JPS61166954A - High-toughness wear-resistant steel - Google Patents
High-toughness wear-resistant steelInfo
- Publication number
- JPS61166954A JPS61166954A JP679585A JP679585A JPS61166954A JP S61166954 A JPS61166954 A JP S61166954A JP 679585 A JP679585 A JP 679585A JP 679585 A JP679585 A JP 679585A JP S61166954 A JPS61166954 A JP S61166954A
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- Prior art keywords
- toughness
- steel
- present
- strength
- resistant steel
- 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.)
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Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、高靭性耐摩耗鋼、特に靭性を改善した高靭性
耐摩耗鋼に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a high-toughness wear-resistant steel, and particularly to a high-toughness wear-resistant steel with improved toughness.
（従来の技術）
高靭性耐摩耗鋼は、通常焼入れ焼戻しにより所望の強度
と靭性に関質し、或いは必要に応じ表面硬化し、耐摩耗
性を向上させ、例えばブルドーザをはじめとする建設機
械の腹帯、粉砕機の反撥板あるいはボールミルの裏板、
さらには歯車、リンク棒等の用途に使用される材料であ
る。(Prior Art) High-toughness wear-resistant steel is usually quenched and tempered to achieve the desired strength and toughness, or if necessary, surface hardened to improve wear resistance, and is used, for example, in construction machinery such as bulldozers. Belly band, repulsion plate of a crusher or back plate of a ball mill,
Furthermore, it is a material used for gears, link rods, etc.
特に近年、上述のような用途に使われる機械要素は軽量
小型化あるいは大荷重化を自衛した設計が行われるよう
になり、それに伴い従来に比べ非常に苛酷な条件下で使
用されるようになってきている。特に履帯、歯車のよう
に高度の耐摩耗性と耐疲労強度を要求される用途には従
来材ではそれらを実現するに必要な程度の硬度と靭性と
両方の特性を満足させることができない。Particularly in recent years, mechanical elements used in the above-mentioned applications have been designed to be lighter and smaller or to carry larger loads, and as a result, they have come to be used under much harsher conditions than before. It's coming. In particular, for applications such as tracks and gears that require a high degree of wear resistance and fatigue resistance, conventional materials cannot satisfy both the hardness and toughness required to achieve these requirements.
かかる用途に使用される従来例としては、ＪＩＳ ＳＮ
ＣＭ４３１１（がある。これは、鋼組成が次のものであ
る：Ｃ： ０．２７〜０．３５％、 Ｓｉ ： ０．
１５〜０．３５％、Ｍｎ ： ０．６０〜０．９０％、
Ｐ、Ｓ ： ０．０３０％以下、Ｎｉ ： １．６
０〜２．０％、 Ｃｒ ： ０．６０〜１．０％、Ｍ
ｏ ： ０．１５〜０．３０％、 残部：Ｆｅこのほか
強靭耐摩耗性鋼としては特開昭５１−４３３１１号に開
示されたものがあるが、これは鋳鋼であり、Ｓｉ ：
０．７０＝１．２％である。＆Ｉ鋼であるためにはＳｉ
はある程度の量だけ確保する必要がある。As a conventional example used for such purposes, JIS SN
There is CM4311, which has the following steel composition: C: 0.27-0.35%, Si: 0.
15-0.35%, Mn: 0.60-0.90%,
P, S: 0.030% or less, Ni: 1.6
0-2.0%, Cr: 0.60-1.0%, M
o: 0.15-0.30%, balance: Fe In addition, there is a strong and wear-resistant steel disclosed in JP-A-51-43311, which is cast steel, and Si:
0.70=1.2%. &I steel requires Si
It is necessary to secure only a certain amount.
（発明が解決すべき問題点）
しかしながら、かかる従来例にあっては、今日没計上要
求されているレベルと比べて強度、靭性が十分でない。(Problems to be Solved by the Invention) However, such conventional examples do not have sufficient strength and toughness compared to the level required today.
