶接作業性の面で好ましい。In addition, in order to more clearly exhibit the effect of adding organic substances defined in the present invention, the coverage rate of the coated arc welding rod should be set at 20 to 50.
%, and the total moisture content in the coating material is desirably 0.3%. However, it is preferable to keep the total moisture content in the coating material within 3.0% from the viewpoint of welding workability such as sputtering.
［発明の実施例］
第１表に示す各種被覆剤の配合原料の中の有機物が含有
するタンパク質および窒素を第２表、第３表、第４表、
第５表のごとく配合した被覆剤をイルミナイト系、ライ
ムチタニア系、チタニア系については鋼心線（４，Ｏφ
Ｘ４００Ｊｌ）の外周に塗布して被覆アーク溶接棒を製
造した。[Examples of the invention] Tables 2, 3, 4 show the protein and nitrogen contained in the organic substances in the raw materials for the various coating materials shown in Table 1.
For illuminite type, lime titania type, and titania type coating materials mixed as shown in Table 5, steel core wire (4, Oφ
A coated arc welding rod was manufactured by coating the outer periphery of a 400JL (X400Jl).
一方鉄粉酸化鉄については、鋼心線（６，０φＸ５５０
Ｊｌｊ）の外周に塗布して被覆アーク溶接棒を製造した
。On the other hand, for iron powder iron oxide, steel core wire (6,0φX550
Jlj) to produce a coated arc welding rod.
得られた各タイプの溶接棒を用いてＪＩＳ ５Ｓ−４
１１９ｔ Ｘ３００ｗ Ｘ５００ｕ（７）試験板を使用
し、イルミナイト系、ライムチタニア系、チタニア系の
被覆アーク溶接棒については、立向突合せ溶接法にて溶
接を行ない、又、鉄粉酸化鉄系の被覆アーク溶接棒につ
いては、下向突合せ溶接法にて溶接を行ない溶接作業性
、Ｘ線特性、環境性すなわち臭気について調査を行なっ
た。Using each type of welding rod obtained, JIS 5S-4
Using 119t x 300w x 500u (7) test plates, welding was performed using the vertical butt welding method for illuminite-based, lime-titania-based, and titania-based coated arc welding rods; Regarding the arc welding rod, welding was performed using the downward butt welding method, and welding workability, X-ray characteristics, and environmental performance, that is, odor, were investigated.
これらの調査結果は第２表、第３表、第４表、第５表に
示すごと＜Ｎｏ、１〜７がイルミナイト系であり、Ｎ０
０８〜１４がライムチタニア系であり、Ｎｏ 、１５〜
２１がチタニア系でありＮｏ。These investigation results are shown in Tables 2, 3, 4, and 5. <No, 1 to 7 are illuminite type, and NO
08~14 are lime titania series, No. 15~
21 is titania type and No.
２２〜２８が鉄粉酸化鉄系である 上記の調査結果により次のごとく考察できる。22 to 28 are iron powder iron oxide type Based on the above survey results, the following considerations can be made.
第２表、第３表、第４表、第５表において、Ｎｏ。In Tables 2, 3, 4, and 5, No.
１．８，１５．２２は本実施例に対する比較例を示すも
のであり、有機物中におけるタンパク質と窒素の含有量
がそれぞれ０．０１％未満であり、０．００１６％未満
であって溶接時におけるアークが弱く不安定となりクレ
ータの広がりが小さくビード波形が不揃いとなる。1.8 and 15.22 show comparative examples to this example, in which the protein and nitrogen contents in the organic matter were less than 0.01% and less than 0.0016%, respectively, and the The arc becomes weak and unstable, the crater spreads small, and the bead waveform becomes irregular.
又、Ｎｏ、１．８．１５では溶は込み不良が発生しＸ線
性能が悪化する。Further, in No. 1.8.15, poor penetration occurs and the X-ray performance deteriorates.
Ｎｏ、２２においては、スラグ巻き込み融合不良が発生
するためにＸ線性能が著しく悪化する。In No. 22, the X-ray performance deteriorates significantly due to slag entrainment and poor fusion.
次に第２．３，４．５表において、Ｎｏ 、 ６ 。Next, in Tables 2.3 and 4.5, No. 6.
