CN102181777B - Stainless steel 431 smelting method - Google Patents
Stainless steel 431 smelting method Download PDFInfo
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- CN102181777B CN102181777B CN2011100967868A CN201110096786A CN102181777B CN 102181777 B CN102181777 B CN 102181777B CN 2011100967868 A CN2011100967868 A CN 2011100967868A CN 201110096786 A CN201110096786 A CN 201110096786A CN 102181777 B CN102181777 B CN 102181777B
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- steel
- steel bowl
- bowl
- stainless steel
- cup
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a stainless steel 431 smelting method. An electric furnace+AOD (Argon Oxygen Decarburization) furnace smelting technology is adopted; after stainless steel is refined in the AOD furnace, a discharging steel cup is heated to 1600-1700DEG C; quenching solid dissolving is carried out; after the steel cup is stored in a storage for 90-150 days, the steel cup is reheated to 1350-1500DEG C; the steel cup is naturally cooled and is secondarily refined by a high-frequency machine; the discharging steel cup is reheated to 1350-1400DEG C; after the steel cup is subjected to quenching solid dissolving, surface processing is carried out; and the steel cup is stored in a storage for 30-60 days. After above treatment, impurity residues in the stainless steel can be greatly reduced, the quality and density distribution of the stainless steel is regulated, and stainless steel quality is improved.
Description
Technical field
The present invention relates to stainless steel smelting method, relate in particular to a kind of smelting process of stainless steel 431.
Background technology
At present, stainless smelting technology mainly is electric furnace+AOD stove, and furnace melting steel scrap, alloy and partial molten iron get into the AOD stove then and carry out refining.For stainless steel 431, adopt this process method to smelt, the steel impurity of producing is residual higher, and quality and density unevenness influence its hardness, thereby have influenced the quality of steel rolling greatly, and when using as particular component such as bearing, rotating shafts, the life-span is shorter.Therefore be necessary to develop the smelting process of new stainless steel 431, it is residual to reduce smelting impurity, the quality of stainless steel 431 after the raising refining.
Summary of the invention
For overcoming the prior art deficiency, the invention provides a kind of stainless steel 431 smelting processes, it is residual to be intended to reduce after the refining in the stainless steel impurity, improves the stainless steel quality.
For realizing the foregoing invention purpose, the technological method that the present invention adopts is:
A kind of smelting process of stainless steel 431, it adopts electric furnace+AOD stove smelting technology, and the steel bowl of wherein will coming out of the stove after the refining of AOD stove carries out following processing:
1. the steel bowl of will coming out of the stove is heated to 1600-1700 ℃, carries out the chilling solution treatment;
2. stress relieving: the steel bowl after the above-mentioned solution treatment is put into the warehouse deposited 90-150 days; After the completion steel bowl is heated to 1350-1400 ℃ once more, lets the steel bowl naturally cooling again;
3. High-frequency machine secondary refining: steel bowl is inverted is placed on the High-frequency machine, make the molten steel of steel bowl fusing get into punching block, form new steel bowl;
4. steel bowl in taking out 3. is heated to 1350-1400 ℃ once more, carries out the chilling solution treatment;
5. steel bowl in taking out 4. carries out surface working, puts into storehouse reservation 30-60 days.
Further, said step 1. and the chilling agent adopted of the chilling solution treatment 4. be that temperature is lower than 30 ℃ process water.
3. said step may further comprise the steps:
A) steel bowl is stood upside down, be placed on the anchor clamps of High-frequency machine port and clamp rim of a cup, steel bowl is raise, place punching block below;
B) power-on, steel bowl slowly melts, and control current intensity makes the fusing molten steel become to splash in the punching block, forms a new cast steel cup.
Compared with prior art; Beneficial effect of the present invention is to adopt the casting refining mode of dripping of new AOD stove+High-frequency machine; Steel bowl is carried out twice refining; Through step stress relieving 2., eliminate on the one hand the stress in the steel bowl, make that on the other hand crystal molecule and the arrangement of metallic molecule in the steel bowl further adjusted; Through the perfusion of dripping of step High-frequency machine reverse mould formula 3.; Form the new cast steel cup that drips of aliquation joint, accumulation of impurities is excised during surface treatment at mould mouth place easily in the steel bowl; Significantly reduced impurity in the steel bowl; Further adjust simultaneously the quality and the density distribution of steel bowl, its Rockwell hardness is evenly distributed, improved stainless quality after the refining greatly.
Embodiment
For ease of the present invention is further understood, combine specific embodiment to describe the present invention at present.
After thick refining of stainless steel iron charge process electric furnace and the refining of AOD stove, the steel bowl of coming out of the stove after the refining is further carried out following processing:
1. the steel bowl of will coming out of the stove is heated to 1600-1700 ℃, carries out the chilling solution treatment;
2. the steel bowl after the above-mentioned solution treatment being put into the warehouse deposited 90-150 days; After the completion steel bowl is heated to 1350-1400 ℃ once more, lets the steel bowl naturally cooling again;
3. High-frequency machine secondary refining:
A) steel bowl is stood upside down, be placed on the anchor clamps of High-frequency machine port and clamp rim of a cup, steel bowl is raise, place punching block below;
B) power-on, steel bowl slowly melts, and control current intensity makes the fusing molten steel become to splash in the punching block, forms a new cast steel cup;
4. steel bowl in taking out 3. is heated to 1350-1400 ℃ once more, carries out the chilling solution treatment;
5. steel bowl in taking out 4. carries out surface working, puts into storehouse reservation 30-60 days.
Claims (2)
1. the smelting process of a stainless steel 431, it adopts electric furnace+AOD stove smelting technology, it is characterized in that: the steel bowl of will coming out of the stove after the refining of AOD stove carries out following processing:
1. the steel bowl of will coming out of the stove is heated to 1600-1700 ℃, carries out the chilling solution treatment;
2. stress relieving: the steel bowl after the above-mentioned solution treatment is put into the warehouse deposited 90-150 days; After the completion steel bowl is heated to 1350-1400 ℃ once more, lets the steel bowl naturally cooling again;
3. High-frequency machine secondary refining: steel bowl is inverted is placed on the High-frequency machine, make the molten steel of steel bowl fusing get into punching block, form new steel bowl;
4. steel bowl in taking out 3. is heated to 1350-1400 ℃ once more, carries out the chilling solution treatment;
5. steel bowl in taking out 4. carries out surface working, puts into storehouse reservation 30-60 days.
2. the smelting process of a kind of stainless steel 431 according to claim 1 is characterized in that: 3. said step may further comprise the steps:
A) steel bowl is stood upside down, be placed on the anchor clamps of High-frequency machine port and clamp rim of a cup, steel bowl is raise, place punching block below;
B) power-on, steel bowl slowly melts, and control current intensity makes the fusing molten steel become to splash in the punching block, forms a new cast steel cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100967868A CN102181777B (en) | 2011-04-19 | 2011-04-19 | Stainless steel 431 smelting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100967868A CN102181777B (en) | 2011-04-19 | 2011-04-19 | Stainless steel 431 smelting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102181777A CN102181777A (en) | 2011-09-14 |
| CN102181777B true CN102181777B (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100967868A Expired - Fee Related CN102181777B (en) | 2011-04-19 | 2011-04-19 | Stainless steel 431 smelting method |
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| Country | Link |
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| CN (1) | CN102181777B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104909A (en) * | 2007-07-26 | 2008-01-16 | 俞荣新 | OOCr13Ni5Mo ultralow-carbon martensitic stainless steel and producing method thereof |
| CN101121995A (en) * | 2007-09-06 | 2008-02-13 | 朱育民 | Novel martensite system stainless steel material and its preparation method and application |
| CN101333625A (en) * | 2007-06-25 | 2008-12-31 | 宝山钢铁股份有限公司 | High temperature resistant and abrasion resistant martensitic stainless steel and preparation method |
| CN101538686A (en) * | 2008-03-21 | 2009-09-23 | 宝山钢铁股份有限公司 | Martensite precipitation hardening stainless steel for structural member and manufacturing method thereof |
| CN101638750A (en) * | 2008-07-28 | 2010-02-03 | 宝山钢铁股份有限公司 | Martensitic stainless steel for cutting tool and manufacturing method thereof |
| CN101812625A (en) * | 2010-04-21 | 2010-08-25 | 中国科学院金属研究所 | Smelting process of 1Cr13 stainless steel |
| CN101956146A (en) * | 2010-10-12 | 2011-01-26 | 西安建筑科技大学 | High strength super-martensitic stainless steel for oil and gas pipelines and preparation method thereof |
-
2011
- 2011-04-19 CN CN2011100967868A patent/CN102181777B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333625A (en) * | 2007-06-25 | 2008-12-31 | 宝山钢铁股份有限公司 | High temperature resistant and abrasion resistant martensitic stainless steel and preparation method |
| CN101104909A (en) * | 2007-07-26 | 2008-01-16 | 俞荣新 | OOCr13Ni5Mo ultralow-carbon martensitic stainless steel and producing method thereof |
| CN101121995A (en) * | 2007-09-06 | 2008-02-13 | 朱育民 | Novel martensite system stainless steel material and its preparation method and application |
| CN101538686A (en) * | 2008-03-21 | 2009-09-23 | 宝山钢铁股份有限公司 | Martensite precipitation hardening stainless steel for structural member and manufacturing method thereof |
| CN101638750A (en) * | 2008-07-28 | 2010-02-03 | 宝山钢铁股份有限公司 | Martensitic stainless steel for cutting tool and manufacturing method thereof |
| CN101812625A (en) * | 2010-04-21 | 2010-08-25 | 中国科学院金属研究所 | Smelting process of 1Cr13 stainless steel |
| CN101956146A (en) * | 2010-10-12 | 2011-01-26 | 西安建筑科技大学 | High strength super-martensitic stainless steel for oil and gas pipelines and preparation method thereof |
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| CN102181777A (en) | 2011-09-14 |
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