すなわち、上述のＪＩＳ ＳＮ（’Ｍ４３１Ｈでは炭素
量がやや少なく硬度および強度の確保は十分でなく、ま
た焼入性確保のためニッケルを比較的多量に加えている
ため高価な材料となっている。また上記の特開昭５１−
４３３１１号開示の場合Ｓｉの高いｖｆ鋼であるため靭
性には自ずから限度があり、さらに表面硬化には不通な
成分系となっている。That is, the above-mentioned JIS SN ('M431H) has a rather small amount of carbon, which does not ensure sufficient hardness and strength, and also adds a relatively large amount of nickel to ensure hardenability, making it an expensive material. Also, the above-mentioned JP-A-51-
In the case disclosed in No. 43311, since it is a VF steel with a high Si content, its toughness is naturally limited, and furthermore, the composition system is impervious to surface hardening.
よって、本発明の目的とするところは、ブルドーザをは
じめとする各種の建設機械あるいは各種の増減速機等の
構造部材あるいは部品用として用いられ得る、強度、靭
性がともにすぐれた比較的安価な高靭性耐摩耗鋼を提供
することである。Therefore, it is an object of the present invention to develop a relatively inexpensive high-speed construction with excellent strength and toughness that can be used as structural members or parts for various construction machines such as bulldozers or various speed reducers. The objective is to provide tough and wear-resistant steel.
ここに、本発明者らは従来材の強度および硬度レベルと
同等もしくはそれ以上で、従来鋼では得られなかった程
のすぐれた靭性を有する高靭性耐摩耗鋼を見出し、本発
明を完成した。Here, the present inventors have discovered a high toughness wear-resistant steel that has strength and hardness levels equal to or higher than those of conventional materials, and has superior toughness that could not be obtained with conventional steels, and has completed the present invention.
（問題点を解決する手段）
すなわち、本発明者らの知見によれば、従来鋼と比較し
て、Ｃを増量して強度および硬度の確保をはかるととも
に、Ｐ、Ｓを上限を厳しく制限すること、 で疲労強度
の改善および粒界強度の改善をはかり、同時にＢを積極
的に添加す・ることで焼入性の確保を図り、さらにＮｉ
添加に代えてＮｂ、 Ｔｉを添加することで粒界強度の
改善、および靭性の確保を図ることにより、それらの相
乗的作用効果によって、強度および硬度をはじめ、靭性
が従来鋼からは予想できなかった程に改善されるのであ
る。特に、Ｂ、Ａ（２ならびにＮｂおよび／またはＴｉ
添加の相乗的作用効果として、高強度、高靭性の比較的
安価な高靭性耐摩耗鋼が得□られるのである。(Means for solving the problem) That is, according to the findings of the present inventors, compared to conventional steel, the amount of C is increased to ensure strength and hardness, and the upper limits of P and S are strictly limited. In order to improve fatigue strength and grain boundary strength, at the same time, B was actively added to ensure hardenability, and Ni
By adding Nb and Ti instead of additives to improve grain boundary strength and ensure toughness, their synergistic effects will improve strength, hardness, and toughness that could not be expected from conventional steel. It will be improved accordingly. In particular, B, A(2 and Nb and/or Ti
As a synergistic effect of the addition, a relatively inexpensive high-strength, high-toughness, wear-resistant steel can be obtained.
ここに、本発明の要旨とするところは、重量％で、
Ｃ： ０．３０〜０．４５％、 Ｓｉ ： ０．１０〜
０．５０％、Ｍｎ ： ０．３０〜１．２０％、 Ｐ：
０．０１０％以下、Ｓ ： ０．０１０％以下、 Ｃｒ
： ０．５０〜１．４０％、Ｍｏ＝０．１５〜０．５
５％、 Ｂ ： ０．０００５〜０−．００５０％、Ｓ
ｏｌ．Ａｌ： ０．０１５ ＝、 ０．０６０％、さら
に、Ｎｂ ： ｏ、ｏ２〜０．０５％および／またはＴ
ド０．０１〜０．０３％、
残部実質的にＦｅよりなる高靭性耐摩耗鋼である。Here, the gist of the present invention is, in weight%, C: 0.30-0.45%, Si: 0.10-0.10%.
