JPS6393843A - Stainless steel for cold forging - Google Patents
Stainless steel for cold forgingInfo
- Publication number
- JPS6393843A JPS6393843A JP23847486A JP23847486A JPS6393843A JP S6393843 A JPS6393843 A JP S6393843A JP 23847486 A JP23847486 A JP 23847486A JP 23847486 A JP23847486 A JP 23847486A JP S6393843 A JPS6393843 A JP S6393843A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- magnetic properties
- cold forging
- corrosion resistance
- added
- 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
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 17
- 239000010935 stainless steel Substances 0.000 title claims abstract description 13
- 238000010273 cold forging Methods 0.000 title claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 5
- 229910052714 tellurium Inorganic materials 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims 4
- 230000007797 corrosion Effects 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 14
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 229910052719 titanium Inorganic materials 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 229910052745 lead Inorganic materials 0.000 abstract description 2
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 239000011669 selenium Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
（産業上の利用分野）
本発明はフェライト系ステンレス鋼に係り、特にフェラ
イト系ステンレス鋼の耐食性、磁気特性、快削性等を改
善した冷間鍛造用ステンレス鋼に関するものである。
（従来の技術及び解決しようとする問題点）軟質磁性材
料としては用途に応じて種々のものが用いられており、
純鉄、珪素鉄、電磁用ステンレス鋼、パーマロイなどが
ある。
これらのうち、電磁用ステンレス鋼は主に１３Ｃｒ系１
８Ｃｒ系などがその優れた磁気特性と耐食性を活かして
電磁バルブ、リレー用鉄心等に使用されている。この種
の電磁用ステンレス鋼には磁気特性の改善を目的として
適量のシリコン、アルミニウムを含有せしめたものがあ
り、また被削性を付与するために少量の鉛、カルシウム
、テルル、セレンなどを添加した快削ステンレス鋼もあ
る。
しかしながら、電磁用ステンレス鋼として磁気特性、耐
食性は勿論のこと、加工性等を更に一層改善する要請に
対しては、必ずしも満足できるものはない。
本発明は、か５る要請に応えるべくなされたものであっ
て、磁気特性を損なうことなく耐食性、加工性又は被剛
性を改善し得る冷間鍛造用ステンレス鋼を提供すること
を目的とするものである。
（問題点を解決するための手段）
上記目的を達成するため、本発明では、合金元素の添加
と共にいわゆる不純物量を規制することを試み、本発明
をなしたものである。
すなわち、本発明に係る冷間鍛造用ステンレス鋼は、Ｃ
