JPH01249297A - Cr-contained coated electrode - Google Patents
Cr-contained coated electrodeInfo
- Publication number
- JPH01249297A JPH01249297A JP7457488A JP7457488A JPH01249297A JP H01249297 A JPH01249297 A JP H01249297A JP 7457488 A JP7457488 A JP 7457488A JP 7457488 A JP7457488 A JP 7457488A JP H01249297 A JPH01249297 A JP H01249297A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- core wire
- fume
- contained
- coating 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 claims abstract description 70
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 35
- 239000003517 fume Substances 0.000 abstract description 19
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 8
- 239000010935 stainless steel Substances 0.000 abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 8
- 229910000990 Ni alloy Inorganic materials 0.000 abstract description 5
- 235000019353 potassium silicate Nutrition 0.000 abstract description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003496 welding fume Substances 0.000 description 13
- 239000011734 sodium Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- -1 nuclear Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004993 emission spectroscopy Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000001095 magnesium carbonate 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
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- VASIZKWUTCETSD-UHFFFAOYSA-N manganese(II) oxide Inorganic materials [Mn]=O VASIZKWUTCETSD-UHFFFAOYSA-N 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 238000009423 ventilation Methods 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
本発明は含Ｃｒ被覆アーク溶接棒に係るものであり、詳
しくはステンレス鋼や高Ｘｉ合金の溶接において可溶性
Ｃｒの溶接ヒユーム発生が抑制された被覆アーク溶接棒
に関わる。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a Cr-containing coated arc welding rod, and more specifically to a coated arc welding rod that suppresses the generation of soluble Cr welding fumes during welding of stainless steel and high-Xi alloys. Related to welding rods.
従来の技術
本発明は含Ｃｒ被覆アーク溶接棒の改良に係るものであ
る。含Ｃｒ被覆アーク溶接棒にはステンレス鋼系および
高ニツケル合金系の溶接棒などがあるが、使用対象とな
っているステンレス鋼および高ニッケル合金は耐食性、
耐酸化性、耐熱性および低温靭性などに優れており、こ
れら合金同志の接合、低温靭性に優れた５〜９％Ｎｉの
極低温用のフェライト系低合金鋼の溶接、あるいはステ
ンレス鋼および高ニー２ケル合金と低合金フェライト鋼
との異材接合など、その適用の対象となっている合金の
種類が多い。BACKGROUND OF THE INVENTION The present invention relates to an improvement of a Cr-containing coated arc welding rod. Cr-containing arc welding rods include stainless steel and high nickel alloy welding rods, but the stainless steel and high nickel alloy used are corrosion resistant,
It has excellent oxidation resistance, heat resistance, and low-temperature toughness, and can be used for joining these alloys together, welding 5-9% Ni ferritic low-alloy steel for cryogenic use with excellent low-temperature toughness, or stainless steel and high-temperature toughness. It can be applied to many types of alloys, such as dissimilar metal joining between 2Kel alloy and low-alloy ferritic steel.
他方、産業別には石油化学、ｍ維、原子力、化工機およ
び低温貯槽の各分野で広く採用されており、今後も含Ｃ
ｒ被覆アーク溶接棒の需要が拡大するものと予想されて
いる。On the other hand, by industry, it has been widely adopted in the petrochemical, textile, nuclear, chemical machinery, and low-temperature storage tank fields, and will continue to be used in the future as well.
Demand for r-coated arc welding rods is expected to increase.
上述のように含Ｃｒ被覆アーク溶接線は各産業分野でそ
の優れた特質を生かして数多く使用されているが、溶接
中にヒユームを発生するものであり、ヒユーム中には有
害性があるとされている水に口ｆ溶性のＣｒが数％含ま
れていることが確認されている。As mentioned above, Cr-containing arc welding wire is widely used in various industrial fields due to its excellent properties, but it generates fume during welding, and fume is said to be harmful. It has been confirmed that the water contained in the water contains several percent of mouth-soluble Cr.
