CN104233102A - Precisely casted high-strength high-toughness cast steel - Google Patents
Precisely casted high-strength high-toughness cast steel Download PDFInfo
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- CN104233102A CN104233102A CN201410288002.5A CN201410288002A CN104233102A CN 104233102 A CN104233102 A CN 104233102A CN 201410288002 A CN201410288002 A CN 201410288002A CN 104233102 A CN104233102 A CN 104233102A
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Abstract
The invention discloses precisely casted high-strength high-toughness cast steel which is characterized by being prepared from the following components in percentage by weight: 0.19-0.21% of C, 0,42-0.44% of Si, 1.10-1.20% of Mn, less than or equal to 0.02% of S and P, 0.16-0.19% of Cr, 0.03-0.04% of Ti, 1.8-2.2% of Ni, 0.18-0.22% of Mo, 0.07-0.15% of V and the balance of Fe. Compared with the prior art, the cast steel has the advantages of high strength and high toughness.
Description
Technical field
The present invention relates to a kind of precision casting high-strength and high ductility cast steel.
Background technology
Steel casting occupies critical role at vehicle component, and be widely used in the part manufacturing carry load, along with the growth requirement of " vehicle lightness ", and weight-carrying capacity constantly increases and decreases, people require to improve to conveying efficiency and security aspect, therefore the stressed steel casting performance issue of vehicle also becomes increasingly conspicuous.
In order to adapt to the development of transport undertaking, low-alloy high-strength and high-toughness cast steel must be adopted to manufacture some vehicle component, in order to improve the fracture toughness property of material, resistance to cold shortness, antifatigue and wear resistance, therefore promote and adopt low-alloy high-strength and high-toughness steel casting, to improve vehicle use properties, have great importance.
Also there is no a kind of precision casting high-strength and high ductility cast steel being specially applied to vehicle component now.
Summary of the invention
In order to overcome above-mentioned shortcoming, the invention provides a kind of precision casting high-strength and high ductility cast steel, the present invention adopts new element formula, reaches the requirement of high strength, high tenacity.
For achieving the above object, the technical program is as follows:
A kind of precision casting high-strength and high ductility cast steel, comprise following component, and percentage composition is C:0.19-0.21, Si:0.42-0.44, Mn:1.10-1.20, S, P≤0.02, Cr:0.16-0.19, Ti:0.03 ~ 0.04, Ni:1.8-2.2, Mo:0.18-0.22, V:0.07 ~ 0.15; Surplus is Fe.
Further, component percentages is C:0.20-0.21, Si:0.42-0.43, Mn:1.20, S, P≤0.02, Cr:0.17-0.19, Ti:0.03 ~ 0.04, Ni:1.9-2.0, Mo:0.20-0.22, V:0.09 ~ 0.12; Surplus is Fe.
Further, component percentages is C:0.21, Si:0.43, Mn:1.10, S, P≤0.02, Cr:0.17, Ti:0.032, Ni:1.9, Mo:0.19, V:0.09; Surplus is Fe.
Principle of work of the present invention and working process as follows:
(1) carbon (C): its content has larger impact to the hardness of cast steel, wear resistance, over-all properties and hardenability.When content is low, fusing point is high, poor fluidity, oxidizable, have hot cracking tendency, though impelling strength is good, hardenability is not high, thus hardness low, wear no resistance, otherwise hardenability is high, and impelling strength is low, easily cracks and disconnected phenomenon of quenching.
(2) silicon (Si): the yield ratio improving material, and play solution strengthening and improve the firm effect obtaining temper resistance, but work as silicomanganese chromium proportioning not at that time, easily crack, when silicone content is too high, impelling strength reduces.
(3) chromium (Cr): one of the chief elements, have solution strengthening, improve the hardening capacity of steel, increase the effects such as steel belt roof bolt stability, in order to control the cost of steel, chromium content controls within 2% scope.
(4) molybdenum (Mo): improve firm hardening capacity, improves the intensity of steel, hardness and temper resistance, can improve the alloying element proportioning of hardening capacity with Cr, Mn, Si etc.
(5) manganese (Mn) one of the chief elements, has stronger desulfurization, the ability of deoxidation, improves the hardening capacity of steel.
The present invention has the following advantages:
(1) low-alloy cast steel alloy content is low, composition easy and can accurately control.
