JPH04266495A - Flux-cored wire for ni-based alloy welding - Google Patents
Flux-cored wire for ni-based alloy weldingInfo
- Publication number
- JPH04266495A JPH04266495A JP2490891A JP2490891A JPH04266495A JP H04266495 A JPH04266495 A JP H04266495A JP 2490891 A JP2490891 A JP 2490891A JP 2490891 A JP2490891 A JP 2490891A JP H04266495 A JPH04266495 A JP H04266495A
- Authority
- JP
- Japan
- Prior art keywords
- flux
- slag
- wire
- welding
- based alloy
- 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.)
- Withdrawn
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 20
- 239000000956 alloy Substances 0.000 title claims abstract description 20
- 238000003466 welding Methods 0.000 title abstract description 40
- 239000002893 slag Substances 0.000 claims abstract description 60
- 230000004907 flux Effects 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 150000001875 compounds Chemical class 0.000 claims abstract description 20
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 17
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 13
- 229910001512 metal fluoride Inorganic materials 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 229910052593 corundum Inorganic materials 0.000 claims description 9
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 229910052682 stishovite Inorganic materials 0.000 claims description 7
- 229910052905 tridymite Inorganic materials 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 230000004927 fusion Effects 0.000 abstract description 18
- 238000005336 cracking Methods 0.000 abstract description 10
- 239000010936 titanium Substances 0.000 abstract description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052814 silicon oxide Inorganic materials 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 20
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 18
- 239000011734 sodium Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 11
- 230000007547 defect Effects 0.000 description 10
- 239000011775 sodium fluoride Substances 0.000 description 9
- 235000013024 sodium fluoride Nutrition 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000005538 encapsulation Methods 0.000 description 7
- 235000010215 titanium dioxide Nutrition 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 3
- 238000009863 impact test Methods 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- -1 was O Inorganic materials 0.000 description 2
- 239000003496 welding fume Substances 0.000 description 2
- 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
- 229910011763 Li2 O Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 229910004074 SiF6 Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 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
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- RXCBCUJUGULOGC-UHFFFAOYSA-H dipotassium;tetrafluorotitanium;difluoride Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[Ti+4] RXCBCUJUGULOGC-UHFFFAOYSA-H 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- GROMGGTZECPEKN-UHFFFAOYSA-N sodium metatitanate Chemical compound [Na+].[Na+].[O-][Ti](=O)O[Ti](=O)O[Ti]([O-])=O GROMGGTZECPEKN-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- RLQWHDODQVOVKU-UHFFFAOYSA-N tetrapotassium;silicate Chemical compound [K+].[K+].[K+].[K+].[O-][Si]([O-])([O-])[O-] RLQWHDODQVOVKU-UHFFFAOYSA-N 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、原子炉や圧力容器など
に用いるＮｉ基合金のガスシールドアーク溶接用フラッ
クス入りワイヤに係り、さらに詳しくは８０％Ａｒ＋２
０％Ｃｏ２ のシールドガスを併用したアーク溶接にお
いて、スパッタ発生量やスラグ被包性及び剥離性などの
作業性が良好で、融合不良やスラグ巻込みが発生しにく
く、しかも延性、靭性、耐割れ性などの溶着金属性能に
も優れたＮｉ基合金溶接用フラックス入りワイヤに関す
る。[Industrial Application Field] The present invention relates to a flux-cored wire for gas-shielded arc welding of Ni-based alloys used in nuclear reactors, pressure vessels, etc., and more specifically, 80% Ar+2
In arc welding using 0% Co2 shielding gas, workability such as spatter generation, slag encapsulation and peelability is good, fusion failure and slag entrainment are less likely to occur, and ductility, toughness, and crack resistance are achieved. The present invention relates to a flux-cored wire for welding Ni-based alloys that has excellent weld metal performance such as properties.
【０００２】0002
【従来の技術】フラックス入りワイヤによるガスシール
ドアーク溶接は、被覆アーク溶接やＴＩＧ溶接に比較し
て作業能率が良く、年々適用鋼種も拡大しており、Ｎｉ
基合金の溶接においても、フラックス入りワイヤの開発
、改良が強く要望されるようになってきた。しかし、こ
の種のワイヤ設計に当たっては、その用途を十分考慮し
た上で溶接作業性や溶接部の融合不良などの欠陥防止は
もとより、耐食性及び低温、高温の機械的性質、耐割れ
性などへの配慮が特に必要になってくる。一方、特開昭
５９−２１２９２号公報に開示されているステンレス鋼
溶接用フラックス入りワイヤのフラックスはＳ，Ｂｉを
必須成分として、良好なスラグ剥離性を確保しており、
このようなフラックスをＮｉ基合金溶接用フラックス入
りワイヤに応用すると、良好な溶着金属性能が得られな
くなる。さらに特開昭６３−８０９９４号公報のガスシ
ールドアーク溶接用Ｎｉ基複合ワイヤは、フラックス中
のスラグ成分について十分な特定がなされていない。[Prior art] Gas-shielded arc welding using flux-cored wire has higher work efficiency than coated arc welding or TIG welding, and the number of applicable steel types is expanding year by year.
There has also been a strong demand for the development and improvement of flux-cored wires in the welding of base alloys. However, when designing this type of wire, it is necessary to fully consider the intended use, and not only to improve welding workability and prevent defects such as poor fusion of welds, but also to improve corrosion resistance, mechanical properties at low and high temperatures, crack resistance, etc. Special consideration will be required. On the other hand, the flux of the flux-cored wire for stainless steel welding disclosed in JP-A-59-21292 contains S and Bi as essential components to ensure good slag removability.
