JPS60224754A - Alloy tool steel - Google Patents
Alloy tool steelInfo
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- JPS60224754A JPS60224754A JP7980284A JP7980284A JPS60224754A JP S60224754 A JPS60224754 A JP S60224754A JP 7980284 A JP7980284 A JP 7980284A JP 7980284 A JP7980284 A JP 7980284A JP S60224754 A JPS60224754 A JP S60224754A
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- tool steel
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- alloy tool
- steel
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Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、高速度工具鋼、冷間ダイス鋼、熱間ダイス
鋼、鋳造用工具などの工具用材料として利用され、とく
に熱間加工性および疲労特性に優れた合金工具鋼に関す
るものである。[Detailed Description of the Invention] (Industrial Application Field) This invention is used as a material for tools such as high-speed tool steel, cold die steel, hot die steel, and casting tools, and has particularly good hot workability. and alloy tool steels with excellent fatigue properties.
（従来技術） 従来、合金工具鋼としては、ＪＩＳ ＳＫＳ。(Conventional technology) Conventionally, JIS SKS has been used as alloy tool steel.
ＳＫＤ 、ＳＫＴ 、ＳＫＨなどがあり、切削工具。Cutting tools include SKD, SKT, SKH, etc.
押出ダイス、引抜ダイス、転造ダイス、線引ダイス、ゲ
ージ、プレス型、ダイカスト型などの広い用途にわたっ
て使用されている。It is used in a wide range of applications such as extrusion dies, drawing dies, rolling dies, wire drawing dies, gauges, press dies, and die casting dies.
このような合金工具鋼においては、所望の形状をなす工
具の製作が容易になしうると共に、長寿命が得られるよ
うに、熱間加工性および疲労特性に優れていることが要
求される。Such alloy tool steels are required to have excellent hot workability and fatigue properties so that tools having a desired shape can be easily manufactured and have a long tool life.
（発明の目的）
この発明は、上述した要求に鑑みてなされたもので、工
具用材料としての必要な特性を具備し、とくに熱間加工
性および疲労特性に優れた合金工具鋼を提供することを
目的としている。(Object of the Invention) The present invention was made in view of the above-mentioned requirements, and an object of the present invention is to provide an alloy tool steel that has the necessary properties as a tool material and has particularly excellent hot workability and fatigue properties. It is an object.
（発明の構成）
この発明は、高速度工具鋼、冷間ダイス鋼、熱間ダイス
鋼、鋳造用工具等々の合金工具鋼において、ＲＥＭ：０
．００１−０．６０重量％含有させると共に、Ｓ：０．
００２０重量％以下、０：０．００３００３％以下に規
制したことを特徴としている。(Structure of the Invention) The present invention provides REM: 0 in alloy tool steels such as high speed tool steels, cold die steels, hot die steels, and casting tools.
．． 001-0.60% by weight, and S: 0.
It is characterized by being regulated to 0:0.020% by weight or less and 0:0.003003% or less.
この発明の合金工具鋼において、ＲＥＭ含有量（希土類
元素の１種または２種以上の合計量）をｏ、ｏｏｔ〜０
．６０重量％としたのは、ＲＥＭを添加することによっ
て、工具鋼の靭性を向上させ、特に耐衝撃性を高めるこ
とができるためであり、このような効果を得るためにｏ
、ｏｏｉ重量％以上添加させた。しかし、多量に添加す
ると靭性および加工性を劣化させるので０．６０重畢％
以下とした。In the alloy tool steel of this invention, the REM content (total amount of one or more rare earth elements) is o, oot ~ 0
．． The reason why it is set at 60% by weight is that by adding REM, it is possible to improve the toughness of the tool steel, especially the impact resistance.
, ooi weight % or more. However, if added in large amounts, the toughness and workability will deteriorate, so 0.60%
The following was made.
また、Ｓ含有量を０．００２０重量％以下、０含有量を
０．００３０重量％以量としたのは、Ｓ、ｏ量を規制す
ることによって、地峡の発生を抑制し、地峡等級を向上
させるようにするためである。In addition, the reason why the S content is set to 0.0020% by weight or less and the 0 content is set to 0.0030% by weight or more is that by regulating the amount of S and O, the generation of isthmus is suppressed and the isthmus grade is improved. This is to ensure that the
同様に、地峡等級をより一層向上させるために、より望
ましくは、Ｎ：０．０２０％景％以下、へ又：０．０２
０重量％以下、Ｐ：０．０２０重畢％以下に規制するこ
とがよい。Similarly, in order to further improve the isthmus grade, more preferably N: 0.020% or less, Hemata: 0.02
It is preferable to limit the content to 0% by weight or less, P: 0.020% by weight or less.
また、製造時におけるＲＥＭの添加は、１５３０〜１５
５０℃とくに１５４０〜１５４５０Ｃで行うことが望ま
しく、これによって地峡欠陥の発生をかなり抑えること
ができる。In addition, the addition of REM during manufacturing is 1530 to 15
It is preferable to carry out the process at 50° C., especially 1540 to 15450° C. This can considerably suppress the occurrence of isthmus defects.
この発明の一実施態様においては、前記合金工具鋼が高
速度工具鋼であり、重量％で、Ｃ：０．３５〜１．５０
％、Ｓｉ＋０．１〜２．０％、Ｍｎ：０．１〜１．５％
、Ｃｒ：２．０〜１０．０％、および２Ｍｏ ＋ｗ ：
１ 、５〜３０．０％、Ｖ：０．５〜５．０％のうち
の１種または２種以上、ざらにＲＥＭ：０．００１〜０
．６０％を含み、Ｓ：０．００２０％以下、０：０．０
０３０％以下に規制し、
必要に応じて、Ｎｂ：０．０１〜５．０％、Ｔａ：Ｏ，
Ｏ１〜５．０％、Ｚｒ：２．０％以下。In one embodiment of the present invention, the alloy tool steel is a high speed tool steel, and in weight percent, C: 0.35 to 1.50.
%, Si+0.1~2.0%, Mn:0.1~1.5%
, Cr: 2.0-10.0%, and 2Mo +w:
1, 5-30.0%, V: 0.5-5.0%, one or more types, rough REM: 0.001-0
．． Contains 60%, S: 0.0020% or less, 0:0.0
Nb:0.01~5.0%, Ta:O,
O1 to 5.0%, Zr: 2.0% or less.
Ｈｆ・２．０％以下、Ｔｉ：２．０％以下、Ｓｃ・０．
００１〜２．０％、Ｙ：２．０％以下の群と、
Ｃｏ：１．Ｏ〜２０．０％、Ｎｉ：０．０１〜２．０％
、Ｃｕ＋０．２５〜１．０％、Ｂ：０．００１〜０．０
５０％の群と、
Ｍｇ＋０．００１〜０．５％、Ｃａ：０．００２〜０．
０１％、Ｐｂ：０．４％以下、Ｂｉ ：０．５％以下、
Ｔｅ：０．３％以下、Ｓｅ：０゜３％以下の群と、から
選ばれる１種以上の元素を含み、
さらに必要に応じて、Ｎ：０．０２０％以下。Hf: 2.0% or less, Ti: 2.0% or less, Sc: 0.
001 to 2.0%, Y: 2.0% or less group, and Co: 1. O~20.0%, Ni:0.01~2.0%
, Cu+0.25~1.0%, B:0.001~0.0
50% group, Mg+0.001~0.5%, Ca:0.002~0.
