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JPH0651239B2 - Ni-based alloy powder for powder overlay - Google Patents
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JPH0651239B2 - Ni-based alloy powder for powder overlay - Google Patents

Ni-based alloy powder for powder overlay

Info

Publication number
JPH0651239B2
JPH0651239B2 JP60171605A JP17160585A JPH0651239B2 JP H0651239 B2 JPH0651239 B2 JP H0651239B2 JP 60171605 A JP60171605 A JP 60171605A JP 17160585 A JP17160585 A JP 17160585A JP H0651239 B2 JPH0651239 B2 JP H0651239B2
Authority
JP
Japan
Prior art keywords
powder
less
based alloy
overlay
welding
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.)
Expired - Lifetime
Application number
JP60171605A
Other languages
Japanese (ja)
Other versions
JPS6233089A (en
Inventor
宥公 竹内
雅 永田
繁雄 花嶋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP60171605A priority Critical patent/JPH0651239B2/en
Publication of JPS6233089A publication Critical patent/JPS6233089A/en
Publication of JPH0651239B2 publication Critical patent/JPH0651239B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) この発明は、粉末肉盛溶接に利用される粉末肉盛用Ni
基合金粉末に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention is directed to Ni for powder build-up welding used for powder build-up welding.
The present invention relates to a base alloy powder.

(従来の技術) 基体の表面に耐食・耐熱性あるいは耐摩耗性等を付与
し、また基体表面の前記特性をさらに向上させるため
に、肉盛溶接(Surfacing)を行うことが多
い。
(Prior Art) In order to impart corrosion resistance, heat resistance, wear resistance and the like to the surface of a substrate and to further improve the above-mentioned characteristics of the substrate surface, surfacing is often performed.

この肉盛溶接法としては、種々のものが開発されている
が、とくに粉末を溶加材としかつプラズマアークを熱源
とする粉末肉盛溶接法は、溶加棒を用いる酸素アセチレ
ン溶接法,TIG溶接法などに比較して、高速でかつ自
動化しやすいことから、近年とくに注目を集めるように
なっている。
Although various overlay welding methods have been developed, the powder overlay welding method using a powder as a filler material and a plasma arc as a heat source is particularly an oxygen acetylene welding method using a filler rod, TIG. Compared with the welding method and the like, it has become more and more popular in recent years because it is faster and easier to automate.

この粉末肉盛溶接において使用される合金粉末は、溶
融合金に対してガス噴霧を行ったのちガス中で冷却する
方法、溶融合金に対してガス噴霧を行ったのち液
(水)中で冷却する方法、溶融合金に対して液(水)
噴霧を行う方法、溶融合金に対して遠心力を加える方
法、溶融合金を高速回転するロールの隙間に流下させ
る方法、などによって製造される。
The alloy powder used in this powder build-up welding is a method in which a molten alloy is subjected to gas atomization and then cooled in a gas, and a molten alloy is subjected to gas atomization and then cooled in a liquid (water). Method, liquid against molten alloy (water)
It is manufactured by a method of spraying, a method of applying a centrifugal force to the molten alloy, a method of causing the molten alloy to flow down into a gap of a roll that rotates at a high speed, and the like.

このような粉末製造法において、溶融合金が粉化したの
ちの冷却速度が小さいときには、溶融粉体の表面張力に
よって球状化するが、冷却速度が大きいときには、溶融
粉体が球状化する以前に凝固してしまうので、不規則形
状の粉末となる。
In such a powder production method, when the cooling rate after the molten alloy is pulverized is low, the molten alloy is spheroidized by the surface tension of the molten powder, but when the cooling rate is high, the molten powder is solidified before spheroidizing. As a result, the powder becomes irregularly shaped.