１３．２０．２７は有機物中におけるタンパク質と窒素
の含有量が、それぞれ０．２０％。13.20.27 has a protein and nitrogen content of 0.20% each in organic matter.
０．０３２％を越える場合を示す比較例であっり、Ｎｏ
、６．１３．２０においては溶接時におけるアークは強
いがアークが不安定となり、アンダーカットが発生し、
スパッタも増える。又、ビードの凹凸が目立つようにな
リピート外観が悪化する。さらにブローホールが発生し
Ｘ線特性が悪化し、又、臭気も強くなり溶接環境が悪化
し溶接集中力が緩慢になる。This is a comparative example showing a case where the amount exceeds 0.032%, and No.
, 6.13.20, the arc during welding is strong, but the arc becomes unstable and undercut occurs.
Spatter also increases. Moreover, the unevenness of the bead becomes noticeable and the repeat appearance deteriorates. Furthermore, blowholes occur, which deteriorates the X-ray characteristics, and the odor becomes strong, which deteriorates the welding environment and slows down the welding concentration.
Ｎｏ、２においては、アークは強いがアーク不安定とな
リピートの波形が不揃いとなりビード外観が悪化する。In No. 2, the arc is strong but the arc is unstable, the repeat waveform is irregular, and the bead appearance deteriorates.
Ｘ線特性、臭気に関しては、前記Ｎｏ、６．１３．２０
と同様な傾向を示す。Regarding X-ray characteristics and odor, the above No. 6.13.20
shows a similar tendency.
さらに、Ｎｏ、７．１４，２１．２８は本実施例に対す
る比較例であって、前記Ｎｏ、６．１３゜２０．２７に
比較して有機物中におけるタンパク質および窒素含有量
がさらに多い例を示しており、アークが大幅に増大しア
ーク不安定となり、溶接作業性が著しく悪化しスパッタ
が増加しアンダーカットが生じビード波形の不揃いおよ
び凹凸も激しくなり、ビード外観が著しく悪化する。又
ブローホールも発生しＸ線特性が悪化する。しかも、溶
接時タンパク質から発生する臭気の影響により作業者の
溶接集中力が緩慢になり、溶接者によっては息苦しくな
ったり目の充血をおこすなど作業環境の悪化をきたす。Furthermore, No. 7.14, 21.28 is a comparative example to this example, and shows an example in which the protein and nitrogen content in the organic matter is higher than that of No. 6.13゜20.27. As a result, the arc increases significantly and the arc becomes unstable, welding workability deteriorates significantly, spatter increases, undercuts occur, the bead waveform becomes irregular and uneven, and the bead appearance deteriorates significantly. Blowholes also occur and the X-ray characteristics deteriorate. Furthermore, the odor generated from proteins during welding slows down the worker's ability to concentrate on welding, leading to a deterioration of the working environment, such as making some welders have difficulty breathing and causing bloodshot eyes.
以上示した比較例に対してＮｏ、２〜５，９〜１２．１
６〜１９．２３〜２６は、本発明に規定する要件を満足
する実施例であって、アークが安定し、アンダーカット
が生じなくビード波形も揃いスパッタもなくクレータの
広がりクレータの状態も良好で、いわゆる溶接作業性が
良好であり、しかもブローホール、溶は込み不良などの
欠陥がなくいわゆるＸ線特性に優れ、製品品質を一段と
向上せしめる。又溶接における臭気も減少し溶接環境が
改善され、溶接作業詣率も向上する。No, 2-5, 9-12.1 for the comparative examples shown above
6 to 19.23 to 26 are examples that satisfy the requirements stipulated in the present invention, and the arc is stable, no undercut occurs, the bead waveform is uniform, there is no spatter, the crater spreads, and the condition of the crater is good. , so-called welding workability is good, there are no defects such as blowholes and poor penetration, and so-called X-ray properties are excellent, further improving product quality. Also, the odor during welding is reduced, the welding environment is improved, and the welding work attendance rate is also improved.
なお、第６表にテストに使用した被覆アーク溶接棒の被
覆率および被覆剤中の全水分量を被覆のタイプ別に示す
。Table 6 shows the coverage ratio of the coated arc welding rods used in the test and the total water content in the coating material by type of coating.