If such a flux is applied to a flux-cored wire for welding Ni-based alloys, good weld metal performance cannot be obtained. Furthermore, in the Ni-based composite wire for gas shielded arc welding disclosed in Japanese Patent Application Laid-Open No. 63-80994, the slag component in the flux has not been sufficiently specified.
【０００３】このようなフラックス入りワイヤでは良好
な溶接作業性を確保することが困難である。また、特開
昭６３−３６９９５号公報のインコネル合金溶接用フラ
ックス入りワイヤにおいてもフラックス成分の特定が不
十分であり、同号公報の実施例ワイヤでは溶接作業性な
ど良好な諸性能が得られない。しかも、従来のＮｉ基合
金用フラックス入りワイヤの多くは、溶着金属性能面を
考慮してシールドガスには不活性ガスの純Ａｒや８０％
Ａｒ＋２０％ＣＯ２ を用いており、これらのシールド
ガスはアークの安定性や集中性を良くする反面、アーク
吹付けは広がりのない弱いものとなる傾向があるため、
融合不良やスラグ巻込みの溶接欠陥の発生し易いという
問題があった。[0003] It is difficult to ensure good welding workability with such flux-cored wires. Furthermore, in the flux-cored wire for Inconel alloy welding disclosed in Japanese Unexamined Patent Publication No. 63-36995, the flux components are not sufficiently specified, and the example wire of the same publication cannot provide good performance such as welding workability. . Moreover, in many conventional flux-cored wires for Ni-based alloys, in consideration of the performance of welded metal, the shielding gas is pure Ar, an inert gas, or 80%
Ar + 20% CO2 is used, and while these shielding gases improve the stability and concentration of the arc, the arc spray tends to be weak without spreading.
There was a problem in that welding defects such as poor fusion and slag entrainment were likely to occur.
【０００４】0004
【発明が解決しようとする課題】本発明は、以上のよう
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、スパッタ発生量が少なく、スラグの被
包性や剥離性などの溶接作業性が良好で、融合不良やス
ラグ巻込みが発生しにくく、しかも延性、靭性、耐割れ
性などの溶着金属性能が優れたＮｉ基合金溶接用フラッ
クス入りワイヤの提供にある。[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned problems, and its purpose is to reduce the amount of spatter generated and improve the encapsulation and peeling of slag. To provide a flux-cored wire for welding a Ni-based alloy, which has good welding workability such as hardness, is less likely to cause poor fusion or slag entrainment, and has excellent weld metal performance such as ductility, toughness, and crack resistance.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、Ｎｉ基合
金用フラックス入りワイヤと８０％Ａｒ＋２０％ＣＯ２
のガスシールドアーク溶接において、スパッタ発生量
とスラグの被包性や剥離性を改善すると共に、融合不良
などの溶接欠陥を発生しにくくし、しかも延性、靭性、
耐割れ性などの優れた溶着金属性能の確保を目的として
、ワイヤ中のフラックス組成やフラックス充填率に関し
鋭意検討した。その結果、ＴｉＯ２ を主成分として若
干量のＡｌ２Ｏ３ とＳｉＯ２ を含有するフラックス
組成において、Ｎａ，Ｋ，Ｌｉの化合物であるＮａ２
Ｏ，Ｋ２ Ｏ，Ｌｉ２ Ｏ，Ｎａ２ ＣＯ３ ，Ｌｉ２
ＣＯ３ やＮａＦ，ＬｉＦなどの添加量やＮａＦ，Ｌ
ｉＦを含めた全金属弗化物添加量をＮａ，Ｋ，ＬｉやＦ
に換算した値で、それぞれ適正範囲に制御することによ
りスパッタ発生量やスラグ被包性及び剥離性の改善に有
効であることを見いだした。[Means for Solving the Problems] The present inventors have developed a flux-cored wire for Ni-based alloy and 80% Ar + 20% CO2.
In gas-shielded arc welding of
In order to ensure excellent weld metal performance such as crack resistance, we conducted extensive studies on the flux composition and flux filling rate in the wire. As a result, in a flux composition containing TiO2 as the main component and some amounts of Al2O3 and SiO2, Na2, which is a compound of Na, K, and Li, was
O, K2 O, Li2 O, Na2 CO3, Li2
Addition amount of CO3, NaF, LiF, etc., NaF, L
The total metal fluoride addition amount including iF is changed to Na, K, Li and F.
It has been found that controlling the respective values within appropriate ranges is effective in improving the amount of spatter generation, slag envelopment, and releasability.
【０００６】またこのようなフラックス組成からＳ，Ｂ
ｉの除去や脱酸剤として最も有効な金属Ｔｉを添加せし
めることにより、溶着金属の延性、靭性耐割れ性を大幅
に改善できるということが判明した。[0006] Also, from such a flux composition, S, B
It has been found that the ductility, toughness, and cracking resistance of the weld metal can be significantly improved by removing i and adding Ti, the most effective metal as a deoxidizing agent.
【０００７】さらに融合不良やスラグ巻込みの溶接欠陥
はワイヤのフラックス充填率やフラックス組成と関係あ
ることがわかった。即ち、ワイヤの充填率が高過ぎた場
合、アークの吹付け強さや広がりの点で大きな変化が見
られない割りには、ワイヤの溶着速度が増大する傾向が
ある。Furthermore, it has been found that welding defects such as poor fusion and slag entrainment are related to the flux filling rate of the wire and the flux composition. That is, when the filling rate of the wire is too high, the welding speed of the wire tends to increase, although there is no significant change in the blowing strength or spread of the arc.
