JPS62136555A - Steel wire for wear and corrosion resistant parts having high fatigue strength - Google Patents
Steel wire for wear and corrosion resistant parts having high fatigue strengthInfo
- Publication number
- JPS62136555A JPS62136555A JP27737785A JP27737785A JPS62136555A JP S62136555 A JPS62136555 A JP S62136555A JP 27737785 A JP27737785 A JP 27737785A JP 27737785 A JP27737785 A JP 27737785A JP S62136555 A JPS62136555 A JP S62136555A
- Authority
- JP
- Japan
- Prior art keywords
- steel wire
- wear
- fatigue strength
- weight
- wear resistance
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は繰返し荷重を受ける小型の各種ばね、ピストン
リング等（以下ばね等と記す）弾力を利用する製品の製
造に用いる＃ｌ１１１Ａに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to #111A used for manufacturing products that utilize elasticity, such as various small springs and piston rings (hereinafter referred to as springs, etc.) that are subjected to repeated loads.
ばね等は、その荷重に対し十分な疲労強度を有するとと
もに、この疲労強度が、特に発鋳、腐食等により大きく
低下し易いため、使用雰囲気に応じて、十分な耐食性が
必要である。また、ばね等の荷重負荷面、またはピスト
ンリングの外周および上下面は、高い耐摩耗性が要求さ
れる。Springs and the like have sufficient fatigue strength against the load, and since this fatigue strength tends to be significantly reduced, particularly due to casting, corrosion, etc., sufficient corrosion resistance is required depending on the atmosphere in which they are used. Further, load bearing surfaces such as springs, or the outer periphery and upper and lower surfaces of piston rings are required to have high wear resistance.
このばね等は、冷間加工による加工硬化１、または焼入
れ、焼もどしの熱処理により適当なレベルに強化された
線、棒、板等をばね形状に成形加工する方法で、一般に
製造される。またこれらのばね等は、その塑性成形加工
時１機器への組込時、使用時等に通常の使用時以上また
は使用時と異なる方向に突発的な変形、荷重等を受ける
ことがあり、これらによってもクラック、折損等を生じ
ないよう高い靭性を要求される。These springs and the like are generally manufactured by a method of forming wires, rods, plates, etc. into a spring shape, which have been strengthened to an appropriate level by work hardening 1 by cold working or by heat treatment such as quenching and tempering. In addition, these springs, etc., may be subjected to sudden deformation, load, etc. during plastic molding, when incorporated into a single device, during use, etc., in a direction greater than or equal to that during normal use or in a direction different from that during use. Therefore, high toughness is required to prevent cracks, breakage, etc.
従来゛、高い疲労強度に加え、耐摩耗、耐食性等を具備
したばね等用鋼線として、中〜高Ｃ１高Ｃｒ鋼線が使用
されてきた。しかし、従来のこれらの鋼線は、疲労強度
、耐摩耗性、耐食性等の要求特性のバランスが必ずしも
適切でない、個々の特性も十分なレベルに達していない
等の不満があった・
〔発明が解決しようとする問題点〕
本発明は、特に突発的荷重または変形に十分耐える靭性
とともに、高い疲労強度、耐摩耗性および耐食性を具備
したばね等用の鋼線を提供することを目的とする。Conventionally, medium to high C1 and high Cr steel wires have been used as steel wires for springs, etc., which have high fatigue strength, wear resistance, corrosion resistance, etc. However, these conventional steel wires have been dissatisfied with the fact that the balance of required properties such as fatigue strength, wear resistance, and corrosion resistance is not always appropriate, and that the individual properties have not reached a sufficient level. Problems to be Solved] An object of the present invention is to provide a steel wire for use in springs, etc., which has sufficient toughness to withstand sudden loads or deformation, as well as high fatigue strength, wear resistance, and corrosion resistance.
