JPH04111963A - Production of die steel for plastic working - Google Patents
Production of die steel for plastic workingInfo
- Publication number
- JPH04111963A JPH04111963A JP2228200A JP22820090A JPH04111963A JP H04111963 A JPH04111963 A JP H04111963A JP 2228200 A JP2228200 A JP 2228200A JP 22820090 A JP22820090 A JP 22820090A JP H04111963 A JPH04111963 A JP H04111963A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- ingot
- plastic working
- die steel
- less
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000007670 refining Methods 0.000 claims abstract description 11
- 229910001315 Tool steel Inorganic materials 0.000 claims abstract description 5
- 238000009749 continuous casting Methods 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910052720 vanadium Inorganic materials 0.000 claims abstract 2
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000003749 cleanliness Effects 0.000 abstract description 8
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000006698 induction Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000000376 effect on fatigue Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、塑性加工用金型鋼の製造方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method of manufacturing mold steel for plastic working.
エレクトロスラグ溶解（以下、ＥＳＲという）法は、組
織が緻密て偏析が少なく、介在物の少ない清浄な鋼が得
られるという利点があるため、従来、塑性加工用金型鋼
の製造には、しばしばＥＳＲ法を利用することか行われ
ている。その場合、ＥＳＲ用電極として、素材鋼塊を誘
導炉溶解法により溶解し、造塊したものか使用されてい
る。The electroslag melting (hereinafter referred to as ESR) method has the advantage of producing clean steel with a dense structure, less segregation, and fewer inclusions. The law is being used. In this case, the ESR electrode is made by melting a raw steel ingot using an induction furnace melting method to form an ingot.
ところが、従来の方法、即ち、誘導炉溶解法（ＩＦ）に
より溶解し、造塊した後、ＥＳＲ法によって高速度工具
鋼を製造する場合、得られた塑性加工用金型鋼に含有さ
れるＳの量をある一定の値よりも低くすることができな
かった。したかって、より一層低いＳ含有量のＥＳＲ用
電極を用いて清浄度の高い塑性加工用金型鋼を製造する
ことが要求されている。However, when producing high-speed tool steel by the ESR method after melting and ingot formation by the conventional method, that is, induction furnace melting (IF), the S content in the obtained mold steel for plastic working is reduced. The amount could not be lowered below a certain value. Therefore, there is a demand for producing mold steel for plastic working with high cleanliness using an ESR electrode with an even lower S content.
本発明は、上記のような実状に鑑みてなされたものであ
る。The present invention has been made in view of the above circumstances.
本発明の目的は、ＥＳＲ法を利用して、優れた清浄度を
有し、耐衝撃特性等の機械的強度において優れた塑性加
工用金型鋼を製造する方法を提供することにある。An object of the present invention is to provide a method for manufacturing mold steel for plastic working that has excellent cleanliness and excellent mechanical strength such as impact resistance properties using the ESR method.
本発明者等は、ＥＳＲ用電極を、取鍋精錬法（ＬＦ）を
利用して製造することにより、上記目的が達成されるこ
とを見出たし、本発明を完成するに至った。The present inventors have discovered that the above object can be achieved by manufacturing an ESR electrode using the ladle refining method (LF), and have completed the present invention.
即ち、本発明の塑性加工用金型鋼の製造方法は、溶鋼を
取鍋精錬する第１工程と、精錬した溶鋼を連続鋳造法又
はインゴット造塊法によってポール状の鋼塊を得る第２
工程と、該鋼塊をエレクトロスラグ溶解法によって精錬
する第３工程からなり、重量で、（１） Ｃ： ０．４
〜２５％、Ｓ ｉ ： ２．０％以下、Ｍｎ＋２．０％
以下、Ｃｒ ： ３．０−８．０％、２０１０５％以下
、Ｓ ： ０．００２％以下、２Ｍｏ＋Ｗ・５〜２５％
、Ｖ ： Ｏ，１，０−５，０％、および残部Ｆｅより
なる鋳塊、（２）上記の残部Ｆｅの一部が、Ｃ０１０，
１〜１５％で置換されてなる鋳塊、（３）上記残部Ｆｅ
の一部が、Ｎ ｂ ： Ｏ，０Ｌ−０，２０％、Ｚ ｒ
： ０．０１〜０２０％、ＲＥ Ｍ ： ０．０１〜
０．２０％およびＣａ：０．０００５〜０．０５％より
選択された１種以上で置換されてなる鋳塊、および（４
）上記残部Ｆｅの一部が、Ｃｏ ： ０．１〜１５％と
、Ｎ ｂ ： ０．０１〜０．２０％、Ｚｒ００旧−０
，２０％、ＲＥ Ｍ ： ０．０１〜０．２０％および
Ｃａ：０．０００５〜００５％より選択された１種以上
とで置換されてなる鋳塊を得ることを特徴とする。That is, the method for producing mold steel for plastic working of the present invention includes a first step of refining molten steel in a ladle, and a second step of obtaining a pole-shaped steel ingot by continuous casting or ingot ingot forming of the refined molten steel.
