CN102353759B - The characterization processes of micro-bubble in producing stainless steel process - Google Patents
The characterization processes of micro-bubble in producing stainless steel process Download PDFInfo
- Publication number
- CN102353759B CN102353759B CN201110293722.7A CN201110293722A CN102353759B CN 102353759 B CN102353759 B CN 102353759B CN 201110293722 A CN201110293722 A CN 201110293722A CN 102353759 B CN102353759 B CN 102353759B
- Authority
- CN
- China
- Prior art keywords
- sample
- bubble
- micro
- processing
- stove
- 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.)
- Active
Links
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses the characterization processes of micro-bubble in a kind of producing stainless steel process; Comprise following process: 1) sample: comprise the final sample of the smelting of smelting furnace, continuous casting production sample, continuous casting billet sample; 2) sample cutting processing: sample meets continuous casting steel billet dimension scale specification after cutting machine processing, and machined surface roughness is about Ra0.8; 3) Technology for Heating Processing: the sample after processing adopts heat-treatment furnace to be warming up to this steel grade conventional plate blank heating-up temperature with stove, comes out of the stove after insulation 60min-160min; 4) forging rolling or forge, process: thermal treatment come out of the stove after sample carry out forging rolling rapidly or hammering forges, target thickness rate of change is near this steel grade hot rolled plate distortion ratio; 5) sample tissue analysis detects: carry out gas content detection after sample forges, after processing respectively, metallographic structure analysis detects, electro microscope energy spectrum analysis, determine gas content, determine micro-bubble area content and distributing position; There is inspection cost low; Be convenient to take corresponding control measure in time.
Description
Technical field
The present invention relates to stainless steel technical field, particularly relate to the characterization processes of micro-bubble in producing stainless steel process.
Background technology
Micro-bubble in steel belongs to the harm of smelting defect and is difficult to comparatively greatly remove, current employing AOD, exist all in various degree during the refining furnace smelting stainless steels such as GOR, in production, working control is more difficult, the micro-bubble very fine width about 2 μm of general indication, length 10 μm-200 μm after hot rolling, micro-bubble can make stainless steel hot-rolling plate material surface and matrix place leave some micropores or micro-crack source and skin effect phenomenon, the continuity of matrix can be destroyed, the plasticity of serious reduction material, work hardening is met in cold-rolled process, genetic defects position can be made to produce stress concentrate, micro-bubble can be made to run through and Crack Extension occurs, concentrate when stress and exceeded its fracture strength of material and just there will be cracking, micro-bubble distribution position in material, quantity is different, it is different that crackle produces the order of severity.Bubble link is produced more in stainless steel, concentrate in continuous casting billet and embody, because current detection means and instrument and equipment accurately can not detect the kind of gas in bubble, analytical gas total amount can only be detected, but can not accurately define number of bubbles, generation operation, area fraction, accurately can not detect the kind and content of analyzing bubble in steel, bring obstacle to production control.In addition due to the singularity that stainless steel smelting is produced, adopting kinds of gas sources medium in blowing process (oxidation, reduction period), refining and casting process, further increasing the identification of bubble and the difficulty of detection as controlled shakiness.The following defect that prior art exists: accurately can not define number of bubbles, generation operation, area fraction in time, accurately can not detect the kind and content of analyzing bubble in steel, bring obstacle to production control.
Summary of the invention
The present invention can not accurately define number of bubbles, generation operation, area fraction in time for solving prior art exactly, accurately can not detect and analyze the kind of bubble and the problem of content in steel; The characterization processes of micro-bubble in a kind of producing stainless steel process is provided; Inspection cost is low, energy rapid field detects micro-bubble existence in austenitic stainless steel concrete period, quantity.
To achieve these goals, the present invention adopts following technical scheme:
A characterization processes for micro-bubble in producing stainless steel process, comprises following process:
1) sample: comprise the final sample of the smelting of smelting furnace, continuous casting production sample, continuous casting billet sample;
2) sample cutting processing: sample meets continuous casting steel billet dimension scale specification after cutting machine processing, and machined surface roughness is about Ra0.8;
3) Technology for Heating Processing: the sample after processing adopts heat-treatment furnace to be warming up to this steel grade conventional plate blank heating-up temperature with stove, comes out of the stove after insulation 60min-160min;
4) forging rolling or forge, process: thermal treatment come out of the stove after sample carry out forging rolling rapidly or hammering forges, target thickness rate of change is near this steel grade hot rolled plate distortion ratio;
5) sample tissue analysis detects: carry out gas content detection after sample forges, after processing respectively, metallographic structure analysis detects, electro microscope energy spectrum analysis, determine gas content, determine micro-bubble area content and distributing position;
Electric furnace selected by described smelting furnace, GOR stove, AOD furnace, any one in LF stove.
Described sampling process adopts special original mold to get full-page proof block, adopts vacuum sampler to get sample block and gas sample.
Beneficial effect of the present invention: due to the characterization processes of bubble micro-in producing stainless steel process of the present invention, comprise sampling, sample cutting processing, Technology for Heating Processing, forging rolling or forge, process, sample tissue analyte detection process.In conjunction with produced on-site Controlling Technology in production run, find micro-number of bubbles, present situation, length and gas content according to each operation section, coordinate all operation section investigations of structural state all operations section to get rid of, specify concrete process links, node that micro-bubble produces.Formulate process modification measure field conduct according to problem points, final analysis detects hot rolled plate checking implementation result, offers reference for process control parameter in production run improves and rectifies and improves revision foundation; Air feed consumption, gas supply flow, supply gas pressure (partial pressure), the service life of existing blowing distribution system and blanket gas can be optimized according to testing result, can coordinate stainless steel smelting AOD furnace, GOR stove etc. refining furnace (top) is low and blow distribution computation model research and apply.Therefore of the present invention have following effect:
1) inspection cost is low;
2) energy rapid field detects concrete period, the quantity of micro-bubble existence in austenitic stainless steel, is convenient to search reason in time, countermeasure analysis, takes corresponding control measure in time.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated:
A characterization processes for micro-bubble in producing stainless steel process, comprises following process:
1) sample: comprise the final sample of the smelting of smelting furnace, continuous casting production sample, continuous casting billet sample; Electric furnace selected by described smelting furnace, GOR stove, AOD furnace, any one in LF stove; Described sampling process adopts special original mold to get full-page proof block, adopts vacuum sampler to get sample block and gas sample;
2) sample cutting processing: sample meets continuous casting steel billet dimension scale specification after cutting machine processing, and machined surface roughness is about Ra0.8;
3) Technology for Heating Processing: the sample after processing adopts heat-treatment furnace to be warming up to this steel grade conventional plate blank heating-up temperature with stove, comes out of the stove after insulation 60min mono-160min;
4) forging rolling or forge processing: thermal treatment come out of the stove after sample carry out forging rolling rapidly or hammering forges, target thickness rate of change is near this steel grade hot rolled plate distortion ratio;
5) sample tissue analysis detects: carry out gas content detection after sample forges, after processing respectively, metallographic structure analysis detects, electro microscope energy spectrum analysis, determine gas content, determine micro-bubble area content and distributing position.
Claims (3)
1. the characterization processes of micro-bubble in producing stainless steel process, comprises following process:
1) sample: the final sample of smelting comprising smelting furnace, continuous casting production sample, continuous casting billet sample;
2) sample cutting processing: sample meets continuous casting steel billet dimension scale specification after cutting machine processing, and machined surface roughness is about Ra0.8;
3) Technology for Heating Processing: the sample after processing is warming up to this steel grade conventional plate blank heating-up temperature with heat-treatment furnace, comes out of the stove after insulation 60min-160min;
4) forging rolling or forge, process: thermal treatment come out of the stove after sample carry out forging rolling rapidly or hammering forges, target thickness rate of change is near this steel grade hot rolled plate distortion ratio;
5) sample tissue analysis detects: carry out gas content detection after sample forges, after processing respectively, metallographic structure analysis detects, electro microscope energy spectrum analysis, determine gas content, determine micro-bubble area content and distributing position.
2. the characterization processes of micro-bubble in producing stainless steel process as claimed in claim 1, it is characterized in that, electric furnace selected by described smelting furnace, GOR stove, AOD furnace, any one in LF stove.
3. the characterization processes of micro-bubble in producing stainless steel process as claimed in claim 1, it is characterized in that, described sampling process adopts special original mold to get full-page proof block, adopts vacuum sampler to get sample block and gas sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110293722.7A CN102353759B (en) | 2011-09-30 | 2011-09-30 | The characterization processes of micro-bubble in producing stainless steel process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110293722.7A CN102353759B (en) | 2011-09-30 | 2011-09-30 | The characterization processes of micro-bubble in producing stainless steel process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102353759A CN102353759A (en) | 2012-02-15 |
| CN102353759B true CN102353759B (en) | 2015-10-21 |
Family
ID=45577362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110293722.7A Active CN102353759B (en) | 2011-09-30 | 2011-09-30 | The characterization processes of micro-bubble in producing stainless steel process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102353759B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372734A (en) * | 2007-08-24 | 2009-02-25 | 宝山钢铁股份有限公司 | Martensite stainless steel and manufacturing method thereof |
| CN101482551A (en) * | 2008-01-07 | 2009-07-15 | 项楠 | Detection method for spheroidization rate in nickelic austenite ductile cast iron valve-stem nut production course |
| CN101974721A (en) * | 2010-10-29 | 2011-02-16 | 河北钢铁股份有限公司唐山分公司 | Process for producing medium and high carbon steel in sheet billet continuous casting and rolling production |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3201697B2 (en) * | 1994-04-19 | 2001-08-27 | 川崎製鉄株式会社 | Slab quality judgment processing method in synchronized operation of continuous casting and hot rolling process |
| JP3616463B2 (en) * | 1996-08-19 | 2005-02-02 | 新日本製鐵株式会社 | Rapid discrimination method for inclusions in steel |
| JP2010025835A (en) * | 2008-07-23 | 2010-02-04 | Jfe Steel Corp | Acceptance decision method of steel strip |
-
2011
- 2011-09-30 CN CN201110293722.7A patent/CN102353759B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372734A (en) * | 2007-08-24 | 2009-02-25 | 宝山钢铁股份有限公司 | Martensite stainless steel and manufacturing method thereof |
| CN101482551A (en) * | 2008-01-07 | 2009-07-15 | 项楠 | Detection method for spheroidization rate in nickelic austenite ductile cast iron valve-stem nut production course |
| CN101974721A (en) * | 2010-10-29 | 2011-02-16 | 河北钢铁股份有限公司唐山分公司 | Process for producing medium and high carbon steel in sheet billet continuous casting and rolling production |
Non-Patent Citations (6)
| Title |
|---|
| 37CrNiMo钢铸炮帽皮下气泡的研究;姜锡山;《兵器材料科学与工程》;19940331;第17卷(第2期);第66-70页 * |
| Inclusions in Continuous Casting of Steel;L. F. Zhang等;《XXIV National Steelmaking Symposium》;20031130;第26-28卷;第138-183页 * |
| 承压设备用钢板的表面裂纹分析;张爱民等;《宽厚板》;20090228;第15卷(第1期);第31-33页 * |
| 本钢连铸板坯质量评价及改善措施;陶立群等;《中国冶金》;20060731;第16卷(第7期);第16-18页 * |
| 试样质量对气体检测结果的影响;李金波等;《2012年全国炼钢-连铸生产技术会议论文集》;20120716;第949-954页 * |
| 连铸坯表面气孔缺陷研究;耿明山等;《钢铁》;20100131;第45卷(第1期);第46-50页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102353759A (en) | 2012-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102615478B (en) | Forging process of wind power main shaft | |
| CN101788438B (en) | Experimental method for measuring harden ability of large-sized aluminium alloy | |
| CN103983506A (en) | Method for detecting texture performance of thermal simulation experiment material | |
| CN104807667A (en) | Analytical sampling and analytical method for failure of H-section steel | |
| CN104878177A (en) | Rolling technique capable of lowering depeth of steel rail decarburized layer | |
| CN112662846A (en) | 20CrMnMo open gear, detection method thereof and heat treatment method for reducing blank forging cracks | |
| CN102268518A (en) | Test method for heating and decarburization of continuous casting blank of high carbon steel | |
| CN105710264A (en) | Process for forging forge piece by adopting additional forced cooling conical plate upsetting method | |
| CN102010963B (en) | Method for effectively controlling medium plate detection defects | |
| CN105548235A (en) | Test method for accurate determination of optimal heat treatment process for pearlitic steel rail | |
| CN112948986A (en) | Titanium alloy forging process parameter optimization method combined with finite element numerical simulation program | |
| CN105215242B (en) | Method for forging concavity mold cavity module | |
| CN102628858B (en) | Method for analyzing internal defects of large forge piece | |
| CN102353759B (en) | The characterization processes of micro-bubble in producing stainless steel process | |
| CN112784367A (en) | Method for calculating thickness of blank shell at position of continuous casting roller row and solidification tail end of casting machine | |
| CN104451100A (en) | Heat treatment method of seamless steel pipe | |
| CN104899416B (en) | A kind of prediction technique and its system of the anti-lamellar tearing performance of Steels for High Rise Buildings | |
| CN113960163A (en) | Inspection and analysis method for heat treatment cracks of 30CrMo valve body | |
| CN109239079A (en) | The method of Hot Metal in Beam Blank production H profile steel web crackle and straightening cracks failure analysis | |
| CN105203383B (en) | A kind of fracture examination method of turning blue of simple possible | |
| CN104384191A (en) | Piercing and hot rolling production method for P92 ferrite heat-resistant seamless steel pipe | |
| CN104942004B (en) | The production method of ultra supercritical unit seamless steel pipe | |
| CN114354658A (en) | Material wedge cross rolling damage critical value evaluation method combining finite element simulation and experiment | |
| CN104155161B (en) | A kind of corrosion resistant alloy slab dissection and analysis method | |
| CN109794517B (en) | Strain control process for directly rolling square billet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200730 Granted publication date: 20151021 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230730 Granted publication date: 20151021 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230730 Granted publication date: 20151021 |