CN1116599C - Display technology for solidifying structure of continuously cast steel billet - Google Patents
Display technology for solidifying structure of continuously cast steel billet Download PDFInfo
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- CN1116599C CN1116599C CN 00123293 CN00123293A CN1116599C CN 1116599 C CN1116599 C CN 1116599C CN 00123293 CN00123293 CN 00123293 CN 00123293 A CN00123293 A CN 00123293A CN 1116599 C CN1116599 C CN 1116599C
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Abstract
The present invention relates to display technology for a solidifying structure of a continuous casting steel billet in the field of metallurgy. A solidifying structure pattern of the cross-section of a steel billet can be clearly shown by the technology, and environment can not be polluted. The present invention is composed of the following procedures of sampling and preparation, the etching engraving of a sample, image processing and picture making. An image of the solidifying structure of the casting billet is processed by a computer through a digital camera or a scanner. The present invention can rapidly provide the clear image of the solidifying structure of the complete casting billet so that the proportion of a columnar crystal and an equiaxial crystal, and data, such as grain refining degree, etc. are further detected. The present invention supplies a reliable basis to the judgment of the internal quality of the casting billet.
Description
The invention belongs to the continuous-casting of steel billet technology in the metallurgical industry, particularly continuous casting steel billet solidified structure display packing.
At present, the technology that is used to detect the continuous casting steel billet internal soundness has the sulphur print and the acid-hatching of young eggs.Sulphur print is in order to indirect judgement strand internal soundness, and its principle is that sulphur and effect of sulfuric acid generate sulfuretted hydrogen in the steel, and sulfuretted hydrogen generates silver sulfide brown precipitation with the silver bromide reaction of printing paper again, reflects the segregation degree of sulphur on printing paper.At present, it is lower that the sulphur in the steel has been controlled, makes sufur printing be difficult for showing.The acid-hatching of young eggs adopts hot acid digestion strand sample, shows the strand inherent vice.This method trivial operations, environmental pollution is serious, and is difficult for providing picture information, uses seldom.Except that above two kinds of methods, also have a kind of strand dendrite explicit representation, in laboratory scope, once obtained strand dendrite image with the method.But because of being subjected to whole sample processing of strand and corruption to be carved into the restriction that resembles drawing method, still can not carry out the industrialization operation, have not yet to see the report that the complete big section of strand shows mapping the whole section of strand.
The purpose of this invention is to provide and a kind ofly can clearly show steel billet section solidified structure figure, continuous casting steel billet solidified structure display packing free from environmental pollution again.
The continuous casting steel billet solidified structure display packing that the present invention relates to is to the effect that: 1. take a sample and prepare: cut thickness at the detection position of strand with flame cutter and be about 60～80 millimeters strand sample; For eliminating the influence of flame cutting, detection faces is excised 10～15 millimeters with planer or milling machine; With grinding machine detection faces is finish grinded processing, smooth finish should reach spends 8; With the burnishing machine polishing, make it reach metallographic and detect equal luminance brightness again.2. the etch of sample is rotten carves: adopt stannous chloride, hydrochloric acid, magnesium chloride and second alcohol and water to prepare mordant by a certain percentage, this mordant is nontoxic, tasteless, non-stimulated.Mordant is packed in the etching tank, and sample is put into groove, constantly stir, and about 1～4 minute of etching time, can seeing clearly, dendrite shows.Take out sample, with 70～80 ℃ hot water injections 5～10 minutes, blot water stain, again with the ethanol cleaning, dry up, can obtain the casting blank solidification tissue photo of complete display.3. Flame Image Process and picture making: adopt digital camera or scanner to carry out computing the casting blank solidification tissue is carried out Flame Image Process by computing machine.After Flame Image Process was finished, instruction monochrome laser printer or color inkjet printer were made picture.Provide relevant technician to analyze, submit the relevant data report to.
The continuous casting steel billet solidified structure display packing that the present invention relates to, can provide complete casting blank solidification to organize distinct image apace, further measure data such as the ratio of column crystal and equiax crystal and degree of grain refinement in view of the above, provide reliable basis the judge of strand internal soundness.
The present invention will be further described below in conjunction with embodiment.
Embodiment:
1. sampling: cut the sample piece that is about 40～60 millimeters with flame cutter at the detection position, the air-cooled room temperature of reducing to rapidly also can be carried out corresponding sampling operation on cold base; 2. sample processing: for eliminating the influence of flame cutting to solidified structure, process with the transversal section of milling machine to the strand sample, the processing cutting quantity is about 10～15 millimeters.For ease of next step grinding machine processing, also should mill flame cutting vestige to non-detection faces and reach the bright and clean plane parallel with detection faces.On grinding machine detection faces is processed, machining precision should reach spends 6 to spending 8.Detection faces polished to reach spend 10 smooth finish.3. the corrosion of sample: mordant is specifically filled a prescription as follows: cupric chloride 1～5 gram, magnesium chloride 3～6 grams, 1～4 milliliter of hydrochloric acid, 30～500 milliliters of ethanol, 15～40 milliliters in water; Sample is put into the groove that mordant is housed carry out corruption and carve, can constantly stir the rotten also available soft cotton yarn of the liquid specimen surface that constantly rubs of carving.About 1～4 minute, finding had obvious about dendrite to manifest, and stopped rotten the quarter.4. take out sample: clean remaining corrosive liquid with hot water, remove surperficial remaining moisture with thieving paper then, with ethanol washed samples surface once more, when film being arranged as the surface, available alcohol wipe, until the clear demonstration of dendrite, 5. computer scanning imaging of hot blast drying sample: sample to be tested is moved to the scanner place, computing machine carries out calculation process to scan image, and printable publishing picture.Can cut apart scanning and print and to publish picture for bigger sample section.
According to the image of strand detection faces, can preferably organize corresponding every continuous casting process technical indicator, and the technical indicator of production scene be regulated and control by computing machine with good casting blank solidification.
Claims (1)
1, a kind of continuous casting steel billet solidified structure display packing, it is characterized in that forming and 1. take a sample and prepare: cut thickness at the detection position of strand with flame cutter and be about 60～80 millimeters strand sample by following steps, for eliminating the influence of flame cutting, with planer or milling machine detection faces is excised 10～15 millimeters, with grinding machine detection faces is finish grinded processing, smooth finish should reach spends 8, again with the burnishing machine polishing, makes it reach metallographic and detects equal luminance brightness; 2. the etch of sample is rotten carves: adopt cupric chloride 1～5 gram, magnesium chloride 3～6 grams, 1～4 milliliter of hydrochloric acid, 30～500 milliliters of ethanol, the mordant of the ratio preparation that water is 15～40 milliliters, mordant is packed in the etching tank, and sample is put into groove, constantly stirs, about 1～4 minute of etching time, take out sample, with 70～80 ℃ hot water injections 5～10 minutes, blot water stain, again with the ethanol cleaning, dry up and get final product; 3. Flame Image Process and picture making: adopt digital camera or scanner to carry out computing casting blank solidification tissue is carried out Flame Image Process, after Flame Image Process is finished, instruct monochrome laser printer or color inkjet printer to make picture by computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123293 CN1116599C (en) | 2000-11-23 | 2000-11-23 | Display technology for solidifying structure of continuously cast steel billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123293 CN1116599C (en) | 2000-11-23 | 2000-11-23 | Display technology for solidifying structure of continuously cast steel billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1308226A CN1308226A (en) | 2001-08-15 |
| CN1116599C true CN1116599C (en) | 2003-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00123293 Expired - Fee Related CN1116599C (en) | 2000-11-23 | 2000-11-23 | Display technology for solidifying structure of continuously cast steel billet |
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| Country | Link |
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| CN (1) | CN1116599C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144762B (en) * | 2006-09-13 | 2010-05-12 | 鞍钢股份有限公司 | Corrosive agent for displaying silicon steel solidification structure and preparation method thereof |
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| CN101995350B (en) * | 2009-08-21 | 2012-09-19 | 宝山钢铁股份有限公司 | Corroding agent for displaying continuously cast bloom semimacrosegregation and use method thereof |
| CN102072908B (en) * | 2010-09-07 | 2012-06-06 | 沈阳东北大学冶金技术研究所有限公司 | Dendrite corrosion low-power checkout integration method |
| CN102174699B (en) * | 2010-09-07 | 2012-08-29 | 沈阳东北大学冶金技术研究所有限公司 | Dendritic crystal corrosion macroscopic examination reagent for solidification structures and defects of continuous cast blank and preparation method thereof |
| CN102401759B (en) * | 2010-09-07 | 2013-12-11 | 鞍钢股份有限公司 | Cold etching agent for ultra-low carbon steel casting blank low-magnification grain structure and preparation method thereof |
| CN104197858B (en) * | 2014-09-10 | 2017-05-03 | 重庆大学 | Method for quantitatively describing topographic characteristics of solidification structures of variety steel continuous casting billet |
| CN104316369B (en) * | 2014-10-13 | 2017-01-11 | 首钢总公司 | Method for display dentrite morphology of gear steel continuous-casting billet |
| CN104532243A (en) * | 2014-11-28 | 2015-04-22 | 振石集团东方特钢股份有限公司 | Austenitic stainless steel continuous cast billet oscillation mark zone solidification structure and dendrite structure corrosion liquid and corrosion method thereof |
| CN107367510B (en) * | 2016-05-12 | 2020-03-31 | 鞍钢股份有限公司 | Method for measuring isometric crystal rate of high-carbon steel continuous casting billet |
| CN106525542A (en) * | 2016-12-19 | 2017-03-22 | 东北大学 | Etching agent for displaying macrostructure of low-carbon steel continuous casting and preparation method |
| CN106802307A (en) * | 2016-12-29 | 2017-06-06 | 中核北方核燃料元件有限公司 | Highly thermally conductive pellet physical property detection method |
| CN111830229B (en) * | 2020-07-12 | 2023-05-09 | 首钢集团有限公司 | Metallographic corrosive agent for primary strip-shaped structure of steel and metallographic display method |
| CN116699097B (en) * | 2023-07-28 | 2023-10-10 | 北京科技大学 | Nondestructive testing method for solidification structure of high-strength steel for automobile |
-
2000
- 2000-11-23 CN CN 00123293 patent/CN1116599C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144762B (en) * | 2006-09-13 | 2010-05-12 | 鞍钢股份有限公司 | Corrosive agent for displaying silicon steel solidification structure and preparation method thereof |
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|---|---|
| CN1308226A (en) | 2001-08-15 |
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Granted publication date: 20030730 Termination date: 20121123 |