≦０．０８％、ＳＬ：０．１−ａ、ｏ％、Ｍｎ≦０．５
％、Ｃｒ：８−１８％及びＭｏ６３％を含み、更にＴｉ
：０．０１〜１％、Ｎｂ：０．０１〜１％、Ｚｒ：００
０１〜１％及びｖ：０．０１〜１％のうちの１種又は２
種以上を含むと共にＳ≦０．０１５％、Ｎ≦０．０５％
、Ｏ≦１００ｐｐ＋ａに規制し、更に必要に応じてＡｌ
≦０．５％を含むものを基本成分とし、これに任意成分
としてＰｂ：０．０３〜０．３％、Ｃａ：Ｏ，ＯＯ２〜
０．０２％、Ｔｏ： ０ 、０１−０．２％、Ｂｉ：Ｏ
，ＯＯ２〜０．０２％及びＳｅ：０．０３〜０．３％の
うちの１種又は２種以上を添加したことを特徴とするも
のである。
以下に本発明を実施例に基づいて詳細に説明する。
まず、本発明鋼の成分限定理由を示す。
Ｃは耐食性、磁気特性を改善するためには少ない程よい
が、各種の溶解条件を考慮して０．０８％を上限とする
。
Ｓｉは磁気特性、特に飽和磁束密度（Ｂ、。）を改善し
、また電気抵抗を上げる効果がある。そのためには０．
１〜３．０％を添加する必要がある。
Ｍｎは脱酸剤として添加するが、多すぎると加工性の劣
化をまねくので、０．５％を上限とする。
Ｃｒは耐食性を確保するうえで重要な成分であり、８％
未満ではその効果が得られず、１８％を超えて添加して
も効果が飽和し、熱間加工性が悪くなると共にコスト高
となるので、８〜１８％の範囲で添加する。
ＭＯは耐食性を改善するのに効果があるが、多すぎると
熱間加工性の劣化をまねくので、３％以下で添加する。
Ｔｉ％Ｎｂ、 Ｚｒ％Ｖは鋼中のＣ，Ｎ等を固定して磁
気特性の改善、特に保磁力を下げるのに効果があるので
、必要に応じてそれらの１種又は２種以上を添加する。
添加するときはＴｉ：０．０１〜１％、Ｎｂ：０．０１
〜１％、Ｚｒ：０．０１〜１％、Ｖ：０．０１〜１％の
範囲とする。
Ｓ、Ｎ、０はいわゆる鋼中不純物として含まれるが、Ｓ
は冷間加工性を劣化させるので、 ０．０１５％以下に
規制する必要がある。またＮは０゜０５％以下に規制す
ることによって保磁力の低下等の磁気特性の改善に効果
的であり、０は多量であると酸化物からクラックが入り
冷鍛性の劣化をまねくので、これを防止すると共に保磁
力（Ｈｅ）を下げるためにも１１００ｐｐ以下に規制す
る必要がある。
以上の基本成分のほか、以下の元素を必要に応じて添加
することが可能である。
Ａｌは磁気特性の改善に効果があり、更に電気抵抗を上
げるのに効果がある。添加するときは０゜５％を上限と
すれば足り、多すぎると熱間加工性が劣化する。
Ｐｂ、Ｃａ、Ｔｅ、Ｂｉ、Ｓｓは磁気特性を損なわずに
被削性を向上させることができ、添加するときはそれら
の１種又は２種以上をＰｂ：０．０３〜０．３％、Ｃａ
：Ｏ，ＯＯ２〜０．０２％、Ｔｅ：０．０１〜０．２％
、Ｂｉ：Ｏ，ＯＯ２〜０．０２％、Ｓｅ：０．０３〜０
．３％の範囲で添加する。なお、各成分とも上限値を超
える量を添加すると熱間加工性が劣化する。
（実施例）
第１表に示す化学成分（ｗｔ％）を有する供試鋼を溶解
、鍛造後に熱間鍛造、熱間圧延を経て６０ａｍφのの丸
棒材を製造した。
次に、各丸棒材に８５０℃Ｘ４ｈｒの焼なまし処理を施
した後、磁気特性及び耐食性を調べると共に一部につい
て被剛性も調べ、第１表並びに第１図に示す結果を得た
。
なお、耐食性は、上記試料を大気中に１００日間放置す
る曝露試験を実施し、腐食の程度により評価した。また
、被剛性は、ハイス工具（ＳＫＨ４）を用い、送り０．
０８４ａ＋ａ＋／ｒｅｖ、切込み１．０ＩＩＩ１１、切
削速度６０＋ｓ／ｗｉｎ、切削油剤使用の条件で切削し
、フランク摩耗幅の大きさによって評価した。(Field of Industrial Application) The present invention relates to ferritic stainless steel, and particularly to a cold forging stainless steel that has improved corrosion resistance, magnetic properties, free machinability, etc. of ferritic stainless steel. (Prior art and problems to be solved) Various soft magnetic materials are used depending on the application.