0.50%, Mn: 0.30-1.20%, P:
0.010% or less, S: 0.010% or less, Cr
: 0.50~1.40%, Mo=0.15~0.5
5%, B: 0.0005-0-. 0050%, S
ol. Al: 0.015 =, 0.060%, further Nb: o, o2 ~ 0.05% and/or T
It is a high-toughness, wear-resistant steel consisting of 0.01 to 0.03% Fe, and the remainder substantially Fe.
（作用）
次に、各々の元素の数値を限定した理由を詳述する。な
お、本明細書において特にことわりのない限り「％」は
「重量％」である。(Function) Next, the reason for limiting the numerical values of each element will be explained in detail. In this specification, "%" means "% by weight" unless otherwise specified.
Ｃ（炭素）二〇は硬度を決める最も基本的な元素であり
ＳＮＣＭ４３１材の硬度レベルを満足するため下限値は
０．３０％とする。一方、上限値は高周波焼入れ時の焼
き割れの発生が生じない限界値である０、４５％とする
。好ましくは０．３５％（超）ないし０．４５％である
。C (carbon) 20 is the most basic element that determines hardness, and in order to satisfy the hardness level of SNCM431 material, the lower limit value is set to 0.30%. On the other hand, the upper limit is set to 0.45%, which is the limit value at which no quench cracking occurs during induction hardening. Preferably it is 0.35% (more than) to 0.45%.
Ｓｉ （ケイ素）；Ｓｉは脱酸および焼入れ性に効果が
ある。０．１０％未満ではその効果が十分に期待されな
い。しかしＳｉは粒界および母相の靭性という点からは
多量に含有することは好ましくなく上限を０゜５０％と
する。好ましくは０．１５〜０．３０％である。Si (silicon); Si is effective in deoxidizing and hardenability. If it is less than 0.10%, the effect is not expected to be sufficient. However, from the viewpoint of grain boundary and matrix toughness, it is not preferable to contain a large amount of Si, and the upper limit is set at 0.50%. Preferably it is 0.15 to 0.30%.
Ｍｎ （マンガン）：Ｍｎは脱酸、税硫、焼入性に効果
があるが、０．３０％未満ではその効果が十分でな（、
一方、１．２０％超では非金属介在物残留の恐れがあり
、したがって、本発明にあって、ｉｎ含有量は０．３０
〜１．２０％とする。Mn (manganese): Mn is effective in deoxidizing, sulfurizing, and hardenability, but if it is less than 0.30%, the effect is not sufficient (,
On the other hand, if it exceeds 1.20%, there is a risk that nonmetallic inclusions may remain.
~1.20%.
Ｃｒ （クロム）：Ｃｒも従来鋼におけるＮｉと同様に
焼入性改善の効果を有する。しかし、Ｃｒは０．５０％
未満ではその効果が十分でなく、また経済性と効果の点
から１．４０％を上限とする。Cr (Chromium): Cr also has the effect of improving hardenability like Ni in conventional steel. However, Cr is 0.50%
If it is less than 1.40%, the effect will not be sufficient, and from the viewpoint of economy and effectiveness, the upper limit is set at 1.40%.
ｐ、 ｓ ＜リン、硫黄）；Ｐ、Ｓはいずれも有害な不
純物元素であり、特に粒界強度を改善するために低く抑
えることが望ましい。このため本発明にあっては、上限
をいずれも０．０１０％とする。p, s < phosphorus, sulfur); P and S are both harmful impurity elements, and it is desirable to keep them low in order to particularly improve grain boundary strength. Therefore, in the present invention, the upper limit is set to 0.010% in both cases.
Ｍｏ （モリブデン）二Ｍｏは焼入性、靭性改善に効果
がある。特に粒界強化元素してそのすぐれた効果が期待
できるが、０．１５％未満ではその効果が顕著でなく、
一方、経済性と効果の点から０．５５％を上限とする。Mo (molybdenum) diMo is effective in improving hardenability and toughness. In particular, it can be expected to have an excellent effect as a grain boundary strengthening element, but if it is less than 0.15%, the effect is not noticeable.
On the other hand, from the point of view of economy and effectiveness, the upper limit is set at 0.55%.
