CN105675513A - Method for determining morphology of metal molten pool for electroslag remelting - Google Patents
Method for determining morphology of metal molten pool for electroslag remelting Download PDFInfo
- Publication number
- CN105675513A CN105675513A CN201610030636.XA CN201610030636A CN105675513A CN 105675513 A CN105675513 A CN 105675513A CN 201610030636 A CN201610030636 A CN 201610030636A CN 105675513 A CN105675513 A CN 105675513A
- Authority
- CN
- China
- Prior art keywords
- acidleach
- sample
- low power
- esr
- shape looks
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a method for determining morphology of a metal molten pool for electroslag remelting, and belongs to the field of metallurgical technology. The method for determining morphology of the metal molten pool for electroslag remelting comprises the following steps: (1) in a whole process of electroslag remelting, ferrous sulfide particles are uniformly added into a slag bath every 1.5-2.5 hours, sulfur content of the ferrous sulfide particles is 24-34%, diameter of the ferrous sulfide particle is 4-6mm, and addition is 140-200g/every time. (2) vertical dissection of an electroslag ingot is carried out by electroslag remelting, and a macroscopic acid dipping sample is prepared; (3) acid dipping macroscopic examination is carried out; (4) morphology of the surface to be detected of the macroscopic acid dipping sample is observed directly, morphology of the metal molten pool for electroslag remelting and morphology of a solidification structure are obtained, and depth of the metal molten pool is obtained by direct measurement according to morphology of the surface to be detected of the macroscopic acid dipping sample.
Description
Technical field
The present invention relates to the measuring method of a kind of esr metal pool shape looks, belong to metallurgical technology technical field.
Background technology
Measure the shape looks of esr metal pool, the degree of depth of metal pool can be measured, tissue when simultaneously can find out metal freezing, such as dendritic segregation degree, the dendrite direction of growth etc., such that it is able to the reasonableness of checking electroslag remelting process, evaluate ESR ingot internal segregation degree, the later stage is improved, optimizes electroslag remelting process, it is to increase electroslag ingot inner quality has important directive significance.
In current industry, most employing two kinds of methods measure esr metal pool shape looks. First method is when esr, adds the tungsten particulate of big proportion to slag bath, the ESR ingot after smelting is longitudinally dissected and carries out low power acidleach inspection, the shape in display molten bath after being processed into sample. During owing to adding tungsten particulate, the whipping force of slag bath is very big, and tungsten particulate distributes disperse in molten bath, and molten bath shape looks manifest fuzzyyer, clear not. In addition, tungsten is noble metal, and cost of determination is bigger. 2nd kind of method adopts " wire interpolation " to measure molten bath shape looks. This method is with the metal bar being greater than crystallizer diameter length, select crystallizer diameter length one section, carves upper seven measuring points by decile, and also namely the distance of every 2 is 1/6th of crystallizer diameter, then stand-by. When esr finally starts filling, have a power failure and measure: seven the some positions carved along crystallizer diameter direction metal bar by previously prepd wire fast, record the pool depth of each point position again and again. Owing to there being slag to enclose slotting people's bath, comprising the thick pool depth of slag so being easy to measure, obtaining the bath degree of depth of each measuring point, bath shape just can be drawn out. The method has following weak point: 1, can only measure remelting shape, the solidified structure information such as dendritic segregation degree and dendrite direction of growth when can not find out metal freezing very intuitively; 2, not easily operate, and can only carry out when the esr later stage meets and measures height; 3, there is certain danger simultaneously.
So, for the problems referred to above, necessary research out a kind of can measure esr metal pool shape looks, cheapness, method simple to operation comprehensively.
Summary of the invention
Goal of the invention: the present invention is directed to above-mentioned prior art Problems existing and make improvement, namely the present invention discloses the measuring method of a kind of esr metal pool shape looks.