01%, Pb: 0.4% or less, Bi: 0.5% or less,
Contains one or more elements selected from the group Te: 0.3% or less, Se: 0°3% or less, and further, if necessary, N: 0.020% or less.
Ａ文：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し。A: 0.020% or less, P: 0.020% or less, singly or in combination.
残部実質的にＦｅよりなるものとすることができる。The remainder can be made essentially of Fe.
ここで、Ｃは高速度工具鋼として必要な硬さおよび耐摩
耗性を確保するのに有効な元素であって、このような効
果を得るために０．３５％以上含有させるのがよい。し
かし、多すぎると靭性および加工性が低下するので１．
５０％以下とするのがよい。Here, C is an effective element for ensuring the hardness and wear resistance required for high-speed tool steel, and in order to obtain such effects, it is preferably contained in an amount of 0.35% or more. However, if it is too large, the toughness and workability will deteriorate, so 1.
It is preferable to set it to 50% or less.
Ｓｉは脱酸剤として作用すると共に焼もどし硬さの向上
、および靭性や耐食性の向上に有効な元素であって、こ
のような効果を得るために０．１％以上含有させるのが
よい。しかし、多量に添加すると熱間加工性を害すると
共に靭性を劣化させるので２．０％以下とするのがよい
。Si is an element that acts as a deoxidizing agent and is effective in improving tempering hardness, toughness, and corrosion resistance, and is preferably contained in an amount of 0.1% or more in order to obtain such effects. However, if added in a large amount, it impairs hot workability and deteriorates toughness, so the content is preferably 2.0% or less.
Ｍｎは脱酸および脱硫剤として作用し、鋼の清浄度を高
めると共に焼入性の向上にも寄与する元素であり、この
ような効果を得るために０．１％以上添加するのがよい
。しかし、多すぎると熱間加工性を害するので１．５％
以下とするのが良い。Mn is an element that acts as a deoxidizing and desulfurizing agent, increasing the cleanliness of steel and contributing to improving hardenability, and in order to obtain such effects, it is preferable to add 0.1% or more. However, if it is too high, it will impair hot workability, so 1.5%
It is best to set it to the following.
Ｃｒは工具鋼の強度、とくに高温強度を高めると共に、
耐熱［１１２性を高めるのに有効な元素であって、この
ような効果を得るためには２．０％以上添加するのがよ
い。しかし、多すぎると靭性や加工性を劣化させるので
１０．０％以下とするのがよい。Cr increases the strength of tool steel, especially high-temperature strength, and
It is an effective element for increasing heat resistance [112], and in order to obtain such an effect, it is preferable to add it in an amount of 2.0% or more. However, if it is too large, the toughness and workability will deteriorate, so it is preferable to keep it at 10.0% or less.
Ｍｏ、Ｗ、Ｖは炭化物を形成し、熱処理硬さを増大して
耐摩耗性を向上させるのに有効な元素であるので、これ
らの１種または２種以上を添加するのもよい。この場合
、ＭｏはＷよりも効果が大きい元素であって、このよう
な効果を得るためには２Ｍｏ＋Ｗ（いずれか一方がＯで
ある場合も含む）で１．５％以上、■を０．５％以上添
加するのがよい。しかし、多すぎると靭性が低下すると
共に、粗大炭化物も多くなり、疲労特性に悪影響を及ぼ
すので２Ｍｏ＋Ｗは３０．０％以下、■は５．０％以下
とするのがよい。Mo, W, and V are elements that form carbides and are effective in increasing heat treatment hardness and improving wear resistance, so it is also good to add one or more of these. In this case, Mo is an element that has a greater effect than W, and in order to obtain such an effect, 2Mo + W (including the case where either one is O) must be 1.5% or more, and ■ 0.5%. It is preferable to add more than %. However, if the content is too high, the toughness decreases and the number of coarse carbides increases, which adversely affects fatigue properties, so it is preferable that 2Mo+W be 30.0% or less, and 2Mo+W be 5.0% or less.
Ｎｂ、Ｔａ、Ｚｒ、Ｈｆ、Ｔｉ 、Ｓｃ、Ｙはいずれも
炭化物を形成して熱処理硬さを増大し、耐摩耗性を向上
させるのに有効な元素であるので、これらの元素を適宜
選んで上記の範囲で添加するのもよい。Nb, Ta, Zr, Hf, Ti, Sc, and Y are all effective elements for forming carbides, increasing heat treatment hardness, and improving wear resistance, so these elements should be selected appropriately. It may be added within the above range.
Ｃｏ、Ｎｉ 、Ｃｕ、Ｂはいずれも基地を強化して工具
鋼の強度、耐衝撃性、耐ヒートチェック性を高めるので
、これらの元素を適宜選んで上記の範囲で添加するのも
よい。また、Ｂは鋼の焼入性を高めると共に、鋼中のＮ
をＢＮの形で固定してＮの悪影響をなくすのに有効な元
素であるので上記の範囲で適宜添加するのもよい。Since Co, Ni, Cu, and B all strengthen the matrix and improve the strength, impact resistance, and heat check resistance of tool steel, these elements may be appropriately selected and added within the above ranges. In addition, B increases the hardenability of steel, and N in steel
Since N is an effective element for fixing N in the form of BN and eliminating the adverse effects of N, it may be added as appropriate within the above range.
Ｍｇ、Ｃａ、Ｐｂ、Ｂｉ 、Ｔｅ、Ｓｅは鋼の被削性を
改善させるのに有効な元素であるのでこれらの１種また
は２種以上を上記の範囲で添加するのもよい。Since Mg, Ca, Pb, Bi, Te, and Se are effective elements for improving the machinability of steel, one or more of these may be added within the above range.
Ｎ、Ａ文、Ｐは工具鋼の靭性を低下するので前記した上
限に規制するのもよい。Since N, A, and P reduce the toughness of the tool steel, it is best to limit them to the above-mentioned upper limits.
この発明の他の実施態様においては、前記合金工具鋼が
冷間ダイス鋼であり、重量％で、Ｃ：０．３５〜２．５
０％、Ｓｉ：０．１〜２．０％、Ｍｎ：Ｏ，１〜１．５
％、Ｃｒ：３．Ｏ〜２０．０％、オヨびＭｏ：Ｏ，ｌＯ
〜５．０％。In another embodiment of the invention, the alloy tool steel is cold die steel, and in weight percent, C: 0.35 to 2.5.
0%, Si: 0.1-2.0%, Mn: O, 1-1.5
%, Cr:3. O ~ 20.0%, Oyobi Mo: O, lO
~5.0%.
Ｗ：Ｏ，ｌＯ〜５．０％、Ｖ：Ｏ，Ｏ１〜５．０％のう
ちの１種または２種以北、さらにＲＥＭ：０．００１−
０．６０％を含み、ｓ二〇、００２０％以下、Ｏ：０．
００３０％以下に規制し。W: O, lO~5.0%, V: O, O, one or two of the above 1~5.0%, and REM: 0.001-
Contains 0.60%, s20,0020% or less, O:0.
Regulated to 0.030% or less.