Ｂ（ホウ素）二Ｂは焼入性改善に効果を有するが、０．
０００５％未満ではその効果が期待できず、過剰の添加
は靭性低下を招くので、上限を０．００５０％とする。B (boron) diB is effective in improving hardenability, but 0.
If the content is less than 0.0005%, the effect cannot be expected, and excessive addition causes a decrease in toughness, so the upper limit is set to 0.0050%.
特に本発明の場合、Ｓｏｌ．Ａｌ ： ０．０１５〜０
．０６０％、Ｔｉ ： ０．０１〜０．０３％および／
またはＮｂ ： ０．０２〜０．０５％が含有されるた
めＢ添加による焼入性改善は顕著である。Particularly in the case of the present invention, Sol. Al: 0.015~0
．． 060%, Ti: 0.01-0.03% and/
Or Nb: Since 0.02 to 0.05% is contained, the hardenability improvement due to the addition of B is remarkable.
Ｓｏｌ．Ａｌ （フルミニラム）：ＡＱはａ酸および結
晶粒微細化に効果を有し０．０１５％未満では効果が十
分でなく、一方、０．０６０％を超えると非金属介在物
が過剰に残留するおそれがあるので、本発明にあっては
ＡＱ含有量は０、．０１５〜０．０６０％とする。Sol. Al (fluminiram): AQ is effective in a acid and crystal grain refinement, and if it is less than 0.015%, the effect is not sufficient, while if it exceeds 0.060%, nonmetallic inclusions may remain excessively. Therefore, in the present invention, the AQ content is 0, . 015% to 0.060%.
Ｔｉ、 Ｎｂ （チタン、ニオブ）：Ｔｉおよび／また
はＮｂは結晶粒の微細化に効果があり粒界強化にも効果
があるので、本発明においてそれらは１種または２種を
添加する。Ｎｂについては０．０２％未満、Ｔｉについ
ては０．０１％未満ではそれぞれ効果がなく、一方、そ
れぞれ０．０５％超、０．０３％超では靭性低下を招く
ので、Ｎｂ ： ０．０２〜０．０５％およびＴｉ ：
０．０１〜０．０３％とする。Ｔｉ、 Ｎｂは少なく
とも１種添加すれば良いが、好ましくは２種添加する。Ti, Nb (titanium, niobium): Since Ti and/or Nb are effective in refining crystal grains and are also effective in strengthening grain boundaries, one or two of them are added in the present invention. Less than 0.02% for Nb and less than 0.01% for Ti have no effect, while more than 0.05% and 0.03%, respectively, cause a decrease in toughness, so Nb: 0.02~ 0.05% and Ti:
The content should be 0.01 to 0.03%. At least one type of Ti and Nb may be added, but preferably two types are added.
次に、本発明をその実施例によってさらに具体的に説明
するが、それらは単に本発明の例示であって、それによ
って特に本発明が制限されるものではない。Next, the present invention will be explained in more detail with reference to Examples, but these are merely illustrative of the present invention and do not particularly limit the present invention.
犬丘拠ユ
第１表に示す組成を有する三種の供試鋼を通常の方法で
調製して供試材とした。各供試材からの試験片を調質後
、高周波焼入れした。高周波焼入れ条件は次の通りであ
った：
周波数： ３にＣ
電力 ： 約１５ Ｋ轄
加熱時間４２００ ｓｅｃ
定地式
１．１％ソリュプル溶液焼入れ
１８０°（ｘ５ｈｒ 境戻し
このようにして得られた各試験片の硬度分布ならびに素
地部および高周波焼入れ部についての疲労強度および破
壊靭性値を調べた。結果を第１図ないし第５図にグラフ
にまとめて示す。Three types of test steel having the compositions shown in Table 1 were prepared by a conventional method and used as test materials. After tempering, a test piece from each sample material was induction hardened. The induction hardening conditions were as follows: Frequency: 3℃ Power: Approximately 15K heating time 4200 sec Stationary 1.1% solupulus solution quenching 180° (x5hr) Each of the thus obtained The hardness distribution of the test piece, as well as the fatigue strength and fracture toughness values of the base part and the induction hardened part were investigated.The results are summarized in graphs in Figures 1 to 5.