現在、作業環境改善の立場から、環境中のヒユーム量を
規制することが望まれ、例えばＷＥＳ９００４において
はヒユーム量の規制として５ｍｇ／ｍ’以ドとなってい
る。Currently, from the standpoint of improving the working environment, it is desired to regulate the amount of hume in the environment, and for example, in WES9004, the amount of hume is regulated to 5 mg/m' or less.
最近、含Ｃｒ被覆アーク溶接棒から発生するヒュート中
には前述したごとく、有害性があるとされている水に可
溶性のＣｒが数％含まれていることを考慮して、国内外
において作業環境中のヒユーム量の規制のｆａｒ検討が
なされており、１量ｇ／ 、、１以下の規制値が提案さ
れている。Recently, in consideration of the fact that the fumes generated from Cr-containing arc welding rods contain several percent of water-soluble Cr, which is considered to be harmful, as mentioned above, work environment Consideration has been given to regulating the amount of fume in the air, and a regulation value of 1 g/g/, 1 or less has been proposed.
作業環境改善方法としては、その環境を許容濃度以下に
管理することが重要であり、−船釣にはまず換気を良く
することであって、局部排気、外気の導入、防じんマス
クの着用などが行なわれ成果を−にげているが、含Ｃｒ
被覆アーク溶接棒から発生するヒユーム中の特に有害成
分とされている木に可溶性のＧｒを減少させることが最
も重要であると考えられる。As a way to improve the working environment, it is important to manage the environment to below the permissible concentration. - When fishing on a boat, the first thing to do is to improve ventilation, such as local exhaust, bringing in outside air, and wearing a dust mask. Although it has been carried out and the results have not been achieved, Cr-containing
It is considered that the most important thing is to reduce the wood-soluble Gr, which is considered to be a particularly harmful component in the fume generated from coated arc welding rods.
発明が解決しようとする課題
本発明は以−にのような問題点を解決すべくなされたも
のであって、その目的とするところは、ステンレス鋼お
よび高ニッケル合金等の溶接において、溶接材料の面か
ら作業環境の改善を可使とし、しかもその溶接継手部の
性能や溶接作業性も良好な含Ｃｒ被覆アーク溶接棒の提
供にある。Problems to be Solved by the Invention The present invention has been made to solve the following problems, and its purpose is to improve the quality of welding materials when welding stainless steel, high nickel alloys, etc. It is an object of the present invention to provide a Cr-containing coated arc welding rod that can be used to improve the working environment in terms of its use, and has good welding joint performance and welding workability.
課題を解決するための手段
そこで本発明者らは含Ｃｒ被覆アーク溶接棒が発生する
ヒユーム中の可溶性Ｃｒ量を減少させるべく種々な角度
から研究した結果、主に心線へ被覆剤を固着させるため
に使用する水ガラス中のに２Ｏ＋Ｎａ２Ｏｉを１％以下
に制限する方法（特開昭５２−１１４４４７）とは異な
る方法を見出した。Means for Solving the Problem The present inventors conducted research from various angles in order to reduce the amount of soluble Cr in the fume generated by Cr-containing coated arc welding rods, and as a result, they mainly focused on fixing the coating material to the core wire. We have found a method different from the method of limiting the amount of 2O+Na2Oi in the water glass used for this purpose to 1% or less (Japanese Patent Application Laid-Open No. 114447/1983).