本発明は 重量％で、
Ｃ０．３５〜０．８０％、
Ｃｒ １４．０−２０．０％、
（ただし、Ｃｒ＋２５Ｇ≧２５、Ｃｒ＋２４Ｃ≦３４）
（Ｍｏ＋１／２Ｗ） ０．５〜２．０％、およびＶ ０
．３−２，０％の１種または２種を含み、
Ｓｉ≦１．０％。The present invention has the following properties by weight: C0.35-0.80%, Cr 14.0-20.0% (However, Cr+25G≧25, Cr+24C≦34)
(Mo+1/2W) 0.5-2.0%, and V 0
．． Contains one or two types of 3-2.0%, Si≦1.0%.
Ｍｎ≦１．０％ならびに残部Ｆｅおよび不可避的不純物
からなり、焼入れ、焼もどし、熱処理により硬さをＩ（
ＲＣ３５〜４８としたことを特徴とする高疲労強度耐摩
耐食部品用鋼線である。Consisting of Mn≦1.0% and the remainder Fe and unavoidable impurities, the hardness can be reduced to I (
This is a steel wire for high fatigue strength, wear and corrosion resistant parts, characterized by having RC35 to 48.
また、上記組成にさらにＮｉ０．３〜２．０％を添加し
たものである。Moreover, 0.3 to 2.0% of Ni is further added to the above composition.
一般に、鉄鋼において靭性、疲労強度、耐摩耗性、耐食
性等の各特性は、相反する関係にある。Generally, in steel, properties such as toughness, fatigue strength, wear resistance, and corrosion resistance have contradictory relationships.
しかし１本発明に係るばね等においては、その使用環境
が多岐に亘ってきており、単に弾性的な必要特性だけで
なく、上記に述べた各種特性を兼備した材料が求められ
ている。However, the springs and the like according to the present invention have been used in a wide variety of environments, and there is a demand for materials that have not only the necessary elastic properties but also the various properties described above.
以下に本発明の数値限定理由を述べる。The reasons for limiting the numerical values of the present invention will be described below.
Ｃは、鉄鋼の強度および耐摩耗性を向上させるためには
必須の元素であり、強度、耐摩耗性重視（例えば冷間工
具鋼）の場合は、高Ｃ１靭性を重視する場合（例えば熱
間工具鋼）は低Ｃというように、概略的に区別されてい
る。C is an essential element for improving the strength and wear resistance of steel. Tool steels) are roughly classified as low C.
またＣｒは、耐食性に非常に有効な元素であり、かつ、
炭化物を形成して耐摩耗性向上に重要な役割を果す。し
たがって１強度、耐摩耗性、耐食性を兼備するためには
、高Ｃ１高Ｃｒが有利である。In addition, Cr is a very effective element for corrosion resistance, and
Forms carbide and plays an important role in improving wear resistance. Therefore, in order to combine strength, wear resistance, and corrosion resistance, high C1 and high Cr are advantageous.
しかし、周知のように高Ｃ１高Ｏｒの場合、凝固時に巨
大な共晶Ｃｒ炭化物を生成し、これが疲労強度を著しく
低下させるのみでなく、冷間における加工性をも害する
。したがって、各特性をバランス良く発揮させるために
は、単にＣ，Ｃｒ、個々の限定だけでなく、両者の関係
を勘案する必要がある。本発明はこれらを考慮してなさ
れたものであり１図の斜線部で示されたＣ、Ｃｒ量に限
定した。Ｃは強度および耐摩耗性のためには、０．３５
重量％以上必要であり、また、０．８重量％を越えると
靭性を劣化させる。Ｏｒは十分な耐食性を発揮させるた
めには１４重量％以上が望ましい。しかし、２０重量％
を越えると焼入れ時に十分な硬さが得られにくくなるた
め、２０％を上限とした。また、これらＣ，Ｃｒの範囲
内において、Ｃ，Ｃｒの関係をＣｒ＋２５Ｃ≧２５かつ
Ｃｒ＋２４Ｃ≦３４に限定した。However, as is well known, in the case of high C1 and high Or, huge eutectic Cr carbides are generated during solidification, which not only significantly reduces fatigue strength but also impairs cold workability. Therefore, in order to exhibit each characteristic in a well-balanced manner, it is necessary to consider not only the individual limitations of C and Cr, but also the relationship between them. The present invention was made with these considerations in mind, and the amounts of C and Cr are limited to those shown by the shaded area in Figure 1. C is 0.35 for strength and wear resistance
More than 0.8% by weight is required, and if it exceeds 0.8% by weight, the toughness deteriorates. Or is desirably 14% by weight or more in order to exhibit sufficient corrosion resistance. However, 20% by weight
If it exceeds 20%, it becomes difficult to obtain sufficient hardness during quenching, so the upper limit was set at 20%. Furthermore, within these ranges of C and Cr, the relationship between C and Cr was limited to Cr+25C≧25 and Cr+24C≦34.
この範囲内では５組成的に巨大共晶Ｃｒ炭化物が生成し
難く、たとえ大型鋼塊で製造し、偏析により巨大共晶Ｃ
ｒ炭化物が生成した場合でも、高′温拡散処理（１１０
０〜１２００℃）を行なうことにより、これを消失また
は小さくすることが可能となる。Within this range, it is difficult to form giant eutectic Cr carbides due to the composition, and even if large steel ingots are manufactured, giant eutectic Cr carbides may be formed due to segregation.
Even if r-carbide is generated, high temperature diffusion treatment (110
0 to 1200°C), it becomes possible to eliminate or reduce this.
ＭｏおよびＷは、鉄鋼中において、はぼ同様の働きをす
るものであり、ともに耐食性をやや高める元素であり、
また特に炭化物を形成して耐摩耗性向上に寄与する。Ｗ
はＭｏの約２倍の原子量を有するため、重量％では（Ｍ
ｏ＋１／２Ｗ）で限定した。Mo and W act in the same way in steel, and both are elements that slightly increase corrosion resistance.
It also particularly contributes to improving wear resistance by forming carbides. W
has about twice the atomic weight of Mo, so in weight% (M
o+1/2W).
■は、硬質の炭化物を形成する元素であり、特にＷ、Ｍ
ｏと同様に耐摩耗性向上に寄与する。したがって、これ
ら１種または２種の元素グループを含有することにより
、耐摩耗性をさらに向上させることができる。限定範囲
は、上記の効果を発現させるためには、（Ｍｏ＋１／２
Ｗ）で０．５重量％以上、■で０．３重量％以上必要で
あるが、多量の添加は硬質炭化物の量を増し、疲労強度
低下の原因になるとともに高価な元素でもあるため、い
ずれのグループも上限を２％に定めた。■ is an element that forms hard carbide, especially W, M
Like o, it contributes to improving wear resistance. Therefore, by containing one or two of these element groups, wear resistance can be further improved. In order to express the above effect, the limited range is (Mo+1/2
It is necessary to add 0.5% by weight or more for W) and 0.3% by weight or more for group also set the upper limit at 2%.
Ｎｉは、母相に固溶して靭性を向上させ、また冷間、熱
間における加工性も改善する。このためには、少なくと
も０．３重量％以上必要であるが、２重量％を越えると
、熱処理時の硬さが十分確保できなくなるため、これを
上限とした。Ni dissolves in the matrix to improve toughness and also improves cold and hot workability. For this purpose, at least 0.3% by weight or more is required, but if it exceeds 2% by weight, sufficient hardness during heat treatment cannot be ensured, so this is set as the upper limit.
Ｓｉ、Ｍｎはともに、脱酸剤として添加されるものであ
る。ともに、１重量％を越えると、Ｓｉにおいては靭性
、Ｍｎにおいては熱間における加工性を劣下させるため
、これを上限とした。Both Si and Mn are added as deoxidizing agents. If both exceed 1% by weight, the toughness of Si and the hot workability of Mn deteriorate, so this was set as the upper limit.
本発明の鋼線においては、焼入れ、焼もどし後の硬さを
ＨＲＣ３５〜４８に限定した。これは１曲げ加工など複
雑な形状に加工する際の冷間加工性を考慮したものであ
り、ＨＲＣ４８を越えると曲げ加工の際折損の可能性が
大きくなる。またＨＲＣ３５より軟らかいと、ばねとし
ての耐力が不足し、耐摩耗性も不足するため、これを下
限とした。またこの硬さ範囲は、高温焼もどし領域（５
４０〜６００℃）で得られるものであり、窒化等の表面
硬化処理（５００〜５４０’Ｃ）を適用した場合、内部
はＨＲＣ３５〜４８の靭性に富み、表面は窒化相を形成
し、微細な炭化物との複合効果により、高い耐摩耗性を
有するばねを製造することが可能となる。In the steel wire of the present invention, the hardness after quenching and tempering is limited to HRC35-48. This is in consideration of cold workability when processing into a complicated shape such as one bending process, and if HRC exceeds 48, there is a high possibility of breakage during bending process. Moreover, if it is softer than HRC35, the yield strength as a spring will be insufficient and the wear resistance will also be insufficient, so this was set as the lower limit. Also, this hardness range is in the high temperature tempering region (5
When surface hardening treatment such as nitriding (500 to 540'C) is applied, the interior has a toughness of HRC 35 to 48, and the surface forms a nitrided phase, forming a fine The combined effect with carbide makes it possible to produce springs with high wear resistance.
本発明鋼の性能を実証するため１表１に示す化学成分の
鋼を製造し、焼入れ、焼もどし、熱処理を施し、表２に
示すほぼ同硬さに調整したのち。In order to demonstrate the performance of the steel of the present invention, steel having the chemical composition shown in Table 1 was manufactured, and the steel was quenched, tempered, and heat treated to have almost the same hardness as shown in Table 2.
各種試験を行なった。その結果を表２に示す。Various tests were conducted. The results are shown in Table 2.
表２．各種特性評価結果
比較材は、マルテンサイト系ステンレス鋼である ５Ｏ
５４４０Ｂ、’５ＵＳ４２０Ｊ２を用いた。Table 2. The comparison material for various property evaluation results is martensitic stainless steel.
5440B, '5US420J2 was used.
この状態において、本発明材Ａ−Ｄ、および５ＵＳ４２
０Ｊ２であるＦは、巨大な共晶Ｃｒｉ化物は存在せず、
微細な炭化物が均一に分散している。In this state, the present invention materials A-D and 5US42
F, which is 0J2, does not have a huge eutectic Cri compound,
Fine carbides are uniformly dispersed.
疲労強度は、回転曲げ疲労試験機を用い、Ｌ Ｘ １０
’図における疲労限として求めた。本発明材は、巨大な
共晶Ｃｒ炭化物がなく、また介在物の清浄度も高いため
、疲労限において比較材に対し、高い値を示している。Fatigue strength was measured using a rotary bending fatigue tester, L x 10
'It was determined as the fatigue limit in the figure. The material of the present invention has no large eutectic Cr carbide and has a high degree of cleanliness of inclusions, so it exhibits a higher fatigue limit than the comparative material.
Ｆは成分的に共晶Ｃｒ炭化物を消失させることは不可能
であり、本試験片においても１０〜１５μｍ程度の巨大
炭化物が散在し、疲労限低下の原因となっている。また
Ｆは、酸化物系の介在物が他と比較して多く、本試験片
の破面観察の結果では、本発明材が表面を起点として破
損に至っているのに対し、Ｆの破面ば、内部の介在物を
起点として破壊している例が半数を越えていた。It is impossible for F to eliminate the eutectic Cr carbide as a component, and even in this test piece, giant carbides of about 10 to 15 μm are scattered, which causes a decrease in the fatigue limit. In addition, F has more oxide-based inclusions than others, and the results of fracture surface observation of this test piece show that the fracture of the present invention material starts from the surface, whereas the fracture surface of F In more than half of the cases, the destruction started from internal inclusions.
耐摩耗性の評価は、各材料の平板試験片にＳＣＭ４４０
のリングを一定圧力下で回転摺動させ、その摩耗痕から
単位摺動距離および単位摺動面積当りの摩耗体積（比摩
耗量）として求めた。Wear resistance evaluation was performed using SCM440 on flat test pieces of each material.
The ring was rotated and slid under constant pressure, and the wear volume (specific wear amount) per unit sliding distance and unit sliding area was determined from the wear marks.
Ｅは前にも述べたように、巨大な共晶ｃｒ炭化物の効果
により、高い耐摩耗性を示しているが、本発明材におい
ては、共晶Ｃｒ炭化物より高い硬さの炭化物を形成する
Ｍｏ、Ｗ、Ｖの添加により、Ｅを上回る、または同等の
耐摩耗性を示している。As mentioned earlier, E exhibits high wear resistance due to the effect of giant eutectic Cr carbides, but in the material of the present invention, Mo, which forms carbides with higher hardness than eutectic Cr carbides, , W, and V show wear resistance that is superior to or equivalent to that of E.
Ｆは、Ａ−Ｆに比較して低Ｃ−低Ｃｒであり、炭化物の
面積率も少ないため、高い耐摩耗性を期待することは難
しい。F has lower C and lower Cr than A-F, and has a smaller area ratio of carbides, so it is difficult to expect high wear resistance.
耐食性の評価においては、４０℃、 １０％Ｈ２ＳＯ。In the evaluation of corrosion resistance, 40°C, 10% H2SO.
水溶液中に各材料を１０時間浸漬し、単位面積当りの腐
食減少量を求めた。本発明材は、ＣｒとＣ量のバランス
を考慮し、かつ耐食元素であるＮｉ、ＭＯｌＷを添加す
ることにより、耐食性の高い鋼種として知られている５
ＵＳ４４０Ｂや５ＵＳ４２０Ｊ２よりさらに優れた耐食
性を示すことがわかる。これら各特性に対し、本発明材
は十分な性能を有し、かつ適切なバランスを確保してい
ることがわかる。Each material was immersed in an aqueous solution for 10 hours, and the amount of corrosion reduction per unit area was determined. The material of the present invention has been developed by considering the balance between Cr and C content, and by adding corrosion-resistant elements such as Ni and MOLW, which is known as a steel type with high corrosion resistance.
It can be seen that it exhibits even better corrosion resistance than US440B and 5US420J2. It can be seen that the material of the present invention has sufficient performance with respect to each of these characteristics and maintains an appropriate balance.
本発明は、鋼線の用途、使用環境の多様化に対応すべく
、疲労強度、耐摩耗性、耐食性を十分に兼備させたもの
である。これらの具体的用途としては、ピストンリング
のようなばね性、摺動摩耗に対する耐摩耗性、あるいは
複雑な振動に対する高い疲労強度等の苛酷な使用条件に
ある部材に最適である。The present invention sufficiently combines fatigue strength, wear resistance, and corrosion resistance in order to respond to the diversification of the applications and usage environments of steel wires. Specifically, they are ideal for members that are used under severe conditions such as piston rings, which have spring properties, wear resistance against sliding wear, or high fatigue strength against complex vibrations.
３１２図は、本発明のＣとＣｒの添加量の関係を示すも
のである。
第１目
ご ％
手続補正書（自船
１、。１６．１．１．．１３１１゜
事件の表示
昭 和６０ｉ１ミ ↑、ＩＩ′許願第 −ン７３７７
号’ａ ｎ＋＋ ｃｒ＞ 名＃示 高疲労強
度耐摩耐食部品用ｓｇａ補正をする者
ｒ、 ＃ｔｓｏｇ＋ １４ ；ｆ、金属株式会社代
理 人
１、・＋ ＋ｉ 東京都千代ＩＴＩ区丸の丙
（丁目１番２汗日立金属株式会社内 域話２８４−４６
４２明細膚の「発明の詳細な説明」の＋ｌＩ。
補正の内容
１、明細書の発明の詳細な説明の欄を次のように訂正す
る。
（１）明細書第２頁第１５行「発錆」を「発錆」に訂正
する。
（２）同書第９頁表１の表題中の「科学成分」を「化学
成分」に訂正する。
（３）回書第１０頁表２を添付の表２と差し替える。
（４）回書第１０頁下から３行目「図」を１回」に訂正
する。
（５）同書第１１頁第１行および第１９行の「Ｆ」を「
Ｅ」に訂正する。
以上
表２．各種特性評価結果Figure 312 shows the relationship between the amounts of C and Cr added in the present invention. 1st item % Procedural amendment (Own ship 1, 16.1.1..1311゜Indication of incident Showa 60i1mi ↑, II' Application No. 7377
No.'a n++ cr> Name # Indication Person who performs sga correction for high fatigue strength wear-resistant and corrosion-resistant parts r, #tsog+ 14; 1st 2nd sweat within Hitachi Metals Co., Ltd. area talk 284-46
42 of the "Detailed Description of the Invention" +lI. Contents of amendment 1: The detailed description of the invention column in the specification is corrected as follows. (1) "Rusting" on page 2, line 15 of the specification is corrected to "rusting". (2) "Scientific components" in the title of Table 1 on page 9 of the same book is corrected to "chemical components." (3) Replace Table 2 on page 10 of the circular with the attached Table 2. (4) On the 3rd line from the bottom of page 10 of the circular, ``Figure'' is corrected to ``Once''. (5) Change “F” in lines 1 and 19 of page 11 of the same book to “
Correct to "E". Table 2 above. Various characteristic evaluation results
Claims (1)
（Ｍｏ＋１／２Ｗ）０．５〜２．０％およびＶ０．３〜
２．０％の１種または２種を含み、 Ｓｉ≦１．０％、 Ｍｎ≦１．０％ならびに残部Ｆｅおよび不可避的不純物
からなり、焼入れ、焼もどし、熱処理により硬さをＨＲ
Ｃ３５〜４８としたことを特徴とする高疲労強度耐摩耐
食部品用鋼線。 ２ 重量％で、 Ｃ０．３５〜０．８０％、 Ｃｒ１４．０〜２０．０％、 （ただし、Ｃｒ＋２５Ｃ≧２５、Ｃｒ＋２４Ｃ≦３４）
（Ｍｏ＋１／２Ｗ）０．５〜２．０％、およびＶ０．３
〜２．０％の１種または２種を含み、 Ｓｉ≦１．０％ Ｍｎ≦１．０％ Ｎｉ０．３〜２．０％ならびに残部Ｆｅおよび不可避的
不純物からなり、焼入れ、焼もどし、熱処理により硬さ
をＨＲＣ３５〜４８としたことを特徴とする高疲労強度
耐摩耐食部品用鋼線。[Claims] 1% by weight, C0.35-0.80%, Cr14.0-20.0%, (However, Cr+25C≧25, Cr+24C≦34)
(Mo+1/2W)0.5~2.0% and V0.3~
Contains one or two types of 2.0%, Si≦1.0%, Mn≦1.0%, and the balance is Fe and unavoidable impurities, and the hardness is reduced to HR by quenching, tempering, and heat treatment.
A steel wire for use in parts with high fatigue strength and wear resistance and corrosion resistance, characterized by having C35 to C48. 2% by weight, C0.35-0.80%, Cr14.0-20.0%, (However, Cr+25C≧25, Cr+24C≦34)
(Mo+1/2W) 0.5-2.0% and V0.3
~2.0% of one or two types, Si≦1.0% Mn≦1.0% Ni 0.3 to 2.0% and the balance Fe and unavoidable impurities, and can be quenched, tempered, and heat treated. A steel wire for high fatigue strength, wear and corrosion resistant parts, characterized by having a hardness of HRC 35 to 48.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27737785A JPS62136555A (en) | 1985-12-10 | 1985-12-10 | Steel wire for wear and corrosion resistant parts having high fatigue strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27737785A JPS62136555A (en) | 1985-12-10 | 1985-12-10 | Steel wire for wear and corrosion resistant parts having high fatigue strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62136555A true JPS62136555A (en) | 1987-06-19 |
| JPH0470388B2 JPH0470388B2 (en) | 1992-11-10 |
Family
ID=17582675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27737785A Granted JPS62136555A (en) | 1985-12-10 | 1985-12-10 | Steel wire for wear and corrosion resistant parts having high fatigue strength |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62136555A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01119646A (en) * | 1987-10-31 | 1989-05-11 | Aichi Steel Works Ltd | Steel for piston ring |
| JPH01142057A (en) * | 1987-11-28 | 1989-06-02 | Aichi Steel Works Ltd | Steel for piston ring |
| US4985092A (en) * | 1987-06-11 | 1991-01-15 | Aichi Steel Works, Limited | Steel having good wear resistance |
| JPH09176736A (en) * | 1995-10-10 | 1997-07-08 | Rasmussen Gmbh | Production of spring band crip |
| JP6472938B1 (en) * | 2017-10-30 | 2019-02-20 | Ｔｐｒ株式会社 | Pressure ring, internal combustion engine, wire for pressure ring, and method for manufacturing wire for pressure ring |
| WO2019087562A1 (en) * | 2017-10-30 | 2019-05-09 | Ｔｐｒ株式会社 | Pressure ring, internal combustion engine, wire stock for pressure ring, and method of manufacturing wire stock for pressure ring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376119A (en) * | 1976-12-17 | 1978-07-06 | Hitachi Metals Ltd | Highhhardness highhchrome roll and method of making same |
| JPS5474218A (en) * | 1977-11-26 | 1979-06-14 | Kanto Special Steel Works Ltd | Steel quenched roll for paper making |
| JPS6023096A (en) * | 1983-07-19 | 1985-02-05 | Sony Corp | Cover film for color hard copying paper |
-
1985
- 1985-12-10 JP JP27737785A patent/JPS62136555A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376119A (en) * | 1976-12-17 | 1978-07-06 | Hitachi Metals Ltd | Highhhardness highhchrome roll and method of making same |
| JPS5474218A (en) * | 1977-11-26 | 1979-06-14 | Kanto Special Steel Works Ltd | Steel quenched roll for paper making |
| JPS6023096A (en) * | 1983-07-19 | 1985-02-05 | Sony Corp | Cover film for color hard copying paper |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4985092A (en) * | 1987-06-11 | 1991-01-15 | Aichi Steel Works, Limited | Steel having good wear resistance |
| JPH01119646A (en) * | 1987-10-31 | 1989-05-11 | Aichi Steel Works Ltd | Steel for piston ring |
| JPH01142057A (en) * | 1987-11-28 | 1989-06-02 | Aichi Steel Works Ltd | Steel for piston ring |
| JPH09176736A (en) * | 1995-10-10 | 1997-07-08 | Rasmussen Gmbh | Production of spring band crip |
| JP6472938B1 (en) * | 2017-10-30 | 2019-02-20 | Ｔｐｒ株式会社 | Pressure ring, internal combustion engine, wire for pressure ring, and method for manufacturing wire for pressure ring |
| WO2019087562A1 (en) * | 2017-10-30 | 2019-05-09 | Ｔｐｒ株式会社 | Pressure ring, internal combustion engine, wire stock for pressure ring, and method of manufacturing wire stock for pressure ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0470388B2 (en) | 1992-11-10 |
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