JPH0456703A - Stainless steel powder for powder metallurgy - Google Patents
Stainless steel powder for powder metallurgyInfo
- Publication number
- JPH0456703A JPH0456703A JP16895190A JP16895190A JPH0456703A JP H0456703 A JPH0456703 A JP H0456703A JP 16895190 A JP16895190 A JP 16895190A JP 16895190 A JP16895190 A JP 16895190A JP H0456703 A JPH0456703 A JP H0456703A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- powder
- steel powder
- density
- obtd
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 53
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 40
- 239000010935 stainless steel Substances 0.000 title claims abstract description 38
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000007670 refining Methods 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000005056 compaction Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- ZEKANFGSDXODPD-UHFFFAOYSA-N glyphosate-isopropylammonium Chemical compound CC(C)N.OC(=O)CNCP(O)(O)=O ZEKANFGSDXODPD-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005261 decarburization Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、粉末冶金用ステンレス鋼粉末に係わり、特に
機械的性質の良好な焼結品を製造するための高圧粉密度
ステンレス鋼粉末に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a stainless steel powder for powder metallurgy, and particularly to a high density stainless steel powder for producing a sintered product with good mechanical properties.
（従来の技術）
従来より、焼結品の密度を高め機械的性質を良好にする
ために金属粉末の組成を変更することにより、粉末の圧
粉密度、成形性等を向上させている。(Prior Art) Conventionally, the green density, moldability, etc. of the powder have been improved by changing the composition of metal powder in order to increase the density and improve the mechanical properties of a sintered product.
例えば特開昭５６−２０１号公報は、ステンレス鋼粉末
のＣ，Ｎを低下し、圧縮性を向上させ、また特開昭６３
−１４９３０２号公報は、Ｓを低下して粉末の圧粉密度
を高めるようにしている。For example, Japanese Patent Application Laid-Open No. 56-201 discloses that the C and N content of stainless steel powder is reduced and the compressibility is improved.
JP-149302 discloses reducing the S content to increase the green density of the powder.
（発明が解決しようとする課題）
しかしながら、前記従来の粉末では未だ圧粉密度が十分
に向上せず、従って焼結品の機械的特性が十分に高（な
い。(Problems to be Solved by the Invention) However, with the conventional powder, the green density has not yet been sufficiently improved, and therefore the mechanical properties of the sintered product are not sufficiently high.
本発明が解決しようとする課題は、高圧粉密度、のステ
ンレス鋼粉末であって焼結体の機械的特性を大幅に向上
させるようにしたステンレス鋼粉末を提供することにあ
る。The problem to be solved by the present invention is to provide a stainless steel powder having a high compaction density and which greatly improves the mechanical properties of a sintered body.
（課題を解決するための手段）
そのために、本発明の粉末冶金用ステンレス鋼粉末は、
溶湯を噴霧して得られるステンレス鋼粉末であって、下
記成分が重量％で、Ｃ：０．００１〜０．０２％、Ｓ：
０．００１〜０．０１％、Ｎ：０．００８〜０．０２０
％、含まれることを特徴とする。(Means for solving the problem) To this end, the stainless steel powder for powder metallurgy of the present invention is
A stainless steel powder obtained by spraying molten metal, containing the following components in weight%: C: 0.001 to 0.02%, S:
0.001-0.01%, N: 0.008-0.020
%, is characterized by containing.
本発明のステンレス鋼粉末は、例えば溶湯をアルゴン酸
素脱炭炉によって脱炭した後、取鍋精錬炉で精練すると
いう複合プロセスを取ることにより、Ｃ，Ｓ、Ｎの含有
量を十分に低下させられる。The stainless steel powder of the present invention can sufficiently reduce the C, S, and N contents by, for example, taking a complex process in which molten metal is decarburized in an argon oxygen decarburization furnace and then refined in a ladle smelting furnace. It will be done.
この場合、前記複合プロセス後に連続鋳造によって生産
性の向上を図るためビレットを製造するのがよい。ビレ
ットを溶融し、噴霧法によりステンレス鋼粉末を得る。In this case, it is preferable to manufacture a billet by continuous casting after the composite process in order to improve productivity. The billet is melted and stainless steel powder is obtained by a spraying method.
得られるステンレス鋼粉末に含まれるＣ、Ｓ。C and S contained in the stainless steel powder obtained.
Ｎの含有量の限定理由は次のとおりである。The reason for limiting the N content is as follows.
Ｃ：
Ｃを０．００１％以上としたのは靭性を確保するためで
あり、０．０２％以下としたのは、この値を超えると高
圧粉密度の粉末を得にくいからである。C: The reason why C is set at 0.001% or more is to ensure toughness, and the reason why C is set at 0.02% or less is because it is difficult to obtain a powder with high compaction density when this value is exceeded.
Ｓ：
Ｓを０．００１％以上としたのは、不純物としてこの値
くらいは通常不純物として含まれるものであり、０，０
１％以下としたのは、高圧粉密度のステンレス鋼粉末を
得てこれを原料に使用した焼結体の機械的特性を高める
ためである。S: The reason why S is set at 0.001% or more is that this value is normally included as an impurity, and 0.001% or more is used.
The reason for setting the content to 1% or less is to obtain stainless steel powder with a high compaction density and to improve the mechanical properties of a sintered body using this as a raw material.
Ｎ ：
Ｎを０．００８％以上としたのは、この値（らい十分に
低下すれば高圧粉密度のステンレス鋼粉末が得られるか
らで、０．０２０％以下としたのは、高圧粉密度のステ
ンレス鋼粉末を得るためで、ある。N: The reason why N is set at 0.008% or more is that if this value is sufficiently lowered, stainless steel powder with high compacted powder density can be obtained, and the reason why N is set at 0.020% or less is because This is to obtain stainless steel powder.
本発明のステンレス鋼粉末のＣとＮの含有量は、例えば
第１図に示すように、Ｃ当量（Ｃ＋ ［Ｎ］）を
Ｃ＋ ［Ｎ］≦０．０３ （％）
の範囲にするのが望ましい。The content of C and N in the stainless steel powder of the present invention is determined by setting the C equivalent (C+ [N]) in the range of C+ [N]≦0.03 (%), as shown in Fig. 1, for example. desirable.
この範囲の組成であると圧粉密度が十分に高く例えば６
．２ｇ／ｃｍ”以上が得られる。With a composition within this range, the green density is sufficiently high, for example 6
．． 2 g/cm" or more can be obtained.
また、Ｎｂ％Ｗ％Ｖ、Ｔｉ、Ｚｒ、Ｓｎ、Ｃｕ。Also, Nb%W%V, Ti, Zr, Sn, Cu.
Ｔａの一種以上を総量で１０％以下添加すると、ラトラ
ー値が低下し、成形性が改善される。これらの添加量は
総量で１０％を超えると圧粉密度が低下するので１０％
以下にする。When one or more types of Ta are added in a total amount of 10% or less, the Rattler value decreases and moldability is improved. The addition amount of these is 10% because if the total amount exceeds 10%, the green density will decrease.
Do the following.
ステンレス鋼粉末の種類は、フェライト系粉末、オース
トナイト系粉末、マルテンサイト系粉末のいずれのステ
ンレス鋼粉末にも適用可能である。The stainless steel powder may be any of ferrite powder, austonite powder, and martensitic powder.
（実施例） 以下、本発明の実施例について述べる。(Example) Examples of the present invention will be described below.
ステンレス と ・・
実施例１はＪＩＳ規格４１０Ｌのフェライト系ステンレ
ス鋼粉末を用いた。製造工程は次のとおりである。Stainless steel... In Example 1, ferritic stainless steel powder of JIS standard 410L was used. The manufacturing process is as follows.
原料鋼粉末をアルゴン酸素脱炭炉により脱炭し、取鍋精
錬炉で精錬した後、次いで連続鋳造により得られたビレ
ットを溶融し、噴霧法によりステンレス鋼粉末を得た。The raw steel powder was decarburized in an argon oxygen decarburization furnace and refined in a ladle refining furnace, then the billet obtained by continuous casting was melted and stainless steel powder was obtained by a spraying method.
得られたステンレス鋼粉末についてＣ当量（Ｃ＋ ［Ｎ
］ ）重量％と圧粉密度の関係を測定した。C equivalent (C+ [N
) The relationship between weight % and green density was measured.
その結果を第１図に示す。第１図中、実施例１はＣ当量
を種々変化させた例である。比較例１はＪＩＳ規格４１
０Ｌの溶湯から噴霧法により得られたステンレス鋼粉末
の例である。The results are shown in FIG. In FIG. 1, Example 1 is an example in which the C equivalent was varied in various ways. Comparative example 1 is JIS standard 41
This is an example of stainless steel powder obtained by a spraying method from 0 L of molten metal.
第１図から明らかなように、本発明の実施例１による製
法によると、低Ｃ１低Ｎ含有量にし、Ｃ当量を十分に低
下させることができるため、高圧粉密度の粉末が得られ
ることが解かる。As is clear from FIG. 1, according to the manufacturing method according to Example 1 of the present invention, it is possible to obtain a powder with a high compacted powder density because it is possible to achieve a low C1 content and a low C equivalent and to sufficiently reduce the C equivalent. I understand.
ステンレス と の
各鋼種の原料鋼粉末をアルゴン酸素脱炭炉により脱炭し
、取鍋精錬炉で精錬した後、次いで連続鋳造により得ら
れたビレットを溶融し、噴霧法によりステンレス鋼粉末
を得た。After decarburizing the raw material steel powder of each type of stainless steel and , using an argon oxygen decarburizing furnace and refining it in a ladle refining furnace, the billet obtained by continuous casting was then melted and stainless steel powder was obtained by a spraying method. .
各種ステンレス鋼粉末成分と粉末特性の関係を第１表に
示す。ステンレス鋼の鋼種としては、フェライト系４１
０、フェライト系４３０、オーステナイト系３１６、マ
ルテンサイト系の各種ステンレス鋼を用いた。粉末特性
は、圧粉密度とラトラー値を測定した。Table 1 shows the relationship between various stainless steel powder components and powder properties. Ferritic type 41 is the type of stainless steel.
0, ferritic 430, austenitic 316, and martensitic stainless steels were used. For powder properties, green density and Rattler value were measured.
第１表から明らかなように、本発明の実施例２〜５は、
比較例２〜９の対応する鋼種のものに比べて圧粉密度が
良好であることが解かる。As is clear from Table 1, Examples 2 to 5 of the present invention are:
It can be seen that the green powder density is better than that of the corresponding steel types of Comparative Examples 2 to 9.
批困詩五
ＪＩＳ規格４１０Ｌのステンレス鋼粉末と、ＪＩＳ４１
０Ｌベースの低Ｃ１低Ｎ、低Ｓ含有量の発明のステンレ
ス鋼粉末について、成形圧力と圧粉密度、ラトラー値並
びに焼結密度の関係を測定した。JIS standard 410L stainless steel powder and JIS41
Regarding the stainless steel powder of the invention having low C1, low N, and low S content based on 0L, the relationship between compaction pressure, green density, Rattler value, and sintered density was measured.
その結果は、第２図、第３図および第４図に示すとおり
であった。ここに焼結密度は１２００℃で１時間焼結し
たものについての測定値である。The results were as shown in FIGS. 2, 3 and 4. Here, the sintered density is a measured value for a material sintered at 1200° C. for 1 hour.
１ の 白・
次に前記従来のＪＩＳ規格４１０Ｌのステンレス鋼粉末
と、この４１０Ｌに対応する本発明のステンレス鋼粉末
とについて、それぞれ得られた焼結体の機械的特性は第
５図〜第８図に示すとおりであった。Next, the mechanical properties of the obtained sintered bodies of the conventional JIS standard 410L stainless steel powder and the stainless steel powder of the present invention corresponding to this 410L are shown in FIGS. 5 to 8. It was as shown in the figure.
機械的特性としては、引張強さ、伸び、硬さ並びにシャ
ルピー衝撃値について測定した。第５図〜第８図から明
らかなように、本発明のステンレス鋼粉末によると引張
強さ、伸び、硬さについていずれも良好であり、特にシ
ャルピー衝撃値については本発明のものが従来のものよ
りかなり太きい値をとることが解かった。As for mechanical properties, tensile strength, elongation, hardness, and Charpy impact value were measured. As is clear from FIGS. 5 to 8, the stainless steel powder of the present invention has good tensile strength, elongation, and hardness, and especially in terms of Charpy impact value, the stainless steel powder of the present invention is better than the conventional one. It turns out that it takes a much thicker value.
（発明の効果）
以上説明したように本発明の粉末冶金用ステンレス鋼粉
末によれば、高圧粉密度のステンレス鋼粉末が得られる
ため、焼結体の機械的特性を大幅に向上することができ
るという効果がある。(Effects of the Invention) As explained above, according to the stainless steel powder for powder metallurgy of the present invention, stainless steel powder with high compaction density can be obtained, so the mechanical properties of the sintered body can be significantly improved. There is an effect.
（以下、余白。）(Hereafter, margin.)
第１図はＣ当量と圧粉密度の関係を実施例と比較例につ
いて比較した特性図、第２図は成形圧力と圧粉密度の関
係を示す特性図、第３図は成形圧力とラトラー値の関係
を示す特性図、第４図は成形圧力と焼結密度の関係を示
す特性図、第５図は成形圧力と引張強さの関係を示す特
性図、第６図は成形圧力と伸びの関係を示す特性図、第
７図は成形圧力と硬さの関係を示す特性図および第８図
は成形圧力とシャルピー衝撃値の関係を示す特性図であ
る。
（ｇ／ｃｍ’）
出願人 二 大同特殊鋼株式会社Figure 1 is a characteristic diagram comparing the relationship between C equivalent and green powder density for Examples and Comparative Examples, Figure 2 is a characteristic diagram showing the relationship between compacting pressure and green density, and Figure 3 is a characteristic diagram showing the relationship between compacting pressure and green powder density. Figure 4 is a characteristic diagram showing the relationship between molding pressure and sintered density, Figure 5 is a characteristic diagram showing the relationship between molding pressure and tensile strength, and Figure 6 is a characteristic diagram showing the relationship between molding pressure and elongation. FIG. 7 is a characteristic diagram showing the relationship between molding pressure and hardness, and FIG. 8 is a characteristic diagram showing the relationship between molding pressure and Charpy impact value. (g/cm') Applicant 2 Daido Steel Co., Ltd.
Claims (1)
て、下記成分が重量％で、 Ｃ：０．００１〜０．０２％、 Ｓ：０．００１〜０．０１％、 Ｎ：０．００８〜０．０２０％、 含まれることを特徴とする粉末冶金用ステンレス鋼粉末
。(1) Stainless steel powder obtained by spraying molten metal, containing the following components in weight%: C: 0.001 to 0.02%, S: 0.001 to 0.01%, N: 0. A stainless steel powder for powder metallurgy, characterized in that it contains 0.008 to 0.020%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16895190A JPH0456703A (en) | 1990-06-27 | 1990-06-27 | Stainless steel powder for powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16895190A JPH0456703A (en) | 1990-06-27 | 1990-06-27 | Stainless steel powder for powder metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0456703A true JPH0456703A (en) | 1992-02-24 |
Family
ID=15877571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16895190A Pending JPH0456703A (en) | 1990-06-27 | 1990-06-27 | Stainless steel powder for powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0456703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013507528A (en) * | 2009-10-16 | 2013-03-04 | ホガナス アクチボラゲット | Nitrogen-containing low nickel sintered stainless steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130604A (en) * | 1984-07-23 | 1986-02-12 | Taiheiyo Kinzoku Kk | Stainless steel powder for powder metallurgy |
| JPS6347302A (en) * | 1986-08-15 | 1988-02-29 | Daido Steel Co Ltd | Stainless steel powder |
| JPS63149302A (en) * | 1986-12-12 | 1988-06-22 | Daido Steel Co Ltd | Fe-base powder for powder metallurgy |
-
1990
- 1990-06-27 JP JP16895190A patent/JPH0456703A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130604A (en) * | 1984-07-23 | 1986-02-12 | Taiheiyo Kinzoku Kk | Stainless steel powder for powder metallurgy |
| JPS6347302A (en) * | 1986-08-15 | 1988-02-29 | Daido Steel Co Ltd | Stainless steel powder |
| JPS63149302A (en) * | 1986-12-12 | 1988-06-22 | Daido Steel Co Ltd | Fe-base powder for powder metallurgy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013507528A (en) * | 2009-10-16 | 2013-03-04 | ホガナス アクチボラゲット | Nitrogen-containing low nickel sintered stainless steel |
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