Technical scheme: the measuring method of a kind of esr metal pool shape looks, comprises the following steps:
(1) in whole esr whole process, evenly adding a sulphur iron particle in slag bath every 1.5～2.5 hours, the sulphur content of described sulphur iron particle is 24～34%, and sulphur iron particle diameter is 4～6mm, add-on 140～200g/ time;
(2) ESR ingot obtained by esr is longitudinally dissected, and makes low power acidleach sample;
(3) acidleach macroscopic examination
(31) low power acidleach sample being placed horizontally in grooved container, inspection faces,
(32) aqueous nitric acid of concentration 40wt% is watered the inspection face of low power acidleach test piece, and repeatedly scrubs in inspection face with hairbrush, and constantly supplementary concentration is the aqueous nitric acid of 40wt%,
After (33) 8～15 minutes, low power acidleach sample is taken out and with water, acid solution is rinsed well, and blow dry for subsequent use;
(4) directly observing the shape looks of the detection faces of low power acidleach sample, namely draw esr metal pool shape looks and solidified structure shape looks, according to the shape looks of the detection faces of low power acidleach sample, namely direct measurement obtains the degree of depth of metal pool.
Further, in step (2), the preparation of low power acidleach sample comprises the following steps:
(21) laterally separate hatching line along ESR ingot and ESR ingot is divided into ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part;
(22) respectively by ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part along the longitudinal medullary ray cut open and obtain microcephaly's low power acidleach sample, middle-end low power acidleach sample and major part low power acidleach sample.
Further, the thickness of described microcephaly's low power acidleach sample, described middle-end low power acidleach sample and described major part low power acidleach sample is 20mm.
Useful effect: the measuring method of a kind of esr metal pool shape looks disclosed by the invention has following useful effect:
1, esr process sulphur iron adds simple to operation, and can add in esr different time sections, measures the molten bath shape looks of different time sections in esr process;
2, sulphur iron is cheap, and cost of determination is low;
3, can measuring molten bath shape looks comprehensively, comprise the information such as melting pool shape, solidified structure, molten bath shape looks are high-visible. Shape is that the color difference according to the display of sample after acidleach macroscopic examination measures, and the darker part of Show Color is melting pool shape; Whether solidified structure observes size, quantity, the direction of dendrite and have shrinkage cavity, the defect such as loose to measure.
Accompanying drawing explanation
Fig. 1 is that ESR ingot dissects schematic diagram;
Wherein:
10-longitudinal cenlerline 20-microcephaly's low power acidleach sample
30-middle-end low power acidleach sample 40-major part low power acidleach sample
50-laterally separates hatching line
Embodiment:
Below the specific embodiment of the present invention is illustrated in detail.
Specific embodiment 1
A measuring method for esr metal pool shape looks, comprises the following steps:
(1) in whole esr whole process, evenly adding a sulphur iron particle in slag bath every 1.5 hours, the sulphur content of sulphur iron particle is 24%, and sulphur iron particle diameter is 4mm, add-on 140g/ time;
(2) ESR ingot obtained by esr is longitudinally dissected, and makes low power acidleach sample;
(3) acidleach macroscopic examination
(31) low power acidleach sample being placed horizontally in grooved container, inspection faces,
(32) aqueous nitric acid of concentration 40wt% is watered the inspection face of low power acidleach test piece, and repeatedly scrubs in inspection face with hairbrush, and constantly supplementary concentration is the aqueous nitric acid of 40wt%,
After (33) 8 minutes, low power acidleach sample is taken out and with water, acid solution is rinsed well, and blow dry for subsequent use;
(4) directly observing the shape looks of the detection faces of low power acidleach sample, namely draw esr metal pool shape looks and solidified structure shape looks, according to the shape looks of the detection faces of low power acidleach sample, namely direct measurement obtains the degree of depth of metal pool.
Further, in step (2), the preparation of low power acidleach sample comprises the following steps:
(21) laterally separate hatching line 50 along ESR ingot and ESR ingot is divided into ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part (as shown in Figure 1);
(22) respectively by ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part along the longitudinal medullary ray 10 cut open and obtain microcephaly's low power acidleach sample 20, middle-end low power acidleach sample 30 and major part low power acidleach sample 40.