step, and a third step of refining the steel ingot by electroslag melting method, by weight: (1) C: 0.4
~25%, Si: 2.0% or less, Mn+2.0%
Below, Cr: 3.0-8.0%, 20105% or less, S: 0.002% or less, 2Mo+W・5-25%
, V: O, 1,0-5,0%, and an ingot consisting of the balance Fe, (2) a part of the above balance Fe is C010,
Ingot substituted with 1 to 15%, (3) the balance above Fe
A part of Nb: O,0L-0,20%, Zr
: 0.01~020%, REM: 0.01~
0.20% and an ingot substituted with one or more selected from Ca: 0.0005 to 0.05%, and (4
) Part of the remaining Fe is Co: 0.1-15%, Nb: 0.01-0.20%, Zr00 old-0
, 20%, REM: 0.01-0.20%, and Ca: 0.0005-005%.
本発明においては、まず、溶鋼を例えば電気炉によって
溶製し、次いで、溶鋼を取鍋精錬容器内に移し、取鍋精
錬を行なう。取鍋精錬は、常法によって実施することが
できる。精錬された溶鋼は、次いで連続鋳造法又はイン
ゴット造塊法によって、ポール状のビレット、ブルーム
或いはインゴット等の鋼塊を得、それ等鋼塊を次の工程
におけるＥＳＲ用電極として使用する。それにより、Ｓ
含有量の低下した清浄度の高い塑性加工用金型鋼を得る
ことができる。In the present invention, molten steel is first melted using, for example, an electric furnace, and then the molten steel is transferred into a ladle refining container to perform ladle refining. Ladle refining can be carried out by conventional methods. The refined molten steel is then subjected to a continuous casting method or an ingot ingot forming method to obtain a steel ingot such as a pole-shaped billet, bloom, or ingot, and the steel ingot is used as an ESR electrode in the next step. As a result, S
It is possible to obtain mold steel for plastic working with a reduced content and high cleanliness.
本発明において、塑性加工用金型鋼の組成範囲を限定し
た理由について説明する。In the present invention, the reason why the composition range of the mold steel for plastic working is limited will be explained.
Ｃ：０４〜２．５％
Ｃは、塑性加工用金型鋼として必要な強度、硬さ及び耐
衝撃特性等を確保するのに有効な元素であって、その様
な効果を得るために０４％以上含有させるのがよい。ま
た、多すぎると靭性および金型鋼としての加工性か低下
するので、上限は２５％にする。C: 04% to 2.5% C is an effective element for ensuring the strength, hardness, impact resistance, etc. necessary for mold steel for plastic working, and in order to obtain such effects, C: 04% to 2.5%. It is preferable to contain more than that. Furthermore, if the amount is too high, the toughness and workability as a mold steel will decrease, so the upper limit is set at 25%.
Ｓ ｉ ： ２．０％以下
Ｓｉは、有効な脱酸剤であり、耐酸化性を向上させるが
、多量に含有されると結晶性を粗大化させ、鋼を脆弱に
するので、２．０％以下に設定する。Si: 2.0% or less Si is an effective deoxidizing agent and improves oxidation resistance, but if it is contained in a large amount, it coarsens the crystallinity and makes the steel brittle. Set below %.
Ｍｎ：２．０％以下
Ｍｎは、脱酸及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
の様な効果を得るために、上記の範囲で含有させる。Mn: 2.0% or less Mn is an element that acts as a deoxidizing and desulfurizing agent, increasing the cleanliness of steel and contributing to improving hardenability. Contain within the range of .
Ｃｒ ： ＬＯ−８，０％
Ｃｒは塑性加工用金型鋼の強度、特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るが、
多量に添加すると加熱時の作業性を阻害するので、上記
の範囲で含有させる。Cr: LO-8.0% Cr is an effective element for increasing the strength of mold steel for plastic working, especially high temperature strength, as well as increasing thermal shock resistance.
If added in a large amount, workability during heating will be inhibited, so it is contained within the above range.
Ｖ ： ０．１０〜５．０％
■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、その様な効果を
得るために、０．１％以上含有させる。しかしながら余
り多くなり過きると、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、上限を
５．０％に設定する。V: 0.10 to 5.0% (2) is an element effective in forming carbides, increasing heat treatment hardness, and improving wear resistance, so in order to obtain such effects, 0. Contain 1% or more. However, if the content is too large, the toughness will decrease and the number of coarse carbides will increase, which will have an adverse effect on fatigue properties, so the upper limit is set at 5.0%.
２００５％以下、Ｓ ： ０．０１０％以下Ｐ及びＳは
、有害な元素であり、鋼の物性を著しく劣化させるので
、少ないのか望ましい。2005% or less, S: 0.010% or less P and S are harmful elements and significantly deteriorate the physical properties of steel, so it is desirable to have a small amount.
２ Ｍ ｏ ＋Ｗ ： ５〜２５％
ＭｏもＷも炭化物を形成し、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、その様な
効果を得るために、上記の範囲に設定する。しかし、２
５％よりも多くなると、靭性が低下して熱間加］二性か
劣化すると共に、粗大炭化物も多くなり、疲労特性に悪
影響を及はす。2 Mo + W: 5 to 25% Both Mo and W are elements that form carbides and are effective in increasing heat treatment hardness and improving wear resistance, so in order to obtain such effects, the above Set to a range of However, 2
If it exceeds 5%, the toughness decreases and hot workability deteriorates, and the amount of coarse carbides increases, which adversely affects fatigue properties.
ｃｏ 、０１〜１５％
Ｃｏは基地を強化して塑性加工用金型鋼の強度、耐衝撃
性、耐ヒートチエツク性を高めるので、上記の範囲で含
有させる。co, 01-15% Co strengthens the base and increases the strength, impact resistance, and heat check resistance of the mold steel for plastic working, so it is contained within the above range.
Ｎｂ：０．Ｏ１〜０．２０％
Ｎｂは結晶粒の粗大化を防止する作用を有し、また酸化
膜を形成し内部への酸化の促進を防止する。その様な効
果を生じさせるために上記の範囲で含有させる。Nb: 0. O1 to 0.20% Nb has the effect of preventing coarsening of crystal grains, and also forms an oxide film to prevent promotion of oxidation inside. In order to produce such an effect, it is contained within the above range.
Ｚ ｒ ： ０．０１〜０．２０％
Ｎｂと同様に結晶粒の微細化をはかる元素でああり、ま
た、耐酸化性を向上する作用を有する。Zr: 0.01 to 0.20% Like Nb, it is an element that refines crystal grains, and also has the effect of improving oxidation resistance.
その様な効果を生じさせるために上記の範囲で含有させ
る。In order to produce such an effect, it is contained within the above range.
ＲＥＭ：０旧〜０２０％
耐酸化性を向上させ、また熱間加工性の向上に寄与する
ので、上記の範囲で含有させる。REM: 0 to 020% Since it improves oxidation resistance and contributes to improving hot workability, it is contained within the above range.
Ｃａ ： ０．０００５−０．０５％
Ｃａは脱酸剤の一種であり、有害なＳを固定する作用を
有するので、上記の範囲で含有させる。Ca: 0.0005-0.05% Ca is a type of deoxidizing agent and has the effect of fixing harmful S, so it is contained within the above range.
以下、本発明を実施例および比較例によって説明する。 The present invention will be explained below with reference to Examples and Comparative Examples.
実施例１〜４
電気炉によって適宜の合金成分を溶製し、得られた溶鋼
を取鍋精錬装置に導入して、アルゴンガスによる撹拌を
行ないながら、還元雰囲気下で精錬を行なった。次いで
、取鍋精練された溶鋼を、インゴット造塊法によって造
塊し、ＥＳＲ用電極を製造した。このＥＳＲ用電極を用
い、ＥＳＲ法によってインゴットを製造した。インゴッ
トの組成を第１表に示す。Examples 1 to 4 Appropriate alloy components were melted in an electric furnace, and the resulting molten steel was introduced into a ladle refining device, where it was refined under a reducing atmosphere while stirring with argon gas. Next, the ladle-refined molten steel was ingot-formed by an ingot agglomeration method to produce an ESR electrode. Using this ESR electrode, an ingot was manufactured by the ESR method. The composition of the ingot is shown in Table 1.
比較例１
実施例１の場合と同一の合金成分を用い、真空誘導炉に
よって溶製した後、造塊してインゴットを得た。その組
成を第１表に示す。Comparative Example 1 Using the same alloy components as in Example 1, an ingot was obtained by melting in a vacuum induction furnace and then forming an ingot. Its composition is shown in Table 1.
比較例２
実施例１の場合と同一の合金成分を用い、真空誘導炉に
よって溶製した後、造塊してインゴットを得た。このイ
ンゴットをＥＳＲ用電極として使用し、ＥＳＲ法によっ
てインゴットを製造した。Comparative Example 2 Using the same alloy components as in Example 1, an ingot was obtained by melting in a vacuum induction furnace and forming an ingot. This ingot was used as an electrode for ESR, and an ingot was manufactured by the ESR method.
その組成を第１表に示す。Its composition is shown in Table 1.
比較例３
電気炉によって実施例１の場合と同一の合金成分を溶製
し、得られた溶鋼を取鍋精錬装置に導入して、アルゴン
ガスによる撹拌を行ないなから、還元雰囲気下で精錬を
行なった。次いて、取鍋精練された溶鋼を、インゴット
造塊法によって造塊した。得られたインゴットの組成を
第１表に示す。Comparative Example 3 The same alloy components as in Example 1 were melted in an electric furnace, the resulting molten steel was introduced into a ladle refining device, and the molten steel was refined in a reducing atmosphere without stirring with argon gas. I did it. Next, the ladle-refined molten steel was ingot-formed by an ingot agglomeration method. The composition of the obtained ingot is shown in Table 1.
比較例４〜６
実施例２〜４の場合と同一の合金成分を用い、真空誘導
炉によって溶製した後、造塊してインゴットを得た。こ
のインゴットをＥＳＲ用電極として使用し、ＥＳＲ法に
よってインゴットを製造した。その組成を第１表に示す
。Comparative Examples 4 to 6 Using the same alloy components as in Examples 2 to 4, the alloys were melted in a vacuum induction furnace and then formed into ingots to obtain ingots. This ingot was used as an electrode for ESR, and an ingot was manufactured by the ESR method. Its composition is shown in Table 1.
以下余白
実施例および比較例における各インゴットをｌ】５０°
Ｃで鍛造し、常法により焼きなましを施して素材を製造
し、これに焼き入れ、焼戻しを順次施して、２０ｍｍφ
×１００師長の供試料を得た。Each ingot in the margin examples and comparative examples is shown below at 50°.
A material is produced by forging with C and annealing using a conventional method.The material is then quenched and tempered sequentially to form a 20mmφ
A sample of ×100 masters was obtained.
これ等の供試料について、金型耐久テストを行なった。A mold durability test was conducted on these specimens.
すなわち、上記各供試料を用い、被鍛造祠８４５Ｃの厚
さ２．０師の鋼板を、鍛造スピード１５０回／分の条件
で打ち抜きテストを行なった。That is, using each of the test samples described above, a punching test was conducted on a steel plate having a thickness of 2.0 mm and having a forging hole 845C at a forging speed of 150 times/min.
その試験結果を第２表に示す。また、硬さおよび清浄度
についても第２表に示す。なお、清浄度はＪＩＳ規格に
よって測定されたもので、Ａは硫化物等の伸長状態の介
在物、Ｂは微細粒状介在物、Ｃは粒状介在物を意味する
。The test results are shown in Table 2. Table 2 also shows the hardness and cleanliness. Note that the cleanliness was measured according to JIS standards, where A means inclusions in an elongated state such as sulfides, B means fine granular inclusions, and C means granular inclusions.
以下余白 １ ］ ］ ２ 第 表 である。Margin below 1] ] 2 No. table It is.
Claims (4)
連続鋳造法又はインゴット造塊法によってポール状の鋼
塊を得る第２工程と、該鋼塊をエレクトロスラグ溶解法
によって精錬する第３工程からなり、重量で、Ｃ：０．
４〜２．５％、Ｓｉ：２．０％以下、Ｍｎ：２．０％以
下、Ｃｒ：３．０〜８．０％、Ｐ：０．０５％以下、Ｓ
：０．００２％以下、２Ｍｏ＋Ｗ：５〜２５％、Ｖ：０
．１０〜５．０％、および残部Ｆｅよりなる鋳塊を得る
ことを特徴とする塑性加工用金型鋼の製造方法。(1) A first step of refining molten steel in a ladle, a second step of obtaining a pole-shaped steel ingot from the refined molten steel by continuous casting or ingot making, and refining the steel ingot by electroslag melting. Consisting of the third step, C: 0.