(発明が解決しようとする問題点) ところで、上記した不規則形状の粉末は、その長短比が
大きく、かつ一定していないものであるため、この粉末
を粉末肉盛用の粉末として用いた場合には、当該粉末の
送給性が劣ることとなる。そのため、従来においては、
粉末の送給機構に種々の工夫がなされてきたが、それで
も、粉末の送給むらによるビード形状の不良、例えば、
湯切れ、肉盛金属のビード幅の不均一などの不良が発生
しやすいという問題点があった。
(Problems to be Solved by the Invention) By the way, since the irregularly shaped powder described above has a large length-to-short ratio and is not constant, when this powder is used as a powder for powder overlaying, In this case, the powder feedability will be poor. Therefore, in the past,
Although various improvements have been made to the powder feeding mechanism, nonetheless, a defective bead shape due to uneven powder feeding, for example,
There is a problem that defects such as hot water outage and uneven bead width of the overlay metal are likely to occur.

一方、冷却速度の小さいガス噴霧法により製造した粉末
は、その長短比が小さい球形状をなすため、粉末の送給
性が良好であり、したがってビード形状も良好なものと
なる。
On the other hand, the powder produced by the gas atomization method with a low cooling rate has a spherical shape with a small length-to-short ratio, so that the powder feeding property is good, and thus the bead shape is also good.

しかしながら、ビード形状は良好となるものの、肉盛金
属内にブローホールを生ずることがあるという問題点が
あった。
However, although the bead shape is good, there is a problem that blowholes may occur in the overlay metal.

この発明は、上述した従来の問題点に着目してなされた
もので、粉末の送給性に優れているため、湯切れやビー
ド幅の不均一などの不具合が発生せず、ビード形状が良
好であると同時に肉盛金属中にブローホールが発生しな
い粉末肉盛溶接を行うことが可能である粉末肉盛用Ni
基合金粉末を提供することを目的としている。
This invention has been made by paying attention to the above-mentioned conventional problems, and since it is excellent in powder feedability, problems such as lack of hot water and uneven bead width do not occur, and the bead shape is good. At the same time, it is possible to perform powder overlay welding without generating blowholes in the overlay metal.
The purpose is to provide a base alloy powder.

[発明の構成] (問題点を解決するための手段) この発明による粉末肉盛用Ni基合金粉末は、粉末肉盛
溶接に使用されるNi基合金粉末であって、長短比が
1.5以下の球形状をなし、酸素量が0.01〜0.5
0重量%でかつ窒素量が0.30重量%以下であること
を特徴としている。
[Structure of the Invention] (Means for Solving Problems) The Ni-based alloy powder for powder build-up according to the present invention is a Ni-based alloy powder used for powder build-up welding and has a long / short ratio of 1.5. It has the following spherical shape and an oxygen content of 0.01-0.5.
It is characterized in that the amount of nitrogen is 0% by weight and the amount of nitrogen is 0.30% by weight or less.

この発明による粉末肉盛用Ni基合金粉末は、上述した
ように、酸素量が0.01重量%以上のものであるが、
この理由は、粉末肉盛溶接後の肉盛金属中のブローホー
ルをできるだけなくすためである。そして、肉盛金属中
のブローホールをなくす観点からは粉末中の酸素量は
0.50重量%以下とすれば十分であり、より望ましく
は0.02〜0.10重量%の範囲とする。また、窒素
量は0.30重量%以下とすることによって肉盛金属中
におけるブローホールの発生を低減ないしは解消するこ
とが可能となる。
As described above, the Ni-based alloy powder for powder overlay according to the present invention has an oxygen content of 0.01% by weight or more,
The reason for this is to eliminate blowholes in the overlay metal after powder overlay welding as much as possible. From the viewpoint of eliminating blowholes in the overlay metal, the amount of oxygen in the powder is sufficient to be 0.50% by weight or less, and more preferably 0.02 to 0.10% by weight. Further, by setting the amount of nitrogen to 0.30% by weight or less, it becomes possible to reduce or eliminate the generation of blowholes in the overlay metal.