There are pure iron, silicon iron, electromagnetic stainless steel, permalloy, etc. Among these, electromagnetic stainless steel is mainly 13Cr series 1
8Cr-based materials are used in electromagnetic valves, relay cores, etc. due to their excellent magnetic properties and corrosion resistance. This type of electromagnetic stainless steel contains appropriate amounts of silicon and aluminum to improve magnetic properties, and small amounts of lead, calcium, tellurium, selenium, etc. are added to improve machinability. There is also free-cutting stainless steel. However, none of these stainless steels can necessarily satisfy the demands for further improvements in not only magnetic properties and corrosion resistance but also workability and the like as electromagnetic stainless steels. The present invention was made in response to these demands, and an object of the present invention is to provide a stainless steel for cold forging that can improve corrosion resistance, workability, or rigidity without impairing magnetic properties. It is. (Means for Solving the Problems) In order to achieve the above object, the present invention attempts to control the amount of so-called impurities as well as adding alloying elements, and the present invention has been achieved. That is, the stainless steel for cold forging according to the present invention has C
≦0.08%, SL: 0.1-a, o%, Mn≦0.5
%, Cr: 8-18% and Mo63%, and further contains Ti
:0.01~1%, Nb:0.01~1%, Zr:00
01-1% and v: 1 or 2 of 0.01-1%
Contains more than one species, S≦0.015%, N≦0.05%
, O≦100pp+a, and further add Al as necessary.
The basic component is one containing ≦0.5%, and optional components include Pb: 0.03-0.3%, Ca:O, OO2-
0.02%, To: 0, 01-0.2%, Bi:O
, OO2 to 0.02% and Se: 0.03 to 0.3%. The present invention will be explained in detail below based on examples. First, the reason for limiting the composition of the steel of the present invention will be explained. In order to improve corrosion resistance and magnetic properties, less C is better, but the upper limit is set at 0.08% in consideration of various melting conditions. Si has the effect of improving magnetic properties, particularly saturation magnetic flux density (B,.), and increasing electrical resistance. For that, 0.
It is necessary to add 1 to 3.0%. Mn is added as a deoxidizing agent, but if it is too large, processability deteriorates, so the upper limit is set at 0.5%. Cr is an important component to ensure corrosion resistance, and 8%
If it is less than 18%, the effect cannot be obtained, and if it is added in excess of 18%, the effect is saturated, resulting in poor hot workability and high cost, so it is added in a range of 8 to 18%. Although MO is effective in improving corrosion resistance, too much MO causes deterioration of hot workability, so it is added in an amount of 3% or less. Ti%Nb and Zr%V are effective in fixing C, N, etc. in steel and improving magnetic properties, especially lowering coercive force, so one or more of them can be added as necessary. do. When adding Ti: 0.01-1%, Nb: 0.01
-1%, Zr: 0.01-1%, V: 0.01-1%. S, N, and 0 are included as so-called impurities in steel, but S
Because it deteriorates cold workability, it is necessary to regulate it to 0.015% or less. In addition, N is effective in improving magnetic properties such as reducing coercive force by regulating it to 0°05% or less; too much N can cause cracks from oxides and deteriorate cold forging properties. In order to prevent this and lower the coercive force (He), it is necessary to limit it to 1100 pp or less. In addition to the above basic components, the following elements can be added as necessary. Al is effective in improving magnetic properties and is also effective in increasing electrical resistance. When adding, it is sufficient to keep the upper limit to 0.5%; if it is added too much, hot workability deteriorates. Pb, Ca, Te, Bi, and Ss can improve machinability without impairing magnetic properties, and when added, one or more of them are added to Pb: 0.03 to 0.3%, Ca
:O, OO2~0.02%, Te:0.01~0.2%
, Bi:O, OO2~0.02%, Se:0.03~0
．． Add in a range of 3%. Note that if each component is added in an amount exceeding the upper limit, hot workability will deteriorate. (Example) A test steel having the chemical composition (wt%) shown in Table 1 was melted and forged, and then subjected to hot forging and hot rolling to produce a round bar with a diameter of 60 am. Next, each round bar material was annealed at 850° C. for 4 hours, and then its magnetic properties and corrosion resistance were examined, as well as the stiffness of some of them, and the results shown in Table 1 and FIG. 1 were obtained. Note that the corrosion resistance was evaluated by conducting an exposure test in which the above sample was left in the atmosphere for 100 days, and based on the degree of corrosion. In addition, the rigidity was measured using a high speed tool (SKH4) with a feed rate of 0.