【０００８】このため、アーク直下の溶融プールが広が
らないにもかかわらず、そこに移行する溶着金属やスラ
グ量が過多となって融合不良やスラグ巻込みを発生し易
くすることが判明した。さらに、これらの溶接欠陥のう
ち、スラグ巻込みは充填フラックスの溶融速度がワイヤ
外皮に比べて遅すぎた場合により発生し易くなる傾向が
認められた。従って、これらの溶接欠陥防止には、フラ
ックス充填率が過多とならないように制御しながら、溶
融し易いフラックス組成とすることが有効であるとの結
論を得た。For this reason, it has been found that although the molten pool directly under the arc does not expand, an excessive amount of weld metal and slag migrate there, making it easy to cause poor fusion and slag entrainment. Furthermore, among these welding defects, slag entrainment tends to occur more easily when the melting rate of the filling flux is too slow compared to the wire sheath. Therefore, it has been concluded that in order to prevent these welding defects, it is effective to control the flux filling rate so that it does not become excessive and to use a flux composition that is easy to melt.
【０００９】本発明は以上の知見に基づくものであって
、その要旨とするところは、Ｎｉ基合金からなる外皮の
内部に、ワイヤ全重量に対してフラックスを１０〜２３
％充填し、フラックス中にワイヤ全重量比でＴｉＯ２
を４〜１２％、Ａｌ２ Ｏ３ を０．１〜２％、ＳｉＯ
２ を０．１〜３％、Ｎａ，Ｋ，Ｌｉの化合物金属弗化
物をＮａ，Ｋ，Ｌｉに換算し、Ｎａを０．１〜２．０％
、Ｋを０．０１〜１．５％、Ｌｉを０．０６〜１．０％
、Ｎａ＋Ｋ＋Ｌｉを０．４〜２．４％、ＮａＦやＬｉＦ
を含む全金属弗化物をＦに換算して０．４〜１．５％、
Ｔｉを０．１〜１．９％、金属成分の合計を０．１〜１
７％、スラグ成分の合計を５．５〜１８％にしたことを
特徴とするＮｉ基合金溶接用フラックス入りワイヤにあ
る。The present invention is based on the above findings, and its gist is that the flux is added to the inside of the outer skin made of Ni-based alloy by 10 to 23% of the total weight of the wire.
% filling and total wire weight ratio in flux TiO2
4-12%, Al2O3 0.1-2%, SiO
2 to 0.1-3%, Na, K, Li compound metal fluoride converted to Na, K, Li, Na 0.1-2.0%
, K 0.01-1.5%, Li 0.06-1.0%
, Na+K+Li 0.4-2.4%, NaF or LiF
0.4 to 1.5% in terms of F of all metal fluorides including
Ti 0.1-1.9%, total metal components 0.1-1
7% and a total slag component of 5.5 to 18%.
【００１０】0010
【作用】まず、本発明のフラックス入りワイヤとは図１
（ａ）〜（ｄ）にその一例を示すような断面形状のワイ
ヤで、パイプあるいはフープからなる外皮１に充填フラ
ックス２を被包したものであり、同図（ｂ）〜（ｄ）の
ごとく継目３を有するもの、あるいは同図（ａ）に示す
ような継目のないものでも良い。外皮材としてはＮｉ基
合金を用いることにより、成分設計を容易にすることが
できる。本発明は以下の実験方法に基づくものである。[Operation] First, what is the flux-cored wire of the present invention?
It is a wire with a cross-sectional shape as shown in (a) to (d), an example of which is a wire in which a filling flux 2 is encapsulated in an outer skin 1 consisting of a pipe or hoop, as shown in (b) to (d) of the same figure. It may have a seam 3, or it may have a seam as shown in FIG. 3(a). By using a Ni-based alloy as the outer skin material, component design can be facilitated. The present invention is based on the following experimental method.
【００１１】まず、表１に示す化学成分のＮｉ−Ｃｒ系
及びＮｉ−Ｃｒ−Ｍｏ系インコネルのパイプまたはフー
プを外皮として用いて、図１に示すような断面形状でフ
ラックス組成の異なるＡＷＳ Ａ５．１４ＥＲＮｉＣ
ｒ−３、ＥＲＮｉＣｒＭｏ−３相当のワイヤ径１．２ｍ
ｍのフラックス入りワイヤを製造し、図２のような軟鋼
板上に試験ワイヤでバタリングして作製したＶ開先内部
を溶接電流；ＤＣ（＋）２００Ａ、電圧；３１Ｖ、速度
；２５〜３５ｃｍ／ｍｉｎの溶接条件で８０％Ａｒ＋２
０％ＣＯ２ ガスシールドアーク溶接を行い、各種ワイ
ヤのスパッタ発生量とスラグ被包性や剥離性などの溶接
作業性や融合不良、スラグ巻込みの欠陥の有無、高温割
れ発生の有無、溶着金属の引張及び衝撃試験による強度
、延性、靭性に影響を及ぼす要因と対策について検討し
た。First, using a pipe or hoop of Ni-Cr type and Ni-Cr-Mo type Inconel having the chemical composition shown in Table 1 as the outer skin, AWS A5. 14ERNiC
r-3, ERNiCrMo-3 equivalent wire diameter 1.2m
Welding current: DC (+) 200A, voltage: 31V, speed: 25-35cm/ 80% Ar+2 under welding conditions of min.