Further, the thickness of microcephaly's low power acidleach sample 20, middle-end low power acidleach sample 30 and major part low power acidleach sample 40 is 20mm.
Specific embodiment 2
A measuring method for esr metal pool shape looks, comprises the following steps:
(1) in whole esr whole process, evenly adding a sulphur iron particle in slag bath every 2.5 hours, the sulphur content of sulphur iron particle is 34%, and sulphur iron particle diameter is 6mm, add-on 200g/ time;
(2) ESR ingot obtained by esr is longitudinally dissected, and makes low power acidleach sample;
(3) acidleach macroscopic examination
(31) low power acidleach sample being placed horizontally in grooved container, inspection faces,
(32) aqueous nitric acid of concentration 40wt% is watered the inspection face of low power acidleach test piece, and repeatedly scrubs in inspection face with hairbrush, and constantly supplementary concentration is the aqueous nitric acid of 40wt%,
After (33) 15 minutes, low power acidleach sample is taken out and with water, acid solution is rinsed well, and blow dry for subsequent use;
(4) directly observing the shape looks of the detection faces of low power acidleach sample, namely draw esr metal pool shape looks and solidified structure shape looks, according to the shape looks of the detection faces of low power acidleach sample, namely direct measurement obtains the degree of depth of metal pool.
Further, in step (2), the preparation of low power acidleach sample comprises the following steps:
(21) laterally separate hatching line 50 along ESR ingot and ESR ingot is divided into ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part (as shown in Figure 1);
(22) respectively by ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part along the longitudinal medullary ray 10 cut open and obtain microcephaly's low power acidleach sample 20, middle-end low power acidleach sample 30 and major part low power acidleach sample 40.
Further, the thickness of microcephaly's low power acidleach sample 20, middle-end low power acidleach sample 30 and major part low power acidleach sample 40 is 20mm.
Specific embodiment 3
A measuring method for esr metal pool shape looks, comprises the following steps:
(1) in whole esr whole process, evenly adding a sulphur iron particle in slag bath every 2 hours, the sulphur content of sulphur iron particle is 30%, and sulphur iron particle diameter is 5mm, add-on 170g/ time;
(2) ESR ingot obtained by esr is longitudinally dissected, and makes low power acidleach sample;
(3) acidleach macroscopic examination
(31) low power acidleach sample being placed horizontally in grooved container, inspection faces,
(32) aqueous nitric acid of concentration 40wt% is watered the inspection face of low power acidleach test piece, and repeatedly scrubs in inspection face with hairbrush, and constantly supplementary concentration is the aqueous nitric acid of 40wt%,
After (33) 10 minutes, low power acidleach sample is taken out and with water, acid solution is rinsed well, and blow dry for subsequent use;
(4) directly observing the shape looks of the detection faces of low power acidleach sample, namely draw esr metal pool shape looks and solidified structure shape looks, according to the shape looks of the detection faces of low power acidleach sample, namely direct measurement obtains the degree of depth of metal pool.
Further, in step (2), the preparation of low power acidleach sample comprises the following steps:
(21) laterally separate hatching line 50 along ESR ingot and ESR ingot is divided into ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part (as shown in Figure 1);
(22) respectively by ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part along the longitudinal medullary ray 10 cut open and obtain microcephaly's low power acidleach sample 20, middle-end low power acidleach sample 30 and major part low power acidleach sample 40.
Further, the thickness of microcephaly's low power acidleach sample 20, middle-end low power acidleach sample 30 and major part low power acidleach sample 40 is 20mm.
Above embodiments of the present invention are elaborated. But the present invention is not limited to above-mentioned enforcement mode, in the ken that art those of ordinary skill possesses, it is also possible to make a variety of changes under the prerequisite not departing from objective of the present invention.
Claims (3)
1. the measuring method of esr metal pool shape looks, it is characterised in that, comprise the following steps:
(1) in whole esr whole process, evenly adding a sulphur iron particle in slag bath every 1.5～2.5 hours, the sulphur content of described sulphur iron particle is 24～34%, and sulphur iron particle diameter is 4～6mm, add-on 140～200g/ time;
(2) ESR ingot obtained by esr is longitudinally dissected, and makes low power acidleach sample;
(3) acidleach macroscopic examination
(31) low power acidleach sample being placed horizontally in grooved container, inspection faces,
(32) aqueous nitric acid of concentration 40wt% is watered the inspection face of low power acidleach test piece, and repeatedly scrubs in inspection face with hairbrush, and constantly supplementary concentration is the aqueous nitric acid of 40wt%,
After (33) 8～15 minutes, low power acidleach sample is taken out and with water, acid solution is rinsed well, and blow dry for subsequent use;
(4) directly observing the shape looks of the detection faces of low power acidleach sample, namely draw esr metal pool shape looks and solidified structure shape looks, according to the shape looks of the detection faces of low power acidleach sample, namely direct measurement obtains the degree of depth of metal pool.
2. the measuring method of a kind of esr metal pool shape looks according to claim 1, it is characterised in that, in step (2), the preparation of low power acidleach sample comprises the following steps:
(21) laterally separate hatching line along ESR ingot and ESR ingot is divided into ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part;
(22) respectively by ESR ingot microcephaly, ESR ingot middle-end and ESR ingot major part along the longitudinal medullary ray cut open and obtain microcephaly's low power acidleach sample, middle-end low power acidleach sample and major part low power acidleach sample.
3. the measuring method of a kind of esr metal pool shape looks according to claim 2, it is characterised in that, the thickness of described microcephaly's low power acidleach sample, described middle-end low power acidleach sample and described major part low power acidleach sample is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030636.XA CN105675513A (en) | 2016-01-18 | 2016-01-18 | Method for determining morphology of metal molten pool for electroslag remelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030636.XA CN105675513A (en) | 2016-01-18 | 2016-01-18 | Method for determining morphology of metal molten pool for electroslag remelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105675513A true CN105675513A (en) | 2016-06-15 |
Family
ID=56301275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610030636.XA Pending CN105675513A (en) | 2016-01-18 | 2016-01-18 | Method for determining morphology of metal molten pool for electroslag remelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105675513A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498176A (en) * | 2016-12-08 | 2017-03-15 | 东北大学 | A kind of esr process metal bath shape scaling method |
| CN108362256A (en) * | 2018-03-07 | 2018-08-03 | 辽宁科技大学 | A kind of electroslag remelting metal bath bottom pattern aided observing device and observation procedure |
| CN110360948A (en) * | 2019-07-09 | 2019-10-22 | 大连理工大学 | A kind of laser cladding layer and Pool characterizing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009014473A1 (en) * | 2007-07-24 | 2009-01-29 | Zakrytoe Akcionernoe Obshestvo 'uralkaliy-Technologiya' | Method for preparing samples for quantitatively and qualitatively determining the precious metal content in products of processing of potassium and magnesium ores |
| CN101367115A (en) * | 2008-08-22 | 2009-02-18 | 武汉钢铁(集团)公司 | Casting blank liquid core length measuring method |
| CN104493114A (en) * | 2014-11-28 | 2015-04-08 | 苏州有色金属研究院有限公司 | Method for measuring liquid cave morphology of aluminum alloy cast ingot by using tracing metal |
-
2016
- 2016-01-18 CN CN201610030636.XA patent/CN105675513A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009014473A1 (en) * | 2007-07-24 | 2009-01-29 | Zakrytoe Akcionernoe Obshestvo 'uralkaliy-Technologiya' | Method for preparing samples for quantitatively and qualitatively determining the precious metal content in products of processing of potassium and magnesium ores |
| CN101688823B (en) * | 2007-07-24 | 2011-09-14 | 乌拉尔卡里技术联合股份有限公司 | Method for preparing samples for quantitatively and qualitatively determining the precious metal content in products of processing of potassium and magnesium ores |
| CN101367115A (en) * | 2008-08-22 | 2009-02-18 | 武汉钢铁(集团)公司 | Casting blank liquid core length measuring method |
| CN104493114A (en) * | 2014-11-28 | 2015-04-08 | 苏州有色金属研究院有限公司 | Method for measuring liquid cave morphology of aluminum alloy cast ingot by using tracing metal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498176A (en) * | 2016-12-08 | 2017-03-15 | 东北大学 | A kind of esr process metal bath shape scaling method |
| CN108362256A (en) * | 2018-03-07 | 2018-08-03 | 辽宁科技大学 | A kind of electroslag remelting metal bath bottom pattern aided observing device and observation procedure |
| CN108362256B (en) * | 2018-03-07 | 2023-09-08 | 辽宁科技大学 | Auxiliary observation device and method for bottom morphology of electroslag remelting metal molten pool |
| CN110360948A (en) * | 2019-07-09 | 2019-10-22 | 大连理工大学 | A kind of laser cladding layer and Pool characterizing method |
| CN110360948B (en) * | 2019-07-09 | 2020-12-11 | 大连理工大学 | Laser cladding layer and molten pool shape characterization method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105675513A (en) | Method for determining morphology of metal molten pool for electroslag remelting | |
| CN103278424A (en) | Quantitative evaluation method for continuous casting billet center porosity or center shrinkage cavity | |
| Kuhn et al. | Spatiotemporal morphological transitions in thin-layer electrodeposition: The Hecker effect | |
| CN106018728B (en) | A kind of quantitative evaluation method of square billet center gross segregation | |
| CN109550906B (en) | Method for measuring molten steel flow velocity in continuous casting crystallizer | |
| Ye et al. | Real-time quality prediction of casting billet based on random forest algorithm | |
| CN103323480A (en) | Evaluation method of composition segregation of low-carbon high-manganese steel continuous casting small square billet | |
| CN102661966A (en) | Method and device for measuring linear shrinkage rate and thermal stress of metal solidification process | |
| Bao et al. | A method for observing the three-dimensional morphologies of inclusions in steel | |
| CN104777225A (en) | Steel ingot inner defect ultrasonic wave A scanning identification method | |
| CN102865842B (en) | Ladle slag layer thickness measurement mechanism, its preparation method and measuring method thereof | |
| CN204988778U (en) | A sample mould that is used for cast iron spectrum and carbon sulphur to detect | |
| CN104493114A (en) | Method for measuring liquid cave morphology of aluminum alloy cast ingot by using tracing metal | |
| CN104807884A (en) | Ultrasonic flaw detection grading method for internal defects of steel ingot | |
| CN104568921B (en) | Single rare earth is mingled with the assay method of sulfide content in steel | |
| CN105149541B (en) | For the technique extruding Die Casting | |
| CN203299167U (en) | Low-oxygen half-cell for oxygen determination sensor | |
| CN103045795A (en) | Liquid level measurement system of converter sublance | |
| CN202033219U (en) | Molten steel sampler for electrolysis of small sample | |
| CN103245711A (en) | Neutral network-based molten aluminum nonmetallic inclusion online soft measurement device and method | |
| EP2113079B1 (en) | Sensor for determining the oxygen content of cast iron | |
| Zang et al. | Industrial test of a 6-m long bearing steel ingot by electroslag remelting withdrawing process | |
| JP5324141B2 (en) | Method for analyzing inclusions containing CaO in steel | |
| CN108362256B (en) | Auxiliary observation device and method for bottom morphology of electroslag remelting metal molten pool | |
| CN203393182U (en) | Steel ladle aluminum deoxidation compound block for steelmaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160615 |