必要に応じて、Ｎｂ：０．０１〜５．０％、Ｔａ：０．
０１−５．０％、Ｚｒ＋０．００１〜２．０％、Ｈｆ：
０．００１〜２．０％、Ｔｉ：０．００１〜２．０％、
Ｓｃ：０．０１〜２．０％、Ｙ：０．ＯＯ１〜２．０％
の群と、Ｃｏ：１．Ｏ〜２０．０％、Ｎｊ：０．０１〜
２．０％、Ｃｕ：０．０１〜２．０％、Ｂ；０．００１
〜０．０５０％の群と、
Ｍｇ：０．００１−０．５％、Ｃａ：０．００２〜０．
０１％、Ｐｂ：０．４％以下、Ｂｉ ：０．５％以下、
Ｔｅ：０．３％以下、Ｓｅ：０．３％以下の群と、から
選ばれる１種以上の元素を含み、
さらに必要に応じて、Ｎ：０．０２０％以下。If necessary, Nb: 0.01 to 5.0%, Ta: 0.
01-5.0%, Zr+0.001-2.0%, Hf:
0.001-2.0%, Ti: 0.001-2.0%,
Sc: 0.01-2.0%, Y: 0. OO1~2.0%
and Co:1. O~20.0%, Nj:0.01~
2.0%, Cu: 0.01-2.0%, B; 0.001
~0.050% group, Mg: 0.001-0.5%, Ca: 0.002-0.
01%, Pb: 0.4% or less, Bi: 0.5% or less,
Contains one or more elements selected from the group Te: 0.3% or less, Se: 0.3% or less, and further, if necessary, N: 0.020% or less.
Ａｉ：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し、
残部実質的にＦｅよりなるものとすることができる。Ai: 0.020% or less, P: 0.020% or less, singly or in combination, and the remainder can be made to consist essentially of Fe.
ここで、Ｃは冷間ダイス鋼として必要な硬さおよび耐摩
耗性を確保するのに有効な元素であって、このような効
果を得るために０．３５％以上含有させるのがよい。し
かし、多すぎると靭性および加工性が低下するので２．
５０％以下とするのがよい。Here, C is an effective element for ensuring the hardness and wear resistance necessary for cold die steel, and in order to obtain such effects, it is preferably contained in an amount of 0.35% or more. However, if it is too large, the toughness and workability will decrease.
It is preferable to set it to 50% or less.
ＳＩは脱酸剤として作用すると共に焼もどし硬さの向上
、および靭性や耐食性の向上に有効な元素であって、こ
のような効果を得るために０．１％以上含有させるのが
よい、しかし、多量に添加すると熱間加工性を害すると
共に靭性を劣化させるので２．０％以下とするのがよい
。SI is an element that acts as a deoxidizing agent and is effective in improving tempering hardness, toughness, and corrosion resistance, and in order to obtain these effects, it is recommended to contain it in an amount of 0.1% or more. If added in large amounts, it impairs hot workability and deteriorates toughness, so the content is preferably 2.0% or less.
Ｍｎは脱酸および脱硫剤として作用し、鋼の清浄度を高
めると共に焼入性の向上にも寄与する元素であり、この
ような効果を得るために０９１％以り添加するのがよい
、しかし、多すぎると熱間加工性を害するので１．５％
以下とするのが良い。Mn is an element that acts as a deoxidizing and desulfurizing agent, increasing the cleanliness of steel and contributing to improving hardenability.To obtain these effects, it is recommended to add more than 0.91%. , 1.5% as too much will impair hot workability.
It is best to set it to the following.
Ｃｒは工具鋼の強度、とくに高温強度を高めると共に、
耐熱ｍ撃性を高めるのに有効な元素であって、このよう
な効果を得るためには３．０％以上添加するのがよい。Cr increases the strength of tool steel, especially high-temperature strength, and
It is an effective element for increasing heat shock resistance, and in order to obtain such an effect, it is preferably added in an amount of 3.0% or more.
しかし、多すぎると靭性や加工性を劣化させるので２０
．０％以下とするのがよい。However, if it is too large, it will deteriorate the toughness and workability, so 20
．． It is preferable to set it to 0% or less.
Ｍｏ 、Ｗ、Ｖは炭化物を形成し、熱処理硬さを増大し
て耐摩耗性を向上させるのに有効な元素であるので、こ
れらの１種または２種以上を添加するのもよい、そして
、このような効果を得るためにはＭＯを０．１０％以上
、Ｗを０．１０％以上、■を０．０１％以上添加するの
がよい、しかし、多すぎると靭性が低下すると共に、粗
大炭化物も多くなり、疲労特性に悪影響を及ぼすのでＭ
ｏは５．０％以下、Ｗは５．０％以下、■は５．０％以
下とするのがよい。Mo, W, and V are effective elements for forming carbides, increasing heat treatment hardness, and improving wear resistance, so it is also good to add one or more of these, and In order to obtain such an effect, it is better to add 0.10% or more of MO, 0.10% or more of W, and 0.01% or more of M
It is preferable that o be 5.0% or less, W be 5.0% or less, and ■ be 5.0% or less.
Ｎｂ、Ｔａ、Ｚｒ、Ｈｆ、Ｔｉ、Ｓｃ、Ｙはいずれも炭
化物を形成して熱処理硬さを増大し、耐摩耗性を向上さ
せるのに有効な元素であるので、これらの元素を適宜選
んで上記の範囲で添加するのもよい。Nb, Ta, Zr, Hf, Ti, Sc, and Y are all effective elements for forming carbides, increasing heat treatment hardness, and improving wear resistance, so these elements should be selected appropriately. It may be added within the above range.
Ｃｏ、Ｎｉ、Ｃｕ、Ｂはいずれも基地を強化して工具鋼
の強度、耐衝撃性、＃ヒートチェック性を高めるので、
これらの元素を適宜選んで上記の範囲で添加するのもよ
い、また、Ｂは鋼の焼入性を高めると共に、鋼中のＮを
ＢＮの形で固定してＮの悪影響をなくすのに有効な元素
であるので上記の範囲で適宜添加するのもよい。Co, Ni, Cu, and B all strengthen the base and increase the strength, impact resistance, and heat check properties of tool steel, so
It is also a good idea to select these elements appropriately and add them within the above range. B is also effective in improving the hardenability of steel and fixing N in steel in the form of BN to eliminate the negative effects of N. Since it is a natural element, it may be added as appropriate within the above range.
Ｍｇ、Ｃａ、Ｐｂ、Ｂｉ 、Ｔｅ、Ｓｅは鋼の被削性を
改善させるのに有効な元素であるのでこれらの１種また
は２種以上を上記の範囲で添加するのもよい。Since Mg, Ca, Pb, Bi, Te, and Se are effective elements for improving the machinability of steel, one or more of these may be added within the above range.
Ｎ、Ａ９．、Ｐは工具鋼の靭性を低下するので前記した
」−眼に規制するのもよい。N, A9. , P decreases the toughness of tool steel, so it is also a good idea to restrict it to the eyes as described above.
この発明のさらに他の実施態様においては、合金」二具
鋼が熱間ダイス鋼であり、ｉ’ｌｉ’量％で、Ｃ：０．
２０〜０．５０％、Ｓｉ：Ｏ，１〜２．０％、Ｍｎ：Ｏ
，ｌ−１，５％、Ｃｒ：２．０〜８．０％、およびＭｏ
：Ｏ，ｌＯ〜５．０％、Ｗ：Ｏ，ｌＯ〜５．０％、Ｖ：
０．０１〜５．０％のうちの１種または２種以上、さら
にＲＥＭ：０．００１〜０．６０％を含み、Ｓ。In yet another embodiment of the present invention, the alloy steel is a hot die steel, and the amount of i'li' is C: 0.
20-0.50%, Si:O, 1-2.0%, Mn:O
, l-1,5%, Cr:2.0-8.0%, and Mo
:O, lO~5.0%, W:O, lO~5.0%, V:
One or more of 0.01 to 5.0%, further containing REM: 0.001 to 0.60%, and S.
０．００２０％以下、Ｏ：０．００３０％以下に規制し
、
必要に応じて、Ｎｂ：０．０１〜５．０％、Ｔａ：０．
０１〜５．０％、Ｚｒ：０．００１〜２．０％以下、Ｈ
ｆ：０．００１〜２．０％。0.0020% or less, O: 0.0030% or less, and if necessary, Nb: 0.01-5.0%, Ta: 0.
01-5.0%, Zr: 0.001-2.0% or less, H
f: 0.001-2.0%.
Ｔｉ ：Ｏ，ＯＯｌ 〜２．０％、Ｓｃ：０．００１〜
２．０％、Ｙ：０．ＯＯ１〜２．０％の群と、
Ｃｏ：０．０１〜１０．０％、Ｎｉ＋Ｏ，Ｏ１〜２．０
％、Ｃｕ＋０．０１〜２．０％、Ｂ＋０．００１−０．
０５０％の群と。Ti:O,OOl ~2.0%, Sc:0.001~
2.0%, Y:0. OO1-2.0% group, Co:0.01-10.0%, Ni+O, O1-2.0
%, Cu+0.01-2.0%, B+0.001-0.
050% group.
Ｍｇ：Ｏ，ＯＯｌ 〜ｏ、ｓ％、Ｃａ：０．００２〜０
．０１％、Ｐｂ：０．４％以下、Ｂｉ ：０５％以下、
Ｔｅ：０．３％以下、Ｓｅ＋０．３％以下の群と、から
選ばれる１種以上の元素を含み、
さらに必要に応じて、Ｎ・０．０２０％以下。Mg:O,OOl~o,s%, Ca:0.002~0
．． 01%, Pb: 0.4% or less, Bi: 05% or less,
Contains one or more elements selected from the group Te: 0.3% or less, Se + 0.3% or less, and if necessary, N.0.020% or less.
Ａ文：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し、残部実質的にＦｅよりなるものと
することができる。A text: 0.020% or less, P: 0.020% or less, singly or in combination, and the remainder can be made to consist essentially of Fe.
ここで、Ｃは峡間ダイス鋼として必要な硬さおよび耐摩
耗性を確保するのに有効な元素であって、このような効
果を得るために０．２０％以上含有させるのがよい。し
かし、多すぎると靭性および加工性が低下するので０．
５０％以下とするのがよい。Here, C is an effective element for ensuring the hardness and wear resistance necessary for a gap die steel, and in order to obtain such effects, it is preferably contained in an amount of 0.20% or more. However, if it is too large, the toughness and workability will decrease, so 0.
It is preferable to set it to 50% or less.
Ｓｔは脱酸剤として作用すると共に焼もどし硬さの向上
、および靭性や耐食性の向上に有効な元素であって、こ
のような効果を得るために０９１％以上含有させるのが
よい。しかし、多量に添加すると熱間加工性を害すると
共に靭性を劣化させるので２．０％以下とするのがよい
。St is an element that acts as a deoxidizing agent and is effective in improving tempering hardness, toughness, and corrosion resistance, and is preferably contained in an amount of 0.91% or more to obtain such effects. However, if added in a large amount, it impairs hot workability and deteriorates toughness, so the content is preferably 2.0% or less.
Ｍｎは脱酸および脱硫剤として作用し、鋼の清浄度を高
めると共に焼入性の向上にも寄与する元素であり、この
ような効果を得るために０．１％以上添加するのがよい
。しかし、多すぎると熱間加工性を害するので１．５％
以下とするのが良い。Mn is an element that acts as a deoxidizing and desulfurizing agent, increasing the cleanliness of steel and contributing to improving hardenability, and in order to obtain such effects, it is preferable to add 0.1% or more. However, if it is too high, it will impair hot workability, so 1.5%
It is best to set it to the following.
Ｃｒは工具鋼の強度、とくに高温強度を高めると共に、
耐熱衝撃性を高めるのに有効な元素であって、このよう
な効果を得るためには２．０％以上添加するのがよい。Cr increases the strength of tool steel, especially high-temperature strength, and
It is an effective element for increasing thermal shock resistance, and in order to obtain such an effect, it is preferable to add it in an amount of 2.0% or more.
しかし、多すぎると靭性や加工性を劣化させるので８．
０％以下とするのがよい。However, if there is too much, the toughness and workability will deteriorate, so 8.
It is preferable to set it to 0% or less.
Ｍｏ 、Ｗ、Ｖは炭化物を形成し、熱処理硬さを増大し
て耐摩耗性を向上させるのに有効な元素であるので、こ
れらの１種または２種以上を添加するのもよい、そして
、このような効果を得るためにはＭｏを０．１０％以上
、Ｗを０．１０％以上、■を０．０１％以上添加するの
がよい、しかし、多すぎると靭性が低下すると共に、粗
大炭化物も多くなり、疲労特性に悪影響を及ぼすのでＭ
ｏは５．０％以下、Ｗは５．０％以下、■は５．０％以
下とするのがよい。Mo, W, and V are effective elements for forming carbides, increasing heat treatment hardness, and improving wear resistance, so it is also good to add one or more of these, and In order to obtain such an effect, it is better to add Mo at 0.10% or more, W at 0.10% or more, and ■ at least 0.01%. M
It is preferable that o be 5.0% or less, W be 5.0% or less, and ■ be 5.0% or less.
Ｎｂ、Ｔａ、Ｚｒ、Ｈｆ、Ｔｉ 、Ｓｃ、Ｙはいずれも
炭化物を形成して熱処理硬さを増大し、耐摩耗性を向上
させるのに有効な元素であるので、これらの元素を適宜
選んで上記の範囲で添加するのもよい。Nb, Ta, Zr, Hf, Ti, Sc, and Y are all effective elements for forming carbides, increasing heat treatment hardness, and improving wear resistance, so these elements should be selected appropriately. It may be added within the above range.
Ｃｏ、Ｎｉ、Ｃｕ、Ｂはいずれも基地を強化しして工具
鋼の強度、耐衝撃性、＃ヒートチェック性を高めるので
、これらの元素を適宜選んで上記の範囲で添加するもの
よい。また、Ｂは鋼の焼入性を高めると共に、鋼中のＮ
をＢＮの形で固定してＮの悪影響をなくすのに有効な元
素であるので」１記の範囲で適宜添加するのもよい。Since Co, Ni, Cu, and B all strengthen the matrix and improve the strength, impact resistance, and #heat check properties of tool steel, it is preferable to select these elements as appropriate and add them within the above ranges. In addition, B increases the hardenability of steel, and N in steel
Since it is an effective element for fixing N in the form of BN and eliminating the adverse effects of N, it may be added as appropriate within the range specified in 1.
Ｍｇ、Ｃａ、Ｐｂ、Ｂｉ、Ｔｅ、Ｓｅは鋼の被削性を改
善させるのに有効な元素であるのでこれらの１種または
２種以上を上記の範囲で添加するのもよい。Since Mg, Ca, Pb, Bi, Te, and Se are effective elements for improving the machinability of steel, one or more of these may be added within the above range.
Ｎ、Ａｌ、Ｐは工具鋼の靭性を低下するので前記した上
限に規制するのもよい。Since N, Al, and P reduce the toughness of tool steel, it is advisable to limit them to the above-mentioned upper limits.
この発明のさらに他の実施態様においては、合金工具鋼
が鋳造用工具であり、重量％で、Ｃ：１．０〜４．０％
、Ｓｉ：０．０３〜３．００％、Ｍｎ：０．０５〜１０
．０％、ｃｒ：２５．０〜３５．０％、Ｃｏ：３５．０
〜６５．０％、オヨびＭｏ：０．０５〜１５．０％、Ｗ
： ｉｏ、ｏ 〜２５．０％、Ｖ：０．１〜１５．０％
のうちの１種または２種以上、さらにＲＥＭ：０．００
１−０．６０％を含み、Ｓ二０．００２０％以下、Ｏ：
Ｑ、００３０％以下に規制し、
必要に応じて、Ｎｂ：Ｏ，１〜１５．０％、Ｔａ：０．
１−１０．０％、Ｚｒ：０．０１−０．５％、Ｈｆ：２
．０％以下、Ｔｊ：０．０１〜０．５％、Ｓｃ：０．０
０１〜２．０％、Ｙ：２．０％以−ドの群と、
Ｎｉ ： Ｏ，０ｆ−１５，０％、Ｃｕ：０．０１〜２
．０％、Ｂ：０．００５〜０．８％の群と、Ｍｇ：０．
００１ ＮＯ，５％、Ｃａ：０．００２〜０．０１％、
Ｐｂ：０．４％以下、Ｂｉ ：０．５％以下、Ｔｅ：０
．３％以下、Ｓｅ：０．３％以下の群と、がら選ばれる
１種以上の元素を含み、
さらに必要に応じて、Ｎ：０．０２０％以下。In yet another embodiment of the invention, the alloy tool steel is a casting tool, and in weight percent C: 1.0-4.0%.
, Si: 0.03-3.00%, Mn: 0.05-10
．． 0%, cr: 25.0-35.0%, Co: 35.0
~65.0%, Oyobi Mo: 0.05~15.0%, W
: io, o ~25.0%, V:0.1~15.0%
One or more of the following, and REM: 0.00
1-0.60%, S2 0.0020% or less, O:
Q, regulated to 0.030% or less, Nb:O, 1 to 15.0%, Ta: 0.0%, if necessary.
1-10.0%, Zr: 0.01-0.5%, Hf: 2
．． 0% or less, Tj: 0.01-0.5%, Sc: 0.0
01-2.0%, Y: 2.0% or more group, Ni: O, 0f-15.0%, Cu: 0.01-2
．． 0%, B: 0.005-0.8% group, and Mg: 0.0%.
001 NO, 5%, Ca: 0.002-0.01%,
Pb: 0.4% or less, Bi: 0.5% or less, Te: 0
．． 3% or less, Se: 0.3% or less, and one or more elements selected from the group, and if necessary, N: 0.020% or less.
Ａ１：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し、残部実質的にＦｅよりなるものと
することができる。A1: 0.020% or less, P: 0.020% or less, singly or in combination, and the remainder can be made to consist essentially of Fe.
ここで、Ｃはマトリックス組織をオーステナイトに保つ
と共に、鋳造凝固時に炭化物を形成して硬さを増大し、
耐摩耗性を向上させるのに有効な元素であり、このよう
な効果を得るために１．０％以上含有させるのがよい。Here, C maintains the matrix structure as austenite, and forms carbides during casting solidification to increase hardness.
It is an effective element for improving wear resistance, and in order to obtain such an effect, it is preferably contained in an amount of 1.0% or more.
しがし、多すぎると炭化物量が過大となり、粗大炭化物
を形成しゃすくなって靭性を低下させるので４．０％以
下とするのがよい。However, if it is too large, the amount of carbides becomes too large, which tends to form coarse carbides and reduces toughness, so the content is preferably 4.0% or less.
Ｓｉは脱酸剤として作用すると共に鋳造性を向上させる
のに有効な元素であって、このような効果を得るために
０．０３％以上含有させるのがよい、しかし、多すぎる
と熱間加工性および靭性を害するので３．００％以下と
するのがよい。Si is an element that acts as a deoxidizing agent and is effective in improving castability, and in order to obtain this effect, it is best to contain it at 0.03% or more. However, if it is too large, hot processing It is preferable to keep it at 3.00% or less since it impairs the properties and toughness.
Ｍｎは脱酸および脱硫剤として作用し、鋼の清浄度を高
めるのに有効な元素であって、このためｔこは０．０５
％以上含有させるのがよい。そして、ある程度含有させ
ることによってマトリックス組織をオーステナイトにす
ることができるが、多量に含有しても効果の向上は得ら
れないので１０．０％以下とするのがよい。Mn acts as a deoxidizing and desulfurizing agent, and is an effective element for increasing the cleanliness of steel.
% or more is preferable. Although the matrix structure can be changed to austenite by containing it to a certain extent, the effect cannot be improved even if it is contained in a large amount, so the content is preferably 10.0% or less.
Ｃｒは固溶によっであるいは炭化物形成によって硬化す
ることにより耐摩耗性を向上させ、さらには高温下での
耐酸化性を向上させるのに有効な元素であり、このよう
な効果を得るために２５％以上含有させるのがよい、し
かし、多すぎるとＣ量とのバランスにより炭化物量が多
くなりすぎ、粗大炭化物を形成しやすくなって靭性を低
下させるので３５％以下とするのがよい。Cr is an effective element for improving wear resistance by hardening through solid solution or carbide formation, and further improving oxidation resistance at high temperatures. The content is preferably 25% or more. However, if it is too large, the amount of carbides becomes too large due to the balance with the C content, making it easier to form coarse carbides and reducing toughness, so the content is preferably 35% or less.
Ｃｏはオーステナイトを安定にし、ｍｓ衾性を向上させ
ると共に、高温における基地の強度および靭性を向」ニ
させるのに有効な元素であり、このような効果を得るた
めに３５．０％以上含有させるのがよい。しかし、多量
に添加しすぎても効果の向上はさほど大きくなく、また
高価な元素でもあるので６５．０％以下とするのがよい
。Co is an effective element for stabilizing austenite, improving its MS structure, and improving the strength and toughness of the matrix at high temperatures.In order to obtain these effects, Co is contained in an amount of 35.0% or more. It is better. However, even if it is added in too large an amount, the effect will not be improved very much, and it is also an expensive element, so it is preferable to limit it to 65.0% or less.
Ｎｉ、Ｃｕはマトリックス組織をオーステナイトに保ち
、耐腐食性や耐焼付性を向上させるのに有効な元素であ
るので、上記の範囲で添加するのもよい。Since Ni and Cu are effective elements for maintaining the matrix structure as austenite and improving corrosion resistance and seizure resistance, they may be added within the above range.
Ｗ、Ｍｏ、Ｖは高硬度の炭化物を形成して耐摩耗性を向
上させるのに有効な元素であり、このような効果を得る
ためにＷは１０．０％以上、Ｍ。W, Mo, and V are effective elements for forming highly hard carbides and improving wear resistance, and in order to obtain such an effect, W and M must be contained in an amount of 10.0% or more.
は０．０５％以上、■は０．１％以上含有させるのがよ
い。しかし、多すぎると耐熱衝撃性を劣化し、割れ発生
の原因ともなるので、Ｗは２５％以下、Ｍｏは１５．０
％以下、ｖは１５．Ｑ％以下とするのがよい。It is preferable to contain 0.05% or more, and 0.1% or more of (2). However, if the amount is too high, it will deteriorate the thermal shock resistance and cause cracking, so W should be 25% or less, and Mo should be 15.0% or less.
% or less, v is 15. It is better to keep it below Q%.
Ｎｂ、Ｔａ、Ｚｒ、Ｈｆ、Ｔｊ 、Ｓｃ、Ｙはいずれも
炭化物形成元素であり、高硬度の炭化物を形成して耐摩
耗性を向上させるのに有効な元素であるので、これらの
中から適宜選んで上記の範囲内で添加することもよい。Nb, Ta, Zr, Hf, Tj, Sc, and Y are all carbide-forming elements, and are effective elements for forming high-hardness carbides and improving wear resistance. It is also possible to select and add within the above range.
Ｂは鋼の焼入性を高めると共に、鋼中のＮをＢＮの形で
固定してＮの悪影響をなくすのに有効な元素であるので
上記の範囲で適宜添加するのもよい。B is an element effective in improving the hardenability of steel and fixing N in the steel in the form of BN to eliminate the adverse effects of N, so it may be added as appropriate within the above range.
Ｍｇ、Ｃａ、Ｐｂ、Ｂｉ、Ｔｅ、Ｓｅは工具材料の被削
性を改善させるのに有効な元素であるのでこれらの１種
または２種以上を上記の範囲で添加するのもよい。Since Mg, Ca, Pb, Bi, Te, and Se are effective elements for improving the machinability of the tool material, one or more of these may be added within the above range.
Ｎ、Ａｎ、Ｐは工具鋼の靭性を低下するので前記した上
限に規制するのもよい。Since N, An, and P reduce the toughness of the tool steel, it is advisable to restrict them to the above-mentioned upper limits.
（実施例）
真空誘導溶解炉によって各種成分の工具材料を溶製し、
溶解温度１５３０〜１５５０℃のときにＲＥＭを添加し
て攪拌し、第１表−１および２に示す化学成分の材料を
溶製したのち、造塊してインゴットを得た。(Example) Tool materials of various components were melted using a vacuum induction melting furnace,
When the melting temperature was 1,530 to 1,550°C, REM was added and stirred to melt the material having the chemical components shown in Table 1-1 and 2, and then form an ingot to obtain an ingot.
次に、前記インゴットを７００〜７５０℃に３時間加熱
したのち鍛造し、次いで８００℃で３時間加熱したのち
２０°Ｏ／ｂｙで冷却する溶体化処理を行い、その後地
紙等級、熱間加工性および疲労特性を調べた。なお、地
紙等級はＪＩＳ Ｇｅ２Ｓ３に準じて行った肉眼試験に
より調べ、熱間加工性はグリ−プル試験により調べ、疲
労特性はＪＩＳ Ｚ ２２７３に準じた試験により調べ
た。これらの結果を第２表−１および２に示す。Next, the ingot was heated to 700 to 750°C for 3 hours, then forged, then heated at 800°C for 3 hours, and then subjected to solution treatment by cooling at 20°O/by, followed by base paper grade and hot processing. The durability and fatigue properties were investigated. The base paper grade was determined by a visual test conducted in accordance with JIS Ge2S3, hot workability was determined by a Grieple test, and fatigue properties were determined by a test conducted in accordance with JIS Z 2273. These results are shown in Tables 2-1 and 2.
第２表−１
第２表−２
第１表および第２表に示すように各種合金工具鋼におい
て、ＲＥＭ （Ｙを含む希土類元素の１種または２種以
上）を０．００１〜０．６０重量％の範囲で含有させる
とともに、Ｓを０．００２０重量％以下、０を０．００
３０％重量％以下に規制した本発明鋼は、いずれも比較
鋼よりも板疵が少なく、熱間加工性および疲労特性にも
優れていることが明らかであり、高品質・高耐久性の工
具鋼であることが確かめられた。Table 2-1 Table 2-2 As shown in Tables 1 and 2, in various alloy tool steels, REM (one or more rare earth elements including Y) is 0.001 to 0.60. In addition to containing S in the range of 0.0020% by weight or less, 0 is 0.00% by weight.
It is clear that the steels of the present invention, which are regulated at 30% by weight or less, have fewer plate defects than the comparative steels, have better hot workability and fatigue properties, and can be used as tools of high quality and high durability. It was confirmed to be steel.
（発明の効果）
以上説明してきたように、この発明は、高速度工具鋼、
冷間ダイス鋼、熱間ダイス鋼、鋳造用工具等々の合金工
具鋼において、ＲＥＭ：０．００１〜０．６０重量％含
有させると共に。(Effects of the invention) As explained above, the present invention provides high-speed tool steel,
In alloy tool steels such as cold die steel, hot die steel, casting tools, etc., REM: 0.001 to 0.60% by weight is contained.
Ｓ：０．００２０重量％以下、Ｏ：０．００３０重量％
以下に規制したから、熱間加工性および靭性とくに耐＃
１１１性に優れ、疲労強度が大であって長寿命の工具が
得られるという著大なる効果を有している。S: 0.0020% by weight or less, O: 0.0030% by weight
Because of the following regulations, hot workability and toughness, especially # resistance
It has the remarkable effect of providing a tool with excellent 111 properties, high fatigue strength, and long life.
Claims (1)
．６０重量％含有させると共に、Ｓ：０．００２０重量
％以下、Ｏ：０．００３０重量％以下に規制したことを
特徴とする合金工具鋼。 （２）合金工具鋼が、重量％で、Ｃ：０．３５〜１．５
０％、Ｓｉ：０．１〜２．０％、Ｍｎ：０．１〜１．５
％、Ｃｒ：２．０〜１０．０％、および２Ｍｏ＋Ｗ＋
１．５〜３０．０％、■：０．５〜５．０％のうちの１
種または２種以上、さらにＲＥＭ： ０．００１〜０．
６０％を含み、Ｓ ： ０．００２０％以下、Ｏ：０．
００３０％以下に規制し、 必要に応じて、Ｎｂ：０．０１〜５．０％、Ｔａ−。 ０．０１〜５．０％、Ｚｒ：２．０％以下。 Ｈｆ：２．０％以下、Ｔｉ：２．０％以下、 Ｓ ｃ：
０．００１〜２．０％、Ｙ：２．０％以下の群と、 Ｃｏ：１．０−２０．０％、Ｎｉ＋０．０１〜２．０％
、Ｃｕ：０．２５−１．０％、Ｂ：０．００１〜０．０
５０％の群と、 Ｍｇ：０．００１−０．５％、Ｃａ：０．００２〜０．
０１％、Ｐｂ：０．４％以下、Ｂｉ ：０．５％以下、
Ｔｅ：０．３％以下、Ｓｅ：０．３％以下の群と、から
選ばれる１種以上の元素を含み、 さらに必要に応じて、Ｎ：０．０２０％以下。 Ａ文：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し、 残部実質的にＦｅよりなる特許請求の範囲ｐｆ４（１）
項記載の合金工具鋼。 （３）合金工具鋼が、重量％で、Ｃ：０．３５〜２．５
０％、Ｓｉ：Ｏ，１〜２．０％、Ｍｎ：０．１−１．５
％、Ｃｒ：３．Ｏ〜２０．０％、およびＭｏ：０．ｌＯ
〜５．０％、Ｗ：０．１０〜５．０％、Ｖ：Ｏ，Ｏ１〜
５．０％のうちのｌ種または２種以上、さらにＲＥＭ・
ｏ、ｏｏｉ〜０．６０％を含み、Ｓ：０．００２０％以
下、０；０゜００３０％以下に規制し、 必要に応じて、Ｎｂ：０．０１〜５．０％、Ｔａ：０．
０１〜５．０％、Ｚｒ：０．００１〜２．０％、Ｈｆ：
０．００１〜２．０％、Ｔｉ：０．００１〜２．０％、
Ｓｃ：０．０１〜２．０％、Ｙ：０．０Ｏ１〜２．０％
の群と、Ｃｏ：１．Ｏ〜２０．０％、Ｎｉ：０．０１〜
２．０％、Ｃｕ：Ｏ，ＯＬ 〜２．０％、Ｂ：０．００
１−０．０５０％の群と、 Ｍｇ：Ｏ，ＯＯｌ 〜０．５％、Ｃａ：０．００２〜０
．０１％、Ｐｂ：０．４％以下、Ｂｊ ：０．５％以下
、Ｔｅ：０．３％以下、Ｓｅ：０．３％以下の群と、か
ら選ばれる１種以上の元素を含み、 さらに必要に応じて、Ｎ ： ０ 、０．２０％以下。 Ａ文：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し、 残部実質的にＦｅよりなる特許請求の範囲第（１）項記
載の合金工具鋼。 （４）合金工具鋼が、重量％で、Ｃ：０．２０〜０．５
０ ％、Ｓｉ：Ｏ，Ｌ 〜 ２．０ ％、Ｍ ｎ ：０
．１−１．５％、Ｃｒ：２．０〜８．０％、およびＭｏ
：０．１０〜５．０％、Ｗ：０．１０〜５．０％、Ｖ：
０．０１〜５．０％のうちの１種または２種以上、ざら
にＲＥＭ：０．００１〜０．６０％を含み、Ｓ：０．０
０２０％以下、０： ０．００３０％以下シこ規制し、 必要に応じて、Ｎｂ：０．０１〜５．０％、Ｔａ：０．
０１〜５．０％、Ｚｒ：０．００１〜２．０％、Ｈｆ：
０．００１〜２．０％、Ｔｉ：０．００１〜２．０％、
Ｓｃ：０．００１〜２．０％、Ｙ：０．ＯＯ１〜２．０
％の群と、Ｃｏ：Ｏ，０ＩＮＩＯ，０％、Ｎｉ：０．０
１〜２．０％、Ｃｕ：０．０１〜２．０％ｌＢ：ｏ、ｏ
ｏｉ〜０．０５０％の群と、 Ｍｇ：０．００１〜０．５％、Ｃａ：０．００２〜０．
０１％、Ｐｂ：０．４％以下、Ｂｉ：０．５％以下、Ｔ
ｅ：０．３％以下、Ｓｅ：０．３％以下の群と、から選
ばれる１種以上の元素を含み、 さらに必要に応じて、Ｎ：０．０２０％以下。 Ａ立：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し、 残部実質的にＦｅよりなる特許請求の範囲第（１）項記
載の合金工具鋼。 （５）合金工具鋼が、重量％で、Ｃ：Ｌ、Ｏ〜４．０％
、Ｓｉ：０．０３〜３．００％、Ｍｎ：０．０５〜１０
．０％、Ｃｒ：２５．Ｏ〜３５．０％、Ｃｏ：３５．Ｏ
〜８５．０％、およびＭｏ：０．０５〜１５．０％、Ｗ
：ｌＯ，Ｏ〜２５．０％、Ｖ：０．１〜１５．０％のう
ちの１種または２種以上、さらにＲＥＭ：Ｏ，ＯＯ１〜
０．６０％を含み、Ｓ：０．００２０％以下、０：０．
００３０％以下に規制し、 必要に応じて、Ｎｂ：０．１〜１５．０％、Ｔａ＋０．
１ Ｎ１０．０％、Ｚｒ：０．０１〜０．５％、Ｈｆ：
２．０％以下、Ｔｉ ：Ｏ，Ｏ２Ｎ２．５％、Ｓｃ：Ｏ
，ＯＯ１〜２．０％ｌＹ：２．０％以下の群と、 Ｎｉ：０．Ｏｌ 〜１５．０％、Ｃｕ：０．０１〜２．
０％、Ｂ：０．００５〜０．８％の群と、Ｍｇ：Ｏ，Ｏ
Ｏｌ 〜０．５％、Ｃａ：０．００２〜０゜０１％、Ｐ
ｂ：０．４％以下、Ｂｉ ：０．５％以下、Ｔｅ：０．
３％以下、Ｓｅ：０．３％以下の群と、から選ばれる１
種以上の元素を含み、 さらに必要に応じて、Ｎ：０．０２０％以下。 Ａｕ：０．０２０％以下、Ｐ：０．０２０％以下に単独
または複合で規制し、 残部実質的にＦｅよりなる特許請求の範囲＠（１）項記
載の合金工具鋼。[Claims] (1) In alloy tool steel, REM: 0.001 to 0
．． An alloy tool steel characterized by containing 60% by weight, S: 0.0020% by weight or less, and O: 0.0030% by weight or less. (2) Alloy tool steel has C: 0.35 to 1.5 in weight%
0%, Si: 0.1-2.0%, Mn: 0.1-1.5
%, Cr:2.0-10.0%, and 2Mo+W+
1.5-30.0%, ■: 1 out of 0.5-5.0%
species or two or more species, further REM: 0.001 to 0.
60%, S: 0.0020% or less, O: 0.
Nb: 0.01-5.0%, Ta-. 0.01 to 5.0%, Zr: 2.0% or less. Hf: 2.0% or less, Ti: 2.0% or less, S c:
0.001-2.0%, Y: 2.0% or less group, Co: 1.0-20.0%, Ni+0.01-2.0%
, Cu: 0.25-1.0%, B: 0.001-0.0
50% group, Mg: 0.001-0.5%, Ca: 0.002-0.
01%, Pb: 0.4% or less, Bi: 0.5% or less,
Contains one or more elements selected from the group Te: 0.3% or less, Se: 0.3% or less, and further, if necessary, N: 0.020% or less. Sentence A: 0.020% or less, P: 0.020% or less individually or in combination, and the remainder substantially consists of Fe Claims pf4 (1)
Alloy tool steel as described in section. (3) Alloy tool steel has C: 0.35 to 2.5 in weight%
0%, Si:O, 1-2.0%, Mn:0.1-1.5
%, Cr:3. O~20.0%, and Mo: 0. lO
~5.0%, W: 0.10~5.0%, V: O, O1~
Type 1 or 2 or more of 5.0%, and REM・
o, ooi~0.60%, S: 0.0020% or less, 0:0°0030% or less, Nb: 0.01~5.0%, Ta: 0.
01-5.0%, Zr: 0.001-2.0%, Hf:
0.001-2.0%, Ti: 0.001-2.0%,
Sc: 0.01-2.0%, Y: 0.0O1-2.0%
and Co:1. O~20.0%, Ni:0.01~
2.0%, Cu:O,OL ~2.0%, B:0.00
1-0.050% group, Mg:O,OOl~0.5%, Ca:0.002~0
．． 01%, Pb: 0.4% or less, Bj: 0.5% or less, Te: 0.3% or less, Se: 0.3% or less, and further If necessary, N: 0, 0.20% or less. The alloy tool steel according to claim (1), wherein A: 0.020% or less, P: 0.020% or less, singly or in combination, and the remainder substantially consists of Fe. (4) Alloy tool steel has C: 0.20 to 0.5 in weight%
0%, Si:O,L~2.0%, Mn:0
．． 1-1.5%, Cr:2.0-8.0%, and Mo
:0.10~5.0%, W:0.10~5.0%, V:
One or more of 0.01 to 5.0%, REM: 0.001 to 0.60%, S: 0.0
Nb: 0.01 to 5.0%, Ta: 0.020% or less, 0: 0.0030% or less, if necessary.