図中、白丸「○」は本発明６ｍｌ １ 、黒丸「・」は
本発明鋼２、そして白抜き四角「口」は従来鋼について
の試験データを示すものである。また、第２図および第
３図のそれぞれ回転曲げ疲労試験結果および破壊靭性試
験結果を示すデータは素地部の性質であって、一方、第
４図および第５図の衝撃疲労試験結果および破壊靭性試
験結果をそれぞれ示すデータは高周波焼入部の性質であ
る。なお、各試験の仕様はＪＴＳ規格に準じたものであ
った。In the figure, the open circle "○" indicates the test data for the present invention 6ml 1, the black circle "." indicates the present invention steel 2, and the open square "opening" indicates the test data for the conventional steel. Furthermore, the data showing the results of the rotating bending fatigue test and the fracture toughness test in FIGS. The data showing each test result is the property of the induction hardened part. Note that the specifications of each test were in accordance with the JTS standard.
゛ ：
まず、第１図に示す硬度分布の結果からも分かるように
、表面硬度は本発明鋼１および２がいずれも１１ＲＣ＝
５５と従来鋼のＨＲＣ＝ ５０に比べ約ｌθ％高くなっ
ていることがわかる。焼入れ深さもＮｉを添加せずとも
かなり改善されるのが分かる。゛: First, as can be seen from the hardness distribution results shown in Figure 1, the surface hardness of both Invention Steels 1 and 2 is 11RC=
55, which is about lθ% higher than the conventional steel HRC=50. It can be seen that the hardening depth is also significantly improved without adding Ni.
次に第２図および第３図からは、素地部の疲労強度は従
来鋼に比べ本発明によればいずれの応力レベルでも改善
されていること、また本発明鋼は硬度が高くなっている
のにも拘らず破壊靭性値が改善されていることがわかる
。この点、通常は硬度を上げると破壊靭性値は低下する
のであり、予想外の効果といわねばならない。Next, Figures 2 and 3 show that the fatigue strength of the base part is improved at all stress levels according to the present invention compared to conventional steel, and that the hardness of the steel of the present invention is higher. Despite this, it can be seen that the fracture toughness value is improved. In this respect, the fracture toughness value usually decreases when the hardness is increased, so this is an unexpected effect.
さらに、第４図より高周波焼入れ部の疲労強度も本発明
鋼は従来鋼に比べ改善されていることがわかる。破壊確
率５０％で比較すると本発明５Ｉ１１は約６０％、本発
明２は約４０％各々寿命が長くなっている。一方、同じ
く高周波焼入れ部の破壊靭性値を示す第５図のデータよ
り、本発明鋼の破壊靭性値は硬度が高くなっているにも
拘らず従来鋼と同じレベルをＩＩ４吊していることがわ
かる。これは同じ硬度で比較すれば本発明鋼の靭性値が
高いこ上を意味している。Furthermore, it can be seen from FIG. 4 that the fatigue strength of the induction hardened portion of the steel of the present invention is improved compared to the conventional steel. When compared with a failure probability of 50%, the life of the present invention 5I11 is approximately 60% longer, and the life of the present invention 2 is approximately 40% longer. On the other hand, from the data in Figure 5, which also shows the fracture toughness value of the induction hardened part, it is found that the fracture toughness value of the steel of the present invention is at the same level as the conventional steel, despite its higher hardness. Recognize. This means that the steel of the present invention has a higher toughness value when compared with the same hardness.
１鳳凱１
本例では実施例１で使用したと同じ供試材を使い、同様
の高周波焼入れ処理終了後、実際の使用条件に模したシ
ュミレーション試験により上述の効果を確認した。この
ときのシュミレーション試験はブルドーザの履帯を例と
して、ベッド上に固定して並べた試験片上に荷重Ｗをか
けながら車輪を押し付け、一方、上記ベッドを横方向に
揺動させ、試験片表面に剥離の生じるまでの回数を調べ
た。かかる実際の条件に模したシュミレーション試験機
による剥離発生試験の結果を第２表に示す。これより従
来鋼はいずれも剥離が１７４０００回で剥離が発生した
のに対し、本発明鋼は２４００００回以上繰り返したが
剥離は発生していない。1 Hokai 1 In this example, the same test material as used in Example 1 was used, and after completion of the same induction hardening treatment, the above-mentioned effects were confirmed by a simulation test simulating actual usage conditions. In this simulation test, using the tracks of a bulldozer as an example, the wheels were pressed while applying a load W on the test pieces fixed on the bed, and on the other hand, the bed was swung laterally, causing peeling on the surface of the test pieces. We investigated the number of times it takes to occur. Table 2 shows the results of a peeling test using a simulation tester simulating the actual conditions. From this, it can be seen that in all conventional steels, peeling occurred after 174,000 cycles, whereas in the steel of the present invention, peeling did not occur even after 240,000 cycles or more.
ンユミレーション条件ニ
ラシアル荷重（Ｗ） ： ６０ トンスラスト荷
重 二 〇 トン
面圧 ： ２６０ｋｇ／ ｍｉ％下転輪
直径 ： ３００ｍｍ
ベッド揺動スピード（Ｆ ） ： １３５ ＋ｕ＋／
ｓｅｃ第２表Universal load (W): 60 tons Thrust load: 20 tons Surface pressure: 260 kg/mi% Lower roller diameter: 300 mm Bed swing speed (F): 135 +u+/
sec table 2
第１図ないし第５図は本発明における実施例の各実験結
果をそれぞれまとめて示すグラフである。
出願人 住友金属工業株式会社
株式会社 小松製作所
代理人 弁理士 広 瀬 童 −（他１名）氏１図
本２図
ＭＬ′ｆＬＬ／教、（回）
本３閏
もｌ凹
ｔｅｖ壜免舌し廖に（画）
尾５図
イ？芝で （ＨＲ，ＣンFIGS. 1 to 5 are graphs collectively showing the experimental results of Examples of the present invention. Applicant Sumitomo Metal Industries, Ltd. Komatsu Ltd. Agent Patent Attorney Hirose Do - (1 other person) 1 figure book 2 figures ML'fLL/Kyo, (times) Book 3 Leap also l dented tev bottle tongue. Liaoni (painting) Tail 5 Figure Yi? On the grass (HR,Cn)
Claims (1)
％、Ｍｎ：０．３０〜１．２０％、Ｐ：０．０１０％以
下、Ｓ：０．０１０％以下、Ｃｒ：０．５０〜１．４０
％、Ｍｏ：０．１５〜０．５５％、Ｂ：０．０００５〜
０．００５０％、Ｓｏｌ．Ａｌ：０．０１５〜０．０６
０％、さらに、Ｎｂ：０．０２〜０．０５％および／ま
たはＴｉ：０．０１〜０．０３％、 残部実質的にＦｅよりなる高靭性耐摩耗鋼。[Claims] In weight%, C: 0.30 to 0.45%, Si: 0.10 to 0.50
%, Mn: 0.30-1.20%, P: 0.010% or less, S: 0.010% or less, Cr: 0.50-1.40
%, Mo: 0.15-0.55%, B: 0.0005-
0.0050%, Sol. Al: 0.015-0.06
0%, furthermore, Nb: 0.02 to 0.05% and/or Ti: 0.01 to 0.03%, and the balance substantially consists of Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP679585A JPS61166954A (en) | 1985-01-18 | 1985-01-18 | High-toughness wear-resistant steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP679585A JPS61166954A (en) | 1985-01-18 | 1985-01-18 | High-toughness wear-resistant steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61166954A true JPS61166954A (en) | 1986-07-28 |
| JPH0371499B2 JPH0371499B2 (en) | 1991-11-13 |
Family
ID=11648104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP679585A Granted JPS61166954A (en) | 1985-01-18 | 1985-01-18 | High-toughness wear-resistant steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61166954A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6439351A (en) * | 1987-08-04 | 1989-02-09 | Sumitomo Metal Ind | High strength and high toughness case hardening steel for ball cage |
| JPH01172550A (en) * | 1987-12-25 | 1989-07-07 | Nippon Steel Corp | Wear-resistant steel excellent in heat check resistance and having high hardness and high toughness |
| CN103667924A (en) * | 2013-11-22 | 2014-03-26 | 首钢水城钢铁（集团）有限责任公司 | 40Cr hot-rolled wire rod production method |
| WO2014045552A1 (en) | 2012-09-19 | 2014-03-27 | Ｊｆｅスチール株式会社 | Wear-resistant steel plate having excellent low-temperature toughness and corrosion wear resistance |
| WO2014045553A1 (en) | 2012-09-19 | 2014-03-27 | Ｊｆｅスチール株式会社 | Wear-resistant steel plate having excellent low-temperature toughness and corrosion wear resistance |
| WO2015115086A1 (en) | 2014-01-28 | 2015-08-06 | Ｊｆｅスチール株式会社 | Wear-resistant steel plate and process for producing same |
| JP2016094644A (en) * | 2014-11-14 | 2016-05-26 | 株式会社小松製作所 | Steel for chisel and chisel |
| WO2018117481A1 (en) | 2016-12-22 | 2018-06-28 | 주식회사 포스코 | High-hardness wear-resistant steel and method for manufacturing same |
| CN109112398A (en) * | 2018-08-29 | 2019-01-01 | 承德建龙特殊钢有限公司 | A kind of chrome-bearing alloy bar and preparation method thereof |
| WO2019125083A1 (en) | 2017-12-22 | 2019-06-27 | 주식회사 포스코 | Wear-resistant steel having excellent hardness and impact toughness, and method for producing same |
| WO2019125076A1 (en) | 2017-12-22 | 2019-06-27 | 주식회사 포스코 | Wear-resistant steel having excellent hardness and impact toughness, and method for producing same |
| KR20190077916A (en) | 2017-12-26 | 2019-07-04 | 주식회사 포스코 | Abrasion resistance steel having excellent homogeneous material properties and method for manufacturing the same |
| WO2020067685A1 (en) | 2018-09-27 | 2020-04-02 | 주식회사 포스코 | Wear resistant steel having excellent hardness and impact toughness and method of manufacturing the same |
| WO2020067686A1 (en) | 2018-09-27 | 2020-04-02 | 주식회사 포스코 | Abrasion resistant steel having excellent hardness and impact toughness, and manufacturing method therefor |
| DE112019006426T5 (en) | 2018-12-27 | 2021-09-09 | Komatsu Ltd. | Impact and wear-resistant component and method for manufacturing the same |
| US11332802B2 (en) | 2016-12-22 | 2022-05-17 | Posco | High-hardness wear-resistant steel and method for manufacturing same |
| US12098450B2 (en) | 2018-08-24 | 2024-09-24 | Komatsu Ltd. | Tracked undercarriage component, and method for producing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS579855A (en) * | 1980-06-20 | 1982-01-19 | Ito Kiko Kk | Steel shot |
| JPS6059053A (en) * | 1983-09-09 | 1985-04-05 | Daido Steel Co Ltd | Hot working tool steel |
-
1985
- 1985-01-18 JP JP679585A patent/JPS61166954A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS579855A (en) * | 1980-06-20 | 1982-01-19 | Ito Kiko Kk | Steel shot |
| JPS6059053A (en) * | 1983-09-09 | 1985-04-05 | Daido Steel Co Ltd | Hot working tool steel |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6439351A (en) * | 1987-08-04 | 1989-02-09 | Sumitomo Metal Ind | High strength and high toughness case hardening steel for ball cage |
| JPH01172550A (en) * | 1987-12-25 | 1989-07-07 | Nippon Steel Corp | Wear-resistant steel excellent in heat check resistance and having high hardness and high toughness |
| JPH0532462B2 (en) * | 1987-12-25 | 1993-05-17 | Nippon Steel Corp | |
| US9982331B2 (en) | 2012-09-19 | 2018-05-29 | Jfe Steel Corporation | Abrasion resistant steel plate having excellent low-temperature toughness and excellent corrosive wear resistance |
| WO2014045552A1 (en) | 2012-09-19 | 2014-03-27 | Ｊｆｅスチール株式会社 | Wear-resistant steel plate having excellent low-temperature toughness and corrosion wear resistance |
| WO2014045553A1 (en) | 2012-09-19 | 2014-03-27 | Ｊｆｅスチール株式会社 | Wear-resistant steel plate having excellent low-temperature toughness and corrosion wear resistance |
| CN103667924A (en) * | 2013-11-22 | 2014-03-26 | 首钢水城钢铁（集团）有限责任公司 | 40Cr hot-rolled wire rod production method |
| CN103667924B (en) * | 2013-11-22 | 2016-04-20 | 首钢水城钢铁（集团）有限责任公司 | A kind of production method of 40Cr gren rod |
| WO2015115086A1 (en) | 2014-01-28 | 2015-08-06 | Ｊｆｅスチール株式会社 | Wear-resistant steel plate and process for producing same |
| KR20160113683A (en) | 2014-01-28 | 2016-09-30 | 제이에프이 스틸 가부시키가이샤 | Wear-resistant steel plate and process for producing same |
| US10662493B2 (en) | 2014-01-28 | 2020-05-26 | Jfe Steel Corporation | Abrasion-resistant steel plate and method for manufacturing the same |
| JP2016094644A (en) * | 2014-11-14 | 2016-05-26 | 株式会社小松製作所 | Steel for chisel and chisel |
| WO2018117481A1 (en) | 2016-12-22 | 2018-06-28 | 주식회사 포스코 | High-hardness wear-resistant steel and method for manufacturing same |
| US11401572B2 (en) | 2016-12-22 | 2022-08-02 | Posco | High-hardness wear-resistant steel and method for manufacturing same |
| US11332802B2 (en) | 2016-12-22 | 2022-05-17 | Posco | High-hardness wear-resistant steel and method for manufacturing same |
| WO2019125076A1 (en) | 2017-12-22 | 2019-06-27 | 주식회사 포스코 | Wear-resistant steel having excellent hardness and impact toughness, and method for producing same |
| US11371125B2 (en) | 2017-12-22 | 2022-06-28 | Posco | Wear-resistant steel having excellent hardness and impact toughness, and method for producing same |
| US11473178B2 (en) | 2017-12-22 | 2022-10-18 | Posco | Wear-resistant steel having excellent hardness and impact toughness, and method for producing same |
| KR20190076762A (en) | 2017-12-22 | 2019-07-02 | 주식회사 포스코 | Wear resistant steel having excellent hardness and impact toughness and method of manufacturing the same |
| WO2019125083A1 (en) | 2017-12-22 | 2019-06-27 | 주식회사 포스코 | Wear-resistant steel having excellent hardness and impact toughness, and method for producing same |
| KR20190076790A (en) | 2017-12-22 | 2019-07-02 | 주식회사 포스코 | Wear resistant steel having excellent hardness and impact toughness and method of manufacturing the same |
| KR20190077916A (en) | 2017-12-26 | 2019-07-04 | 주식회사 포스코 | Abrasion resistance steel having excellent homogeneous material properties and method for manufacturing the same |
| US12098450B2 (en) | 2018-08-24 | 2024-09-24 | Komatsu Ltd. | Tracked undercarriage component, and method for producing the same |
| CN109112398A (en) * | 2018-08-29 | 2019-01-01 | 承德建龙特殊钢有限公司 | A kind of chrome-bearing alloy bar and preparation method thereof |
| KR20200035712A (en) | 2018-09-27 | 2020-04-06 | 주식회사 포스코 | Wear resistant steel having excellent hardness and impact toughness and method of manufacturing the same |
| KR20200035708A (en) | 2018-09-27 | 2020-04-06 | 주식회사 포스코 | Wear resistant steel having excellent hardness and impact toughness and method of manufacturing the same |
| WO2020067686A1 (en) | 2018-09-27 | 2020-04-02 | 주식회사 포스코 | Abrasion resistant steel having excellent hardness and impact toughness, and manufacturing method therefor |
| WO2020067685A1 (en) | 2018-09-27 | 2020-04-02 | 주식회사 포스코 | Wear resistant steel having excellent hardness and impact toughness and method of manufacturing the same |
| DE112019006426T5 (en) | 2018-12-27 | 2021-09-09 | Komatsu Ltd. | Impact and wear-resistant component and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0371499B2 (en) | 1991-11-13 |
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