JPH0277557A - Steel for pressure vessel excellent in electron beam welding characteristic - Google Patents
Steel for pressure vessel excellent in electron beam welding characteristicInfo
- Publication number
- JPH0277557A JPH0277557A JP22748188A JP22748188A JPH0277557A JP H0277557 A JPH0277557 A JP H0277557A JP 22748188 A JP22748188 A JP 22748188A JP 22748188 A JP22748188 A JP 22748188A JP H0277557 A JPH0277557 A JP H0277557A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- electron beam
- beam welding
- pressure vessel
- toughness
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- 238000003466 welding Methods 0.000 title claims abstract description 31
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 30
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 3
- 229910052720 vanadium Inorganic materials 0.000 claims abstract 2
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 238000005242 forging Methods 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 238000009863 impact test Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- NBJBFKVCPBJQMR-APKOLTMOSA-N nff 1 Chemical compound C([C@H](NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H]1CCCN1C(=O)[C@H](CCCCN)NC(=O)[C@@H]1CCCN1C(=O)CC=1C2=CC=C(C=C2OC(=O)C=1)OC)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)NCC(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCNC=1C(=CC(=CC=1)[N+]([O-])=O)[N+]([O-])=O)C(=O)NCC(O)=O)C1=CC=CC=C1 NBJBFKVCPBJQMR-APKOLTMOSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は電子ビーム溶接特性の優れた圧力容器用鋼に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a steel for pressure vessels having excellent electron beam welding properties.
［従来の技術］
ボイラー・圧力容器設備の安全性、特に水圧試験時の安
全性に関して十分な配慮がなされ、圧力容器用鋼に対し
ても一定の靭性が必要とされる。[Prior Art] Sufficient consideration has been given to the safety of boiler and pressure vessel equipment, especially safety during hydraulic tests, and steel for pressure vessels is also required to have a certain degree of toughness.
その要求は当然構造物の一部を構成する溶接部に対して
もなされる。Naturally, this requirement also applies to welded parts that form part of the structure.
従来の圧力容器用鋼の溶接は潜弧溶接（ＳＡＷ）が主体
である。これらの溶接では板厚が厚くなるに従って加速
度的に積層数が増加していく。たとえば、板厚１００ｍ
ｍの材料では狭開先の施工をしてもＳＡＷ溶接では２０
バス以上の積層が必要となってくる。それに伴う施工時
間は膨大なものとなる。Conventional welding of steel for pressure vessels is mainly done by submerged arc welding (SAW). In these welding processes, the number of laminated layers increases at an accelerating rate as the plate thickness increases. For example, plate thickness 100m
m material, even if a narrow gap is constructed, SAW welding will require 20
It will require more layers than buses. The construction time associated with this will be enormous.
これらの溶接施工効率の向上と靭性要求に答えるために
、電子ビーム溶接の適用が考えられるようになってきた
。In order to improve welding efficiency and meet the requirements for toughness, electron beam welding has come to be considered.
電子ビーム溶接は従来のアーク溶接（ＳＡＷ溶接）と比
べて、板厚５０＋ｎ＋ｓを超える範囲ではコスト的に有
利な領域となり、板厚が厚くなるほどその効果は大きく
なる。ただ、電子ビーム溶接は従来の溶接法と異なって
、鋼板そのものを溶融させ接合するものであるため、鋼
板の製造にあたってはこの溶接部、特に靭性を考慮した
成分設計を行う必要がある。従来の圧力容器用鋼ではこ
の点の考慮が全くなされていなかったと言っても過言で
はない。Compared to conventional arc welding (SAW welding), electron beam welding is advantageous in terms of cost when the plate thickness exceeds 50+n+s, and the thicker the plate, the greater the effect. However, unlike conventional welding methods, electron beam welding involves melting and joining the steel plates themselves, so when manufacturing steel plates, it is necessary to design the components of the welded part, especially considering the toughness. It is no exaggeration to say that conventional steels for pressure vessels have not taken this point into consideration at all.