この発明による粉末肉盛溶接用Ni基合金粉末は、基体
表面の耐摩耗性,耐熱性,耐食性、耐薬品性等を高める
ために粉末肉盛溶接する際に用いられるが、このNi基
合金粉末の好ましい成分範囲としては、重量%でC:
0.01〜3.0%、Si:5.0%以下、Mn:5.
0%以下、P:0.03%以下、S:0.03%以下、
Cu:1.0%以下、Co:10%以下、Cr:8〜4
0%、W:20%以下、Mo:20%以下、B:3.0
%以下、A:3.0%以下、Ti:3.0%以下、F
e:10%以下、N:0.30%以下、O:0.01〜
0.50%、場合によってはさらに、Nb:3.0%以
下、Ta:3.0%以下、V:3.0%以下、Zr:
3.0%以下、残部Niおよび不純物よりなるものがよ
り好ましい。
The Ni-based alloy powder for powder build-up welding according to the present invention is used for powder build-up welding in order to improve the wear resistance, heat resistance, corrosion resistance, chemical resistance, etc. of the surface of a base. The preferred component range of C is:
0.01-3.0%, Si: 5.0% or less, Mn: 5.
0% or less, P: 0.03% or less, S: 0.03% or less,
Cu: 1.0% or less, Co: 10% or less, Cr: 8-4
0%, W: 20% or less, Mo: 20% or less, B: 3.0
% Or less, A: 3.0% or less, Ti: 3.0% or less, F
e: 10% or less, N: 0.30% or less, O: 0.01 to
0.50%, and in some cases, Nb: 3.0% or less, Ta: 3.0% or less, V: 3.0% or less, Zr:
It is more preferably 3.0% or less and the balance Ni and impurities.

この組成において、Cは炭化物を形成して高温強度を高
めるのに有効であるので、より望ましくは0.01%以
上含有させるが、多すぎると靱延性が低下するので、よ
り望ましくは3.0%以下とするのがよく、Siは肉盛
金属中の非金属介在物を減少させるので、より望ましく
は5.0%以下の範囲で添加するのもよく、Mnは肉盛
金属の清浄度を高めるので、より望ましくは5.0%以
下の範囲で添加するのがよく、PおよびSは肉盛金属の
靱性を害するので、より望ましくはいずれも0.03%
以下に規制するのがよい。また、Cuは強度を向上させ
るので1.0%までは添加してもよく、Coは耐食性の
向上に寄与するので10%までは添加してもよい。さら
に、Crは耐食性および耐摩耗性を向上させるので、よ
り望ましくは8%以上添加させるのもよいが、多すぎる
と靱性が低下するので、より望ましくは40%以下とす
るのがよい。さらにまた、Wは耐摩耗性を向上させるの
で20%まで添加してもよく、Moは耐食性および強度
を増大させるので20%までは添加してもよく、Bは強
度を向上させるので3.0%までは添加してもよく、A
は高温強度を高めるので3.0%までは添加してもよ
く、TiはNiおよびAと結合して高温強度を高める
ので、3.0%までは添加してもよく、Feは肉盛金属
の特性を害することなく、粉末のコストを低下させるこ
とができるので10%以下までは添加してもよく、強度
を向上させるためにNbを3.0%以下まで、Taを
3.0%以下まで、Vを3.0%以下まで、Zrを3.
0%以下までそれぞれ添加してもよい。
In this composition, C is effective in forming carbides and increasing the high temperature strength, so it is more preferably contained in an amount of 0.01% or more, but if it is too much, the toughness and ductility deteriorates, so 3.0 is more preferable. % Or less, since Si reduces non-metallic inclusions in the overlay metal, it is more desirable to add it in the range of 5.0% or less. Mn is the cleanliness of the overlay metal. Since it increases, it is more preferable to add it in a range of 5.0% or less. Since P and S impair the toughness of the overlay metal, it is more preferable that both are 0.03%.
The following restrictions are recommended. Further, since Cu improves the strength, it may be added up to 1.0%, and since Co contributes to the improvement of the corrosion resistance, up to 10% may be added. Further, since Cr improves corrosion resistance and wear resistance, it is more preferable to add 8% or more. However, if too much, the toughness decreases. Therefore, it is more preferably set to 40% or less. Furthermore, W improves the wear resistance, so it may be added up to 20%, Mo increases the corrosion resistance and strength, so it may be added up to 20%, and B improves the strength. % May be added, A
Since it enhances the high temperature strength, it may be added up to 3.0%, Ti combines with Ni and A to enhance the high temperature strength, so it may be added up to 3.0%, and Fe is the overlay metal. Since the cost of the powder can be reduced without deteriorating the characteristics of No. 1, it may be added up to 10% or less, and Nb to 3.0% or less and Ta to 3.0% or less to improve the strength. , V to 3.0% or less, Zr to 3.
You may add up to 0% or less, respectively.

この発明による粉末肉盛用Ni基合金粉末は、より望ま
しくは上記の成分範囲をもつNi基合金からなるもので
あり、長短比が1.5以下の球形状をなすものである。
このような球形状をなす粉末は、粉化された溶融金属が
その表面張力によって球状化したあと凝固する冷却速度
を伴う製造手法、通常はガス噴霧法が用いられる。
More preferably, the Ni-based alloy powder for powder build-up according to the present invention is made of a Ni-based alloy having the above-mentioned range of components, and has a spherical shape with a length-to-short ratio of 1.5 or less.
Such spherical powder is produced by a manufacturing method, usually a gas atomization method, which involves a cooling rate in which the pulverized molten metal is spheroidized by its surface tension and then solidifies.

この発明による粉末肉盛用Ni基合金粉末は、Ni基合
金粉末中において、酸素を0.01〜0.50%の範囲
で含有または付着させるとともに、N量を0.30%以
下に規制することによって、肉盛金属内でブローホール
が発生するのを防ぐようにしたが、このような酸素量と
するには、例えば、 Ni基合金を溶製する際の溶融金属中の酸素量を調整
する方法、 噴霧ガス中の酸素量を調整する(必要に応じて噴霧ガ
スに酸素を添加する)方法、 噴霧雰囲気中の酸素量を調整する法、 粉末を熱処理してその表面を酸化する方法。
The Ni-based alloy powder for powder build-up according to the present invention contains oxygen in the range of 0.01 to 0.50% in the Ni-based alloy powder and controls the N content to 0.30% or less. By doing so, blowholes were prevented from being generated in the overlay metal, but in order to obtain such an oxygen amount, for example, the amount of oxygen in the molten metal when the Ni-based alloy is melted is adjusted. Method, adjusting the amount of oxygen in the atomizing gas (adding oxygen to the atomizing gas as necessary), adjusting the amount of oxygen in the atomizing atmosphere, and heat treating the powder to oxidize its surface.

粉末を酸洗してその表面を酸化する方法、 などがあり、これらの単独および組合わせによる方法を
採用することができる。また、そのほか、 高酸素粉末と低酸素粉末とを混合して粉末の平均酸素
量が0.01〜0.50%となるようにすることもでき
る。
There is a method in which the powder is pickled and the surface is oxidized, and the like, and these methods alone or in combination can be adopted. In addition, the high oxygen powder and the low oxygen powder may be mixed so that the average oxygen content of the powder becomes 0.01 to 0.50%.

(実施例) Ni基合金を溶製したのち、このNi基合金溶湯をN
ガスを使用したガス噴霧法により粉化し、そのままガス
雰囲気中で冷却してNi基合金粉末を製造した。
(Example) After the Ni-based alloy was melted, this Ni-based alloy melt was added to N 2
Ni-based alloy powder was manufactured by pulverizing by a gas atomization method using gas and then cooling in a gas atmosphere as it was.

次いで、前記粉末を大気雰囲気中で500℃×10時間
の加熱を行って酸化させた。そして、各粉末の成分を調
べたところ、第1表のNo.1〜4に示す結果であった。
Then, the powder was heated in an air atmosphere at 500 ° C. for 10 hours to be oxidized. When the ingredients of each powder were examined, the results were shown in Nos. 1 to 4 in Table 1.

また、比較のために、Ni基合金溶湯をNガスを使用
したガス噴霧法により粉化し、そのままガス雰囲気中で
冷却してNi基合金粉末を製造し、酸化処理を行わなか
った粉末を用意した。この粉末の成分を第1表のNo.5
に示す。
For comparison, a molten Ni-base alloy is pulverized by a gas atomization method using N 2 gas, cooled in a gas atmosphere as it is to produce a Ni-base alloy powder, and a powder not subjected to oxidation treatment is prepared. did. The ingredients of this powder are No. 5 in Table 1.
Shown in.