0% CO2 gas-shielded arc welding is performed to evaluate the amount of spatter generated by various wires, welding workability such as slag encapsulation and peelability, fusion failure, presence of slag entrainment defects, presence or absence of hot cracking, and the quality of deposited metal. We investigated the factors and countermeasures that affect strength, ductility, and toughness through tensile and impact tests.
【００１２】0012
【表１】[Table 1]
【００１３】なお、フラックス充填率の検討範囲は９〜
３０％とした。[0013] The study range of flux filling rate is from 9 to
It was set at 30%.
【００１４】本発明は以上の実験方法と検討結果に基づ
いてなされたものであり、本発明が規定した各種数値の
限定理由を以下に述べる。Ｎｉ基合金を外皮に用いたの
はフラックスが充填過多とならないように、フラックス
中からの合金添加量を抑制するためのものであり、溶着
金属成分の安定化にも効果がある。フラックスの充填率
下限を１０％としたのは、ワイヤ製造工程において安定
した充填率の確保を容易にするためであるが、上限の２
３％を超えると融合不良やスラグ巻込みの欠陥が発生し
易くなる。ＴｉＯ２ は均一で被包性の良いスラグを形
成すると共に、アーク状態の安定化にも効果があり、し
かも溶着金属性能に及ぼす影響は小さいのでスラグ形成
剤の主成分として最適である。しかし４％未満ではこれ
らの効果が十分発揮されず、１２％を超えるとワイヤ中
のスラグ成分が過多となって、スラグ巻込みが発生し易
くなる。原材料としては、ルチール、チタン白、チタン
酸カリ、チタン酸ソーダ、チタン酸カルシウムなどを用
いることができる。The present invention has been made based on the above experimental methods and study results, and the reasons for limiting the various numerical values defined by the present invention will be described below. The purpose of using a Ni-based alloy for the outer skin is to suppress the amount of alloy added to the flux so as not to overfill the flux, and is also effective in stabilizing the weld metal components. The reason why the lower limit of the flux filling rate is set to 10% is to make it easier to ensure a stable filling rate in the wire manufacturing process.
If it exceeds 3%, defects such as poor fusion and slag entrainment are likely to occur. TiO2 forms a uniform slag with good encapsulation properties, is effective in stabilizing the arc state, and has little effect on the performance of the deposited metal, so it is most suitable as the main component of the slag forming agent. However, if it is less than 4%, these effects will not be sufficiently exhibited, and if it exceeds 12%, the slag component in the wire will be too large, making it easy for slag inclusion to occur. As raw materials, rutile, titanium white, potassium titanate, sodium titanate, calcium titanate, etc. can be used.
【００１５】Ａｌ２ Ｏ３ はＴｉＯ２ を主成分とす
るスラグ形成剤の補助的な成分として添加し、フラック
スやスラグの融点を調整するために必要であり、溶融し
易いフラックスと流動性の良いスラグを形成する。この
ような添加効果は０．１％未満では得られず、２％を超
えると逆効果になる。原材料としてはＡｌ２ Ｏ３ 粉
末のアルミナやＳｉＯ２ など他成分の化合物としてカ
リ長石などが使用できる。[0015] Al2O3 is added as an auxiliary component to the slag forming agent whose main component is TiO2, and is necessary to adjust the melting point of flux and slag, forming easily meltable flux and slag with good fluidity. do. Such an effect cannot be obtained with an addition amount of less than 0.1%, and an opposite effect will occur if it exceeds 2%. As raw materials, alumina in the form of Al2O3 powder and potassium feldspar as a compound of other components such as SiO2 can be used.
【００１６】ＳｉＯ２ は前記のＡｌ２ Ｏ３ と同様
な効果があり、この効果はＡｌ２ Ｏ３ と併用するこ
とにより、さらに顕著となる。但し、ＳｉＯ２ はＴｉ
などの強脱酸性元素によって還元され易いので、添加し
過ぎると溶着金属中のＳｉが過量となって、延性、靭性
、耐割れ性に悪影響を及ぼす。従って、添加量は０．１
〜３％にする必要があり、原材料としては珪砂、カリ長
石、珪灰石、珪酸ナトリウム、珪酸カリウムなどを使用
できる。[0016] SiO2 has the same effect as the above-mentioned Al2O3, and this effect becomes even more remarkable when used in combination with Al2O3. However, SiO2 is Ti
Since Si is easily reduced by strong deoxidizing elements such as Si, if too much Si is added, the amount of Si in the weld metal will be excessive, which will adversely affect ductility, toughness, and cracking resistance. Therefore, the amount added is 0.1
3%, and raw materials such as silica sand, potassium feldspar, wollastonite, sodium silicate, and potassium silicate can be used.