01-5.0%, Zr: 0.001-2.0%, Hf:
0.001-2.0%, Ti: 0.001-2.0%,
Sc: 0.001-2.0%, Y: 0. OO1~2.0
% group, Co:O,0INIO,0%, Ni:0.0
1-2.0%, Cu: 0.01-2.0% lB: o, o
oi~0.050% group, Mg: 0.001~0.5%, Ca: 0.002~0.
01%, Pb: 0.4% or less, Bi: 0.5% or less, T
Contains one or more elements selected from the group e: 0.3% or less, Se: 0.3% or less, and further, if necessary, N: 0.020% or less. The alloy tool steel according to claim 1, wherein A: 0.020% or less, P: 0.020% or less, singly or in combination, and the remainder substantially consists of Fe. (5) Alloy tool steel is C:L, O ~ 4.0% by weight
, Si: 0.03-3.00%, Mn: 0.05-10
．． 0%, Cr:25. O~35.0%, Co:35. O
~85.0%, and Mo: 0.05~15.0%, W
: 1O, O~25.0%, V: 0.1~15.0%, and REM: O, OO1~
Contains 0.60%, S: 0.0020% or less, 0:0.
Nb: 0.1 to 15.0%, Ta+0.0% or less, if necessary.
1 N10.0%, Zr: 0.01-0.5%, Hf:
2.0% or less, Ti:O, O2N2.5%, Sc:O
, OO1-2.0%, Y: 2.0% or less group, and Ni: 0. Ol ~15.0%, Cu:0.01~2.
0%, B:0.005-0.8% group, and Mg:O,O
Ol ~0.5%, Ca: 0.002~0°01%, P
b: 0.4% or less, Bi: 0.5% or less, Te: 0.
3% or less, Se: 0.3% or less, and 1 selected from the group
Contains more than one element, and if necessary, N: 0.020% or less. The alloy tool steel according to claim (1), wherein Au: 0.020% or less, P: 0.020% or less, singly or in combination, and the remainder substantially consists of Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7980284A JPS60224754A (en) | 1984-04-19 | 1984-04-19 | Alloy tool steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7980284A JPS60224754A (en) | 1984-04-19 | 1984-04-19 | Alloy tool steel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7231779A Division JP2636816B2 (en) | 1995-09-08 | 1995-09-08 | Alloy tool steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60224754A true JPS60224754A (en) | 1985-11-09 |
| JPH0555585B2 JPH0555585B2 (en) | 1993-08-17 |
Family
ID=13700344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7980284A Granted JPS60224754A (en) | 1984-04-19 | 1984-04-19 | Alloy tool steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60224754A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6357743A (en) * | 1986-08-27 | 1988-03-12 | Daido Steel Co Ltd | High-carbon alloy tool steel excellent in hot workability |
| JPS648252A (en) * | 1987-06-29 | 1989-01-12 | Hitachi Metals Ltd | High-speed tool steel |
| JPS6431952A (en) * | 1987-07-29 | 1989-02-02 | Daido Steel Co Ltd | Cold tool steel |
| WO1996025530A1 (en) * | 1995-02-14 | 1996-08-22 | Nippon Steel Corporation | High-strength ferritic heat-resistant steel excellent in resistance to embrittlement caused by intermetallic compound deposition |
| US5772956A (en) * | 1995-02-14 | 1998-06-30 | Nippon Steel Corporation | High strength, ferritic heat-resistant steel having improved resistance to intermetallic compound precipitation-induced embrittlement |
| JP2002060906A (en) * | 2000-08-11 | 2002-02-28 | Sumitomo Metal Ind Ltd | Non-ferrous metal casting tools and tool steels therefor |
| JP2006193790A (en) * | 2005-01-14 | 2006-07-27 | Daido Steel Co Ltd | Cold working tool steel |
| CN100457952C (en) * | 2007-06-26 | 2009-02-04 | 郑州航空工业管理学院 | Casting high speed steel cutter and preparation method thereof |
| JP2010174319A (en) * | 2009-01-29 | 2010-08-12 | Daido Steel Co Ltd | Steel for plastic molding mold, and plastic molding mold |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988917A (en) * | 1995-09-29 | 1997-03-31 | Nec Corp | Lock apparatus |
| CN103774045A (en) * | 2014-01-09 | 2014-05-07 | 马鞍山市恒毅机械制造有限公司 | High-speed tool steel material for drill bits and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5131084A (en) * | 1974-09-10 | 1976-03-16 | Japan Storage Battery Co Ltd | METARUHARAIDOR ANPU |
| JPS54127820A (en) * | 1978-03-28 | 1979-10-04 | Nippon Steel Corp | High toughness steel material for hot working |
| JPS54128418A (en) * | 1978-03-30 | 1979-10-05 | Daido Steel Co Ltd | Bearing steel |
| JPS5785952A (en) * | 1980-11-17 | 1982-05-28 | Daido Steel Co Ltd | High-speed steel |
| JPS57143471A (en) * | 1981-02-28 | 1982-09-04 | Daido Steel Co Ltd | High-speed steel |
-
1984
- 1984-04-19 JP JP7980284A patent/JPS60224754A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5131084A (en) * | 1974-09-10 | 1976-03-16 | Japan Storage Battery Co Ltd | METARUHARAIDOR ANPU |
| JPS54127820A (en) * | 1978-03-28 | 1979-10-04 | Nippon Steel Corp | High toughness steel material for hot working |
| JPS54128418A (en) * | 1978-03-30 | 1979-10-05 | Daido Steel Co Ltd | Bearing steel |
| JPS5785952A (en) * | 1980-11-17 | 1982-05-28 | Daido Steel Co Ltd | High-speed steel |
| JPS57143471A (en) * | 1981-02-28 | 1982-09-04 | Daido Steel Co Ltd | High-speed steel |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6357743A (en) * | 1986-08-27 | 1988-03-12 | Daido Steel Co Ltd | High-carbon alloy tool steel excellent in hot workability |
| JPS648252A (en) * | 1987-06-29 | 1989-01-12 | Hitachi Metals Ltd | High-speed tool steel |
| JPS6431952A (en) * | 1987-07-29 | 1989-02-02 | Daido Steel Co Ltd | Cold tool steel |
| WO1996025530A1 (en) * | 1995-02-14 | 1996-08-22 | Nippon Steel Corporation | High-strength ferritic heat-resistant steel excellent in resistance to embrittlement caused by intermetallic compound deposition |
| US5772956A (en) * | 1995-02-14 | 1998-06-30 | Nippon Steel Corporation | High strength, ferritic heat-resistant steel having improved resistance to intermetallic compound precipitation-induced embrittlement |
| JP2002060906A (en) * | 2000-08-11 | 2002-02-28 | Sumitomo Metal Ind Ltd | Non-ferrous metal casting tools and tool steels therefor |
| JP2006193790A (en) * | 2005-01-14 | 2006-07-27 | Daido Steel Co Ltd | Cold working tool steel |
| CN100457952C (en) * | 2007-06-26 | 2009-02-04 | 郑州航空工业管理学院 | Casting high speed steel cutter and preparation method thereof |
| JP2010174319A (en) * | 2009-01-29 | 2010-08-12 | Daido Steel Co Ltd | Steel for plastic molding mold, and plastic molding mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0555585B2 (en) | 1993-08-17 |
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