JPS60121098A - Prevention of hydrogen peeling crack in build-up welding of austenitic stainless steel - Google Patents
Prevention of hydrogen peeling crack in build-up welding of austenitic stainless steelInfo
- Publication number
- JPS60121098A JPS60121098A JP22846083A JP22846083A JPS60121098A JP S60121098 A JPS60121098 A JP S60121098A JP 22846083 A JP22846083 A JP 22846083A JP 22846083 A JP22846083 A JP 22846083A JP S60121098 A JPS60121098 A JP S60121098A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- hydrogen
- stainless steel
- austenitic stainless
- build
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
Abstract
Description
【発明の詳細な説明】
技術分野
オーステナイト系ステンレス鋼肉盛り溶接を内面に施し
た炭素鋼又は低合金鋼製圧力容器におけする水素脆性割
れの有利な回避に関してこの明細書で述べる技術内容は
、この柚の肉盛り溶接技法の有利な改良を与えようとす
るものである。DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The technical subject matter described herein relates to the advantageous avoidance of hydrogen embrittlement cracking in carbon steel or low-alloy steel pressure vessels internally coated with austenitic stainless steel build-up welds. It is intended to provide an advantageous improvement of this overlay welding technique.
背景技術
石油精製工業における直接脱硫装置や、ハイドロクラッ
カーなどの反応容器内面には耐食性を考慮し、オーステ
ナイトステンレス鋼が肉盛り溶接される。Background Art In consideration of corrosion resistance, austenitic stainless steel is overlay-welded to the inner surface of reaction vessels such as direct desulfurization equipment and hydrocrackers in the oil refining industry.
これらの反応容器は、高温高圧水素雰囲気で使用される
ため、その間母材および肉盛り金属中に水素が吸蔵され
る。そこでシャットダウンの冷却時に母材と肉盛り金属
の境界部に水素が濃化することに起因した水素脆性割れ
（以下水素はく少割れという）が発生することがあり、
問題となっている。また今後の石炭液化装置の反応容器
などでは更に厳しい水素雰囲気で使用されるため耐水素
はぐり割れ性の良好な肉盛り溶接方法が望まれている０
従来技術と問題
さて耐水素はく９割れに対しては特開昭５４−７１７４
６号公報にフェライト系ステンレス鋼ｋ 一層目に肉盛
りする方法、また特開昭５４−１０７４５８号公報に母
材と同じ成分系でＮｂ ’１含有する肉盛り金属を一層
目に溶接する方法、さらに特開昭５５−１１７５６２号
公報には、マルテンサイト’に含むオーステナイト系ス
テンレス鋼の肉盛り溶接を行う方法がそれぞれ開示され
ている０
しかしこれらの方法は全て２層盛りを基本とし、耐腐食
性の考慮において０ｒ１８重量係（以下単にチで示す〕
以上を含むオーステナイト系ステンレス鋼を２層目に肉
盛溶接しなければならず・ここに必要な溶接材、＋４費
、溶接施工時間が厖大となる不利が著しい。Since these reaction vessels are used in a high-temperature, high-pressure hydrogen atmosphere, hydrogen is occluded in the base material and overlay metal. Therefore, hydrogen embrittlement cracking (hereinafter referred to as hydrogen flaking cracking) may occur due to the concentration of hydrogen at the boundary between the base metal and overlay metal during cooling during shutdown.
This has become a problem. In addition, since reaction vessels of future coal liquefaction equipment will be used in even more severe hydrogen atmospheres, a build-up welding method with good resistance to hydrogen cracking is desired. For Japanese Patent Publication No. 54-7174
No. 6 describes a method of overlaying the first layer of ferritic stainless steel k, and JP-A-54-107458 describes a method of welding a build-up metal containing Nb'1 in the first layer with the same composition as the base metal. Furthermore, JP-A-55-117562 discloses a method for overlay welding of austenitic stainless steel containing martensite. However, all of these methods are based on two-layer welding and are corrosion-resistant. Considering gender, 0r18 weight ratio (hereinafter simply indicated by ``chi'')
The austenitic stainless steel containing the above must be overlay welded to the second layer, and there is a significant disadvantage in that the required welding material, +4 cost, and welding time are enormous.
一層盛り溶接で耐水素はくり割れの良好な肉盛り方法が
望まれる所以である０
発想の端緒
発明者らは肉盛り金属の化学成分が耐水素はく９割れ性
に及ぼす影響について検討し、その結果第１層目の肉盛
り金属化学成分のうちでＮ量が耐水素はぐり割れ性に大
きく影響し内盛シ金属のＮ°量が０．０８％以上を含む
肉盛９溶接を行えば面１水素１はくり割れ性が改善され
ることを見い出した。This is why a build-up method with good resistance to hydrogen flaking and cracking in single-layer build-up welding is desired.O Origin of the ideaThe inventors studied the influence of the chemical composition of build-up metal on the resistance to hydrogen flaking and cracking. As a result, the amount of N in the chemical components of the build-up metal in the first layer has a large effect on the hydrogen cracking resistance. It has been found that surface 1 hydrogen 1 has improved chipping resistance.
この実験の内容についてまず説明する。First, the contents of this experiment will be explained.
板厚１００ ｍｍの２′／４Ｏｒ−ＩＭ。鋼板上（（、
表１のごとく肉盛り金属のＮ量全０．０２１８〜Ｑ、２
４５％の範囲にわたり種々に変えたＳＵＳ ８０８タイ
プのオーステナイト系ステンレス鋼を１層盛り肉盛り溶
接した試験片を作製したＯ
ことに用いた溶接方法は、現在広く使用されている帯状
電極（ＳＵＳ ８０９ Ｌ ０．４Ｘ ７５７１Ｌｍ
）による水平エレクトロスラグ肉盛り溶接とし、肉盛９
金椙のＮ量は表２に示したＮ量の異なるＳＵＳ ８０９
Ｌ（ＷｌおよびＷＺ）と、窒化マンガン鉄および窒化ク
ロムを添加した高ＧａＦ２タイグ（ＧａＦ、５２％。2'/4Or-IM with a plate thickness of 100 mm. On the steel plate ((,
As shown in Table 1, the total N amount of overlay metal is 0.0218 to Q, 2
Test specimens were prepared by welding a single layer of SUS 808 type austenitic stainless steel with various changes over a range of 45%.The welding method used was a strip electrode (SUS 809 L 0.4X 7571Lm
) horizontal electroslag overlay welding, and overlay 9
The N content of Kanasu is SUS 809 with different N content shown in Table 2.
L (Wl and WZ) and high GaF2 TiG (GaF, 52%) with addition of manganese iron nitride and chromium nitride.
Ａｌ２Ｏ，ｌ ％、Ｓｉｎ、 １２％、０ａ０１１％）
の焼成型フラックスとの組合せによシ調整した。Al2O, l%, Sin, 12%, 0a011%)
It was adjusted by combining it with the firing type flux.
表１に示す化学成分になる肉盛ｐ試験片は、６９５℃×
２０時間の熱処理後、４０７７１１ｇ Ｘ ５Ｑ ｍｍ
”Ｘ １００ ｍｍ’に加工後５００℃Ｘ ２００ ｋ
Ｖ／ｃＩｎ の水素雰囲気のオートクレーブにて２４時
間水素チャージを行い、空冷後、７２時間たってから超
音波探傷により水素はくり割れの有無を確認した。The overlay p test piece with the chemical composition shown in Table 1 is 695℃×
After 20 hours of heat treatment, 407711g x 5Q mm
500℃ x 200k after processing to ``X 100mm''
Hydrogen charging was carried out in an autoclave in a hydrogen atmosphere of V/cIn for 24 hours, and after air cooling, the presence or absence of hydrogen cracking was confirmed by ultrasonic flaw detection after 72 hours.
その結果の１例を宍１に掲げたように肉盛り金棺のＮ量
が０．０８％未満では水素はくう割れが発生するのに反
し、Ｏ，ＯＳ〜０．２０ ％の範囲では発生しないこと
が判明し、これは母材からの浸炭により生じる粒界−の
炭化物析出がＮによって抑制されたためとみられるが、
Ｎ量が０．２００ ％をこえると肉盛金属中にブローホ
ールが発生し、好１しくないことが明らかとなったので
ある。As shown in Shishi 1, an example of the results shows that hydrogen cracks occur when the amount of N in a metal overlay metal coffin is less than 0.08%, but cracks occur when the amount of N in the overlay metal coffin is less than 0.08%. It was found that this was because N suppressed carbide precipitation at grain boundaries caused by carburization from the base metal.
It has become clear that if the N content exceeds 0.200%, blowholes will occur in the overlay metal, which is not desirable.
発明の目的
上記知見に基き、オーステナイト系ステンレス鋼の肉盛
９溶接に↓るライニング−が施されて水素雰囲気で使用
される圧力容器類における水素はくり割れのとくに有利
な解決を与えることが、この発明の目的である。OBJECT OF THE INVENTION Based on the above findings, it is an object of the present invention to provide a particularly advantageous solution to hydrogen cracking in pressure vessels used in a hydrogen atmosphere by applying a lining to the overlay welds of austenitic stainless steel. This is the object of this invention.
発明の構成
この発明は、炭素鋼又は低合金鋼を主体に組立てた圧力
容器の内面にオーステナイト系ステンレス鋼を肉盛シ溶
接するに当たり、該肉盛り溶接層１）１０：０．１％以
下、Ｓｉ ： １．０ ％Ｕ下、Ｍｎ ： ８．０チ以
下、Ｑｒ ： １７．Ｏ〜２８．０％、Ｎｘ ： ７．
Ｕ 〜１５．０チ、ＭＯ： ０．４％以下オヨびＮｂ
； １，０％以下、全含み、かつＮ ： ０．０８〜０
．２０％を含有する組成に成り）しかも下記式により計
算されたデルタフェライト−ｉＦが−２，０〜２０．０
俤となるものとするこ°とから成るオーステナイト系ス
テンレス鋼肉盛シ溶接における水素はぐり割れ防止方法
である。Structure of the Invention The present invention provides a method for overlay welding austenitic stainless steel onto the inner surface of a pressure vessel mainly made of carbon steel or low alloy steel, in which the overlay weld layer 1) is 10:0.1% or less; Si: 1.0% U or less, Mn: 8.0% or less, Qr: 17. O~28.0%, Nx: 7.
U ~15.0chi, MO: 0.4% or less and Nb
; 1.0% or less, all included, and N: 0.08-0
．． 20%) and delta ferrite-iF calculated by the following formula is -2.0 to 20.0.
This is a method for preventing hydrogen cracking in overlay welding of austenitic stainless steel.
Ｆ’＝３．２ｘＯｒ、−２，５ＸＮ１６ｑ −２４，７
ここに１元素配号？併記した係記号にて、その元素の成
分量を重量％であられすものとして、０ｒｏｑ−チ央十
％Ｍ。＋ １．５ Ｘ ＳＳｉ＋０．５ Ｘ％ＮｂＮ１
ｅｑ−％Ｎ４＋３ｕｘ％Ｏ＋１３ＵＸ％Ｎ＋０．５Ｘ％
都とする。F'=3.2xOr, -2,5XN16q -24,7
One element arrangement here? The accompanying symbol indicates the amount of the element in weight%: 0roq - 10%M. + 1.5 X SSi+0.5 X%NbN1
eq-%N4+3ux%O+13UX%N+0.5X%
Make it the capital.
この発明においてオーステナイト系ステンレス鋼肉盛り
溶接層の成分組成を限定する理由は次のとおりである。The reason for limiting the composition of the austenitic stainless steel build-up weld layer in this invention is as follows.
Ｏｆは・多くなるほど耐食性を劣化させるので０．１係
以下に制限する必要がある。Since the corrosion resistance deteriorates as the value of Of increases, it is necessary to limit it to a factor of 0.1 or less.
５ｉｆｉ−は、溶接時の脱酸作用に有効であり、溶接ス
ラグからの還元作用でも混入するが、多過ぎるとシグマ
相脆化を促進させ、耐食性も劣化させるため、１．０係
以下に押える必要がある。5ifi- is effective in deoxidizing action during welding, and is also mixed in by the reducing action from welding slag, but if it is too large, it promotes sigma phase embrittlement and deteriorates corrosion resistance, so it should be kept below a coefficient of 1.0. There is a need.
Ｍｎ量は、溶接時の耐高温割れ性の面で寄与するが、多
過ぎると機械的性質が低下するため８．０係以下に定め
た。The amount of Mn contributes to the hot cracking resistance during welding, but if it is too large, the mechanical properties deteriorate, so it is set to a coefficient of 8.0 or less.
Ｃｒ量は、４食性のため１７．０％以上を必要とするが
、２８．０％をこえると熱処理を行な゛うとシグマ相脆
化がおこるため２８．０％以下にする必要があるＯ
Ｎｉ景は、耐食性のため７．０％以上必袂であるが、１
５．０ ％ ’ｇこえると完全オーステナイト組織とな
り１溶接時に高温割れをおこしやすくなるため、１５．
０％以下にする必要がめる。The amount of Cr needs to be 17.0% or more because it is tetraphagous, but if it exceeds 28.0%, sigma phase embrittlement will occur if heat treatment is performed, so it needs to be less than 28.0%. For Ni-kei, 7.0% or more is required for corrosion resistance, but 1
If it exceeds 5.0%'g, the structure becomes completely austenitic and hot cracking is likely to occur during one welding, so 15.
It is necessary to keep it below 0%.
Ｍｏは鋼板からの希釈により肉盛り金属中に含まれるこ
とがあるが、多過ぎるとシグマ相脆化を促進するため０
．４−以下に定めた。Mo may be included in the overlay metal by dilution from the steel plate, but if it is too much, it promotes sigma phase embrittlement, so it is
．． 4- As defined below.
Ｎｂは、とくに低炭素の場合には効ＪＰ：は少ないｌこ
め腐食環境によっては、積極的に添加しないことが多い
。しかし炭素量が多く、かつ腐食環境の厳しい場合には
、Ｎｂを積極的に添加し、炭素全炭化Ｎｂで固定させる
ことがある。この場合のＮｂ童は８×Ｃチ以上は必要で
あるが、１．０％をこえるとシグマ相脆化を生じるため
、１．０％以下に制限する。Nb has little effect, especially in the case of low carbon, and is often not actively added depending on the corrosive environment. However, when the amount of carbon is large and the corrosive environment is severe, Nb may be actively added to fix the carbon with fully carbonized Nb. In this case, the Nb content is required to be 8×C or more, but if it exceeds 1.0%, sigma phase embrittlement occurs, so it is limited to 1.0% or less.
Ｈｆ４についてはすでにのべｌｃところに従い０．０８
〜０．２０係の範囲が必要である。As for Hf4, it is already 0.08 according to lc.
A range of 0.20 to 0.20 is required.
次にデルタフェライト量は、溶接時の高温割れン：防止
するために必要であって、下記式からめたフェライト量
Ｆが−２，０％以上あれば高温割れは発生しない、−万
Ｆが＋２０．０チをこえるとシグマ相の生成が促進し熱
処理によシ脆化するためＦ≦Ｈ，Ｏｑｂにする必要があ
る。Next, the amount of delta ferrite is necessary to prevent high temperature cracking during welding, and based on the formula below, if the amount of ferrite F is -2.0% or more, high temperature cracking will not occur. If it exceeds .0, the formation of sigma phase will be promoted and the heat treatment will cause embrittlement, so it is necessary to satisfy F≦H, Oqb.
Ｆ＝ ８．２ｘＯｒ、−２，５ＸＮｉｅｑ−２４，７た
だし
Ｃｒｅｑ ” ％ Ｏｒ＋％Ｍｏ＋１．５Ｘ％Ｓｉ＋０
．５Ｘ％ＮｂＮｉ、ｑ＝ＪＮｉ＋８０Ｘ％０＋８０Ｘ％
Ｎ＋０．５Ｘ％Ｍ。F= 8.2xOr, -2,5XNieq-24,7 However, Creq "% Or+%Mo+1.5X%Si+0
．． 5X%NbNi, q=JNi+80X%0+80X%
N+0.5X%M.
とし、元素記号を併記した係記号は、核元素の成分量を
指すものとする。The symbol with the element symbol indicates the amount of the nuclear element.
さて炭素鋼又は低合金鋼とオーステナイト系ス°テンレ
ス鋼のような異種金属の肉盛り溶接では、溶接方法や溶
接条件の如何によって母材の希釈率が変υ、肉盛り金属
の化学成分も影響されるが、とくに帯状電極を用いた上
掲エレクトロスラグ溶ｉ （ＥＳＷ）のほか、同様の帯
状電極を用いるサブマージアーク溶接（ＳＡＷ）法や、
被着アーク溶接（ＳＭＡＷ ）法において溶接条件にち
がいはあっても母材上への肉盛シ金属の化学成分および
デルタフェライト量がこれらにつきすでに掲げた範囲内
であれば耐水素はくシ割れ性に効果がみられた。Now, in overlay welding of dissimilar metals such as carbon steel or low alloy steel and austenitic stainless steel, the dilution ratio of the base metal varies depending on the welding method and welding conditions, and the chemical composition of the overlay metal also has an effect. In particular, in addition to the above-mentioned electroslag welding (ESW) method using a strip-shaped electrode, submerged arc welding (SAW) method using a similar strip-shaped electrode,
In the deposited arc welding (SMAW) method, even if the welding conditions are different, as long as the chemical composition of the metal deposited on the base metal and the amount of delta ferrite are within the ranges listed above, the hydrogen foil will not crack. Effects were seen on sex.
なおこの発明でとくに重要なＮの添加方法としては、帯
状電極や溶接用ワイヤのＮ量全多くすることまたこれに
加えて、組合せフラックスや被覆剤中に窒化物を添加す
ることによって、肉盛り金属のＮ量を調整しても効果は
同じであった。In addition, the method of adding N that is particularly important in this invention is to increase the total amount of N in the strip electrode and welding wire, and in addition to this, by adding nitrides to the combination flux and coating material, Even if the amount of N in the metal was adjusted, the effect was the same.
添加する窒化物としては、さきに述べｆＣ，重化マンガ
ン鉄や窒化クロムの他に、窒化けい素、石灰窒素など一
肉盛り金属の化学成分を満足できる窒化物であれば全て
使用できる。As for the nitride to be added, in addition to fC, heavy manganese iron, and chromium nitride mentioned above, any nitride that can satisfy the chemical composition of the one-layer metal, such as silicon nitride and lime nitrogen, can be used.
実 施 例
４皮厚ＩＬＩＯｍｍのＡＳＴＭ Ａ３８７ Ｇｒ ２２
Ｃ１ｇの２／４Ｃｒ−ＩＭ。銅板に表２の化学成分の
肉盛り金属を一層盛りおよび２層盛りにて肉＆９溶接し
た０溶接方法は、帯状電極（０，４Ｘ １５（ｌＬ？ｉ
） ｋ用いたエレクトロスラグ肉盛り溶接（ＥＳＷ）
、また帯状電極（０，４ｘ７５ｍｍ）を用いたサブマー
ジアーク肉盛り溶接（ＳＡＷ ）および被覆アーク溶接
（ＳＭＡＷ）の８種類を適用しｆｃ。Example 4 ASTM A387 Gr 22 with skin thickness ILIOmm
2/4 Cr-IM of C1g. The welding method is one-layer and two-layer welding of overlay metal with the chemical composition shown in Table 2 on a copper plate.
) electroslag overlay welding (ESW) using
In addition, eight types of submerged arc overlay welding (SAW) and shielded arc welding (SMAW) using a strip electrode (0.4 x 75 mm) were applied.
なおＥＳＷおよびＳＡＷに用いた帯状電極は表２におい
てすでに掲げたＷＢ〜Ｗ８を用いた。Note that the strip electrodes WB to W8 listed in Table 2 were used for ESW and SAW.
次にｂ；ｓｗの７ラツクスはＯａＦ ５５ ％ Ｓｌ！
２０８１９％、５ｉｎ−１％ 、 Ｏａｏ １８ ％
ｋ主成分とする原料后・溶製、粉砕し、２ＵＸ１５０メ
ツシユに整粒した溶融型フラックスと、ＯａＦ、５０％
、ＡＪ２０８２５飴、Ｓ１０１０％、Ｍ、０１０％が主
成分で窒化クロム粉を４％添加して水ガラスで造粒、焼
成し、１１Ｘ２００メツシユに整粒した焼成型フラック
スの２種類を用いた。Next, b; sw 7 lux is OaF 55% Sl!
20819%, 5in-1%, Oao 18%
After the raw material as the main component, melted flux, pulverized and sized into 2UX150 mesh, OaF, 50%
, AJ20825 candy, 10% S, 10% M, 010% as main components, 4% chromium nitride powder added, granulated with water glass, fired, and sized to a 11x200 mesh were used.
またＳＡＷ用のフラックスはＭｙ０８０％、ａａＯ２０
係、ＡＩ！２０８２０％、ｓｉｏ、２０％、ＧａＦ２５
％ −（ｒ主成分とする焼成型フラックスを用いた。Also, the flux for SAW is My080%, aaO20
Person in charge, AI! 20820%, sio, 20%, GaF25
% −(r) A sintered flux was used as the main component.
帯状電極を用いた肉盛り溶接の溶接条件は、ＥＳＷ Ｓ
ＡＷともに溶接電流１２００〜２５００ Ａ Ｘ電圧２
５〜８０Ｖ溶接速度１５〜２８ ｃｎ１／分で行った。The welding conditions for build-up welding using a strip electrode are ESW S
Welding current 1200 to 2500 for both AW and A X voltage 2
The welding was carried out at a welding speed of 15 to 28 cn1/min at 5 to 80V.
被覆アーク溶接は、石灰窒素を５係添加したライム系の
ＪＩＳＤ ８０９Ｌ、 ４．０ｍｍφ（７１）ステ７レ
ス鋼被覆アーク溶接棒を用い、溶接電流１５０Ａで溶接
を行った。Covered arc welding was performed at a welding current of 150 A using a lime-based JISD 809L, 4.0 mmφ (71) stainless steel coated arc welding rod with 5 parts of lime nitrogen added.
上記各肉盛り溶接施工層の鋼板は、何れも６９５℃Ｘ２
０時間の熱処理後、水素はくり割れ試験片・ＡＳＭＥ
Ｓｅａ ＩＸによる側曲げ試験片およびＪＩＳ Ｇ。The steel plates for each build-up welding layer above are 695℃
After 0 hours of heat treatment, hydrogen cracking test piece/ASME
Side bending test piece according to Sea IX and JIS G.
５７りにもとすく硫酸−硫酸銅腐食試験片を採取し、各
種試験に供した。A sulfuric acid-copper sulfate corrosion test piece was taken from the 57th grade and subjected to various tests.
試験片の一般形状を第１図に示し、１は肉盛り金属、２
は母材（Ａ ８８７ Ｇｒ２２ ） テ；６ ル。The general shape of the test piece is shown in Figure 1, where 1 is built-up metal, 2
is the base material (A 887 Gr22).
なお水素はくり割れ試験は５００℃・２００ ｋ４／ｌ
ｙｎの水素雰囲気のオートクレーブ内で２４時間水素チ
ャージを行ない、空冷後超音波探傷法によりはくり割れ
の有無について確認を行ったＯ
各試験片の肉盛シ金属の化学成分とデルタフェライト量
Ｆを表８に掲げ、各試験の結果を表４に示す〇
笑施例Ｂｌ−Ｂ６では溶接方法、肉盛り層数に関係なく
、水素はぐり割れはなく、側曲は試験結果、腐食試験結
果ならびに溶接性ともに良好であって、健全な肉盛り金
属が得らねだ。The hydrogen cracking test was conducted at 500°C and 200 k4/l.
Hydrogen was charged in an autoclave with hydrogen atmosphere for 24 hours, and after cooling in air, the presence or absence of peeling and cracking was confirmed by ultrasonic flaw detection. The results of each test are listed in Table 8, and the results of each test are shown in Table 4. In Example Bl-B6, there was no hydrogen cracking regardless of the welding method or the number of build-up layers, and the side bending was determined by the test results, corrosion test results, and welding. Both properties are good and a sound overlay metal can be obtained.
これに対し比較例のＢ７はＮ創不足で水素はぐり割れ金
生じ、Ｂ８はＮ ｉ過多でブローホールができ、またＢ
９はＮｉ、Ｏｒ不足のため、粒界腐食割れ′ｆｒ：起し
、さらにＢＩＯは、Ｑｒ過多のため側曲げ試験で開口割
れを来し、Ｂ１１は第１層のテルタラエライ）Ｆ値が低
すぎて１高温割ｉ″Ｌ全生じた。On the other hand, in the comparative example B7, hydrogen cracking occurred due to lack of N holes, and in B8, blowholes were formed due to excessive Ni.
9 caused intergranular corrosion cracking due to lack of Ni and Or, BIO caused open cracking in the side bending test due to excessive Qr, and B11 had too low F value of the first layer. At 1 high temperature, a total of i″L was generated.
発明の効果
この発明によればオーステナイト系ステンレス鋼肉盛り
溶接によるライニングの必要性能に何らの問題もなく、
水素はくシ割れの的確な防止が実現される０Effects of the Invention According to this invention, there is no problem with the required performance of the lining made by overlay welding of austenitic stainless steel.
Accurate prevention of hydrogen foil cracking is achieved.
第１図は試験片の外観図である。 FIG. 1 is an external view of the test piece.
Claims (1)
面にオーステナイト系ステンレス鋼を肉盛り溶接するに
当たシ、該肉盛ｐ溶接層が ｃ：ｏ、’を車量％以下 Ｓ土：１．０重量％以下 Ｍｎ：８．ｏ重量係以下 Ｏｒ ： １７．０〜２８．０重量係 Ｎｉニア、ｏ〜１５．０重量係 ＭＯ： ０．４重量ｑｂ以下および Ｎｂ ： １．０重量％以下 全含みかつＮ ： ０．０８〜０．２０重量％を含有す
る組成に成り、しかも下記式によシ計算されたデルタフ
ェライトｉ−Ｆが−２，０〜２Ｕ、Ｏ％となるものとす
ることを特徴とするオーステナイト系ステンレス鋼肉盛
り溶接における水素はくり割れ防止方法 記 Ｆ −ｓ、ｚ−×ａｒｏｑ−２，５Ｘ Ｎ１ｏｑ−２４
，７ここに、元素記号を併記した％記号にて、その元素
の成分量を重量％であられすものとして、 Ｏｒ ｅ ｑ−％Ｑｒ十％ＭＯ＋１．５Ｘ％Ｓｉ＋ｏ、
５ｘ％ＮｂＮｉ、−％Ｎｉ十ａｏｘ％Ｏ＋８０Ｘ％Ｎ＋
０．５Ｘ％Ｍｎとする。[Claims] 1. When overlaying austenitic stainless steel on the inner surface of a pressure vessel made of carbon steel or low alloy steel assembled into a living body, the overlay p welding layer has c:o,'. Vehicle weight % or less S soil: 1.0 weight % or less Mn: 8. o weight ratio or less Or: 17.0 to 28.0 weight ratio Ni near, o to 15.0 weight ratio MO: 0.4 weight qb or less and Nb: 1.0 weight% or less, all included and N: 0.08 An austenitic stainless steel having a composition containing ~0.20% by weight and a delta ferrite i-F calculated by the following formula of -2.0 to 2U, O%. Method for preventing hydrogen cracking in steel overlay welding F-s, z-xaroq-2, 5X N1oq-24
,7 Here, the component amount of the element is expressed in weight% using the % symbol with the element symbol, Or e q-% Qr 10% MO + 1.5X% Si + o,
5x%NbNi, -%Ni+aox%O+80X%N+
0.5X%Mn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22846083A JPS60121098A (en) | 1983-12-05 | 1983-12-05 | Prevention of hydrogen peeling crack in build-up welding of austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22846083A JPS60121098A (en) | 1983-12-05 | 1983-12-05 | Prevention of hydrogen peeling crack in build-up welding of austenitic stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60121098A true JPS60121098A (en) | 1985-06-28 |
Family
ID=16876830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22846083A Pending JPS60121098A (en) | 1983-12-05 | 1983-12-05 | Prevention of hydrogen peeling crack in build-up welding of austenitic stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60121098A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6247458A (en) * | 1985-08-26 | 1987-03-02 | Kobe Steel Ltd | Pressure vessel having resistance to hydrogen attack and used in hydrogen atmosphere at high temperature and pressure |
| JP2004324800A (en) * | 2003-04-25 | 2004-11-18 | Nippon Steel Corp | Tank for high pressure hydrogen gas, and piping |
| CN103154291A (en) * | 2010-09-29 | 2013-06-12 | 新日铁住金不锈钢株式会社 | Austenite high-manganese stainless steel, manufacturing method therefor, and member using said steel |
| EP2692887A1 (en) * | 2011-03-31 | 2014-02-05 | Kubota Corporation | Cast austenitic stainless steel |
| EP2737972A1 (en) * | 2012-11-28 | 2014-06-04 | Sandvik Intellectual Property AB | Welding material for weld cladding |
| CN104526167A (en) * | 2014-11-04 | 2015-04-22 | 南方增材科技有限公司 | Electric smelting forming method of hydrogenation reactor barrel |
| WO2015190574A1 (en) * | 2014-06-11 | 2015-12-17 | 株式会社神戸製鋼所 | Buildup welded body |
| WO2015190534A1 (en) * | 2014-06-11 | 2015-12-17 | 株式会社神戸製鋼所 | Buildup welded metal and machine structure |
| WO2016143509A1 (en) * | 2015-03-10 | 2016-09-15 | 株式会社神戸製鋼所 | Build-up welding metal and mechanical structure |
| CN111266713A (en) * | 2020-03-09 | 2020-06-12 | 武汉一冶钢结构有限责任公司 | Deposited metal material for ultralow-temperature 304L austenitic stainless steel welding and preparation method |
-
1983
- 1983-12-05 JP JP22846083A patent/JPS60121098A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6247458A (en) * | 1985-08-26 | 1987-03-02 | Kobe Steel Ltd | Pressure vessel having resistance to hydrogen attack and used in hydrogen atmosphere at high temperature and pressure |
| JP2004324800A (en) * | 2003-04-25 | 2004-11-18 | Nippon Steel Corp | Tank for high pressure hydrogen gas, and piping |
| JP4700263B2 (en) * | 2003-04-25 | 2011-06-15 | 新日本製鐵株式会社 | High-pressure hydrogen gas tank and piping |
| CN103154291A (en) * | 2010-09-29 | 2013-06-12 | 新日铁住金不锈钢株式会社 | Austenite high-manganese stainless steel, manufacturing method therefor, and member using said steel |
| EP2692887A1 (en) * | 2011-03-31 | 2014-02-05 | Kubota Corporation | Cast austenitic stainless steel |
| EP2692887A4 (en) * | 2011-03-31 | 2015-01-21 | Kubota Kk | Cast austenitic stainless steel |
| EP2737972A1 (en) * | 2012-11-28 | 2014-06-04 | Sandvik Intellectual Property AB | Welding material for weld cladding |
| WO2014083009A1 (en) * | 2012-11-28 | 2014-06-05 | Sandvik Intellectual Property Ab | Welding material for weld cladding |
| US10807203B2 (en) | 2012-11-28 | 2020-10-20 | Esab Sweden Ab | Welding material for weld cladding |
| WO2015190534A1 (en) * | 2014-06-11 | 2015-12-17 | 株式会社神戸製鋼所 | Buildup welded metal and machine structure |
| WO2015190574A1 (en) * | 2014-06-11 | 2015-12-17 | 株式会社神戸製鋼所 | Buildup welded body |
| JP2016000411A (en) * | 2014-06-11 | 2016-01-07 | 株式会社神戸製鋼所 | Padding body |
| JP2016000412A (en) * | 2014-06-11 | 2016-01-07 | 株式会社神戸製鋼所 | Padding metal, and mechanical structure |
| CN104526167B (en) * | 2014-11-04 | 2016-08-17 | 南方增材科技有限公司 | Hydrogenation reactor cylinder electric smelting manufacturing process |
| CN104526167A (en) * | 2014-11-04 | 2015-04-22 | 南方增材科技有限公司 | Electric smelting forming method of hydrogenation reactor barrel |
| WO2016143509A1 (en) * | 2015-03-10 | 2016-09-15 | 株式会社神戸製鋼所 | Build-up welding metal and mechanical structure |
| JP2016165750A (en) * | 2015-03-10 | 2016-09-15 | 株式会社神戸製鋼所 | Build-up welding metal and machine structure |
| CN107405732A (en) * | 2015-03-10 | 2017-11-28 | 株式会社神户制钢所 | Deposited metal and mechanical structure thing |
| CN111266713A (en) * | 2020-03-09 | 2020-06-12 | 武汉一冶钢结构有限责任公司 | Deposited metal material for ultralow-temperature 304L austenitic stainless steel welding and preparation method |
| CN111266713B (en) * | 2020-03-09 | 2021-12-03 | 武汉一冶钢结构有限责任公司 | Deposited metal material for ultralow-temperature 304L austenitic stainless steel welding and preparation method |
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