(2) this material good combination property, can adjust C, Cr, Mn content to obtain the good combination of hardness and toughness, to meet different service requirementss, obtains best mechanical property.
(3) low-alloy cast steel part is compared with traditional straight carbon steel cast member, and low-alloy cast steel has all very high mechanical property of intensity, plasticity and toughness.
Embodiment
The correlation technique content do not addressed below all can adopt or use for reference prior art.
Cast steel grade of steel and chemical component table
Table: the mechanical property of foundry goods
The above is only the preferred implementation of the application, those skilled in the art is understood or realizes the application.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. a precision casting high-strength and high ductility cast steel, it is characterized in that: comprise following component, and percentage composition is C:0.19-0.21, Si:0.42-0.44, Mn:1.10-1.20, S, P≤0.02, Cr:0.16-0.19, Ti:0.03 ~ 0.04, Ni:1.8-2.2, Mo:0.18-0.22, V:0.07 ~ 0.15; Surplus is Fe.
2. precision casting high-strength and high ductility cast steel according to claim 1, is characterized in that: component percentages is C:0.20-0.21, Si:0.42-0.43, Mn:1.20, S, P≤0.02, Cr:0.17-0.19, Ti:0.03 ~ 0.04, Ni:1.9-2.0, Mo:0.20-0.22, V:0.09 ~ 0.12; Surplus is Fe.
3. precision casting high-strength and high ductility cast steel according to claim 1 and 2, is characterized in that: component percentages is C:0.21, Si:0.43, Mn:1.10, S, P≤0.02, Cr:0.17, Ti:0.032, Ni:1.9, Mo:0.19, V:0.09; Surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288002.5A CN104233102A (en) | 2014-06-25 | 2014-06-25 | Precisely casted high-strength high-toughness cast steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288002.5A CN104233102A (en) | 2014-06-25 | 2014-06-25 | Precisely casted high-strength high-toughness cast steel |
Publications (1)
| Publication Number | Publication Date |
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| CN104233102A true CN104233102A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410288002.5A Pending CN104233102A (en) | 2014-06-25 | 2014-06-25 | Precisely casted high-strength high-toughness cast steel |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943853A (en) * | 1982-09-07 | 1984-03-12 | Kubota Ltd | High tension cast steel for centrifugal casting |
| SU1712455A1 (en) * | 1990-01-05 | 1992-02-15 | Белорусский Политехнический Институт | Cast steel for dies |
| EP0580062A1 (en) * | 1992-07-21 | 1994-01-26 | Thyssen Stahl Aktiengesellschaft | Process for manufacturing of thick armour plates |
| CN1228383A (en) * | 1998-02-27 | 1999-09-15 | 张景辉 | Integral steel-casting middle groove with loading-unloading connecting pin |
| CN102517516A (en) * | 2011-12-19 | 2012-06-27 | 张家港市鼎力铸钢有限公司 | Composite microalloyed high impact energy cast steel and manufacturing method thereof |
| CN102549187A (en) * | 2009-09-25 | 2012-07-04 | 株式会社日本制钢所 | High-strength high-toughness cast steel material and manufacturing method therefor |
-
2014
- 2014-06-25 CN CN201410288002.5A patent/CN104233102A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943853A (en) * | 1982-09-07 | 1984-03-12 | Kubota Ltd | High tension cast steel for centrifugal casting |
| SU1712455A1 (en) * | 1990-01-05 | 1992-02-15 | Белорусский Политехнический Институт | Cast steel for dies |
| EP0580062A1 (en) * | 1992-07-21 | 1994-01-26 | Thyssen Stahl Aktiengesellschaft | Process for manufacturing of thick armour plates |
| CN1228383A (en) * | 1998-02-27 | 1999-09-15 | 张景辉 | Integral steel-casting middle groove with loading-unloading connecting pin |
| CN102549187A (en) * | 2009-09-25 | 2012-07-04 | 株式会社日本制钢所 | High-strength high-toughness cast steel material and manufacturing method therefor |
| CN102517516A (en) * | 2011-12-19 | 2012-06-27 | 张家港市鼎力铸钢有限公司 | Composite microalloyed high impact energy cast steel and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 朱志强等: "《刚分析化学与物理检测》", 30 June 2013, 冶金工业出版社, article "镍在钢中的作用", pages: 11-12 * |
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Application publication date: 20141224 |