Cutting was performed under the following conditions: 084a+a+/rev, depth of cut 1.0III11, cutting speed 60+s/win, and using cutting fluid, and evaluation was made based on the size of flank wear width.
第１表よりわかるように、本発明例（ＮＱＩ〜１０．１
３）のいずれの供試鋼も保磁力、飽和磁束密度（８３゜
）等の磁気特性が優れており、耐食性も優れているのに
対し、Ｍｏを含まない比較例（＆１１）は耐食性が劣り
、Ｔｉ、Ｎｂ、Ｚｒ、Ｖを含まない比較例（ＮＱ１２）
は保磁力が高く、磁気特性が劣っている。
また、快削元素を添加した本発明例は、第１図に示すよ
うに、被削性が改善されることが明らかであり、その場
合でも磁気特性の劣化は生じていない。
（発明の効果）
以上詳述したように、本発明によれば、特にＭｏを添加
すると共にＴｉ、Ｎｂ、Ｚｒ又はＶを添加し、更に不純
物量を規制したので、磁気特性を改善し得ると共に耐食
性を向上させることができ、更に被剛性や加工性の改善
を図ることができる。As can be seen from Table 1, the present invention example (NQI ~ 10.1
All of the test steels in 3) have excellent magnetic properties such as coercive force and saturation magnetic flux density (83°), and are also excellent in corrosion resistance, whereas the comparative example (&11) that does not contain Mo has poor corrosion resistance. , Ti, Nb, Zr, Comparative example (NQ12) not containing V
has a high coercive force and poor magnetic properties. Furthermore, as shown in FIG. 1, it is clear that machinability is improved in the present invention example in which a free-cutting element is added, and even in this case, no deterioration of magnetic properties occurs. (Effects of the Invention) As detailed above, according to the present invention, in particular, Mo is added, Ti, Nb, Zr, or V is added, and the amount of impurities is controlled, so that the magnetic properties can be improved and Corrosion resistance can be improved, and rigidity and workability can also be improved.
第１図は本発明例の被剛性を示す図で、切削時間とフラ
ンク摩耗幅の関係を示している。
第１図
を刃角・１８４間 （分）FIG. 1 is a diagram showing the rigidity of an example of the present invention, and shows the relationship between cutting time and flank wear width. Figure 1 shows the blade angle: 184 minutes (minutes)
Claims (4)
：０．１〜３．０％、Ｍｎ≦０．５％、Ｃｒ：８〜１８
％及びＭｏ≦３％を含み、更にＴｉ：０．０１〜１％、
Ｎｂ：０．０１〜１％、Ｚｒ：０．０１〜１％及びＶ：
０．０１〜１％のうちの１種又は２種以上を含むと共に
Ｓ≦０．０１５％、Ｎ≦０．０５％、Ｏ≦１００ｐｐｍ
に規制し、残部が実質的にＦｅからなることを特徴とす
る冷間鍛造用ステンレス鋼。(1) In weight% (the same applies hereinafter), C≦0.08%, Si
:0.1~3.0%, Mn≦0.5%, Cr:8~18
% and Mo≦3%, further including Ti: 0.01 to 1%,
Nb: 0.01-1%, Zr: 0.01-1% and V:
Contains one or more of 0.01 to 1% and S≦0.015%, N≦0.05%, O≦100ppm
A stainless steel for cold forging, characterized in that the remainder is substantially composed of Fe.