即ち、溶接時に心線や被覆剤中のＣｒの酸化がヒユーム
中のＣｒ量に影響をおよぼすため、その酸化を抑制させ
、また固着剤、塗装性およびアークの安定性などを目的
として使用する水ガラス、マイカおよびチタン酸カリな
どに含まれるＮａ２Ｏ、Ｋ、０量とともにＮａ２Ｏ／（
Ｎａ２Ｏ ＋ Ｋ ２Ｏ）ｃｙ）重量化を適正範囲にす
ることにより、ヒユーム中の可溶性Ｃｒ量を減少させる
という全く新しい知見が得られた。That is, during welding, the oxidation of Cr in the core wire and coating material affects the amount of Cr in the fume, so water is used to suppress oxidation, and also to serve as a bonding agent, paintability, and arc stability. Na2O/(
A completely new finding was obtained that the amount of soluble Cr in the hume can be reduced by adjusting the weight (Na2O + K2O)cy) to an appropriate range.
本発明は以」−のような知見によってなされたものであ
り、その要旨とするところは、心線中に１０〜２７％の
Ｇｒを含有し、心線または被覆剤中にＳｉ、Ａ２および
Ｔｉの１種または２種以上の合計が心線東ｒ番（比で１
〜５％含有し、被覆剤中のＮａとＫＴ＆分をその酸化物
である（Ｎａｎｏ、Ｋ２Ｏ）に換算して（Ｎａ２Ｏ＋に
、Ｏ）が１％を超える３％以下、さらにＮａ、０／（Ｎ
ａ、０ ＋ Ｋ ２Ｏ）の比は０．５〜１．０で、かつ
必要に応じて添加するＣｒが１０％以下であることを特
徴とする含Ｃｒ被覆アーク溶接棒にある。The present invention was made based on the following knowledge, and its gist is that the core wire contains 10 to 27% Gr, and the core wire or coating material contains Si, A2, and Ti. The total of one or more types of core wire East r number (ratio: 1
~5%, Na and KT& in the coating material are converted into their oxides (Nano, K2O), and (Na2O+, O) exceeds 1% and 3% or less, and Na, 0/( N
The Cr-containing coated arc welding rod has a ratio of 0.5 to 1.0 (a, 0 + K2O) and 10% or less of Cr added as necessary.
なおここで汀う心＆１屯量比とは次式の関係で示される
ものを指し、かつ同式中の被覆剤配合比とは被覆剤全重
湯に耐する添加原料の配合比を意味し、さらに被覆率と
は溶接棒全重着中で被覆剤東賃の占める割合を意味する
。In addition, the core & 1 volume ratio here refers to the relationship shown by the following formula, and the coating agent compounding ratio in the same formula means the compounding ratio of additive raw materials that can withstand the coating agent's full heavy hot water. Furthermore, the coverage ratio means the proportion of the coating material in the total weight of the welding rod.
心線及び被覆剤成分の心線東ｌｊ比 以下に本発明を作用と共に詳細に説明する。Core wire east lj ratio of core wire and coating material components The present invention will be explained in detail below along with its operation.
作用
まず１本発明溶接棒と母材との組み合せによって得られ
る溶接金属の耐食性、耐摩耗性、機械的性質等の諸性能
を確保するために必要な合金剤としてのＯｒは、溶接時
の酸化消耗を極力抑える事により、溶接ヒユーム中の再
溶接Ｃｒを抑制出来る。Function First, Or is an alloying agent necessary to ensure various performances such as corrosion resistance, wear resistance, and mechanical properties of the weld metal obtained by combining the welding rod of the present invention and the base metal. By minimizing wear and tear, rewelding Cr in the welding fume can be suppressed.
その添加方法は、大部分を心線中からとし、被覆剤中か
らは微量な成分調整程度にとどめる事が望ましい。As for the method of adding it, it is preferable to add most of it to the core wire, and only add a small amount to the coating material.
しかし、心線中から大部分のＣｒを添加した場合におい
ても、その添加量が１０％を超えた場合は、さらに本発
明におけるその他の方法を用いて、溶接ヒユーム中の可
溶性Ｃｒ量奢抑制する惑星があるため、本発明溶接棒の
心線中のＯｒには下限値を１０％とし、ｌ−限（１は現
在実用化されている含Ｃｒ被覆アーク溶接棒の装造可能
な範囲内である２７％とした。However, even when most of the Cr is added to the core wire, if the amount added exceeds 10%, the amount of soluble Cr in the welding fume may be suppressed by using other methods of the present invention. Because of the existence of planets, the lower limit of Or in the core wire of the welding rod of the present invention is set at 10%, and the l-limit (1 is within the range that can be installed with Cr-containing arc welding rods currently in practical use). It was set at 27%.