これまでの圧力容器用鋼に関する公知文献としては、特
公昭４Ｂ −２７１３４号、特公昭５１−２１９３３号
公報があるが、従来の溶接法で溶接することを前提とし
ているため、電子ビーム溶接による溶接部に関する考慮
は全くなされていない。Publicly known documents related to steel for pressure vessels include Japanese Patent Publication No. 4B-27134 and Japanese Patent Publication No. 21933/1982, but since they are based on the assumption that welding will be performed using conventional welding methods, welding using electron beam welding is No consideration was given to the division.
［発明が解決しようとする課題］
本発明の目的は以上の点を鑑みなされたもので、電子ビ
ーム溶接による溶接を行っても溶接部の低温靭性の良好
な電子ビーム溶接特性の優れた圧力容器用鋼を提供する
ことにある。[Problems to be Solved by the Invention] The object of the present invention has been made in view of the above points, and is to provide a pressure vessel with excellent electron beam welding characteristics, which has good low-temperature toughness of the welded part even when welded by electron beam welding. Our goal is to provide steel for industrial use.
［課題を解決するための手段］
本発明は重量％で、Ｃ： ０．１７〜０．３５％、Ｓｉ
二０．０５〜０．４５％、Ｍｎ ： ０．６〜１．７
０％、Ｐ≦０．０１０％、Ｓ≦０．０１０％、Ａｇ：
０．００５〜０．０４０％、Ｎ量０．００Ｇ％を基本成
分とし、残部ＦＣ１及び不可避的不純物からなることを
特徴とする電子ビーム溶接特性の優れた圧力容器用鋼、
及び重量％で、上記基本成分にさらに、Ｃｕ≦１．０％
、Ｎｉ≦１．２％、Ｃｒ≦１．０９６、Ｍｏ≦０．７％
、ＮｂＳ２．１％、■≦０．１％からなる強度改善元素
群のうちの１種または２種以上を含有させ、残部Ｆｅ、
及び不可避的不純物からなることを特徴とする電子ビー
ム溶接特性の優れた圧力容器用鋼である。[Means for Solving the Problems] The present invention contains C: 0.17 to 0.35%, Si
20.05-0.45%, Mn: 0.6-1.7
0%, P≦0.010%, S≦0.010%, Ag:
A pressure vessel steel with excellent electron beam welding properties, characterized in that the basic components are 0.005 to 0.040% and an N content of 0.00G%, with the remainder consisting of FC1 and inevitable impurities.
In addition to the above basic components, Cu≦1.0% by weight.
, Ni≦1.2%, Cr≦1.096, Mo≦0.7%
, NbS 2.1%, ■≦0.1%, containing one or more of the strength improving element group, the balance being Fe,
This is a pressure vessel steel with excellent electron beam welding properties, which is characterized by comprising: and unavoidable impurities.
［作 用］
電子ビーム溶接は従来の溶接法のように溶接部に別の材
料を供給し、溶接部の特性向上を図るのではなく、鋼板
そのものを溶融させ溶接するものである。そのため、鋼
板製造にあたって細粒化などの方法により高靭性を有す
る鋼板に調整されるが、これが高温で溶融されるため靭
性の低いものとなってしまう。[Function] Electron beam welding does not supply another material to the welded part to improve the properties of the welded part, as in conventional welding methods, but instead melts and welds the steel plate itself. Therefore, when manufacturing a steel plate, a steel plate with high toughness is adjusted by methods such as grain refinement, but since this steel plate is melted at a high temperature, the toughness ends up being low.
発明者らはここにおいて電子ビーム溶接部で良好な靭性
を有する鋼材を種々検討した結果、Ｐ及びＮｆｆ１が高
いと粒内１粒界が著しく脆化し、電子ビーム溶接部の靭
性を低下させることを見出したものである。Ｐ及びＮｆ
ｆ１が高い場合、粒界については、Ｐ及びＮが粒界に偏
析し粒界割れを起こす。As a result of examining various steel materials that have good toughness for electron beam welding, the inventors found that when P and Nff1 are high, the intragranular one grain boundary becomes extremely brittle, reducing the toughness of electron beam welding. This is what I found. P and Nf
When f1 is high, P and N segregate at grain boundaries, causing intergranular cracking.
粒内については、本発明のようなＣの絶対量の多い鋼で
はＰによるＣの偏析促進とＮによる焼入性上昇の作用に
より粗大な炭化物が析出する。これらを防止するために
は、ＰとＮｕを低くすること、つまりこれらの効果の相
乗作用により、著しく電子ビーム溶接部の靭性が向上す
ることを知見したものである。Regarding the inside of grains, coarse carbides precipitate in steels with a large absolute amount of C, such as those of the present invention, due to the effects of P promoting segregation of C and N increasing hardenability. It has been found that in order to prevent these problems, the toughness of the electron beam welded part is significantly improved by lowering P and Nu, that is, due to the synergistic effect of these effects.
第１図は電子ビーム溶接部のシャルピー衝撃試験値ｖ
Ｅ ｏに及ぼすＰとＮｆｆ１の影響を示す図である。Figure 1 shows the Charpy impact test value v of the electron beam welded part.
It is a figure showing the influence of P and Nff1 on Eo.
Ｃ量は０．２５％である。Ｐｆｉを０．０１０％以下、
Ｎ量をｏ、ｏｏｅ％以下にすることによりｖ Ｅ ｏ≧
４ｋｇ ｆ−ｍの良靭性が得られる。しかも個々の成分
の影響は直線的でない。The amount of C is 0.25%. Pfi 0.010% or less,
By reducing the amount of N to o, ooe% or less, v E o≧
Good toughness of 4 kg f-m is obtained. Moreover, the influence of individual components is not linear.
たとえば、Ｎ ：０．００９％でＰが０．０１５からａ
、（１１０％に低下した場合は、ｖ Ｅ ｏが０．５か
ら０．８ｋｇｆ・ｍにしかならないのに、Ｎ ：０．０
０６％でＰが０．０１５から０．０１０％に低下した場
合は、ｖＥｏが０．７から４．２ｋｇ ｆ ＝ｍと大幅
に向上し、低Ｐと低Ｎの相乗作用が明らかである。For example, N: 0.009% and P from 0.015 to a
, (If it decreases to 110%, v E o will only go from 0.5 to 0.8 kgf・m, but N : 0.0
When P decreased from 0.015 to 0.010% at 0.06%, vEo significantly improved from 0.7 to 4.2 kg f =m, and the synergistic effect of low P and low N is evident.
以下に成分限定理由を述べる。The reasons for limiting the ingredients are explained below.
Ｃは強度を確保するために必要な元素で、最低０．１７
％は必要である。しかし、０．３５％を超えると電子ビ
ーム溶接部の靭性が著しく低下するため上限を０．３５
％とする。C is an element necessary to ensure strength, with a minimum content of 0.17
% is required. However, if it exceeds 0.35%, the toughness of the electron beam welded part will decrease significantly, so the upper limit should be set at 0.35%.
%.
Ｓｌは低温靭性、溶接性を低下させる元素なので、極力
低減させ０．４５％を上限とする。しかし、製鋼上０．
０５％は必要である。Since Sl is an element that reduces low temperature toughness and weldability, it should be reduced as much as possible and the upper limit should be 0.45%. However, due to steel manufacturing, 0.
05% is necessary.
Ｍｎは強度を上昇させる元素で、最低０．６％必要であ
るが、１．７％を超えて含有させると、溶接性が劣化す
るばかりでなく、コスト上昇を招き、経済的でないため
、１．７％を上限とした。Mn is an element that increases strength and is required at least 0.6%, but if it is contained in excess of 1.7%, it not only deteriorates weldability but also increases cost and is not economical. The upper limit was set at .7%.
Ｐは先に述べたように、Ｎとの相乗作用により電子ビー
ム溶接部の粒内２粒界を脆化させるため、０．０１０％
を上限とする。As mentioned earlier, P embrittles the two grain boundaries within the grains of the electron beam weld due to its synergistic effect with N, so P is 0.010%.
is the upper limit.
Ｓは靭性に有害な元素であり、０．０１０％以下に限定
する。S is an element harmful to toughness and is limited to 0.010% or less.
Ａ、Ｑは脱酸上０．００５％以上必要であるが、０．０
４０％を超えて添加すると母材のクリープ特性が低下す
るため、上限を０．０４０％とする。A and Q are required to be 0.005% or more for deoxidation, but 0.0
If added in excess of 40%, the creep properties of the base material will deteriorate, so the upper limit is set at 0.040%.
Ｎは先に述べたように、Ｐとの相乗作用により電子ビー
ム溶接部の粒内１粒界を脆化させるため、０．００６％
を上限とする。As mentioned earlier, N embrittles the single grain boundary within the grain of the electron beam welded part due to its synergistic effect with P, so the content of N is 0.006%.
is the upper limit.
Ｃｕ、Ｎｉ 、Ｃｒ、Ｍｏ、Ｎｂ及び■は鋼の強度を上
昇させるという均等的作用をもつもので、必要に応じて
含有゛させるが、それぞれＣｕ：１．０％、 ＮＩ
：１．２％、 Ｃｒ ：１．０％、 Ｍｏ ： ０．
７％。Cu, Ni, Cr, Mo, Nb and ■ have the uniform effect of increasing the strength of steel, and are included as necessary, but Cu: 1.0%, NI
: 1.2%, Cr: 1.0%, Mo: 0.
7%.
Ｎｂ：Ｏ，１％及びｖ ： ｏ、ｉ％の含有上限値を超
えて含有させても、その作用効果が飽和したり、コスト
上昇を招き、経済的でないため、上記の強度改善元素群
のそれぞれの成分の含有量を上記の通りに定めた。Even if Nb: O, 1% and v: o, i% are contained in excess of the content upper limit values, their effects will be saturated and the cost will increase, making it uneconomical. The content of each component was determined as described above.
この鋼を溶製するにあたっては電気炉、転炉のいづれを
用いてもよい。鋼板とするにあたっては、鍛造、圧延の
いづれを用いてもよい。また鋼板の熱処理は圧延まま、
焼ならし、焼ならし一焼戻し、あるいは厚手材の場合は
加速冷却を使用することも可能である。In melting this steel, either an electric furnace or a converter may be used. In making a steel plate, either forging or rolling may be used. In addition, the heat treatment of the steel plate is done as it is rolled,
It is also possible to use normalizing, normalizing-tempering, or accelerated cooling for thick materials.
［実 施 例コ
第１表に示す化学成分のうち１〜９は本発明鋼で、ｌＯ
〜１５は比較鋼である。[Example] Among the chemical components shown in Table 1, 1 to 9 are the steel of the present invention, and lO
-15 are comparative steels.
鋼の溶製は転炉により行い、常法によりスラブとしたの
ち第１表に示す板厚に厚板圧延した。The steel was melted in a converter, made into slabs by a conventional method, and then rolled into slabs to the thickness shown in Table 1.
鋼板の熱処理は１． ２．１０．１１は圧延まま、３゜
４．６，７，１２．１３は９１０℃の焼ならし、５，１
４は加速冷却、８． ９．１５．１６は９１０℃の焼な
らし一６４０℃の焼戻しである。Heat treatment of steel plate is 1. 2.10.11 is as rolled, 3° 4.6, 7, 12.13 is normalized at 910°C, 5,1
4 is accelerated cooling; 8. 9.15.16 is normalized at 910°C and tempered at 640°C.
第２表にこれらの鋼の母材の引張試験、シャルピー衝撃
試験及び電子ビーム溶接部のシャルピー衝撃試験結果を
示す。Table 2 shows the results of the tensile test, Charpy impact test of the base metal of these steels, and the Charpy impact test of the electron beam welded parts.
但し、電子ビーム溶接条件は電圧１５０ｋＶ 、電流１
８０ｍＡ 、速度２０ｃｍ／ｗｉｎ、である。However, the electron beam welding conditions are voltage 150kV, current 1
80mA, speed 20cm/win.
電子ビーム溶接部のンヤルビー衝撃試験のノツチ位置は
溶性金属中央に入れた。The notch position for the Nyaruby impact test of the electron beam weld was set at the center of the molten metal.
本発明の鋼１〜９はＰとＮ量を適切な範囲に入れること
により、それらの相乗作用により良好な電子ビーム溶接
部の低温靭性を有している。母材特性も良好である。Steels 1 to 9 of the present invention have good low-temperature toughness of electron beam welded parts due to the synergistic effect of P and N contents within appropriate ranges. The base material properties are also good.
つぎに、ｍｔｏはＰが高く、鋼１１はＮが高く、鋼１２
、 ｆ３ハＰが高＜、１Ｍ１４はＮが高＜ 、ｎ４１
５ハＰ７＞＜高くそれぞれ電子ビーム溶接部の靭性が低
い。鋼１ＢはＣか低いため強度が低くなっている。Next, mto has high P, steel 11 has high N, and steel 12
, f3 is high in P<, 1M14 is high in N, n41
5P7><High, and the toughness of the electron beam welded part is low. Steel 1B has a low C content, so its strength is low.
［発明の効果］
以上述べたように、本発明よればＰとＮＨを低い範囲に
成分限定することにより、粒界脆化及び粒内への粗大な
炭化物の析出防止が図られ、電子ビーム溶接部の靭性の
高い圧力容器用鋼を経済的に提供するものであり、産業
上多大な効果を奏するものである。[Effects of the Invention] As described above, according to the present invention, by limiting P and NH to a low range, grain boundary embrittlement and precipitation of coarse carbides within the grains can be prevented, and electron beam welding The present invention provides an economical steel for pressure vessels with a high degree of toughness, and has great industrial effects.
第１図は電子ビーム溶接部のシャルピー面繋試験値に及
ぼすＰ量とＮｆｆ１の影響を示す図である。FIG. 1 is a diagram showing the influence of the amount of P and Nff1 on the Charpy surface connection test value of an electron beam welded part.
Claims (1)
ることを特徴とする電子ビーム溶接特性の優れた圧力容
器用鋼。 ２、重量％で、 Ｃ：０．１７〜０．３５％ Ｓｉ：０．０５〜０．４５％ Ｍｎ：０．６〜１．７０％ Ｐ≦０．０１０％ Ｓ≦０．０１０％ Ａｌ：０．００５〜０．０４０％ Ｎ≦０．００６％ を基本成分とし、さらに、 Ｃｕ≦１．０％ Ｎｉ≦１．２％ Ｃｒ≦１．０％ Ｍｏ≦０．７％ Ｎｂ≦０．１％ Ｖ≦０．１％ からなる強度改善元素群のうちの１種または２種以上 残部Ｆｅ、及び不可避的不純物からなることを特徴とす
る電子ビーム溶接特性の優れた圧力容器用鋼。[Claims] 1. In weight%: C: 0.17-0.35% Si: 0.05-0.45% Mn: 0.6-1.70% P≦0.010% S≦ 0.010% Al: 0.005-0.040% N≦0.006% as a basic component, with the balance consisting of Fe and inevitable impurities. Steel for pressure vessels with excellent electron beam welding properties. . 2. In weight%, C: 0.17-0.35% Si: 0.05-0.45% Mn: 0.6-1.70% P≦0.010% S≦0.010% Al: The basic components are 0.005-0.040% N≦0.006%, and further Cu≦1.0% Ni≦1.2% Cr≦1.0% Mo≦0.7% Nb≦0.1 % V≦0.1% A steel for pressure vessels having excellent electron beam welding properties is characterized in that the remainder is Fe and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22748188A JPH0277557A (en) | 1988-09-13 | 1988-09-13 | Steel for pressure vessel excellent in electron beam welding characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22748188A JPH0277557A (en) | 1988-09-13 | 1988-09-13 | Steel for pressure vessel excellent in electron beam welding characteristic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0277557A true JPH0277557A (en) | 1990-03-16 |
| JPH0588297B2 JPH0588297B2 (en) | 1993-12-21 |
Family
ID=16861557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22748188A Granted JPH0277557A (en) | 1988-09-13 | 1988-09-13 | Steel for pressure vessel excellent in electron beam welding characteristic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0277557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013060724A1 (en) * | 2011-10-26 | 2013-05-02 | Rud Ketten Rieger & Dietz Gmbh U. Co. Kg | Hardening steel for lifting, fastening, clamping and/or lashing means and connecting elements, component for lifting, fastening, clamping and/or lashing technology, connecting element and method for production thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210817A (en) * | 1975-07-10 | 1977-01-27 | Nippon Steel Corp | Steel sheet having excellent toughness for pressure vessel of atomic f urnace |
| JPS5254611A (en) * | 1975-10-31 | 1977-05-04 | Nippon Kokan Kk <Nkk> | Steel for lrge heat input welding |
| JPS57116755A (en) * | 1981-01-08 | 1982-07-20 | Sumitomo Metal Ind Ltd | High tensile structural steel for pressure vessel |
| JPS5896854A (en) * | 1981-12-07 | 1983-06-09 | Kawasaki Steel Corp | High toughness steel for pressure vessel |
-
1988
- 1988-09-13 JP JP22748188A patent/JPH0277557A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210817A (en) * | 1975-07-10 | 1977-01-27 | Nippon Steel Corp | Steel sheet having excellent toughness for pressure vessel of atomic f urnace |
| JPS5254611A (en) * | 1975-10-31 | 1977-05-04 | Nippon Kokan Kk <Nkk> | Steel for lrge heat input welding |
| JPS57116755A (en) * | 1981-01-08 | 1982-07-20 | Sumitomo Metal Ind Ltd | High tensile structural steel for pressure vessel |
| JPS5896854A (en) * | 1981-12-07 | 1983-06-09 | Kawasaki Steel Corp | High toughness steel for pressure vessel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013060724A1 (en) * | 2011-10-26 | 2013-05-02 | Rud Ketten Rieger & Dietz Gmbh U. Co. Kg | Hardening steel for lifting, fastening, clamping and/or lashing means and connecting elements, component for lifting, fastening, clamping and/or lashing technology, connecting element and method for production thereof |
| EP2732060B1 (en) * | 2011-10-26 | 2017-12-06 | RUD Ketten Rieger & Dietz GmbH u. Co. KG | Hardening steel for lifting, tensioning and / or load securing devices and fasteners, component and method for producing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0588297B2 (en) | 1993-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5744782A (en) | Advanced consumable electrodes for gas metal arc (GMA) welding of high strength low alloy (HSLA) steels | |
| WO1997032684A9 (en) | Consumable electrodes for gma welding of hsla steels | |
| JPH09157787A (en) | High tensile strength steel for welding excellent in toughness in very large heat input welded heat affected zone | |
| KR100709521B1 (en) | Welding joint of large heat input welding and welding method thereof | |
| JPH0443977B2 (en) | ||
| US10384315B2 (en) | High strength welding consumable based on a 10% nickel steel metallurgical system | |
| JPS593537B2 (en) | welded structural steel | |
| JPH0277557A (en) | Steel for pressure vessel excellent in electron beam welding characteristic | |
| JP2002224835A (en) | Method of welding high toughness high tension steel having excellent weld heat influence zone toughness | |
| CN114555283A (en) | Wire rod for welding rod and method for manufacturing same | |
| JP2898447B2 (en) | Steel plates for pressure vessels with excellent electron beam welding characteristics | |
| JPH0598394A (en) | High v-containing high nitrogen ferritic heat resistant steel and its manufacture | |
| JPH08337813A (en) | Production of high chromium ferritic steel excellent in creep characteristic of welded joint | |
| JPH093600A (en) | Steel for welding structure excellent in toughness weld heat affected zone | |
| JPH068487B2 (en) | Ferritic heat resistant steel with excellent toughness at weld bond | |
| JPH0598393A (en) | High nb-containing high nitrogen ferritic heat resistant steel and its manufacture | |
| JP2889022B2 (en) | Steel for pressure vessels with excellent electron beam welding properties | |
| JPH08277440A (en) | Production of high strength steel excellent in stress corrosion cracking resistance in electron beam weld zone and steel structural body thereof | |
| JPH06145791A (en) | Production of plate of low alloy high tensile strength steel excellent in characteritic in resistance weld zone | |
| JPH0534415B2 (en) | ||
| JPH05105983A (en) | Production of steel for welding structure excellent in toughness in weld zone | |
| JPH07323392A (en) | Low hydrogen type coated arc electrode and welding method | |
| JP2891805B2 (en) | Structural steel with excellent electron beam welding properties | |
| JPH0534416B2 (en) | ||
| SU1116092A1 (en) | Steel |