さらに、比較のために、Ni基合金溶湯をNガスを使
用したガス噴霧法により粉化したのち水中で冷却してN
i基合金粉末を製造し、酸化処理を行わなかった粉末を
用意した。この粉末の成分を第1表のNo.6に示す。
Further, for comparison, the molten Ni-based alloy was pulverized by a gas atomization method using N 2 gas and then cooled in water to obtain N 2.
An i-based alloy powder was manufactured, and a powder not subjected to oxidation treatment was prepared. The ingredients of this powder are shown in No. 6 of Table 1.

次に、第1表のNo.1〜6に示した組成の各粉末の球状
度(長短比)、流動度(JIS法)を調べたところ、同
じく第1表に示す結果であり、ガス噴霧したのち水中冷
却したNo.6の粉末は規則形状であるため長短比が大き
く、流動度があまり良くない。
Next, when the sphericity (long-short ratio) and fluidity (JIS method) of each powder having the composition shown in No. 1 to 6 of Table 1 were examined, the same results as shown in Table 1 were obtained. After that, the powder No. 6 cooled in water had a regular shape and thus had a large length-to-short ratio and poor flowability.

続いて、第1表に示した粉末を使用して、第2表に示す
条件で基体表面に粉末肉盛溶接を行った。なお、使用し
た粉末の粒径は−60〜+350meshのものであ
る。
Then, using the powders shown in Table 1, powder build-up welding was performed on the surface of the substrate under the conditions shown in Table 2. The particle size of the powder used is -60 to +350 mesh.

次いで、肉盛溶接金属中におけるバルブ100本中のブ
ローホールの平均個数をX線により調べたところ、第1
表に示す結果であった。
Next, when the average number of blow holes in 100 valves in the overlay welding metal was examined by X-ray,
The results are shown in the table.

さらに、肉盛溶接金属の外観不良率をバルブ100本に
ついて調べたところ、同じく第1表に示す結果であっ
た。
Further, when the appearance defect rate of the overlay welding metal was examined for 100 valves, the results are also shown in Table 1.

第1表に示すように、この発明による粉末肉盛用Ni基
合金粉末を用いたNo.1〜4の場合には、適量の酸素を
有しているため肉盛溶接金属中のブローホール発生がほ
とんどなく、また、粉末の流動度が高いため湯切れやビ
ード幅の不均一といった不具合がなく、外観不良のない
良好な溶接ビード形状を得ることができた。
As shown in Table 1, in the case of Nos. 1 to 4 using the Ni-based alloy powder for powder facing according to the present invention, since there is an appropriate amount of oxygen, blowholes are generated in the overlay welding metal. In addition, because of the high fluidity of the powder, there were no problems such as lack of hot water and uneven bead width, and a good weld bead shape without defective appearance could be obtained.

これに対して、酸素量が少ないNo.5の粉末を用いて肉
盛溶接を行った場合には、肉盛溶接金属中のブローホー
ルが多く、また、長短比の大きい不規則形状であるNo.
6の粉末を用いて肉盛溶接を行った場合には、溶接ビー
ド形状が良くなく外観不良率が高いという好ましくない
結果となった。
On the other hand, when overlay welding was performed using No. 5 powder with a small amount of oxygen, there were many blowholes in the overlay weld metal, and it had an irregular shape with a large length-to-short ratio. .
When the build-up welding was performed using the powder of No. 6, the weld bead shape was not good and the appearance defect rate was high, which was an unfavorable result.

[発明の効果] 以上説明してきたように、この発明による粉末肉盛用N
i基合金粉末は、長短比が1.5以下の球形状をなし、
酸素量が0.01〜0.50重量%でかつ窒素量が0.
30重量%以下のものであるから、肉盛溶接時における
粉末の送給性に優れているため肉盛溶接後の溶接ビード
形状を著しく良好なものとすることが可能であると同時
に、肉盛溶接金属中にブローホールが生じるのを防ぐこ
とが可能であり、粉末を用いた肉盛溶接法がもつ高速お
よび自動溶接の利点を十分に活すことができるようにな
るという非常に優れた効果がもたらされる。
[Effects of the Invention] As described above, N for powder overlay according to the present invention
The i-based alloy powder has a spherical shape with a long / short ratio of 1.5 or less,
The amount of oxygen is 0.01 to 0.50% by weight and the amount of nitrogen is 0.
Since the content is 30% by weight or less, it is possible to make the weld bead shape after overlay welding extremely excellent at the same time because the powder feeding property during overlay welding is excellent. It is possible to prevent blowholes from occurring in the weld metal, and it is possible to take full advantage of the high speed and automatic welding of the overlay welding method using powder. Is brought about.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】粉末肉盛溶接に使用するNi基合金粉末で
あって、長短比が1.5以下の球形状をなし、酸素量が
0.01〜0.50重量%でかつ窒素量が0.30重量
%以下であることを特徴とする粉末肉盛用Ni基合金粉
末。
1. A Ni-based alloy powder used for powder build-up welding, which has a spherical shape with a length-to-short ratio of 1.5 or less, an oxygen content of 0.01 to 0.50% by weight, and a nitrogen content. A Ni-based alloy powder for build-up powder, which is 0.30% by weight or less.
【請求項2】Ni基合金粉末の酸素量が、0.02〜
0.10重量%である特許請求の範囲第(1)項記載の
粉末肉盛用Ni基合金粉末。
2. The Ni-based alloy powder having an oxygen content of 0.02 to 0.02.
The Ni-based alloy powder for powder build-up according to claim (1), which is 0.10% by weight.
JP60171605A 1985-08-02 1985-08-02 Ni-based alloy powder for powder overlay Expired - Lifetime JPH0651239B2 (en)

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JPS6233089A JPS6233089A (en) 1987-02-13
JPH0651239B2 true JPH0651239B2 (en) 1994-07-06

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JP2820613B2 (en) * 1994-03-29 1998-11-05 新日本製鐵株式会社 Liquid phase diffusion bonding alloy foil for heat resistant materials that can be bonded in oxidizing atmosphere
JP2567203B2 (en) * 1994-03-30 1996-12-25 石油公団 Alloy coated corrosion resistant steel pipe
ES2213788T3 (en) * 1996-06-25 2004-09-01 Mec Holding Gmbh MATERIAL IN THE FORM OF POWDER OR WIRE FOR COATING, AS WELL AS CORRESPONDING PROCEDURE.
WO1999039015A1 (en) * 1998-01-28 1999-08-05 L. E. Jones Company Nickel based alloys for internal combustion engine valve seat inserts, and the like
US6519847B1 (en) 1998-06-12 2003-02-18 L. E. Jones Company Surface treatment of prefinished valve seat inserts
US6391084B1 (en) * 1998-07-27 2002-05-21 Toho Titanium Co., Ltd. Metal nickel powder
US6354799B1 (en) * 1999-10-04 2002-03-12 General Electric Company Superalloy weld composition and repaired turbine engine component
JP4189359B2 (en) * 2004-06-22 2008-12-03 岡野バルブ製造株式会社 Anticorrosion method
JP4679942B2 (en) * 2005-03-18 2011-05-11 山陽特殊製鋼株式会社 Ni-based overlaying powder for molds used hot and hot molds
JP4653721B2 (en) * 2006-11-07 2011-03-16 住友金属鉱山株式会社 Ni-based self-fluxing alloy powder for thermal spraying, method for producing the same, and self-fluxing alloy spray coating obtained using the powder
US20130048700A1 (en) * 2011-08-29 2013-02-28 General Electric Company Filler metal chemistry for improved weldability of super alloys
JP6271269B2 (en) * 2014-01-31 2018-01-31 山陽特殊製鋼株式会社 Ni-based self-fluxing alloy powder that suppresses hot-water flow during remelting during thermal spraying and parts with excellent corrosion resistance and wear resistance using the powder
JP6736819B2 (en) * 2017-03-09 2020-08-05 株式会社三井E&Sマシナリー Nickel based alloy for overlay welding
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JPS5024713A (en) * 1973-07-04 1975-03-17

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