CN103509998A - Improved carbon steel and preparation technology thereof - Google Patents
Improved carbon steel and preparation technology thereof Download PDFInfo
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- CN103509998A CN103509998A CN201310447674.1A CN201310447674A CN103509998A CN 103509998 A CN103509998 A CN 103509998A CN 201310447674 A CN201310447674 A CN 201310447674A CN 103509998 A CN103509998 A CN 103509998A
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Abstract
The invention discloses an improved carbon steel. The carbon steel is prepared from the following substances: 2-3% of carbon, 0.5-0.8% of silicon, 0.6-1% of manganese, 0.3-0.4% of phosphorus, 5-8% of aluminum, 0.3-0.7% of auxiliary, and the balance of iron. The invention further provides a preparation technology of the improved carbon steel. The benefits are as follows: the improved carbon steel and the preparation technology can effectively reduce the carbon steel defects generated in the production process; proved by experiments in the factory, as the production is carried out according to the proportion and the preparation technology provided by the invention, scabbing rate, crack rate, fish eye rate, segregation rate and loosening rate of the carbon steel are reduced by 50-60% on average.
Description
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Technical field
The present invention relates to Iron and Steel Production field, be specifically related to a kind of improvement carbon steel and preparation technology thereof.
Background technology
Carbon steel be in the modern industry, use the earliest, the basic material of consumption maximum.The proportion of the output of current carbon steel in various countries' steel ultimate production, approximately remain on 80% left and right, it is not only widely used in building, bridge, railway, vehicle, boats and ships and various machine building industry, and at aspects such as the petrochemical industry in modern age, ocean exploitation, is also used in a large number.Traditional carbon steel production technique, easily produce carbon steel defect (defect of carbon steel), refer to that carbon steel is in smelting and rolling (forging) course of processing, because the reasons such as equipment, technique and operation cause the shortcoming of steel, mainly comprise scab, crackle, shrinking hole remnant, layering, white point, segregation, nonmetal inclusion, loose and banded structure etc.
Summary of the invention
Object of the present invention is exactly for above-mentioned defect of the prior art, and a kind of improvement carbon steel and preparation technology thereof that can reduce carbon steel ratio of defects is provided.
To achieve these goals, technical scheme provided by the invention is: a kind of improvement carbon steel, is comprised of the material of following content: carbon 2%-3%, silicon 0.5%-0.8%, manganese 0.6%-1%, phosphorus 0.3%-0.4%, aluminium 5%-8%, auxiliary agent 0.3%-0.7%, iron surplus.
Further, above-mentioned a kind of improvement carbon steel, described auxiliary agent is that silicon molybdenum powder and ferric oxide make so that mass ratio 1:1.5 is composite.
Further, above-mentioned a kind of improvement carbon steel, is comprised of the material of following content: carbon 2.5%, silicon 0.6%, manganese 0.8%, phosphorus 0.35%, aluminium 7%, auxiliary agent 0.5%, iron surplus.
Second object of the present invention has been to provide above-mentioned a kind of preparation technology who improves carbon steel, comprises the following steps:
1) pure iron is molten into after molten iron, first adds auxiliary agent, and cooling, obtain the solid pure iron that contains auxiliary agent;
2) the solid pure iron that obtains in step 1) containing auxiliary agent is molten into molten iron again, and to control temperature be 1550 ℃-1600 ℃, add in proportion successively carbon, silicon, manganese, and again cooling, obtain just mixed carbon steel;
3) by step 2) the first mixed carbon steel that obtains is molten into after liquid state, then add phosphorus in proportion, aluminium, obtain improveing carbon steel after cooling.
Beneficial effect of the present invention is: a kind of improvement carbon steel provided by the invention and preparation technology thereof, can effectively reduce the carbon steel defect producing in production process, through plant experiment, prove, adopt proportioning provided by the invention and preparation technology to produce, the rate that scabs, crackle rate, white point rate, segregation rate and loose rate have on average reduced 50%-60%.
Embodiment
embodiment 1:
A carbon steel, is comprised of the material of following content: carbon 2%, and silicon 0.5%, manganese 0.6%, phosphorus 0.3%, aluminium 5%-8%, silicon molybdenum powder and ferric oxide mixture 0.3%, iron surplus, wherein the blending ratio of silicon molybdenum powder and ferric oxide is 1:1.5.
Above-mentioned a kind of preparation technology who improves carbon steel, comprises the following steps:
1) pure iron is molten into after molten iron, first adds auxiliary agent, and cooling, obtain the solid pure iron that contains auxiliary agent;
2) the solid pure iron that obtains in step 1) containing auxiliary agent is molten into molten iron again, and to control temperature be 1550 ℃, add in proportion successively carbon, silicon, manganese, and again cooling, obtain just mixed carbon steel;
3) by step 2) the first mixed carbon steel that obtains is molten into after liquid state, then add phosphorus in proportion, aluminium, obtain improveing carbon steel after cooling.
embodiment 2:
A carbon steel, is comprised of the material of following content: carbon 3%, and silicon 0.8%, manganese 1%, phosphorus 0.4%, aluminium 8%, silicon molybdenum powder and ferric oxide mixture 0.7%, iron surplus, wherein the blending ratio of silicon molybdenum powder and ferric oxide is 1:1.5.