≦０．５％、Ｃｒ：８〜１８％、Ｍｏ≦３％及びＡｌ≦
０．５％を含み、更にＴｉ：０．０１〜１％、Ｎｂ：０
．０１〜１％、Ｚｒ：０．０１〜１％及びＶ：０．０１
〜１％のうちの１種又は２種以上を含むと共にＳ≦０．
０１５％、Ｎ≦０．０５％、Ｏ≦１００ｐｐｍに規制し
、残部が実質的にＦｅからなることを特徴とする冷間鍛
造用ステンレス鋼。(2) C≦0.08%, Si: 0.1-3.0%, Mn
≦0.5%, Cr: 8-18%, Mo≦3% and Al≦
Contains 0.5%, further Ti: 0.01-1%, Nb: 0
．． 01-1%, Zr: 0.01-1% and V: 0.01
Contains one or more of 1% to 1% and S≦0.
015%, N≦0.05%, O≦100ppm, and the remainder is substantially composed of Fe.
≦０．５％、Ｃｒ：８〜１８％及びＭｏ≦３％を含み、
更にＴｉ：０．０１〜１％、Ｎｂ：０．０１〜１％、Ｚ
ｒ：０．０１〜１％及びＶ：０．０１〜１％のうちの１
種又は２種以上と、Ｐｂ：０．０３〜０．３％、Ｃａ：
０．００２〜０．０２％、Ｔｅ：０．０１〜０．２％、
Ｂｉ：０．００２〜０．０２％及びＳｅ：０．０３〜０
．３％のうちの１種又は２種以上とを含むと共に、Ｓ≦
０．０１５％、Ｎ≦０．０５％、Ｏ≦１００ｐｐｍに規
制し、残部が実質的にＦｅからなることを特徴とする冷
間鍛造用ステンレス鋼。(3) C≦0.08%, Si: 0.1-3.0%, Mn
≦0.5%, Cr: 8 to 18% and Mo≦3%,
Furthermore, Ti: 0.01-1%, Nb: 0.01-1%, Z
1 of r: 0.01-1% and V: 0.01-1%
species or two or more species, Pb: 0.03 to 0.3%, Ca:
0.002-0.02%, Te: 0.01-0.2%,
Bi: 0.002-0.02% and Se: 0.03-0
．． Contains one or more of 3%, and S≦
A stainless steel for cold forging, characterized in that the content is regulated to 0.015%, N≦0.05%, and O≦100ppm, with the remainder essentially consisting of Fe.
≦０．５％、Ｃｒ：８〜１８％、Ｍｏ≦３％及びＡｌ≦
０．５％を含み、更にＴｉ：０．０１〜１％、Ｎｂ：０
．０１〜１％、Ｚｒ：０．０１〜１％及びＶ：０．０１
〜１％のうちの１種又は２種以上と、Ｐｂ：０．０３〜
０．３％、Ｃａ：０．００２〜０．０２％、Ｔｅ：０．
０１〜０．２％、Ｂｉ：０．００２〜０．０２％及びＳ
ｅ：０．０３〜０．３％のうちの１種又は２種以上とを
含むと共に、Ｓ≦０．０１５％、Ｎ≦０．０５％、Ｏ≦
１００ｐｐｍに規制し、残部が実質的にＦｅからなるこ
とを特徴とする冷間鍛造用ステンレス鋼。(4) C≦0.08%, Si: 0.1-3.0%, Mn
≦0.5%, Cr: 8-18%, Mo≦3% and Al≦
Contains 0.5%, further Ti: 0.01-1%, Nb: 0
．． 01-1%, Zr: 0.01-1% and V: 0.01
~1% of one or more types and Pb: 0.03~
0.3%, Ca: 0.002-0.02%, Te: 0.
