JPS63154293A - Coated arc welding rod for stainless steel - Google Patents
Coated arc welding rod for stainless steelInfo
- Publication number
- JPS63154293A JPS63154293A JP29680686A JP29680686A JPS63154293A JP S63154293 A JPS63154293 A JP S63154293A JP 29680686 A JP29680686 A JP 29680686A JP 29680686 A JP29680686 A JP 29680686A JP S63154293 A JPS63154293 A JP S63154293A
- Authority
- JP
- Japan
- Prior art keywords
- limestone
- stainless steel
- welding rod
- less
- arc
- 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 title claims abstract description 60
- 239000010935 stainless steel Substances 0.000 title claims abstract description 29
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 29
- 235000019738 Limestone Nutrition 0.000 claims abstract description 43
- 239000006028 limestone Substances 0.000 claims abstract description 42
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 229910001512 metal fluoride Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 21
- 150000004760 silicates Chemical class 0.000 claims description 3
- 150000003609 titanium compounds Chemical class 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 11
- 239000010936 titanium Substances 0.000 abstract description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052719 titanium Inorganic materials 0.000 abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 11
- 229910052804 chromium Inorganic materials 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 235000019353 potassium silicate Nutrition 0.000 description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 5
- 239000004111 Potassium silicate Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 4
- 229910052913 potassium silicate Inorganic materials 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 2
- 229910001632 barium fluoride Inorganic materials 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910001610 cryolite Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004299 exfoliation Methods 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- -1 rutile Chemical class 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- 229910017116 Fe—Mo Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 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 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 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
- 238000001035 drying Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium 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
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 239000011656 manganese carbonate Substances 0.000 description 1
- 235000006748 manganese carbonate Nutrition 0.000 description 1
- 229940093474 manganese carbonate Drugs 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
- 239000000155 melt Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 235000019794 sodium silicate Nutrition 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3608—Titania or titanates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はステンレス鋼被覆アーク溶接棒に係り、特に耐
捧焼は性の優れたステンレス鋼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 stainless steel coated arc welding rod, and more particularly to a stainless steel coated arc welding rod with excellent roasting resistance.
（従来の技術）
従来、ステンレス鋼被覆アーク溶接棒は心線の種類によ
り、目標とする溶着金属のＣｒ及びＮｉ量と同程度にＣ
ｒ及びＮｉを含有したステンレス鋼心線を用い、成分調
整のためのＣｒ及びＮｉを含有する被覆剤を被覆するの
が通常である。(Prior art) Conventionally, stainless steel coated arc welding rods have a carbon content equivalent to the target Cr and Ni content of the weld metal, depending on the type of core wire.
It is usual to use a stainless steel core wire containing r and Ni and coat it with a coating agent containing Cr and Ni for composition adjustment.
しかし、Ｃｒ−Ｎｉ系ステンレス鋼心線は電気抵抗が大
きいため溶接中に溶接棒が赤熱しアークが不安定となる
、いわゆる棒焼は現象が発生する欠点がある。However, since the Cr--Ni stainless steel core wire has a high electrical resistance, it has the disadvantage that the welding rod becomes red hot during welding, causing the arc to become unstable, a so-called stick burning phenomenon.
そのため、本発明者等が特開昭５６−６２６９８号公報
において、低炭素鋼を用いＣｒ及びＮｉ全てを被覆剤か
ら添加する技術、又、特開昭５９−９２１９６号公報に
おいては、Ｃｒ−Ｎｉ等の合金成分を内包してなる炭素
鋼バイブを用いる技術を開示しているが、いずれも心線
の種類を炭素鋼に変えた事によって、耐捧焼は性の改善
を行ったものであり、ステンレス鋼心線を用いた場合の
耐棒焼は性の改善ではない。Therefore, in JP-A No. 56-62698, the present inventors have developed a technique in which low carbon steel is used and all Cr and Ni are added from the coating material, and in JP-A-59-92196, Cr-Ni However, in both cases, the firing resistance has been improved by changing the type of core wire to carbon steel. , the resistance to bar scorch when using stainless steel core wire is not an improvement in properties.
しかしながら、ステンレス鋼心線を用いた溶接棒は、溶
接金属のＣｒ及びＮｉの偏析の心配がないため、耐食性
などの性能上の信頌性が高く市販ステンレス鋼被覆アー
ク溶接棒の大部分がこの種のものである。However, since welding rods using stainless steel core wire do not have to worry about the segregation of Cr and Ni in the weld metal, most of the commercially available stainless steel coated arc welding rods have high reliability in terms of performance such as corrosion resistance. It is of seeds.
従って、ステンレス鋼心線を用いた耐棒焼は性の良好な
ステンレス鋼被覆アーク溶接棒が強く望まれていた。Therefore, there has been a strong desire for a stainless steel coated arc welding rod that uses a stainless steel core wire and has good resistance to burnout.
（発明が解決しようとする問題点）
本発明は以上のような問題点を解決すべ（なされたもの
であって、その目的とするところは、被覆剤中の石灰石
の粒径を特定する事により、耐棒焼は性の良好なステン
レス鋼被覆アーク溶接棒を提供することである。(Problems to be Solved by the Invention) The present invention has been made to solve the above problems, and its purpose is to solve the above problems by specifying the particle size of limestone in the coating material. The object of the present invention is to provide a stainless steel coated arc welding rod with good resistance to burnout.
（問題点を解決するための手段）
前述のように、ステンレス鋼心線は電気抵抗が大きいた
め、溶接中に溶接棒が赤熱し、保護筒の形成が困難とな
りアークが不安定となるため、その改善策について種々
検討した。(Means for solving the problem) As mentioned above, stainless steel core wire has a high electrical resistance, so the welding rod becomes red hot during welding, making it difficult to form a protective tube and making the arc unstable. We considered various ways to improve the situation.
その結果、被覆剤中の石灰石の粒径を特定することによ
り、保護筒を強固にし、最後まで安定したアークを維持
できるという知見を得て本発明をなしたもので、その要
旨とするところは、被覆剤全重量に対して、石灰石１０
〜３０％、Ｓｉｎｇに換算した硅砂及び硅酸塩化合物の
１種又は２種以上の合計５〜１５％、ＴｉＯ□に換算し
たチタン化合物１５〜５５％、金属弗化物３〜１５％、
金属粉末２５％以下を含有する被覆剤をステンレス鋼被
覆アーク溶接棒において、該石灰石は粒径３５５ミクロ
ン以下であり、かつ粒径１ミクロン以下の微粒石灰石が
２０〜３５％、粒径４３ミクロン以上の粗粒石灰石が５
〜２０％であることを特徴とするステンレス鋼被覆アー
ク溶接棒にある。As a result, they obtained the knowledge that by specifying the particle size of limestone in the coating material, it was possible to strengthen the protective tube and maintain a stable arc to the end.The present invention was created based on this knowledge. , 10 limestone based on the total weight of the coating.
~30%, a total of 5 to 15% of one or more of silica sand and silicate compounds converted to Sing, 15 to 55% of titanium compounds converted to TiO□, 3 to 15% of metal fluorides,
A stainless steel coated arc welding rod is coated with a coating agent containing 25% or less of metal powder, the limestone has a grain size of 355 microns or less, and 20 to 35% is fine limestone with a grain size of 1 micron or less, and the grain size is 43 microns or more. Coarse-grained limestone of 5
~20% stainless steel coated arc welding rod.
（作 用） 以下に本発明を作用と共に詳細に説明する。(for production) The present invention will be explained in detail below along with its operation.
本発明の大きな特徴は、被覆剤中の石灰石に微粒と粗粒
の石灰石を特定量組合せることにより耐棒焼は性の改善
を行った点にある。すなわち、石灰石の配合は、スラグ
に高塩基性を与え、溶接金属のＰ、Ｓ、Ｓｔの増加を抑
制し、分解生成するＣＯ□ガスの還元雰囲気を以って大
気よりアークをシールドするのに有効に作用してブロー
ホールの発生を防止する。又、溶接作業性上はアークを
安定にするのに有効であり、特に微粒の石灰石は広がり
のあるソフトなアーク状態にすると共に、保護筒を強固
にする作用があるが、過剰に配合すると保護筒が長くな
り、逆にアークの広がりがなくなる。A major feature of the present invention is that the stick scorch resistance is improved by combining specific amounts of fine and coarse limestone in the limestone in the coating material. In other words, the addition of limestone imparts high basicity to the slag, suppresses the increase in P, S, and St in the weld metal, and shields the arc from the atmosphere with the reducing atmosphere of CO□ gas produced by decomposition. It works effectively to prevent blowholes from occurring. Also, in terms of welding workability, it is effective in stabilizing the arc, and fine limestone in particular has the effect of making the arc soft and spread out, and also has the effect of strengthening the protective tube, but if it is added in excess, it will weaken the protective tube. The cylinder becomes longer, and the arc spreads less.
粗粒の石灰石は、シャープで安定したアーク状態にする
作用があるが、過剰に配合すると、保護筒の溶融が早い
ため、保護筒が短かくなり、アークが不安定となる。し
たがって、これら石灰石を適正量組み合わせることによ
り、安定したアーク状態を維持し、更には保護筒を強固
にするのに有効に作用する。Coarse-grained limestone has the effect of creating a sharp and stable arc, but if it is added in excess, the protective tube will melt quickly, making the protective tube shorter and making the arc unstable. Therefore, by combining appropriate amounts of these limestones, it is effective to maintain a stable arc state and further strengthen the protective tube.
石灰石の配合は１０％未満では効果がなく、３０％を超
えるとスラグのはくり性及び流動性が悪くなるので１０
〜３０％に制限し、粒径は３５５ミクロンを超えると溶
接作業性上アークが荒く、多数のスパッタが発生するた
め、３５５ミクロン以下とする。If the limestone content is less than 10%, it will not be effective, and if it exceeds 30%, the peelability and fluidity of the slag will deteriorate.
-30%, and the grain size is set to 355 microns or less because if it exceeds 355 microns, the arc will be rough in terms of welding workability and a large number of spatters will occur.
第１図は、粒径３５５ミクロン以下の石灰石中の粒径１
ミクロン以下の微粒石灰石と粒径４３ミクロン以上の粗
粒石灰石との割合を変化させ耐棒焼は性との関係を調査
した結果を示したものである。Figure 1 shows the particle size 1 in limestone with a particle size of 355 microns or less.
This figure shows the results of an investigation into the relationship between stick scorch resistance and property by changing the ratio of fine limestone with a particle size of 43 microns or more and coarse limestone with a particle size of 43 microns or more.
図中○印は最後まで安定したアークで耐棒焼は性が良好
であり、Δ印は溶接棒の赤熱後アークが不安定となり、
Ｘ印は最初からアークが不安定で良好な溶接が不可能な
状態を示す。In the figure, the ○ mark indicates a stable arc until the end, which has good stick burn resistance, and the ∆ mark indicates that the arc becomes unstable after the welding rod becomes red-hot.
The mark X indicates a state where the arc is unstable from the beginning and good welding is impossible.
粒径１ミクロン以下の微粒石灰石が２０％未満では、ア
ークに広がりがなく、溶接棒の赤熱後は保護筒の形成が
困難でアークが不安定となり、３５％を超えると、保護
筒が長くなりアークに広がりがなく、溶接棒赤熱後は保
護筒の片溶けが発生しアークが不安定となる。粒径４３
弯クロン以上の粗粒石灰石が５％未満では、アークの吹
付けが弱く、鋼板アークが不安定となり、２０％を超え
ると、保護筒が短かくアークが不安定となる。If the content of fine limestone with a grain size of 1 micron or less is less than 20%, the arc will not spread and it will be difficult to form a protective tube after the welding rod becomes red hot, making the arc unstable. If it exceeds 35%, the protective tube will become long. The arc does not spread, and after the welding rod becomes red hot, the protective tube melts on one side, making the arc unstable. Particle size 43
If the content of coarse limestone of curvature or higher is less than 5%, the arc blowing will be weak and the steel plate arc will become unstable, and if it exceeds 20%, the protective tube will be short and the arc will become unstable.
従って粒径１ミクロン以下の微粒石灰石を２０〜３５％
、粒径４３ミクロン以上の粗粒石灰石を５〜２０％に制
限する。Therefore, 20-35% of fine limestone with a particle size of 1 micron or less is used.
, coarse-grained limestone with a particle size of 43 microns or more is limited to 5-20%.
ＳｉＯ□の配合は、スラグの流動性を良くするため５％
以上必要であるが、１５％を超えるとスラグのばくり性
を悪くするので５〜１５％に制限する。The blend of SiO□ is 5% to improve the fluidity of the slag.
Although the above amount is necessary, if it exceeds 15%, the slag exfoliation property will be deteriorated, so it is limited to 5 to 15%.
なお、ここで言うＳｉＯ□とは、珪砂あるいは珪灰石、
カリ長石、マイカ、タルク、カオリン、硅酸カリ、硅酸
ソーダ、硅酸リチウム等の硅酸塩化合物をＳｉＯ□に換
算したものを指す。Note that SiO□ here refers to silica sand or wollastonite,
Refers to silicate compounds such as potassium feldspar, mica, talc, kaolin, potassium silicate, sodium silicate, and lithium silicate converted to SiO□.
ＴｉＯ２の配合は、アークを安定にし、スラグの流動性
、被包性、ばくり性を良好にし、ビード外観、形状を良
好にすることにあるが、１５％未満では効果がなく、５
５％を超えると立向姿勢での溶接が困難になるとともに
スラグが固くなり、かえってばくり性を損ねるので、１
５〜５５％に制限する。なお、ここで言うＴｉＯ□とは
ルチール、ホワイトチタン、チタンスラグ、イルミナイ
ト、クチン酸カリ等のＴｉ化合物をＴｉＯ２に換算した
ものを指す。The purpose of adding TiO2 is to stabilize the arc, improve the fluidity, encapsulation and exfoliation of the slag, and improve the appearance and shape of the bead.
If it exceeds 5%, it will be difficult to weld in a vertical position and the slag will become hard, which will actually impair the deformability.
Limit to 5-55%. Note that TiO□ here refers to Ti compounds such as rutile, white titanium, titanium slag, illuminite, and potassium cuticate converted into TiO2.
金属弗化物の配合は、スラグの流動性を良くし、ビード
形状を良好に、することにあるが、３％未満では効果が
なく、１５％を超えるとスラグのばくり性を悪くすると
ともに、アークを不安定にするので３〜１５％に制限す
る。The purpose of adding metal fluoride is to improve the fluidity of the slag and improve the bead shape, but if it is less than 3%, it is ineffective, and if it exceeds 15%, it will worsen the slag's exfoliability, and Since it makes the arc unstable, it is limited to 3 to 15%.
なおここで言う金属弗化物とは、螢石、氷晶石、弗化マ
グネシウム、弗化アルミニウム、弗化バリウム、弗化リ
チウム、弗化ソーダ等を指す。Note that the metal fluoride mentioned here refers to fluorite, cryolite, magnesium fluoride, aluminum fluoride, barium fluoride, lithium fluoride, sodium fluoride, and the like.
金属粉末は、Ｆｅ−＾１ 、 Ｆｅ−３ｔ、 Ｆｅ−Ｔ
ｉ、 Ｍｎ。Metal powders include Fe-^1, Fe-3t, Fe-T
i, Mn.
Ａ１． Ｍｇ、 Ｔｉ等を脱酸剤として用いる他、使用
するステンレス鋼心線の化学成分によって、目的とする
溶着金属成分の組成を満足しない場合に、Ｆｅ−Ｍｏ、
Ｍｏ、 Ｆｅ−Ｎｂ、 Ｎｂ、 Ｆｅ−Ｃｒ、 Ｃｒ
、 Ｎｉなどを合金剤として配合し、溶着金属の機械的
性質、耐食性の向上をはかるため配合する。A1. In addition to using Mg, Ti, etc. as a deoxidizing agent, if the desired composition of the weld metal component is not satisfied depending on the chemical composition of the stainless steel core wire used, Fe-Mo,
Mo, Fe-Nb, Nb, Fe-Cr, Cr
, Ni, etc. are blended as alloying agents to improve the mechanical properties and corrosion resistance of the weld metal.
Ｃｒ、 Ｎｉ、 Ｍｎ、 Ｓｉ、 Ｍｏ、 Ｃｕ、 Ｎ
ｂの大部分を心線に含有させた場合、溶接の時に消耗す
る成分を補うための合金剤及び脱酸剤は使用するステン
レス鋼心線の化学成分に応じて配合するため、最低量は
限定出来ないが、最高でも各成分の被覆剤から溶着金属
へ移行する歩留を考慮すると２５％で充分であり、従っ
て、前記金属粉末の１種以上の合計を２５％以下とする
。Cr, Ni, Mn, Si, Mo, Cu, N
When most of b is contained in the core wire, the minimum amount is limited because the alloying agent and deoxidizing agent to supplement the components consumed during welding are mixed according to the chemical composition of the stainless steel core wire used. However, considering the yield of transfer of each component from the coating material to the deposited metal, 25% is sufficient at most, and therefore, the total amount of one or more of the metal powders is set to 25% or less.
本発明の被覆剤の構成は以上のとおりであるが、さらに
アークの安定化、分解生成するＣＯ□ガスの増加による
シールド強化を目的とする場合には炭酸マグネシウム、
炭酸バリウム、炭酸ストロンチウム、炭酸マンガン等の
金属炭酸塩を配合することが出来る。The composition of the coating material of the present invention is as described above, but when the purpose is to further stabilize the arc and strengthen the shield by increasing CO□ gas generated by decomposition, magnesium carbonate,
Metal carbonates such as barium carbonate, strontium carbonate, manganese carbonate, etc. can be blended.
次に、本発明におけるステンレス鋼心線について述べる
と、溶着金属がＪＴＳ Ｚ３２２１に規定されているＣ
ｒ−Ｎｉ系及びＣｒ系ステンレス鋼成分が得られるよう
な成分組成を持つものの他に、特に高強度、耐食性、耐
熱性などを考慮した成分組成を持つものをも含み、心線
成分としては、Ｃｒ１Ｏ〜２８％、Ｍｎ４．５％以下、
Ｓｉ １．５％以下、を必須とし、またこれにさらにＮ
ｉ２２％以下を含有し、さらに必要に応じてＭｏ４％以
下、Ｃｕ２．５％以下、Ｎｂ １．５％以下、Ｔｉ １
． Ｏ％以下、Ｖ １． Ｏ％以下、Ｎ Ｏ，５％以下
を含有せしめたものである。Next, regarding the stainless steel core wire in the present invention, the weld metal is C as specified in JTS Z3221.
In addition to those with a component composition that allows r-Ni and Cr stainless steel components to be obtained, it also includes those with a component composition that takes into consideration high strength, corrosion resistance, heat resistance, etc. As a core wire component, Cr1O~28%, Mn4.5% or less,
Si 1.5% or less is required, and in addition to this, N
Contains 22% or less of i, and if necessary, 4% or less of Mo, 2.5% or less of Cu, 1.5% or less of Nb, and 1
．． 0% or less, V 1. 0% or less, and N2O, 5% or less.
なお、本発明溶接棒の被覆剤には以上の成分の他、ＡＡ
ｚ０３． ＭｇＯ、ＫｚＯ、ＮａｚＯなどをそれぞれの
成分の合計が１０％を超えない範囲で配合しても本発明
溶接棒の特性を損うものではない。In addition to the above-mentioned components, the coating material for the welding rod of the present invention also contains AA
z03. Even if MgO, KzO, NazO, etc. are blended within a range in which the total of each component does not exceed 10%, the properties of the welding rod of the present invention will not be impaired.
ここで本発明の溶接棒の製造方法の一例について言及す
ると、たとえばステンレス鋼心線と被覆剤粉末を準備し
、被覆剤粉末と水ガラス（珪酸カリ水溶液、珪酸カリ水
溶液＋硅酸ソーダ水溶液）などの適当なバインダーで混
和して心線に被覆し、２００〜４５０℃で１時間程度乾
燥、焼成することにより製造することができる。Here, referring to an example of the method for manufacturing the welding rod of the present invention, for example, a stainless steel core wire and a coating powder are prepared, and the coating powder and water glass (potassium silicate aqueous solution, potassium silicate aqueous solution + sodium silicate aqueous solution), etc. It can be produced by mixing with a suitable binder, coating the core wire, drying and firing at 200 to 450°C for about 1 hour.
（実施例） 第１表にステンレス鋼心線の化学成分を示す。(Example) Table 1 shows the chemical composition of the stainless steel core wire.
心線寸法は直径４． Ｑ ｎ＋ 、長さ３５０龍である
。The core wire dimensions are diameter 4. Q n+ , length 350 dragons.
第２表はこれら心線と被覆剤の組合せによる溶接棒の組
成を示す。被覆径は６．５ ｗで被覆率は３４％である
。第３表にステンレス鋼板の化学成分を示す。Table 2 shows the compositions of welding rods based on these combinations of core wires and coating materials. The coating diameter is 6.5 W and the coverage is 34%. Table 3 shows the chemical composition of the stainless steel sheet.
第４表に、第２表の溶接棒と第３表のステンレス鋼板と
の組合せによる板厚１２龍を使ったすみ肉溶接作業性試
験結果を示す。なお溶接姿勢は水平すみ肉、溶接電流は
１４０Ａ（交流）、溶接速度は２０ｃｍ／ｍｉｎである
。Table 4 shows the results of a fillet welding workability test using a combination of the welding rods in Table 2 and the stainless steel plates in Table 3 with a thickness of 12 mm. The welding position was horizontal fillet, the welding current was 140 A (alternating current), and the welding speed was 20 cm/min.
以上から本発明例の溶接棒記号１ｔｌ、２，５゜６、
１０． １１． １２． １４． １６． １９． ２
０゜２２，２３，２５，２６．２９及び３１が溶接中に
溶接棒が赤熱しアークが不安定となるいわゆる捧焼は現
象の発生しない耐捧焼は性が良好であり、かつアーク状
態、スパッタ発生状況、スラグのばくり性等他の溶接作
業性も良好であることが明らかである。From the above, the welding rod symbols of the examples of the present invention are 1tl, 2,5°6,
10. 11. 12. 14. 16. 19. 2
0゜22, 23, 25, 26. 29 and 31 have good resistance to firing, which does not occur during welding, where the welding rod becomes red hot and the arc becomes unstable. It is clear that other welding workability such as spatter generation and slag release properties are also good.
これに対し、比較例の溶接棒記号患３及び２７は粒径が
３５５ミクロンを超える石灰石を配合してあり、患４は
粒径３５５ミクロン以下の石灰石合計が３０％を超えて
おり、隘７は粒径４３〜３５５ミクロンの粗粒石灰石が
５％未満であり、漱８は粒径１ミクロン以下の微粒石灰
石が２０％未満であり、隘９は金属弗化物の合計が１５
％を超えており、隘１３は粒径３５５ミクロン以下の石
灰石合計が１０％未満であり、嵐１５及び３０は粒径４
３〜３５５ミクロンの粗粒石灰石が２０％を超えており
、階１７は５ｉＯｔ換算値の合計が５％未満であり、魚
１８は粒径３５５ミクロン以下の石灰石合計が３０％を
超え、ＳｉＯ□換算値の合計が１５％を超えさらにＴｉ
ｅ、換算値の合計が１５％未満であり、患２１は粒径１
ミクロン以下の微粒石灰石が３５％を超えており、阻２
４はＴｉＯ□換算値の合計が５５％を超えており、患２
８は金属弗化物の合計が３％未満であるので、いずれも
第４表に見られるように溶接作業性が劣っている。On the other hand, welding rods No. 3 and No. 27 of the comparative examples contain limestone with a particle size exceeding 355 microns, and No. 4 contains limestone with a particle size of 355 microns or less in total exceeding 30%. Coarse-grained limestone with a grain size of 43 to 355 microns is less than 5%, No. 8 has less than 20% fine-grained limestone with a grain size of 1 micron or less, and No. 9 has a total of 15% of metal fluoride.
%, Arashi 13 has less than 10% total limestone with a particle size of 355 microns or less, and Arashi 15 and 30 have a particle size of 4
Coarse-grained limestone with a grain size of 3 to 355 microns exceeds 20%, floor 17 has a total 5iOt conversion value of less than 5%, and fish 18 has a total limestone with a grain size of 355 microns or less that exceeds 30%, SiO□ If the total converted value exceeds 15% and Ti
e, the total converted value is less than 15%, and patient 21 has a particle size of 1
Fine limestone of less than a micron accounts for more than 35%,
4, the total TiO□ conversion value exceeds 55%, and patient 2
No. 8 has a total metal fluoride content of less than 3%, so as shown in Table 4, welding workability is poor in all cases.
脚注１）石灰石中の各粒径の配合割合を（）内に示す。Footnote 1) The proportion of each particle size in limestone is shown in parentheses.
２）珪砂（Ｓｉｎｇ ９７％）を溶接棒記号１ｔｌ 、
５．８．１７．２１ 、３０及び３１に用いた。2) Silica sand (Sing 97%) welding rod symbol 1tl,
5.8.17.21, 30 and 31.
カリ長石（ＳｉＯ□６４χ）を溶接棒記号患２，７，１
３，１，１，１５，２３．２４及び２７に用いた。Welding potash feldspar (SiO□64χ) with the symbol 2, 7, 1
3, 1, 1, 15, 23, 24 and 27.
マイカ（ＳｉＯ□４７χ）を溶接捧記号隘４．１０．１
８．２２及び２５に用いた。Welding mica (SiO□47χ) symbol 隘4.10.1
8.22 and 25.
珪灰石（Ｓｉｎｇ ５２χ）を溶接棒記号ｍ６，１１．
１９及び２６に用いた。Welding wollastonite (Sing 52χ) with welding rod symbol m6, 11.
19 and 26.
タルク（ＳｉＯ□２５χ）を溶接棒記号Ｎｌ１３．１２
．２０及び２９に用いた。Weld talc (SiO□25χ) with a welding rod symbol Nl13.12
．． 20 and 29.
カオリン（ＳｉＯｚ ８１χ）を溶接棒記号嵐飢１６及
び２８に用いた。Kaolin (SiOz 81χ) was used for welding rods with symbols Arashiki 16 and 28.
硅酸カリ （Ｓｉｎｇ ６５χ）を溶接棒記号隘１，２
，４，５，７，８，１０，１１，１３゜１４、１６．１
７．１９．２０．２２．２３．２５．２６．２８．２９
及び３１に用いた。Potassium silicate (Sing 65χ) welding rod symbol 1,2
,4,5,7,8,10,11,13°14,16.1
7.19.20.22.23.25.26.28.29
and 31.
硅酸ソーダ（ＳｉＯｚ ７０Ｘ）を溶接棒記号１１ｈ２
．３，５，６．８，９．ｌＬ１２゜１４．１５．ＩＴ、
１Ｂ、２０，２１，２３，２４．２６．２７．２９及び
３０に用た。Sodium silicate (SiOz 70X) welding rod symbol 11h2
．． 3, 5, 6. 8, 9. lL12°14.15. IT,
1B, 20, 21, 23, 24.26.27.29 and 30.
３）ルチール（Ｔｉ０□９８χ）を溶接棒記号隘１，２
，３．４，５．６，８，１１，１３゜１４、１６．１７
．２０．２１．２２．２３．２４．２７．３０及び３１
に用いた。3) Rutile (Ti0□98χ) welding rod symbol 1,2
, 3.4, 5.6, 8, 11, 13°14, 16.17
．． 20.21.22.23.24.27.30 and 31
It was used for.
ホワイトチタン（Ｔｉ０□９８χ）を溶接棒記号１１ｍ
６．１４．１７及び２２に用いた。Welding white titanium (Ti0□98χ) with rod symbol 11m
Used on 6.14.17 and 22.
チタン酸カリ （Ｔｉ（ｈ ７１χ）を溶接棒記号磁４
，１３．２２及び２４に用いた。Potassium titanate (Ti (h 71χ) welding rod symbol magnetic 4
, 13.22 and 24.
イルミナイト（ＴｉＯｚ ３９χ）を溶接棒記号磁７．
９．１０．１２．１５．１８゜１９．２５．２６．２８
及び２９に用いた。Illuminite (TiOz 39χ) welding rod symbol magnetic 7.
9.10.12.15.18゜19.25.26.28
and 29.
４）螢石（ＣａＦｚ ９８χ）を溶接棒記号１ｍｌ、４
，５，７，１．０，１１，１２，１３．１４゜１Ｂ、１
９，２２，２４，２６，２８，２９．３０及び３１に用
いた。4) Fluorite (CaFz 98χ) with welding rod symbol 1ml, 4
,5,7,1.0,11,12,13.14°1B,1
9, 22, 24, 26, 28, 29.30 and 31.
弗化マグネシウム（ＭｇＦｉ ９８χ）を溶接捧記号魚
２，８．１６．２１及び２７に用いた。Magnesium fluoride (MgFi 98χ) was used for welding symbols 2, 8, 16, 21 and 27.
弗化アルミニウム＜ｐｎ、ｓ １００χ）を溶接捧記号
阻３．９．１７及び２３に用いた。Aluminum fluoride <pn, s 100χ) was used for welding marks 3.9.17 and 23.
弗化バリウム（ＢａＦｚ １００χ）を溶接棒記号隅６
及び２０に用いた。Barium fluoride (BaFz 100χ) welding rod symbol corner 6
and 20.
氷晶石（Ｎａ３ｋｌＦｈ ９７２）を溶接棒記号１１＆
ｌ？、１５．２５に用いた。Welding cryolite (Na3klFh 972) with rod symbol 11&
l? , 15.25.
（発明の効果）
以上説明したように、本発明溶接棒は溶接作業性に優れ
、特に耐捧焼は性に優れたものである。(Effects of the Invention) As explained above, the welding rod of the present invention has excellent welding workability, and particularly excellent resistance to burning.
第１図は、粒径３５５ミクロン以下の石灰石中の粒径１
ミクロン以下の微粒石灰石と粒径４３ミクロン以上の粗
粒石灰石との割合を変化させた場合の配合量と耐棒焼は
性との関係を示す図である。
第１図
来プ径１ミクロンエ久下の、右大老し６仄石 （％）手
続補正魯（自発）
昭和６２年３月５日
特許庁長官 黒 １）明 雄 殿
１、事件の表示
昭和６１年特許願第２９６８０６号
２、発明の名称
ステンレス鋼被覆アーク溶接棒
３、補正をする者
事件との関係 持許出１頭人
東京都千代田区大手町二丁目６番３号
（６６５）新日本波１）・ｋ株式會社
代表者 武 １） 豊
４・代理人〒１００
東京都千代田区丸の内二丁ロ４番１号
６、補正の対象
明細書の発明の詳細な説明の欄
７、補正の内容 ／・・・（
１）明細書４頁６行「を含有する被覆剤を」を［を含有
する被覆剤をステンレス鋼心線に被覆してなる」に補正
する。
（２〕同６頁１６行「鋼板アークが不安定となり、」を
「後半アークが不安定となり、」に補正する。
（３）同７頁１５〜１６行「クチン酸カリ等」を「チタ
ン酸カリ等」に補正する・。
（４）同１８頁第４表を別紙のとおり補正する。Figure 1 shows the particle size 1 in limestone with a particle size of 355 microns or less.
It is a figure showing the relationship between the blending amount and stick scorching resistance when the ratio of fine-grained limestone with a particle size of 43 microns or more and coarse-grained limestone with a particle size of 43 microns or more is changed. Figure 1: Diameter 1 micron 1961 Patent Application No. 296806 2, Name of the invention: Stainless steel coated arc welding rod 3, Person making the amendment Relationship to the case License: 1 person 2-6-3 Otemachi, Chiyoda-ku, Tokyo (665) New Nippon Wave 1) K Stock Company Representative Takeshi 1) Yutaka 4 Agent Address: 4-1-6 Marunouchi 2-chome, Chiyoda-ku, Tokyo 100, Column 7 of the detailed description of the invention in the specification subject to amendment, Amendment Contents of /...(
1) In the specification, page 4, line 6, "a coating material containing" is amended to "a stainless steel core wire is coated with a coating material containing". (2) ``The steel plate arc became unstable,'' on page 6, line 16, was corrected to ``the second half of the arc became unstable,'' (4) Table 4 on page 18 will be amended as shown in the attached sheet.
Claims (1)
２に換算した硅砂及び硅酸塩化合物の１種又は２種以上
の合計５〜１５％、ＴｉＯ＿２に換算したチタン化合物
１５〜５５％、金属弗化物３〜１５％、金属粉末２５％
以下を含有する被覆剤をステンレス鋼心線に被覆してな
るステンレス鋼被覆アーク溶接棒において、該石灰石は
粒径３５５ミクロン以下であり、かつ粒径１ミクロン以
下の微粒石灰石が２０〜３５％、粒径４３ミクロン以上
の粗粒石灰石が５〜２０％であることを特徴とするステ
ンレス鋼被覆アーク溶接棒。Limestone 10-30%, SiO_
A total of 5 to 15% of one or more of silica sand and silicate compounds converted to TiO_2, 15 to 55% of titanium compounds converted to TiO_2, 3 to 15% of metal fluorides, and 25% of metal powder.
In a stainless steel coated arc welding rod formed by coating a stainless steel core wire with a coating material containing the following, the limestone has a particle size of 355 microns or less, and 20 to 35% of fine limestone with a particle size of 1 micron or less; A stainless steel coated arc welding rod characterized by containing 5 to 20% of coarse limestone with a grain size of 43 microns or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61296806A JPH0763867B2 (en) | 1986-12-15 | 1986-12-15 | Stainless steel coated arc welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61296806A JPH0763867B2 (en) | 1986-12-15 | 1986-12-15 | Stainless steel coated arc welding rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63154293A true JPS63154293A (en) | 1988-06-27 |
| JPH0763867B2 JPH0763867B2 (en) | 1995-07-12 |
Family
ID=17838384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61296806A Expired - Lifetime JPH0763867B2 (en) | 1986-12-15 | 1986-12-15 | Stainless steel coated arc welding rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0763867B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920407A (en) * | 2010-05-16 | 2010-12-22 | 十堰金科化工有限公司 | Novel alloy tool steel welding electrode |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179292A (en) * | 1983-03-31 | 1984-10-11 | Nippon Steel Corp | Coated arc welding electrode for steel for low temperature service |
-
1986
- 1986-12-15 JP JP61296806A patent/JPH0763867B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179292A (en) * | 1983-03-31 | 1984-10-11 | Nippon Steel Corp | Coated arc welding electrode for steel for low temperature service |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920407A (en) * | 2010-05-16 | 2010-12-22 | 十堰金科化工有限公司 | Novel alloy tool steel welding electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0763867B2 (en) | 1995-07-12 |
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