必要に応じぞ被覆剤における合金剤としてのＯｒは、心
線に添加する場合よりも酸化しやすいため、添加しない
方が良く、その大部分を心線中から添加するものの、微
量な成分調整を必要とする場合は、被覆剤からの添加で
対応する方が容易である。従って、被覆中にＣｒ添加の
必要な場合、その量はヒユーム中の可溶性Ｃｒ−１にお
よぼす影響が小さく、しかも微量成分調整が可能な範囲
である０、１〜ｌＯ％に制限する。If necessary, Or as an alloying agent in the coating material is more likely to oxidize than when added to the core wire, so it is better not to add it.Although most of it is added from the core wire, it is possible to adjust the composition in small amounts. If necessary, it is easier to add it from the coating material. Therefore, when it is necessary to add Cr during coating, the amount is limited to 0.1 to 10%, which has a small effect on soluble Cr-1 in the fume and allows adjustment of trace components.
本発明の特徴の一つは、溶接時におけるＣｒの酸化を抑
制することにあり、Ｓｉ、 ＡＱおよびＴｉの脱酸剤元
素の添加が最も重要となる。これら脱酸剤元素は心線ま
たは被覆剤中に心線重量比で１％以り添加することによ
りヒユーム中のＣｒｌが減少する。その添加量は多いほ
ど効果的であるが、５％を超えると溶接金属中にこれら
脱酸剤元素が過剰に入り、溶接金属の耐われ性を劣化さ
せたり、スラグの流動性等の溶接作業性が劣化する。従
って１〜５％に制限する。One of the features of the present invention is to suppress oxidation of Cr during welding, and the addition of deoxidizer elements such as Si, AQ, and Ti is most important. By adding these deoxidizing elements to the core wire or coating material in an amount of 1% or more by weight of the core wire, Crl in the fume is reduced. The larger the amount added, the more effective it is, but if it exceeds 5%, these deoxidizer elements will enter the weld metal excessively, leading to deterioration of the durability of the weld metal and problems such as slag fluidity during welding work. Sexuality deteriorates. Therefore, it is limited to 1 to 5%.
また本発明の他の特徴の一つに溶接時に発生するヒユー
ム量を減少させ、かつ、（ヒユーム中の木に可溶性のＣ
ｒ穢／ヒユーム中の全Ｃｒ ｉｌ）の比を減少させるこ
とにあり、被覆剤中のＮａ、 ＫＱ分が少ないほどヒユ
ーム発生量が少なくなる。しかし、Ｎａ、 Ｋ成分がそ
の酸化物（Ｎａｎｏ ＋ Ｋ ７０）に換算して１％以
下になると被覆剤の固着性が劣化し、溶接棒としての実
用化が困難となる。また被覆剤中のＮａｎｏ ／（Ｎａ
ｎｏ ＋ Ｋ ２Ｏ）の比を０．５％以−ヒにするとす
る。従って、被覆剤中のＮａ、 Ｋ成分をその酸化物（
Ｎａ７０、Ｋ２Ｏ）に換算して（Ｎａ７０ ＋ Ｋ ７
０）が１％を超える３％以下にし、かつＮａｎｏ ／
（Ｎａ７０ ＋ Ｋ ２Ｏ ）比を０．５〜１に制限す
る。Another feature of the present invention is to reduce the amount of fume generated during welding, and to reduce the amount of fume generated during welding.