01-0.2%, Bi: 0.002-0.02% and S
e: Contains one or more of 0.03 to 0.3%, S≦0.015%, N≦0.05%, O≦
A stainless steel for cold forging, characterized in that Fe is regulated to 100 ppm, with the remainder essentially consisting of Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61238474A JPH0765144B2 (en) | 1986-10-07 | 1986-10-07 | Stainless steel for cold forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61238474A JPH0765144B2 (en) | 1986-10-07 | 1986-10-07 | Stainless steel for cold forging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6393843A true JPS6393843A (en) | 1988-04-25 |
| JPH0765144B2 JPH0765144B2 (en) | 1995-07-12 |
Family
ID=17030775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61238474A Expired - Fee Related JPH0765144B2 (en) | 1986-10-07 | 1986-10-07 | Stainless steel for cold forging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0765144B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417615A (en) * | 1990-05-10 | 1992-01-22 | Nippon Steel Corp | Production of stainless steel sheet having excellent corrosion resistance and working moldability |
| WO1994013848A1 (en) * | 1992-12-11 | 1994-06-23 | Nippon Steel Corporation | Steel of high corrosion resistance and high processability |
| EP1085105A2 (en) * | 1999-09-03 | 2001-03-21 | Kiyohito Ishida | Free cutting alloy |
| JP2001140034A (en) * | 1999-09-03 | 2001-05-22 | Kiyohito Ishida | Free-cutting alloy material |
| US7297214B2 (en) | 1999-09-03 | 2007-11-20 | Kiyohito Ishida | Free cutting alloy |
| US7381369B2 (en) | 1999-09-03 | 2008-06-03 | Kiyohito Ishida | Free cutting alloy |
| JP2013028855A (en) * | 2011-07-29 | 2013-02-07 | Sanyo Special Steel Co Ltd | Magnetic steel high in intrinsic resistance and excellent in machinability and magnetization characteristic |
| JP2013531130A (en) * | 2010-04-26 | 2013-08-01 | 敬治 中島 | Ferritic stainless steel with high grain refinement performance and stable grain refinement performance and its production method |
| JP2018003112A (en) * | 2016-07-05 | 2018-01-11 | 秋山精鋼株式会社 | Method for adjusting coercive force of ferritic stainless steel bar material, ferritic stainless steel bar material for electromagnetic member or pipe material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518736A (en) * | 1974-07-11 | 1976-01-23 | Nippon Hodo | ASUFUARUTOFUINITSUSHAANO HOSOHABAJIZAICHOSEISOCHI |
| JPS5263813A (en) * | 1975-11-22 | 1977-05-26 | Nisshin Steel Co Ltd | High cr ferritic soft magnetic steel |
| JPS5616653A (en) * | 1979-07-17 | 1981-02-17 | Tohoku Tokushuko Kk | Soft magnetic material having superior workability and machinability |
| JPS59226150A (en) * | 1983-06-04 | 1984-12-19 | Nippon Steel Corp | Ferritic stainless steel with superior workability and corrosion resistance |
| JPS61217552A (en) * | 1985-03-23 | 1986-09-27 | Aichi Steel Works Ltd | Soft magnetic stainless steel for cold forging |
| JPS6223962A (en) * | 1985-07-24 | 1987-01-31 | Aichi Steel Works Ltd | Soft magnetic stainless steel for cold forging |
-
1986
- 1986-10-07 JP JP61238474A patent/JPH0765144B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518736A (en) * | 1974-07-11 | 1976-01-23 | Nippon Hodo | ASUFUARUTOFUINITSUSHAANO HOSOHABAJIZAICHOSEISOCHI |
| JPS5263813A (en) * | 1975-11-22 | 1977-05-26 | Nisshin Steel Co Ltd | High cr ferritic soft magnetic steel |
| JPS5616653A (en) * | 1979-07-17 | 1981-02-17 | Tohoku Tokushuko Kk | Soft magnetic material having superior workability and machinability |
| JPS59226150A (en) * | 1983-06-04 | 1984-12-19 | Nippon Steel Corp | Ferritic stainless steel with superior workability and corrosion resistance |
| JPS61217552A (en) * | 1985-03-23 | 1986-09-27 | Aichi Steel Works Ltd | Soft magnetic stainless steel for cold forging |
