CN100420766C - Cast steel and method for preparing same - Google Patents
Cast steel and method for preparing same Download PDFInfo
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- CN100420766C CN100420766C CNB2007100133041A CN200710013304A CN100420766C CN 100420766 C CN100420766 C CN 100420766C CN B2007100133041 A CNB2007100133041 A CN B2007100133041A CN 200710013304 A CN200710013304 A CN 200710013304A CN 100420766 C CN100420766 C CN 100420766C
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Abstract
The invention discloses a cast steel and making method, which comprises the following parts: 0.18-0.22% C, 0.30-0.60% Si, 0.90-1.25% Mn, 0.48-0.55% Ni, 0.10-0.25% Cr, not more than 0.10% Mo, not more than 0.040% P, not more than 0.040% S and Fe (0.42-0.48% C). The making method comprises the following steps: 1. allocating; 2. fusing; 3. casting; 4. normalizing. The invention possesses high-strength and high-extending rate, which is fit for casting steel case.
Description
(1) technical field
The present invention relates to the preparation method of cast steel and this cast steel of a kind of cast steel, particularly a kind of high-strength high-elongation ratio.
(2) background technology
In recent years along with the requirement of social development, all kinds of engineerings with car particularly heavy-duty tipper must adapt to the severe condition of large-tonnage, road conditions difference.Especially more and more higher to the requirement of axle housing.Automobile axle housing all adopts press axle housing at present, this kind axle housing easily deforms under the bigger situation of shock load, leakage of oil, do not satisfy market demands, therefore need to adopt a kind of welded axle housing, the cast steel that exists should not be made welded axle housing at present, because present cast steel intensity and unit elongation are low.
(3) summary of the invention
The technical problem to be solved in the present invention is: a kind of cast steel of high-strength high-elongation ratio is provided, and the preparation method of this cast steel.
In order to solve the problems of the technologies described above:
Cast steel of the present invention comprises the chemical ingredients of following weight percent: C:0.18-0.22%, Si:0.30-0.60%, Mn:0.90-1.25%, Ni:0.48-0.55%, Cr:0.10-0.25%, Mo≤0.10%, P≤0.040%, S :≤0.040%, surplus is an iron, carbon equivalent is 0.42-0.48%.
In order to obtain mechanical property preferably, described C:0.21%, Si:0.42%, Mn:1.06%, Ni:0.49%, Cr:0.16%, Mo:0.04%, P=0.023%, S=0.020%, carbon equivalent is 0.458%.
In order to obtain mechanical property preferably, described C:0.19%, Si:0.40%, Mn:1.10%, Ni:0.48%, Cr:0.12%, Mo:0.04%, P=0.026%, S=0.022%, carbon equivalent is 0.436%.
Cast steel preparation method of the present invention comprises the steps: 1, according to given chemical ingredients scope, with steel scrap and pig iron batching; 2, the material for preparing is packed into carry out melting in the electric arc furnace, add ferrosilicon, ferromanganese, electrolytic nickel, ferrochrome in the fusion process and adjust chemical ingredients; 3, the pouring molten steel that melting is obtained becomes foundry goods; 4, normalizing treatment.
The invention has the beneficial effects as follows: cast steel of the present invention has high-strength high-elongation ratio, and after the process normalizing treatment, its mechanical property is σ
b〉=550Mpa, σ
s〉=355Mpa, δ 〉=18%, Brinell hardness HB 〉=160; This cast steel is suitable makes welded cast steel axle housing, can satisfy the heavy-duty tipper vehicle bridge and be hit load than the performance requriements that does not have distortion, non-cracking greatly.
(4) embodiment
Specific embodiment 1
This specific embodiment is a kind of cast steel, comprises the chemical ingredients of following weight percent: C:0.21%, Si:0.42%, Mn:1.06%, Ni:0.49%, Cr:0.16%, Mo:0.04%, P=0.023%, S=0.020%, surplus is an iron, carbon equivalent is 0.458%.
The preparation method of this specific embodiment low-alloy cast steel is: comprise the steps: 1, according to given chemical ingredients scope, with steel scrap and pig iron batching; 2, the material for preparing is packed into carry out melting in the electric arc furnace, add ferrosilicon, ferromanganese, electrolytic nickel, ferrochrome in the fusion process and adjust chemical ingredients; 3, the pouring molten steel that melting is obtained becomes foundry goods; 4, normalizing treatment.Measure, its mechanical property is: σ
b=576Mpa, σ
s=371Mpa, δ=19.8%, Brinell hardness HB=171.
Specific embodiment 2
This specific embodiment is a kind of cast steel, comprises the chemical ingredients of following weight percent: C:0.19%, Si:0.40%, Mn:1.10%, Ni:0.48%, Cr:0.12%, Mo:0.04%, P=0.026%, S=0.022%, surplus is an iron, carbon equivalent is 0.436%.
The preparation method of this specific embodiment low-alloy cast steel is: comprise the steps: 1, according to given chemical ingredients scope, with steel scrap and pig iron batching; 2, the material for preparing is packed into carry out melting in the electric arc furnace, add ferrosilicon, ferromanganese, electrolytic nickel, ferrochrome in the fusion process and adjust chemical ingredients; 3, the pouring molten steel that melting is obtained becomes foundry goods; 4, normalizing treatment.Measure, its mechanical property is: σ
b=573Mpa, σ
s=375Mpa, δ=20.4%, Brinell hardness HB=166.
Claims (4)
1. cast steel, it is characterized in that: the chemical ingredients that comprises following weight percent: C:0.18-0.22%, Si:0.30-0.60%, Mn:0.90-1.25%, Ni:0.48-0.55%, Cr:0.10-0.25%, Mo≤0.10%, P≤0.040%, S :≤0.040%, surplus is an iron, and carbon equivalent is 0.42-0.48%.
2. cast steel according to claim 1 is characterized in that: described C:0.21%, and Si:0.42%, Mn:1.06%, Ni:0.49%, Cr:0.16%, Mo:0.04%, P=0.023%, S=0.020%, carbon equivalent is 0.458%.
3. cast steel according to claim 1 is characterized in that: described C:0.19%, and Si:0.40%, Mn:1.10%, Ni:0.48%, Cr:0.12%, Mo:0.04%, P=0.026%, S=0.022%, carbon equivalent is 0.436%.
4. according to claim 1,2 or 3 described cast steel preparation methods, it is characterized in that: comprise the steps: 1, according to given chemical ingredients scope, with steel scrap and pig iron batching; 2, the material for preparing is packed into carry out melting in the electric arc furnace, add ferrosilicon, ferromanganese, electrolytic nickel and four kinds of alloys of ferrochrome in the fusion process and adjust chemical ingredients; 3, the pouring molten steel that melting is obtained becomes foundry goods; 4, normalizing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100133041A CN100420766C (en) | 2007-01-24 | 2007-01-24 | Cast steel and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100133041A CN100420766C (en) | 2007-01-24 | 2007-01-24 | Cast steel and method for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101012529A CN101012529A (en) | 2007-08-08 |
| CN100420766C true CN100420766C (en) | 2008-09-24 |
Family
ID=38700256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100133041A Expired - Fee Related CN100420766C (en) | 2007-01-24 | 2007-01-24 | Cast steel and method for preparing same |
Country Status (1)
| Country | Link |
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| CN (1) | CN100420766C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845601B (en) * | 2009-03-26 | 2011-11-23 | 上海祝桥金属冲压延有限公司 | Ultrahigh strength cold rolled steel strip for automobile seat |
| CN103215510A (en) * | 2013-04-19 | 2013-07-24 | 龙岩盛丰机械制造有限公司 | Novel automobile axle housing and preparation method thereof |
| CN103882190B (en) * | 2014-04-04 | 2016-04-06 | 宁夏共享铸钢有限公司 | A kind of production method of steel casting |
| CN110229993A (en) * | 2019-07-04 | 2019-09-13 | 常州市常林永青铸造有限公司 | A kind of room temperature welded cast steel and preparation method thereof |
| CN110484695B (en) * | 2019-09-16 | 2021-03-26 | 益阳紫荆福利铸业有限公司 | Cast steel for welded structure and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6442555A (en) * | 1987-08-11 | 1989-02-14 | Kawasaki Steel Co | C-mn-type cast steel for low temperature use |
| JPH09324240A (en) * | 1996-06-04 | 1997-12-16 | Kawasaki Heavy Ind Ltd | Cast steel article for welding structure and its production |
| CN1333840A (en) * | 1999-01-28 | 2002-01-30 | 巴克伊铸钢公司 | Cast steel composition for railway components |
| JP2004018944A (en) * | 2002-06-17 | 2004-01-22 | Kobe Steel Ltd | Cast steel |
-
2007
- 2007-01-24 CN CNB2007100133041A patent/CN100420766C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6442555A (en) * | 1987-08-11 | 1989-02-14 | Kawasaki Steel Co | C-mn-type cast steel for low temperature use |
| JPH09324240A (en) * | 1996-06-04 | 1997-12-16 | Kawasaki Heavy Ind Ltd | Cast steel article for welding structure and its production |
| CN1333840A (en) * | 1999-01-28 | 2002-01-30 | 巴克伊铸钢公司 | Cast steel composition for railway components |
| JP2004018944A (en) * | 2002-06-17 | 2004-01-22 | Kobe Steel Ltd | Cast steel |
Non-Patent Citations (2)
| Title |
|---|
| 铸铁磨球. 徐永明，章舟.铸造技术，第4期. 2005 |
| 铸铁磨球. 徐永明，章舟.铸造技术，第4期. 2005 * |
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| Publication number | Publication date |
|---|---|
| CN101012529A (en) | 2007-08-08 |
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