なお、本発明においては、特に限定されるものではない
が有機物がタピオカ澱粉であるとき効果がより顕著にな
る。In addition, in the present invention, the effect becomes more remarkable when the organic substance is tapioca starch, although it is not particularly limited.
［発明の効果］
以上説明したように、本発明によれば
■溶接時にアンダーカットが生ぜず、溶接作業性が良く
なる。[Effects of the Invention] As explained above, according to the present invention (1) undercuts do not occur during welding, and welding workability is improved.
■ビード波形が揃い溶接作業性が良くなる。■The bead waveform is uniform and welding workability is improved.
■溶接継手部においてはブローホールが発生せずＸ線特
性が良くなる。■Blowholes do not occur in welded joints and X-ray characteristics are improved.
（■スラグ巻き込みがなくなり、Ｘ線特性が良くなる。(■ Slag entrainment is eliminated and X-ray characteristics are improved.
■融合不良の発生がなくＸ線特性が良くなる。■There is no occurrence of fusion defects and the X-ray characteristics are improved.
■溶接時に発生する臭気が減少して作業環境の改善とな
る。■The odor generated during welding is reduced, improving the working environment.
第６表 −へＡ１−Table 6 -to A1-
Claims (8)
下同じ）、窒素を０．００１６〜０．０３２％含有する
有機物を、鋼心線外周に塗布する被覆剤中に、該被覆剤
の全重量に対し１〜１５％となるよう配合したことを特
徴とする炭素鋼用被覆アーク溶接棒。(1) An organic material containing 0.01 to 0.20% protein (weight %; the same applies hereinafter) and 0.0016 to 0.032% nitrogen is added to the coating material to be applied to the outer periphery of the steel core wire. A coated arc welding rod for carbon steel, characterized in that the agent is blended in an amount of 1 to 15% based on the total weight of the agent.
範囲第１項記載の炭素鋼用被覆アーク溶接棒。(2) The coated arc welding rod for carbon steel according to claim 1, wherein the coating material is an illuminite coating material.
の範囲第１項記載の炭素鋼用被覆アーク溶接棒。(3) The coated arc welding rod for carbon steel according to claim 1, wherein the coating material is a lime titania-based coating material.
第１項記載の炭素鋼用被覆アーク溶接棒。(4) The coated arc welding rod for carbon steel according to claim 1, wherein the coating material is a titania-based coating material.
囲第１項記載の炭素鋼用被覆アーク溶接棒。(5) The coated arc welding rod for carbon steel according to claim 1, wherein the coating material is an iron powder iron oxide based coating material.
５％である特許請求の範囲第１項乃至第５項のいずれか
１項に記載の炭素鋼用被覆アーク溶接棒。(6) The coverage rate of the coating agent applied to the outer periphery of the steel core wire is 20 to 5.
5%, the coated arc welding rod for carbon steel according to any one of claims 1 to 5.
である特許請求の範囲第１項乃至第６項のいずれか１項
に記載の炭素鋼用被覆アーク溶接棒。(7) Total water content contained in the coating material is 0.3 to 3.0%
A coated arc welding rod for carbon steel according to any one of claims 1 to 6.
項乃至第７項のいずれか１項に記載の炭素鋼用被覆アー
ク溶接棒。(8) Claim 1 in which the organic substance is tapioca starch
The coated arc welding rod for carbon steel according to any one of items 7 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3725387A JPS63207495A (en) | 1987-02-20 | 1987-02-20 | Coated electrode for carbon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3725387A JPS63207495A (en) | 1987-02-20 | 1987-02-20 | Coated electrode for carbon steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63207495A true JPS63207495A (en) | 1988-08-26 |
Family
ID=12492479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3725387A Pending JPS63207495A (en) | 1987-02-20 | 1987-02-20 | Coated electrode for carbon steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63207495A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3689532A1 (en) * | 2019-02-04 | 2020-08-05 | Lincoln Global, Inc. | Coated welding wire |
-
1987
- 1987-02-20 JP JP3725387A patent/JPS63207495A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3689532A1 (en) * | 2019-02-04 | 2020-08-05 | Lincoln Global, Inc. | Coated welding wire |
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