| JPS6223962A (en) * | 1985-07-24 | 1987-01-31 | Aichi Steel Works Ltd | Soft magnetic stainless steel for cold forging |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417615A (en) * | 1990-05-10 | 1992-01-22 | Nippon Steel Corp | Production of stainless steel sheet having excellent corrosion resistance and working moldability |
| WO1994013848A1 (en) * | 1992-12-11 | 1994-06-23 | Nippon Steel Corporation | Steel of high corrosion resistance and high processability |
| EP1085105A2 (en) * | 1999-09-03 | 2001-03-21 | Kiyohito Ishida | Free cutting alloy |
| EP1085105A3 (en) * | 1999-09-03 | 2001-05-16 | Kiyohito Ishida | Free cutting alloy |
| JP2001140034A (en) * | 1999-09-03 | 2001-05-22 | Kiyohito Ishida | Free-cutting alloy material |
| EP1431410A1 (en) * | 1999-09-03 | 2004-06-23 | Kiyohito Ishida | Free cutting alloy |
| US7297214B2 (en) | 1999-09-03 | 2007-11-20 | Kiyohito Ishida | Free cutting alloy |
| US7381369B2 (en) | 1999-09-03 | 2008-06-03 | Kiyohito Ishida | Free cutting alloy |
| JP2013531130A (en) * | 2010-04-26 | 2013-08-01 | 敬治 中島 | Ferritic stainless steel with high grain refinement performance and stable grain refinement performance and its production method |
| JP2013028855A (en) * | 2011-07-29 | 2013-02-07 | Sanyo Special Steel Co Ltd | Magnetic steel high in intrinsic resistance and excellent in machinability and magnetization characteristic |
| JP2018003112A (en) * | 2016-07-05 | 2018-01-11 | 秋山精鋼株式会社 | Method for adjusting coercive force of ferritic stainless steel bar material, ferritic stainless steel bar material for electromagnetic member or pipe material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0765144B2 (en) | 1995-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6230860A (en) | Free-cutting austenitic stainless steel | |
| GB2024862A (en) | High manganese non-magnetic steel | |
| JPS6393843A (en) | Stainless steel for cold forging | |
| JPH06228717A (en) | Silicon stainless steel | |
| US4797252A (en) | Corrosion-resistant, low-carbon plus nitrogen austenitic stainless steels with improved machinability | |
| JP2774709B2 (en) | Sulfuric acid dew point corrosion resistant stainless steel with excellent hot workability | |
| EP0257979B1 (en) | Low carbon plus nitrogen, free-machining austenitic stainless steel | |
| JPH01180945A (en) | Stainless steel for cold forging | |
| JPS6345350A (en) | Stainless steel for cold forging | |
| JPH0344448A (en) | Stainless steel excellent in corrosion resistance | |
| JP2917450B2 (en) | Stainless steel with excellent corrosion resistance | |
| JPS62133042A (en) | Electromagnetic stainless steel | |
| JPH07233452A (en) | Ferritic stainless steel excellent in magnetic property | |
| JPS60152661A (en) | Free-cutting austenitic stainless steel | |
| JPH02170948A (en) | Stainless steel having excellent cold forgeability | |
| JPH03277718A (en) | Production of ni-fe-cr soft-magnetic alloy | |
| JPS62278252A (en) | Free-cutting austenitic stainless steel | |
| JPS63157840A (en) | Austenitic stainless steel | |
| JPH0649605A (en) | Magnetic stainless steel | |
| JPS6386848A (en) | Free cutting ferritic stainless steel | |
| JPS63157838A (en) | Two-phase stainless steel excellent in crevice corrosion resistance | |
| JP2001073101A (en) | Electromagnetic material having high magnetic flux density and high specific resistance and excellent in machinability and cold forgeability | |
| JPH0610102A (en) | High cold forgeability magnetic stainless steel | |
| JPS59219454A (en) | Steel for hot working | |
| JPH08158012A (en) | High damping alloy with high strength and high corrosion resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |