JPS63199847A - Machine parts having high strength, high toughness and wear resistance - Google Patents
Machine parts having high strength, high toughness and wear resistanceInfo
- Publication number
- JPS63199847A JPS63199847A JP2809087A JP2809087A JPS63199847A JP S63199847 A JPS63199847 A JP S63199847A JP 2809087 A JP2809087 A JP 2809087A JP 2809087 A JP2809087 A JP 2809087A JP S63199847 A JPS63199847 A JP S63199847A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- wear resistance
- toughness
- machine parts
- high strength
- 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
- 239000000463 material Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000005279 austempering Methods 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 229910001566 austenite Inorganic materials 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 abstract description 2
- 239000003595 mist Substances 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001240 Maraging steel Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はオーステンパー処理によって高強度、高靭性、
耐磨耗性を付与した機械部品に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides high strength, high toughness, and
It relates to mechanical parts with wear resistance.
［従来の技術］
ギヤー、シャフト、ツース等の高強度、高靭性および耐
磨耗性を必要とする各種機械部品には、従来よりＣｒ−
Ｍｏ、 Ｎ １−Ｃｒ −ＭＯ系低合金鋼およびその他
の低合金鋼の焼入・焼戻し材、あるいは表面硬化処理材
が多く用いられているが、より厳しい用途に対しては高
価なマルエージ鋼が採用される場合がある。[Prior Art] Cr-
Mo, N1-Cr-MO low alloy steels and other low alloy steels are often quenched and tempered, or surface hardened, but for more severe applications, expensive marage steels are used. May be adopted.
しかし、産業の高度化に伴い、各種機械類はより小型、
軽量化が要求され、それに使用される鉄鋼材料も小型、
軽量、高応力化の傾向にあり、これら苛酷な使用に耐え
て、なおかつ廉価な材料が強く求められている。However, as industry becomes more sophisticated, various types of machinery become smaller and smaller.
Weight reduction is required, and the steel materials used for it are also smaller and smaller.
There is a trend toward lighter weight and higher stress, and there is a strong demand for inexpensive materials that can withstand these harsh uses.
［発明が解決しようとする問題点］
この発明は、これらの問題点を解決しようとするもので
市って、Ｎ１、ＣＯ等の高価な合金元素を含まない廉価
な素材を用いて苛酷な条件に耐える機械部品を提供する
ものでおる。[Problems to be Solved by the Invention] This invention attempts to solve these problems by using an inexpensive material that does not contain expensive alloying elements such as N1 and CO and We provide mechanical parts that can withstand
［問題点を解決するための手段］
上記問題点を解決するための本発明の構成は、重量基準
で
Ｃ０．４０〜０．８０％
３ｉ ２．００〜３．５０％
Ｍ ｎ ０．２０〜１．００％
Ｃｕ ０．５０〜２．００％
Ｍｏ ０．２０〜０．４０％
を含有し、残部がＦｅおよび通常の不可避的不純物から
成る鋼材で作られた部品であって、オーステンパー処理
を施したことを特徴とする高強度、高靭性、耐磨耗性機
械部品である。[Means for Solving the Problems] The structure of the present invention for solving the above problems is based on weight: C0.40 to 0.80% 3i 2.00 to 3.50% M n 0.20 to A part made of steel containing 1.00% Cu 0.50-2.00% Mo 0.20-0.40%, with the balance consisting of Fe and normal unavoidable impurities, and is austempered. High strength, high toughness, and wear-resistant mechanical parts.
この発明におけるオーステンパー処理は、部品材料をＡ
＋変態点以上のオーステナイト領域から塩浴、ミストま
たはそれに類する冷却媒体を用いてＭＳ点以上の２００
〜４００℃の温度に急冷し、その温度で所定時間保持す
るものである。かかる処理によって、引張強度が１５０
〜１９０ ｋｇｆ／ｍ１、伸びが１０〜３０％、衝撃靭
性値が３〜５ｋｇｆ −ｍ／ｃｍ２とマルエージ鋼に匹
敵する特性を備えたギヤー、シャフト、ツース等の各種
機械部品を極めて廉価に供給し得るものである。In the austempering process in this invention, the part material is
+ From the austenite region above the transformation point to 200 above the MS point using a salt bath, mist or similar cooling medium
It is rapidly cooled to a temperature of ~400°C and held at that temperature for a predetermined period of time. This treatment increases the tensile strength to 150
We supply various mechanical parts such as gears, shafts, and teeth with properties comparable to marage steel, such as ~190 kgf/m1, elongation of 10 to 30%, and impact toughness of 3 to 5 kgf -m/cm2, at extremely low prices. It's something you get.
本発明は靭・延性を損わずに質量効果および強度を改善
する目的で、Ｃ−８ｉｔＩ４に特にＣｕを０．５〜１．
５０％添加し、マルエージ鋼に匹敵する特性を可能にし
たものである。In the present invention, for the purpose of improving mass effect and strength without impairing toughness and ductility, Cu is added to C-8itI4 by 0.5 to 1.
With 50% addition, it is possible to achieve properties comparable to marage steel.
ＣＵはＯＣＴ曲線のパーライトノーズを右側に移行させ
、オーステンパー処理における質量効果を減少させると
共に、生成したベイナイトを強化するが、０．５０％未
満ではその効果が十分でなく、２．００％を超えると靭
性を低下せしめる。CU shifts the pearlite nose of the OCT curve to the right side, reduces the mass effect in the austempering process, and strengthens the produced bainite, but the effect is not sufficient at less than 0.50%, and 2.00% Exceeding this will reduce toughness.
Ｃはマトリクスに固溶あるいは炭化物を形成して焼入性
および強度、耐摩耗性を改善する作用をし、０．４０％
未満では強度の確保が難しく、０．８０％を超えると黒
鉛を生成して靭性を低下せしめる。C functions to improve hardenability, strength, and wear resistance by forming a solid solution or carbide in the matrix, and contains 0.40%
If it is less than 0.80%, it is difficult to ensure strength, and if it exceeds 0.80%, graphite is produced and the toughness is reduced.
３ｉはマトリクスに固溶して焼入性および強度、耐摩耗
性を改善し、２．００％未満では十分な強度が得られず
、３゜５０％を超えると黒鉛化を促進して靭性を低下せ
しめ、また熱間加工性を害する。3i is dissolved in the matrix to improve hardenability, strength, and wear resistance. If it is less than 2.00%, sufficient strength cannot be obtained, and if it exceeds 3.50%, it promotes graphitization and improves toughness. It also impairs hot workability.
Ｍ ｎ Ｇ、ｌ； Ｃｕと同様の目的で添加されるが、
０、２０％未満ではその効果が得られず、また１、００
％を超えると残留オーステナイトを増加せしめて強度お
よび寸法安定性を害する。M n G,l; It is added for the same purpose as Cu, but
If it is less than 0.20%, the effect cannot be obtained, and if it is less than 1.00%,
If it exceeds %, retained austenite increases and strength and dimensional stability are impaired.
ＭＯは焼入性および靭性を改善する目的で添加されるが
、０．２０％未満ではその効果が十分でなく、また高価
であることからその上限を０．４０％とする。MO is added for the purpose of improving hardenability and toughness, but if it is less than 0.20%, the effect is insufficient and it is expensive, so the upper limit is set at 0.40%.
以下にこの発明を実施例によって説明する。This invention will be explained below by way of examples.
［実施例］ Ｑ ０．６０％ ３ｉ ２．３７％ Ｍｎ ０８５０％ ＣＵ １．１０％ ＭＯ０，３３％ を含有する鋼材の鋳造材を３０ｍｍφ（５，ＢＳ）に。[Example] Q 0.60% 3i 2.37% Mn 0850% CU 1.10% MO0.33% Cast steel material containing 30mmφ (5, BS).
鍛造した材料を ９００’ＣＸ ０．５時間保持後 ３００〜ｂ のオーステンパー処理をした。forged material 900’CX after holding for 0.5 hours 300~b Austempered.
この材料を試料として引張り強さ、衝撃靭性等を試験し
た。その結果を添付図面のグラフに示す。This material was used as a sample and tested for tensile strength, impact toughness, etc. The results are shown in the graph of the attached drawing.
添付図面のグラフから明らかなように、３００〜３７５
°Ｃのオーステンパ一温度範囲で、引張強度σＢは１８
５〜１５０ｋｇｆ／ｍｍ２、σＹは１５０〜１００ ｋ
ｇｆ／ｍｍ’ 、伸びは１５〜３０％、絞りは３５〜５
５％、２ｍｍＶ衝撃値は２〜４ｋｏｆ・ｍ／ｃｍ２であ
ることがわかる。特にオーステンパー低温域の特性はマ
ルエージ鋼の特性に匹敵する。As is clear from the graph in the attached drawing, 300-375
In the austempering temperature range of °C, the tensile strength σB is 18
5 to 150 kgf/mm2, σY is 150 to 100 k
gf/mm', elongation is 15-30%, aperture is 35-5
It can be seen that the 5%, 2 mmV impact value is 2 to 4 kof·m/cm2. In particular, the properties in the austempering low temperature range are comparable to those of maraging steel.
［発明の効果］
以上説明したように、この発明による各種機械部品は強
度、靭性、耐磨耗性に優れ、しかも廉価である点で画期
的な特性を発揮しｊｑるものである。[Effects of the Invention] As explained above, the various mechanical parts according to the present invention exhibit innovative properties in that they are excellent in strength, toughness, and wear resistance, and are inexpensive.
図面は本発明の材料の特性を示すグラフで必る。 The drawings are graphs showing the properties of the materials of the invention.
Claims (1)
成る鋼材で作られた部品であって、オーステンパー処理
を施してなることを特徴とする高強度、高靭性、耐磨耗
性機械部品。[Claims] On a weight basis, C0.40-0.80% Si2.00-3.50% Mn0.20-1.00% Cu0.50-2.00% Mo0.20-0.40% A mechanical component having high strength, high toughness, and wear resistance, characterized in that the component is made of a steel material containing Fe and the remainder is Fe and ordinary unavoidable impurities, and is characterized by being subjected to an austempering treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2809087A JPS63199847A (en) | 1987-02-12 | 1987-02-12 | Machine parts having high strength, high toughness and wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2809087A JPS63199847A (en) | 1987-02-12 | 1987-02-12 | Machine parts having high strength, high toughness and wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63199847A true JPS63199847A (en) | 1988-08-18 |
Family
ID=12239081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2809087A Pending JPS63199847A (en) | 1987-02-12 | 1987-02-12 | Machine parts having high strength, high toughness and wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63199847A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003306741A (en) * | 2002-04-16 | 2003-10-31 | Japan Science & Technology Corp | High-tensile cast steel and production method thereof |
| JP2017526823A (en) * | 2014-08-06 | 2017-09-14 | アウスフェリティク・アーベー | Materials, methods and components |
| US11708624B2 (en) | 2018-09-14 | 2023-07-25 | Ausferritic Ab | Method for producing an ausferritic steel, austempered during continuous cooling followed by annealing |
-
1987
- 1987-02-12 JP JP2809087A patent/JPS63199847A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003306741A (en) * | 2002-04-16 | 2003-10-31 | Japan Science & Technology Corp | High-tensile cast steel and production method thereof |
| JP2017526823A (en) * | 2014-08-06 | 2017-09-14 | アウスフェリティク・アーベー | Materials, methods and components |
| JP2020002467A (en) * | 2014-08-06 | 2020-01-09 | アウスフェリティク・アーベー | Material, method and member |
| US10787718B2 (en) | 2014-08-06 | 2020-09-29 | Ausferritic Ab | Material, method and component |
| US11708624B2 (en) | 2018-09-14 | 2023-07-25 | Ausferritic Ab | Method for producing an ausferritic steel, austempered during continuous cooling followed by annealing |
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