4 to 2.5%, Si: 2.0% or less, Mn: 2.0% or less, Cr: 3.0 to 8.0%, P: 0.05% or less, S
: 0.002% or less, 2Mo+W: 5-25%, V: 0
．． 1. A method for producing mold steel for plastic working, the method comprising obtaining an ingot consisting of Fe in an amount of 10 to 5.0%, and the balance being Fe.
造方法において、残部Ｆｅの一部が、Ｃｏ：０．１〜１
５％で置換されてなることを特徴とする塑性加工用金型
鋼の製造方法。(2) In the method for manufacturing high-speed tool steel according to claim 1, a part of the remaining Fe is Co: 0.1 to 1
A method for producing mold steel for plastic working, characterized in that the steel is substituted with 5%.
造方法において、残部Ｆｅの一部が、Ｎｂ：０．０１〜
０．２０％、Ｚｒ：０．０１〜０．２０％、ＲＥＭ：０
．０１〜０．２０％およびＣａ：０．０００５〜０．０
５％より選択された１種以上で置換されてなることを特
徴とする塑性加工用金型鋼の製造方法。(3) In the method for manufacturing high-speed tool steel according to claim 1, a portion of the remaining Fe is Nb: 0.01 to
0.20%, Zr: 0.01-0.20%, REM: 0
．． 01-0.20% and Ca: 0.0005-0.0
A method for producing mold steel for plastic working, characterized in that the steel is substituted with one or more selected from 5%.
造方法において、残部Ｆｅの一部が、Ｃｏ：０．１〜１
５％と、Ｎｂ：０．０１〜０．２０％、Ｚｒ：０．０１
〜０．２０％、ＲＥＭ：０．０１〜０．２０％およびＣ
ａ：０．０００５〜０．０５％より選択された１種以上
とで置換されてなることを特徴とする塑性加工用金型鋼
の製造方法。(4) In the method for manufacturing high-speed tool steel according to claim 1, a part of the remaining Fe is Co: 0.1 to 1
5%, Nb: 0.01-0.20%, Zr: 0.01
~0.20%, REM: 0.01-0.20% and C
A: A method for producing mold steel for plastic working, characterized in that it is replaced with one or more selected from 0.0005 to 0.05%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2228200A JPH04111963A (en) | 1990-08-31 | 1990-08-31 | Production of die steel for plastic working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2228200A JPH04111963A (en) | 1990-08-31 | 1990-08-31 | Production of die steel for plastic working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04111963A true JPH04111963A (en) | 1992-04-13 |
Family
ID=16872770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2228200A Pending JPH04111963A (en) | 1990-08-31 | 1990-08-31 | Production of die steel for plastic working |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04111963A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7754032B2 (en) | 2003-04-09 | 2010-07-13 | Hitachi Metals, Ltd. | Method for manufacturing a high speed tool steel |
| CN110055475A (en) * | 2019-04-28 | 2019-07-26 | 江苏羽立新材料科技有限公司 | A kind of roll low-phosphorous sulphur rare-earth alloy material and preparation method thereof |
| CN111534662A (en) * | 2020-06-12 | 2020-08-14 | 河北鑫泰轴承锻造有限公司 | DHRE round steel production process |
| CN115896634A (en) * | 2022-12-19 | 2023-04-04 | 湖北志联模具科技有限公司 | High-temperature-resistant non-ferrous metal die-casting forming die steel material and preparation method thereof |
-
1990
- 1990-08-31 JP JP2228200A patent/JPH04111963A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7754032B2 (en) | 2003-04-09 | 2010-07-13 | Hitachi Metals, Ltd. | Method for manufacturing a high speed tool steel |
| CN110055475A (en) * | 2019-04-28 | 2019-07-26 | 江苏羽立新材料科技有限公司 | A kind of roll low-phosphorous sulphur rare-earth alloy material and preparation method thereof |
| CN111534662A (en) * | 2020-06-12 | 2020-08-14 | 河北鑫泰轴承锻造有限公司 | DHRE round steel production process |
| CN115896634A (en) * | 2022-12-19 | 2023-04-04 | 湖北志联模具科技有限公司 | High-temperature-resistant non-ferrous metal die-casting forming die steel material and preparation method thereof |
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