The aim is to reduce the ratio of dirt/total Cr in the fume, and the less Na and KQ in the coating, the less the amount of fume generated. However, when the Na and K components are reduced to 1% or less in terms of their oxides (Nano + K 70), the adhesion of the coating deteriorates, making it difficult to put it to practical use as a welding rod. In addition, Nano/(Na
Suppose that the ratio of no + K2O) is 0.5% or more. Therefore, the Na and K components in the coating are replaced by their oxides (
Na70, K2O) converted to (Na70 + K7
0) exceeds 1% to 3% or less, and Nano/
Limit the (Na70 + K2O) ratio to 0.5-1.
その他、本発明溶接棒の合金成分として機械的性質、耐
食性、耐熱性および耐摩耗性等を特徴とする特性に応じ
て、心線または被覆剤の一方または両方に心線重量比で
０．５％以下のＣ，１０％以下ｃ７）Ｎｎ、１５％以下
のＮｏ、５％以下のＮｂ、２．５％以下のＣｕ、８０％
以下のＮｉ等を適宜選択して１挿具」二含有することが
できる。In addition, depending on the characteristics of the alloy components of the welding rod of the present invention, such as mechanical properties, corrosion resistance, heat resistance, wear resistance, etc., one or both of the core wire and coating material may have a core wire weight ratio of 0.5 % or less C, 10% or less c7) Nn, 15% or less No, 5% or less Nb, 2.5% or less Cu, 80%
The following Ni etc. can be appropriately selected and contained.
また、スラグ形成剤として被包性、流動状態。It also has encapsulating properties and fluidity as a slag forming agent.
ばくり性を良好にするためやアークの安定性、スパッタ
の減少、ビード形状の改善等の良好な溶接作業性を確保
する目的に応じて、ＣａＣＯ３、ＭｇＣＯ３等の炭酸塩
やＴｉＯ２、ＺｒＯ２，５ｉ０２、ＡＱ２Ｏ３ 、 Ｇ
ａ０１Ｍｇ０ 、 ＭｎＯ、ＦｅＯ、Ｆｅ２Ｏ３、Ｂｉ
２Ｏ３等の金属酸化物、ＣａＦ２ 、ＭｇＦ２、ＭＦ３
等の金属弗化物等を含有することができる。Carbonates such as CaCO3, MgCO3, TiO2, ZrO2, 5i02, etc. ,AQ2O3,G
a01Mg0, MnO, FeO, Fe2O3, Bi
Metal oxides such as 2O3, CaF2, MgF2, MF3
It can contain metal fluorides such as.
以ヒのように本発明による含Ｃｒ被覆アーク溶接棒は大
部分のＣｒ量を心線中に添加し、脱酸剤としてＡＱ、
Ｓｉ、Ｔｉの適量添加により、溶接中のＣｒの酸化を著
しく抑制することと、被覆剤中のＮａ、に成分の量およ
びその構成割合を規制することとの相乗効果によりヒユ
ーム中に含まれる水に可溶性のＣｒ量が著しく減少する
。As described below, in the Cr-containing coated arc welding rod of the present invention, most of the Cr content is added to the core wire, and AQ and AQ are added as deoxidizers.
The addition of appropriate amounts of Si and Ti significantly suppresses the oxidation of Cr during welding, and the synergistic effect of regulating the amount and composition ratio of Na in the coating material reduces the amount of water contained in the fume. The amount of soluble Cr decreases significantly.
ここで溶接棒の製造法について言及すると、たとえば含
Ｃｒ心線および被覆剤粉末を準備し、被覆剤粉末を水ガ
ラス（石上酸カリ水溶液、石上酸ソーダ水溶液）のバイ
ンダーで混和してから、心線へ被覆し、 ２Ｏ０〜４５
０℃で約１時間以上の乾燥、焼成をする。Here, referring to the manufacturing method of welding rods, for example, a Cr-containing core wire and a coating powder are prepared, the coating powder is mixed with a binder of water glass (aqueous solution of potassium stone acid, aqueous solution of sodium stone acid), and then the core wire is prepared. Coat the wire, 2O0~45
Dry and bake at 0°C for about 1 hour or more.
以下に木発すＪの実施例について述べる。An example of J made by Kihatsu will be described below.
実施例
第１表に供試心線の化学成分を示す。また第２表に供試
心線と被覆剤の組合せによる被覆アーク溶接棒の組成を
示す。また第３表には使用した母材の化学成分を示す。Table 1 shows the chemical composition of the sample core wire. Furthermore, Table 2 shows the composition of coated arc welding rods based on combinations of test core wires and coating materials. Table 3 also shows the chemical components of the base materials used.
第４表に第２表の被覆アーク溶接棒と第３表の母材を用
いて行った溶接ヒユーム中のＣｒｌと可溶性Ｃｒ ｒ？
ｃの分析試験結果と溶接作業性試験結果と被覆剤の固着
性試験結果を示す。Table 4 shows the Crl and soluble Cr in welding fumes performed using the coated arc welding rods in Table 2 and the base metals in Table 3.
The analytical test results, welding workability test results, and coating adhesion test results of c are shown.
なお、溶接ヒユームの分析１よ、ＪＩＳ Ｚ ３９３０
（被覆アーク溶接棒の全ヒユームは測定法）に準拠し
てろ紙に溶接ヒユームを捕集した後、その溶接ヒユーム
を溶液発光分光分析法で行った。In addition, welding fume analysis 1, JIS Z 3930
After collecting the welding fume on a filter paper according to the method for measuring the total fume of a coated arc welding rod, the welding fume was subjected to solution emission spectroscopy.
溶接ヒユームの採取と溶接作業性調査における溶接条件
は、棒径４．０＋ｍφの溶接棒を用い、溶接ｉｉ ｉ
１４０Ａ（ＡＣ）、アーク電圧２２−２８Ｖ、溶接速度
２５ｃｍ／ｗｉｎでモ板りに丁向姿勢でビートを置いた
。The welding conditions for collecting welding fumes and investigating welding workability were to use a welding rod with a rod diameter of 4.0 + mφ, and to perform welding ii
The beat was placed facing the board at 140 A (AC), an arc voltage of 22-28 V, and a welding speed of 25 cm/win.
次に、被１η剤の固着性は、溶接中に心線から被覆剤が
剥離して脱落しやすく溶接に支障があったものを「不良
」とＩ定し、このような現象が全く認められなかったも
のを「良好」と判定した。Next, regarding the adhesion of the 1η agent, cases in which the coating material peeled off from the core wire during welding and easily fell off, hindering welding, were determined to be "poor." Those that did not meet the criteria were judged to be "good."
第２表と第４表の被覆アーク溶接棒記号Ｎｏ１〜７は比
較例であり、Ｎｏ８〜２２は本発明である。Covered arc welding rods Nos. 1 to 7 in Tables 2 and 4 are comparative examples, and Nos. 8 to 22 are those of the present invention.
第４表の結果からＩＪらかなように、
Ｎｏｌの溶接棒は心線中のＣｒ量が１０％未満であるた
め、溶接ヒユーム中の可溶性Ｃｒ量は充分低く、本発明
の特別な制約である心線中あるいは被覆剤中からＳｉ、
Ａｉ、Ｔｉを添加する方法等の必要がない。As is clear from the results in Table 4, the No.1 welding rod has a Cr content in the core wire of less than 10%, so the soluble Cr content in the welding fume is sufficiently low, which is a special limitation of the present invention. Si from the core wire or coating material,
There is no need for a method of adding Ai or Ti.
Ｎｏ２の溶接棒は１０％を超えるＣｒ量の心線を使用し
、しかも被覆中のＣｒ硬が１０％を超えるため溶接ヒユ
ーム中の可溶性Ｃｒは過多である。Welding rod No. 2 uses a core wire with a Cr content exceeding 10%, and the Cr hardness in the coating exceeds 10%, so the soluble Cr in the welding fume is excessive.
Ｎｏ３の溶接棒は心線と被覆剤中のＳｉ、 ＡＭ、Ｔｉ
の合計添加植が１％未満のため、溶接ヒユーＪ、中の【
１溶性Ｃｒ埴は充分抑制出来ない。No. 3 welding rod has Si, AM, and Ti in the core wire and coating material.
Because the total amount of additives is less than 1%, welding hue J,
1-soluble Cr clay cannot be sufficiently suppressed.
Ｎｏ４の溶接棒は心線゛と被覆剤中のＳｉ、 ＡＱ、
Ｔｉの合計添加ａが５％を超えているため、スラブの波
動状ｙルトやビード外観等の溶接作業性が悪い。No. 4 welding rod has a core wire and Si in the coating, AQ,
Since the total amount of Ti added exceeds 5%, welding workability such as wave-shaped yelting and bead appearance of the slab is poor.
Ｎｏ５の溶接棒は被覆剤中ｃ７）Ｎａ、 Ｋｒ＆分を（
Ｎａ、Ｏ。No. 5 welding rod has c7) Na, Kr & min (c7) in the coating material.
Na, O.
の固着性が悪い。has poor adhesion.
Ｎｏ６の溶接棒は被覆剤中）Ｎａ、ＫＪ＆、分を（Ｎａ
７０、Ｋ２Ｏ）に換算してその和が３％を超えるため溶
接ヒユーム中の可溶性Ｃｒｉが多い。No. 6 welding rod contains (Na), KJ&, (Na) in the coating material.
70, K2O), the sum of which exceeds 3%, so there is a large amount of soluble Cri in the welding fume.
Ｎｏ７の溶接棒は被覆剤中のＮａ、 Ｋ成分を（Ｎａ７
０、Ｋ２Ｏ）に換算して、Ｎａ７０ ／（Ｎａ２Ｏ ＋
Ｋ ２Ｏ）の比が０．５未満であるため、溶接ヒユー
ム中の可溶性Ｃｒ ｊ４が多い。No. 7 welding rod removes the Na and K components in the coating material (Na7
0, K2O), Na70 / (Na2O +
Since the ratio of K 2 O) is less than 0.5, there is more soluble Cr j4 in the weld fume.
これに対して本発明に係るＮｏ８〜２２の溶接棒は。On the other hand, welding rods No. 8 to 22 according to the present invention.
いずれも溶接ヒユーム中の可溶性Ｃｒ５１が少なく、溶
接作業性と被覆剤の固着性が良好であった。In all cases, soluble Cr51 in the welding fume was low, and welding workability and coating material adhesion were good.
（以下余白）
発明の効果
以１−に説明した通り、本発明における含Ｏｒ被覆アー
ク溶接林は、心線及び被覆剤から添加する合金剤として
のＣｒが溶接中の酸化により、ヒユーム化するのを抑制
するため被覆剤中からの添加を制限しながら、その大部
分を心線中から添加させ、しかもＳｉ、 Ｍ、 Ｔｉを
適量添加する方法と同時に、ＮａとＫｉ＆分の添加量や
その添加比率を適量範囲にする方法を併用する事により
これらの相乗効果から、溶接ヒユーム中の可溶性Ｃｒ
５１が少なく、溶接作業性や被覆剤の固着性も良好であ
り、ステンレス鋼ヤ高Ｎｉ合金鋼等の溶接において作業
環境の改善が出来る。(The following is a blank space) Effects of the Invention As explained in 1-, the Or-containing arc welding forest of the present invention prevents Cr as an alloying agent added from the core wire and coating material from turning into fumes due to oxidation during welding. In order to suppress the amount of addition from the coating material, most of it is added from the core wire, and at the same time, Si, M, and Ti are added in appropriate amounts. By combining methods to adjust the ratio within an appropriate range, the synergistic effect of these methods will reduce the amount of soluble Cr in the welding fume.
51, the welding workability and adhesion of the coating material are also good, and the working environment can be improved when welding stainless steel, high Ni alloy steel, etc.
Claims (2)
ｒを含有し、さらに心線または被覆剤中にＳｉ、Ａｌ及
びＴｉの１種または２種以上の合計が心線重量比で１〜
５％で、しかも被覆剤中のＮａとに成分をその酸化物の
Ｎａ＿２ＯとＫ＿２Ｏに換算して（Ｎａ＿２Ｏ＋Ｋ＿２
Ｏ）が１％を超える３％以下、さらにＮａ＿２Ｏ／（Ｎ
ａ＿２Ｏ＋Ｋ＿２Ｏ）の比が０．５〜１．０であること
を特徴とする含Ｃｒ被覆アーク溶接棒。(1) 10 to 27% (weight%, same below) C in the core wire
r, and the total of one or more of Si, Al, and Ti in the core wire or coating material is 1 to 10% by weight ratio of the core wire.
5%, and the Na content in the coating material is converted into its oxides Na_2O and K_2O (Na_2O+K_2
O) is more than 1% and 3% or less, and Na_2O/(N
A Cr-containing coated arc welding rod, characterized in that the ratio of a_2O+K_2O) is 0.5 to 1.0.
１）に記載の含Ｃｒ被覆アーク溶鋼棒。(2) Claim in which the Cr content in the coating is 0.1 to 10% (
1) The Cr-containing arc-molten steel rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63074574A JP2577714B2 (en) | 1988-03-30 | 1988-03-30 | Cr containing arc welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63074574A JP2577714B2 (en) | 1988-03-30 | 1988-03-30 | Cr containing arc welding rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01249297A true JPH01249297A (en) | 1989-10-04 |
| JP2577714B2 JP2577714B2 (en) | 1997-02-05 |
Family
ID=13551097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63074574A Expired - Lifetime JP2577714B2 (en) | 1988-03-30 | 1988-03-30 | Cr containing arc welding rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2577714B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3266560A1 (en) | 2016-07-05 | 2018-01-10 | Ductil S.A. | Multi-coated electrode for welding stainless steel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4522338B2 (en) * | 2005-07-28 | 2010-08-11 | 中国電力株式会社 | Flow control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514505A (en) * | 1974-07-01 | 1976-01-14 | Sanyo Electric Co | Tansojudodendokino kidosochi |
| JPS5219129A (en) * | 1975-08-04 | 1977-02-14 | Int Nickel Co | Welding of ageehardening stainless steel |
| JPS5326749A (en) * | 1976-08-24 | 1978-03-13 | Int Nickel Co | Electrode coated with corrosionnresisting stainless steel |
| JPS5634395A (en) * | 1979-08-27 | 1981-04-06 | Hitachi Ltd | Washing method of two tank type washing machine |
-
1988
- 1988-03-30 JP JP63074574A patent/JP2577714B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514505A (en) * | 1974-07-01 | 1976-01-14 | Sanyo Electric Co | Tansojudodendokino kidosochi |
| JPS5219129A (en) * | 1975-08-04 | 1977-02-14 | Int Nickel Co | Welding of ageehardening stainless steel |
| JPS5326749A (en) * | 1976-08-24 | 1978-03-13 | Int Nickel Co | Electrode coated with corrosionnresisting stainless steel |
| JPS5634395A (en) * | 1979-08-27 | 1981-04-06 | Hitachi Ltd | Washing method of two tank type washing machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3266560A1 (en) | 2016-07-05 | 2018-01-10 | Ductil S.A. | Multi-coated electrode for welding stainless steel |
| WO2018007364A1 (en) | 2016-07-05 | 2018-01-11 | Ductil Sa | Multi-coated electrode for welding stainless steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2577714B2 (en) | 1997-02-05 |
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