Above-mentioned a kind of preparation technology who improves carbon steel, comprises the following steps:
1) pure iron is molten into after molten iron, first adds auxiliary agent, and cooling, obtain the solid pure iron that contains auxiliary agent;
2) the solid pure iron that obtains in step 1) containing auxiliary agent is molten into molten iron again, and to control temperature be 1600 ℃, add in proportion successively carbon, silicon, manganese, and again cooling, obtain just mixed carbon steel;
3) by step 2) the first mixed carbon steel that obtains is molten into after liquid state, then add phosphorus in proportion, aluminium, obtain improveing carbon steel after cooling.
embodiment 3:
A carbon steel, is comprised of the material of following content: carbon 2.5%, and silicon 0.6%, manganese 0.8%, phosphorus 0.35%, aluminium 7%, auxiliary agent 0.5%, iron surplus, wherein the blending ratio of silicon molybdenum powder and ferric oxide is 1:1.5.
Above-mentioned a kind of preparation technology who improves carbon steel, comprises the following steps:
1) pure iron is molten into after molten iron, first adds auxiliary agent, and cooling, obtain the solid pure iron that contains auxiliary agent;
2) the solid pure iron that obtains in step 1) containing auxiliary agent is molten into molten iron again, and to control temperature be 1580 ℃, add in proportion successively carbon, silicon, manganese, and again cooling, obtain just mixed carbon steel;
3) by step 2) the first mixed carbon steel that obtains is molten into after liquid state, then add phosphorus in proportion, aluminium, obtain improveing carbon steel after cooling.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. an improvement carbon steel, is characterized in that, consists of: carbon 2%-3%, silicon 0.5%-0.8%, manganese 0.6%-1%, phosphorus 0.3%-0.4%, aluminium 5%-8%, auxiliary agent 0.3%-0.7%, iron surplus the material of following content.
2. a kind of improvement carbon steel according to claim 1, is characterized in that, described auxiliary agent is that silicon molybdenum powder and ferric oxide make so that mass ratio 1:1.5 is composite.
3. a kind of improvement carbon steel according to claim 2, is characterized in that, consists of: carbon 2.5%, silicon 0.6%, manganese 0.8%, phosphorus 0.35%, aluminium 7%, auxiliary agent 0.5%, iron surplus the material of following content.
4. the arbitrary described a kind of preparation technology who improves carbon steel of claim 1-3, is characterized in that, comprises the following steps:
1) pure iron is molten into after molten iron, first adds auxiliary agent, and cooling, obtain the solid pure iron that contains auxiliary agent;
2) the solid pure iron that obtains in step 1) containing auxiliary agent is molten into molten iron again, and to control temperature be 1550 ℃-1600 ℃, add in proportion successively carbon, silicon, manganese, and again cooling, obtain just mixed carbon steel;
3) by step 2) the first mixed carbon steel that obtains is molten into after liquid state, then add phosphorus in proportion, aluminium, obtain improveing carbon steel after cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447674.1A CN103509998A (en) | 2013-09-27 | 2013-09-27 | Improved carbon steel and preparation technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447674.1A CN103509998A (en) | 2013-09-27 | 2013-09-27 | Improved carbon steel and preparation technology thereof |
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| CN103509998A true CN103509998A (en) | 2014-01-15 |
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| CN201310447674.1A Pending CN103509998A (en) | 2013-09-27 | 2013-09-27 | Improved carbon steel and preparation technology thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090213A (en) * | 2016-08-18 | 2016-11-09 | 吴翠莲 | A kind of novel pressure container |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1758706A1 (en) * | 1968-07-25 | 1972-02-10 | Huettenwerk Oberhausen Ag | Use of steel iron as a factory sump for steel mill molds |
| JPH11236852A (en) * | 1998-02-20 | 1999-08-31 | Kubota Corp | Large diesel engine liner |
| CN1282799A (en) * | 2000-08-29 | 2001-02-07 | 宝山钢铁股份有限公司 | High-Cr cast steel grate and its manufacture method |
| JP2010105022A (en) * | 2008-10-30 | 2010-05-13 | Hiroshima Prefecture | Surface-modified steel and precision casting method for casting having modified surface |
-
2013
- 2013-09-27 CN CN201310447674.1A patent/CN103509998A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1758706A1 (en) * | 1968-07-25 | 1972-02-10 | Huettenwerk Oberhausen Ag | Use of steel iron as a factory sump for steel mill molds |
| JPH11236852A (en) * | 1998-02-20 | 1999-08-31 | Kubota Corp | Large diesel engine liner |
| CN1282799A (en) * | 2000-08-29 | 2001-02-07 | 宝山钢铁股份有限公司 | High-Cr cast steel grate and its manufacture method |
| JP2010105022A (en) * | 2008-10-30 | 2010-05-13 | Hiroshima Prefecture | Surface-modified steel and precision casting method for casting having modified surface |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090213A (en) * | 2016-08-18 | 2016-11-09 | 吴翠莲 | A kind of novel pressure container |
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Application publication date: 20140115 |