【００１７】Ｎａ，Ｋ，Ｌｉの化合物はアークの安定性
を良好にし、スパッタ発生量を低減する。またワイヤ中
の充填フラックスを溶融し易くし、スラグの融点を下げ
流動性を良くするので、溶接部の融合不良、スラグ巻込
み防止やスラグの剥離性を良好にするのに有効な成分で
ある。このような効果の総てを発揮させるためには、Ｎ
ａ，Ｋ，Ｌｉの化合物をそれぞれ必須成分として複合添
加することが必要である。しかし、これらの成分が過量
になると溶接ヒュームが多発するため、添加量はＮａを
０．１〜２．０％、Ｋを０．０１〜１．５％、Ｌｉを０
．０６〜１．０％、Ｎａ＋Ｋ＋Ｌｉを０．４〜２．４％
にする。原材料は、Ｎａ化合物として炭酸ナトリウム、
ソーダガラス粉末、ソーダ長石、粉末及び水溶液状の珪
酸ソーダ、弗化ソーダなどを使用できる。Ｋ化合物とし
て炭酸カリウム、カリガラス粉末、カリ長石、粉末状ま
たは水溶液状の珪酸カリ、珪弗化カリ（Ｋ２ ＳｉＦ６
）、ジルコン弗化カリ（Ｋ２ ＺｒＦ６ ）、チタン
弗化カリ（Ｋ２ ＴｉＦ６ ）、弗化カリ（ＫＦ）など
を使用できる。Ｌｉ化合物として炭酸リチウム、リチウ
ムフラックス、弗化リチウムなどを使用できる。The compound of Na, K, and Li improves arc stability and reduces the amount of spatter generated. It also makes it easier to melt the flux filling in the wire, lowers the melting point of the slag, and improves fluidity, so it is an effective ingredient in preventing poor fusion in welds, preventing slag entrainment, and improving slag peelability. . In order to bring out all of these effects, N
It is necessary to add compounds a, K, and Li in combination as essential components. However, if these components are in excessive amounts, welding fumes will occur frequently, so the addition amounts are 0.1-2.0% Na, 0.01-1.5% K, and 0% Li.
．． 06~1.0%, Na+K+Li 0.4~2.4%
Make it. Raw materials include sodium carbonate as a Na compound,
Soda glass powder, soda feldspar, powdered and aqueous sodium silicate, sodium fluoride, and the like can be used. K compounds include potassium carbonate, potassium glass powder, potassium feldspar, powdered or aqueous potassium silicate, potassium silicofluoride (K2 SiF6
), potassium zircon fluoride (K2 ZrF6 ), potassium titanium fluoride (K2 TiF6 ), potassium fluoride (KF), etc. can be used. As the Li compound, lithium carbonate, lithium flux, lithium fluoride, etc. can be used.
【００１８】金属弗化物はワイヤ中の充填フラックスを
溶融し易くし、スラグの融点を下げ流動性を良くするの
で溶接部の融合不良、スラグ巻込み、ピット発生防止に
有効な成分である。またスラグ剥離性改善にも効果的で
あるが、過多となるとアークが不安定になってスパッタ
増加の原因となる。このような金属弗化物の添加による
弊害を抑えながら、より大きな効果を得るためには、Ｎ
ａＦ，ＬｉＦを必須成分として、かつＮａＦ，ＬｉＦを
含めた全金属弗化物の添加量を、Ｆに換算して０．４〜
１．５％にする必要がある。ＮａＦ，ＬｉＦ以外の金属
弗化物としては、ＣａＦ２ ，ＡｌＦ３ ，ＭｇＦ２
，Ｎａ３ ＡｌＦ６ ，Ｋ２ ＺｒＦ６ などを上記範
囲内で使用できる。Metal fluoride makes it easier to melt the flux filling in the wire, lowers the melting point of slag, and improves fluidity, so it is an effective component for preventing poor fusion in welds, slag entrainment, and pitting. It is also effective in improving slag removability, but if too much, the arc becomes unstable and causes an increase in spatter. In order to obtain greater effects while suppressing the harmful effects of adding metal fluorides, it is necessary to add N.
The amount of all metal fluorides added, including aF and LiF as essential components and NaF and LiF, is 0.4 to 0.4 in terms of F.
It needs to be 1.5%. Metal fluorides other than NaF and LiF include CaF2, AlF3, MgF2
, Na3 AlF6, K2 ZrF6, etc. can be used within the above range.
【００１９】Ｔｉは脱酸剤としての効果を発揮し、溶着
金属の延性、靭性、耐割れ性の向上をもたらす。しかし
０．１％未満ではその効果が不十分であり、１．９％を
超えるとスラグ溶融金属の流動性が劣化して、均一で良
好なビードが形成されなくなる。[0019] Ti exhibits an effect as a deoxidizing agent and improves the ductility, toughness, and cracking resistance of the weld metal. However, if it is less than 0.1%, the effect is insufficient, and if it exceeds 1.9%, the fluidity of the slag molten metal deteriorates, making it impossible to form uniform and good beads.
【００２０】本発明において金属成分とは、Ｎｉ，Ｃｒ
，Ｍｏ，Ｎｂ，Ｆｅ，Ｍｎ，Ｔｉ，Ａｌ，Ｍｇなどや、
これらの元素を複合して含有する粉末状の合金剤や脱酸
剤を意味し、目標とする溶着金属成分への対応域はフラ
ックス充填率の調整などを目的として、０．１％以上の
必要量を単独もしくは複合で添加できる。しかし、これ
ら金属成分の添加量合計が１７％を超えると、必須とし
ているスラグ成分との兼合いから充填率が過多となって
溶接部の融合不良を発生し易くする。[0020] In the present invention, the metal components include Ni, Cr
, Mo, Nb, Fe, Mn, Ti, Al, Mg, etc.
It refers to a powdered alloying agent or deoxidizing agent that contains a combination of these elements, and the range corresponding to the target weld metal component is 0.1% or more for the purpose of adjusting the flux filling rate. Amounts can be added singly or in combination. However, if the total amount of these metal components added exceeds 17%, the filling rate becomes excessive due to the balance with the essential slag component, which tends to cause poor fusion of the welded portion.
【００２１】次に、本発明においてスラグ成分とは、金
属酸化物や金属弗物の非金属成分を意味するものであり
、前記した成分の他にスラグの塩基度や流動性、剥離性
、アーク状態などの微調整を目的としてＣａＯ，ＭｇＯ
，ＺｒＯ２ などを添加できる。これら成分を含めたス
ラグ成分の合計が５．５％未満ではスラグ量が不足して
、均一で良好な被包性が得られなくなり、その結果スラ
グの焼付きやビード形状の劣化を招く。また１８％を超
えるとスラグ巻込みが発生し易くする。Next, in the present invention, the slag component means a non-metallic component such as metal oxide or metal fluoride, and in addition to the above-mentioned components, the basicity, fluidity, releasability, arc CaO, MgO for the purpose of fine-tuning the state etc.
, ZrO2, etc. can be added. If the total amount of slag components including these components is less than 5.5%, the amount of slag will be insufficient, making it impossible to obtain uniform and good encapsulation properties, resulting in slag burning and deterioration of bead shape. Moreover, if it exceeds 18%, slag entrainment is likely to occur.
【００２２】[0022]
【実施例】表１に示すＮｉ基合金のパイプ及びフープを
用い、表２に示す組成のＡＷＳＡ５．１４ＥＲＮｉＣｒ
−３、ＥＲＮｉＣｒＭｏ−３相当のワイヤを製造し、図
２のような軟鋼板上に試験ワイヤをバタリングして作製
した試験板を拘束治具で固定してから、そのＶ開先内部
を溶接電流；ＤＣ（＋）２００Ａ、電圧；３１Ｖ、速度
；２５〜３５ｃｍ／ｍｉｎ の溶接条件で８０％Ａｒ＋
２０％ＣＯ２ ガスシールドアーク溶接を行い、それぞ
れの溶接作業性や溶着金属性能などを比較した。なおワ
イヤ径は１．２ｍｍとし、外皮としてパイプＰ１，Ｐ２
を用いたものは図１（ａ）に示すシームレスパイプ、フ
ープＨ１，Ｈ２を用いたものは図１（ｂ）、フープＨ３
を用いたものは図１（ｄ）に示す断面形状とした。図２
において、板厚ｔ＝２０ｍｍ，開先角度θ＝４５°、ル
ート間隔ｒ＝１２ｍｍ、ｂは試験ワイヤによるバタリン
グ部を示す。[Example] Using Ni-based alloy pipes and hoops shown in Table 1, AWSA5.14ERNiCr with the composition shown in Table 2 was used.
-3. After manufacturing a wire equivalent to ERNiCrMo-3 and fixing the test plate by buttering the test wire on a mild steel plate as shown in Fig. 2 with a restraining jig, the inside of the V-groove was 80% Ar+ under welding conditions: DC(+) 200A, voltage: 31V, speed: 25-35cm/min
20% CO2 gas-shielded arc welding was performed and the welding workability and weld metal performance of each method were compared. The wire diameter is 1.2 mm, and pipes P1 and P2 are used as the outer skin.
The one using hoops H1 and H2 is the seamless pipe shown in Fig. 1(a), and the one using hoops H1 and H2 is shown in Fig. 1(b).
The cross-sectional shape shown in FIG. 1(d) was used. Figure 2
In, the plate thickness t=20 mm, the groove angle θ=45°, the root interval r=12 mm, and b indicates the buttering part by the test wire.
【００２３】溶接部の高温割れ性試験は図２の開先を初
層溶接後、染色探傷試験により、割れの有無を調査した
。融合不良やスラブ巻込みの溶接欠陥はＸ線透過写真に
より調査した。溶着金属の引張試験片はＪＩＳ Ｚ
３１１１ Ａ１号を、また衝撃試験片はＪＩＳ
Ｚ ３１１２ ４号を図２の開先に盛られた溶接部
から採取した。これらの試験結果は表３に示す。[0023] In the hot cracking test of the welded part, the presence or absence of cracking was investigated by dyeing flaw detection after welding the groove shown in FIG. 2 in the first layer. Welding defects such as poor fusion and slab entrainment were investigated using X-ray radiographs. Tensile test pieces for welded metal are JIS Z
3111 A1, and the impact test piece is JIS
Z 3112 No. 4 was collected from the welded part in the groove shown in Figure 2. The results of these tests are shown in Table 3.
【００２４】[0024]
【表２】[Table 2]
【００２５】[0025]
【表３】[Table 3]
【００２６】[0026]
【表４】[Table 4]
【００２７】[0027]
【表５】[Table 5]
【００２８】[0028]
【表６】[Table 6]
【００２９】[0029]
【表７】[Table 7]
【００３０】[0030]
【表８】[Table 8]
【００３１】[0031]
【表９】[Table 9]
【００３２】[0032]
【表１０】[Table 10]
【００３３】[0033]
【表１１】[Table 11]
【００３４】フラックス中の金属成分が多過ぎて充填率
が過多となったワイヤＮｏ．１は融合不良を発生した。
またフラックス中のスラブ成分が多すぎるワイヤＮｏ．
２はスラグの巻込みを発生し、逆にスラグ成分の少なす
ぎるワイヤＮｏ．３はスラグの被包性が不良であった。
さらにＴｉＯ２ 含有量の少ないワイヤＮｏ．４はスラ
グの被包性やビード形状が悪く、反対に多すぎるワイヤ
Ｎｏ．５はスラグの巻込みを発生した。Ａｌ２ Ｏ３
を含有量しないワイヤＮｏ．６はスラグの流動性が悪く
、含有量の多いワイヤＮｏ．７もスラグの流動性が悪く
なった。ＳｉＯ２ を含有しないワイヤＮｏ．８はスラ
グの流動性が悪く、含有量の多いワイヤＮｏ．９は溶着
金属中のＳｉが高くなって、延性や靭性の機械的性質が
劣化したうえ高温割れが発生した。Ｎａ（ナトリウム）
化合物の含有量が少ないワイヤＮｏ．１０はアークの安
定性が悪く、スパッタが多い。
またスラグの流動性や剥離性も悪くなっている。また、
Ｋ（カリウム）化合物を含有しないワイヤＮｏ．１１も
アークの安定性が悪く、スパッタも多い。次にＬｉＦな
どのＬｉ（リチウム）化合物を全く含有しないワイヤＮ
ｏ．１２やＬｉ化合物として炭酸リチウム（Ｌｉ２ Ｃ
Ｏ３ ）を含有しているものの、ＬｉＦを含有していな
いワイヤＮｏ．１５、Ｎａ化合物として酸化ナトリウム
（Ｎａ２ Ｏ）を含有しているものの、ＮａＦを含有量
しないワイヤＮｏ．１４はいずれもアークの安定性が悪
く、スパッタが多くなっており、スラグの剥離性が劣化
した。さらに、Ｎａ，Ｋ，Ｌｉ化合物をそれぞれ含有し
ているものの、これら化合物の合計含有量が不足してい
るワイヤＮｏ．１３はやはりアークの安定性が悪く、ス
パッタも多く、スラグの流動性や剥離性が悪い。しかも
、スラグ巻込みや融合不良が発生している。一方Ｎａ，
Ｋ，Ｌｉの化合物がそれぞれ多過ぎ、しかもこれらの合
計添加量が多過ぎるワイヤＮｏ．３４，３５，３６はい
ずれも溶接ヒューム量が多い。[0034] Wire No. 1 had an excessive filling rate due to too much metal component in the flux. In case 1, fusion failure occurred. Also, wire No. has too much slab component in the flux.
Wire No. 2 causes slag entrainment, and conversely, wire No. 2 has too little slag component. Sample No. 3 had poor slag encapsulation. Furthermore, wire No. with a lower TiO2 content. Wire No. 4 has poor slag envelopment and bead shape, and on the other hand, has too many wires. In No. 5, slag entrainment occurred. Al2O3
Wire No. that does not contain Wire No. 6 has poor fluidity of slag and has a high content of slag. 7 also had poor slag fluidity. Wire No. not containing SiO2. Wire No. 8 has poor fluidity of slag and has a high content of slag. In No. 9, the Si content in the weld metal increased, and mechanical properties such as ductility and toughness deteriorated, and hot cracking occurred. Na (sodium)
Wire No. with low compound content. No. 10 has poor arc stability and a lot of spatter. Furthermore, the fluidity and peelability of the slag are also poor. Also,
Wire No. not containing K (potassium) compound. No. 11 also had poor arc stability and a lot of spatter. Next, wire N that does not contain any Li (lithium) compounds such as LiF
o. 12 and Lithium carbonate (Li2C) as a Li compound.
Wire No. 2 containing O3) but not containing LiF. 15. Wire No. 1 contains sodium oxide (Na2O) as a Na compound but does not contain NaF. No. 14 had poor arc stability, increased spatter, and deteriorated slag removability. Furthermore, although the wire No. 1 contains Na, K, and Li compounds, the total content of these compounds is insufficient. No. 13 still has poor arc stability, a lot of spatter, and poor slag fluidity and peelability. Moreover, slag entrainment and poor fusion occur. On the other hand, Na,
Wire No. 1 contains too many K and Li compounds, and the total amount of these compounds added is too large. Nos. 34, 35, and 36 all have a large amount of welding fume.
【００３５】全金属弗化物のＦ換算値が少な過ぎるワイ
ヤＮｏ．１６はスラグの流動性や剥離性が悪く、融合不
良が発生し易い。逆に金属弗化物が多過ぎるワイヤＮｏ
．１７はアークが不安定となって、スパッタが多発した
。[0035] Wire No. 1 in which the F equivalent value of total metal fluoride is too small. No. 16 has poor slag fluidity and peelability, and poor fusion is likely to occur. On the other hand, wire No. with too much metal fluoride
．． In No. 17, the arc became unstable and spatter occurred frequently.
【００３６】Ｔｉ含有量が多過ぎるワイヤＮｏ．１８は
スラグの流動性やビード形状などが悪く、また、逆にＴ
ｉを含有しないワイヤＮｏ．１９は溶着金属の機械的性
質が悪くなった。Wire No. with too much Ti content. No. 18 had poor slag fluidity and bead shape, and conversely, T
Wire No. not containing i. In No. 19, the mechanical properties of the welded metal deteriorated.
【００３７】これに対して、ワイヤのフラックス充填率
やフラックス中のＴｉＯ２ ，Ａｌ２ Ｏ３ ，ＳｉＯ
２ ，ＮａＦ，ＬｉＦを含めたＮａ，Ｋ，Ｌｉ化合物及
び金属弗化物、Ｔｉ含有量がそれぞれ適正範囲にあって
、しかも金属成分やスラグ成分が適量の本発明ワイヤＮ
ｏ．２０〜３３は、どのワイヤもスパッタ発生やスラグ
の被包性及び剥離性が良好で、融合不良やスラグ巻込み
の欠陥が発生せず、しかも延性、靭性、耐割れ性などの
溶着金属性能も良好であった。なお、表３における溶接
作業性評価は〔◎；極めて良好、○；良好、△；やや良
好、×；不良〕を示すものである。On the other hand, the flux filling rate of the wire and the amount of TiO2, Al2O3, SiO
2. The wire N of the present invention, in which the Na, K, Li compounds including NaF, LiF, metal fluoride, and Ti contents are in appropriate ranges, and the metal components and slag components are in appropriate amounts.
o. Nos. 20 to 33 have good spatter generation, slag encapsulation, and peelability, and no defects such as poor fusion or slag entrainment, and have good weld metal performance such as ductility, toughness, and cracking resistance. It was good. The welding workability evaluation in Table 3 shows [◎: very good, ◯: good, △: somewhat good, ×: poor].
【００３８】[0038]
【発明の効果】本発明は、Ｎｉ基合金溶接用フラックス
入りワイヤにおけるフラックス充填率やＴｉＯ２ ，Ａ
ｌ２ Ｏ３ ，ＳｉＯ２ ，ＮａＦ，ＬｉＦを含むＮａ
，Ｋ，Ｌｉの化合物及び金属弗化物、Ｔｉ含有量や金属
成分、スラグ成分のフラックス組成範囲を特定すること
によって、溶接作業性や溶着金属性能が良好で融合不良
などの欠陥も発生しにくくすることを可能とし、Ｎｉ基
合金の溶接作業能率と、溶接部の品質向上に大きく貢献
できる。Effects of the Invention The present invention improves the flux filling rate, TiO2, A
Na including l2O3, SiO2, NaF, LiF
By specifying the flux composition range of , K, Li compounds, metal fluorides, Ti content, metal components, and slag components, welding workability and weld metal performance are good, and defects such as poor fusion are less likely to occur. This makes it possible to greatly contribute to improving the efficiency of welding Ni-based alloys and the quality of welded parts.
【図１】（ａ），（ｂ），（ｃ），（ｄ）は各種フラッ
クス入りワイヤの断面形状を示す模式図である。FIG. 1 (a), (b), (c), and (d) are schematic diagrams showing cross-sectional shapes of various flux-cored wires.
【図２】溶接作業性，高温割れ試験，引張試験，衝撃試
験などに用いた開先形状を示す断面図である。FIG. 2 is a sectional view showing groove shapes used for welding workability, hot cracking tests, tensile tests, impact tests, etc.
１ 外皮 ２ 充填フラックス ３ 継目 θ 開先角度 ｔ 板厚 ｒ ルート間隔 ｂ バタリング部 1. Outer skin 2 Filling flux 3 Seam θ Bevel angle t Plate thickness r Route spacing b Buttering section
Claims (1)
イヤ全重量に対してフラックスを１０〜２３％充填し、
フラックス中にワイヤ全重量比でＴｉＯ２ を４〜１２
％、Ａｌ２ Ｏ３ を０．１〜２％、ＳｉＯ２ を０．
１〜３％、Ｎａ，Ｋ，Ｌｉの化合物をＮａ，Ｋ，Ｌｉに
それぞれ換算し、Ｎａを０．１〜２．０％、Ｋを０．０
１〜１．５％、Ｌｉを０．０６〜１．０％、Ｎａ＋Ｋ＋
Ｌｉを０．４〜２．４％、ＮａＦ，ＬｉＦを含む全金属
弗化物をＦに換算して０．４〜１．５％、Ｔｉを０．１
〜１．９％を含有し、かつ、金属成分の合計は０．１〜
１７％、スラグ成分の合計は５．５〜１８％であること
を特徴とするＮｉ基合金溶接用フラックス入りワイヤ。Claim 1: Filling the inside of the outer skin made of a Ni-based alloy with 10 to 23% flux based on the total weight of the wire,
Add 4 to 12 TiO2 in the flux based on the total weight of the wire.
%, Al2O3 0.1-2%, SiO2 0.
1 to 3%, Na, K, and Li compounds are converted to Na, K, and Li, respectively, and Na is 0.1 to 2.0% and K is 0.0%.
1-1.5%, Li 0.06-1.0%, Na+K+
Li 0.4 to 2.4%, total metal fluoride including NaF and LiF converted to F 0.4 to 1.5%, Ti 0.1
~1.9%, and the total metal component is ~0.1~
17%, and the total slag component is 5.5 to 18%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2490891A JPH04266495A (en) | 1991-02-19 | 1991-02-19 | Flux-cored wire for ni-based alloy welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2490891A JPH04266495A (en) | 1991-02-19 | 1991-02-19 | Flux-cored wire for ni-based alloy welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04266495A true JPH04266495A (en) | 1992-09-22 |
Family
ID=12151277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2490891A Withdrawn JPH04266495A (en) | 1991-02-19 | 1991-02-19 | Flux-cored wire for ni-based alloy welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04266495A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06198488A (en) * | 1993-01-08 | 1994-07-19 | Nippon Steel Corp | Flux cored wire consisting of ni-base alloy as its sheath |
| JPH06292990A (en) * | 1992-09-30 | 1994-10-21 | Kobe Steel Ltd | Flux cored wire |
| CN105081603A (en) * | 2014-05-14 | 2015-11-25 | 株式会社神户制钢所 | Ni BASED ALLOY FLUX CORED WIRE |
-
1991
- 1991-02-19 JP JP2490891A patent/JPH04266495A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06292990A (en) * | 1992-09-30 | 1994-10-21 | Kobe Steel Ltd | Flux cored wire |
| JPH06198488A (en) * | 1993-01-08 | 1994-07-19 | Nippon Steel Corp | Flux cored wire consisting of ni-base alloy as its sheath |
| CN105081603A (en) * | 2014-05-14 | 2015-11-25 | 株式会社神户制钢所 | Ni BASED ALLOY FLUX CORED WIRE |
| CN105081603B (en) * | 2014-05-14 | 2017-08-25 | 株式会社神户制钢所 | Ni based alloy flux-cored wires |
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| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |