Inspection of the Metal Microstructure in Laser-Surfaced Rollers
The microstructure and crystalline structure of laser-surfaced 9Kh2MF and 8Kh3SMFA steel samples are studied. Samples are taken from the working rollers of the reversible rolling mill at PAO Uralmashzavod. Sealing of surface cracks in the rollers by means of a laser is regarded as an effective repai...
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| Veröffentlicht in: | Steel in translation 2018-07, Vol.48 (7), p.403-410 |
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| creator | Belonosov, A. V. Chikova, O. A. Zaitseva, N. A. |
| description | The microstructure and crystalline structure of laser-surfaced 9Kh2MF and 8Kh3SMFA steel samples are studied. Samples are taken from the working rollers of the reversible rolling mill at PAO Uralmashzavod. Sealing of surface cracks in the rollers by means of a laser is regarded as an effective repair method in small-scale production. The goal of the research is to monitor the quality of laser-surfaced steel components. The inspection focuses on metallurgical defects (nonmetallic inclusions, gaps, regions with nonuniform chemical composition) in the surfacing zone and the surrounding thermal influence zone. An ultrasound method is employed. Metallographic study of the microstructure and crystalline structure of laser-surfaced steel samples is necessary in order to develop an ultrasonic monitoring method. Metallurgical defects in steel are mainly found by means of a scanning electron microscope capable of X-ray spectral microanalysis (EDS analysis) and electron back-scattering diffraction (EBSD analysis). The present work employs a Carl Zeiss Auriga Crossbeam scanning electron microscope with EDS analysis of the surface’s elemental composition and EBSD analysis of the surface’s crystalline structure. The metallographic data for the laser-surfaced steel samples from the rollers reveal metallurgical defects along the boundary of the surfacing zone. The microheterogeneities measure 10–50 and 1–3 μm for 9Kh2MF and 8Kh3SMFA steel, respectively. The elements present include Mn, Si, and O for 9Kh2MF steel and Mn, Cr, and Mo for 8Kh3SMFA steel. The surface metal is found to be less textured than the basic metal and has more uniform acoustic characteristics. That must be taken into account in ultrasound monitoring of laser-surfaced steel components. In the ultrasound monitoring of laser-surfaced working rollers, signal recording with reflectivity equivalent to a flat-bottomed hole of 1.5-mm diameter is recommended. |
| doi_str_mv | 10.3103/S0967091218070033 |
| format | Article |
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V. ; Chikova, O. A. ; Zaitseva, N. A.</creator><creatorcontrib>Belonosov, A. V. ; Chikova, O. A. ; Zaitseva, N. A.</creatorcontrib><description>The microstructure and crystalline structure of laser-surfaced 9Kh2MF and 8Kh3SMFA steel samples are studied. Samples are taken from the working rollers of the reversible rolling mill at PAO Uralmashzavod. Sealing of surface cracks in the rollers by means of a laser is regarded as an effective repair method in small-scale production. The goal of the research is to monitor the quality of laser-surfaced steel components. The inspection focuses on metallurgical defects (nonmetallic inclusions, gaps, regions with nonuniform chemical composition) in the surfacing zone and the surrounding thermal influence zone. An ultrasound method is employed. Metallographic study of the microstructure and crystalline structure of laser-surfaced steel samples is necessary in order to develop an ultrasonic monitoring method. Metallurgical defects in steel are mainly found by means of a scanning electron microscope capable of X-ray spectral microanalysis (EDS analysis) and electron back-scattering diffraction (EBSD analysis). The present work employs a Carl Zeiss Auriga Crossbeam scanning electron microscope with EDS analysis of the surface’s elemental composition and EBSD analysis of the surface’s crystalline structure. The metallographic data for the laser-surfaced steel samples from the rollers reveal metallurgical defects along the boundary of the surfacing zone. The microheterogeneities measure 10–50 and 1–3 μm for 9Kh2MF and 8Kh3SMFA steel, respectively. The elements present include Mn, Si, and O for 9Kh2MF steel and Mn, Cr, and Mo for 8Kh3SMFA steel. The surface metal is found to be less textured than the basic metal and has more uniform acoustic characteristics. That must be taken into account in ultrasound monitoring of laser-surfaced steel components. In the ultrasound monitoring of laser-surfaced working rollers, signal recording with reflectivity equivalent to a flat-bottomed hole of 1.5-mm diameter is recommended.</description><identifier>ISSN: 0967-0912</identifier><identifier>EISSN: 1935-0988</identifier><identifier>DOI: 10.3103/S0967091218070033</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Chemical composition ; Chemistry and Materials Science ; Chromium ; Crystal defects ; Crystal structure ; Crystallinity ; Defects ; Electron microscopes ; Inspection ; Lasers ; Materials Science ; Metallurgy ; Microstructure ; Molybdenum ; Monitoring ; Nonmetallic inclusions ; Organic chemistry ; Recording ; Rollers ; Rolling mills ; Steel structures ; Surface cracks ; Surfacing ; Ultrasonic imaging ; Ultrasonic methods ; Ultrasonic testing ; X ray spectra</subject><ispartof>Steel in translation, 2018-07, Vol.48 (7), p.403-410</ispartof><rights>Allerton Press, Inc. 2018</rights><rights>Steel in Translation is a copyright of Springer, (2018). 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A.</creatorcontrib><title>Inspection of the Metal Microstructure in Laser-Surfaced Rollers</title><title>Steel in translation</title><addtitle>Steel Transl</addtitle><description>The microstructure and crystalline structure of laser-surfaced 9Kh2MF and 8Kh3SMFA steel samples are studied. Samples are taken from the working rollers of the reversible rolling mill at PAO Uralmashzavod. Sealing of surface cracks in the rollers by means of a laser is regarded as an effective repair method in small-scale production. The goal of the research is to monitor the quality of laser-surfaced steel components. The inspection focuses on metallurgical defects (nonmetallic inclusions, gaps, regions with nonuniform chemical composition) in the surfacing zone and the surrounding thermal influence zone. An ultrasound method is employed. Metallographic study of the microstructure and crystalline structure of laser-surfaced steel samples is necessary in order to develop an ultrasonic monitoring method. Metallurgical defects in steel are mainly found by means of a scanning electron microscope capable of X-ray spectral microanalysis (EDS analysis) and electron back-scattering diffraction (EBSD analysis). The present work employs a Carl Zeiss Auriga Crossbeam scanning electron microscope with EDS analysis of the surface’s elemental composition and EBSD analysis of the surface’s crystalline structure. The metallographic data for the laser-surfaced steel samples from the rollers reveal metallurgical defects along the boundary of the surfacing zone. The microheterogeneities measure 10–50 and 1–3 μm for 9Kh2MF and 8Kh3SMFA steel, respectively. The elements present include Mn, Si, and O for 9Kh2MF steel and Mn, Cr, and Mo for 8Kh3SMFA steel. The surface metal is found to be less textured than the basic metal and has more uniform acoustic characteristics. That must be taken into account in ultrasound monitoring of laser-surfaced steel components. In the ultrasound monitoring of laser-surfaced working rollers, signal recording with reflectivity equivalent to a flat-bottomed hole of 1.5-mm diameter is recommended.</description><subject>Chemical composition</subject><subject>Chemistry and Materials Science</subject><subject>Chromium</subject><subject>Crystal defects</subject><subject>Crystal structure</subject><subject>Crystallinity</subject><subject>Defects</subject><subject>Electron microscopes</subject><subject>Inspection</subject><subject>Lasers</subject><subject>Materials Science</subject><subject>Metallurgy</subject><subject>Microstructure</subject><subject>Molybdenum</subject><subject>Monitoring</subject><subject>Nonmetallic inclusions</subject><subject>Organic chemistry</subject><subject>Recording</subject><subject>Rollers</subject><subject>Rolling mills</subject><subject>Steel structures</subject><subject>Surface cracks</subject><subject>Surfacing</subject><subject>Ultrasonic imaging</subject><subject>Ultrasonic methods</subject><subject>Ultrasonic testing</subject><subject>X ray spectra</subject><issn>0967-0912</issn><issn>1935-0988</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kEFLxDAQhYMouK7-AG8Bz9WZJmmTm7LourCL4Oq5pOlEu9R2TdqD_96WFTyIpzm89703PMYuEa4FgrjZgslyMJiihhxAiCM2QyNUAkbrYzab5GTST9lZjDsAlaUKZ-x21cY9ub7uWt553r8T31BvG76pXehiHwbXD4F43fK1jRSS7RC8dVTx565pKMRzduJtE-ni587Z68P9y-IxWT8tV4u7deJQC5EQ2cyQlMpkValKbXPvjNKlLavcoSLrvVMoLRqfWo85Oiczr0sFVoKqpJizq0PuPnSfA8W-2HVDaMfKIkVhZJZrAaMLD67p-RjIF_tQf9jwVSAU01DFn6FGJj0wcfS2bxR-k_-HvgEHymnl</recordid><startdate>20180701</startdate><enddate>20180701</enddate><creator>Belonosov, A. V.</creator><creator>Chikova, O. A.</creator><creator>Zaitseva, N. A.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20180701</creationdate><title>Inspection of the Metal Microstructure in Laser-Surfaced Rollers</title><author>Belonosov, A. V. ; Chikova, O. A. ; Zaitseva, N. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1833-eea69e44596db5b8a7fc958babd7c15eaffc514a19f2af171cc46f8b50a405d43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Chemical composition</topic><topic>Chemistry and Materials Science</topic><topic>Chromium</topic><topic>Crystal defects</topic><topic>Crystal structure</topic><topic>Crystallinity</topic><topic>Defects</topic><topic>Electron microscopes</topic><topic>Inspection</topic><topic>Lasers</topic><topic>Materials Science</topic><topic>Metallurgy</topic><topic>Microstructure</topic><topic>Molybdenum</topic><topic>Monitoring</topic><topic>Nonmetallic inclusions</topic><topic>Organic chemistry</topic><topic>Recording</topic><topic>Rollers</topic><topic>Rolling mills</topic><topic>Steel structures</topic><topic>Surface cracks</topic><topic>Surfacing</topic><topic>Ultrasonic imaging</topic><topic>Ultrasonic methods</topic><topic>Ultrasonic testing</topic><topic>X ray spectra</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Belonosov, A. 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V.</au><au>Chikova, O. A.</au><au>Zaitseva, N. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Inspection of the Metal Microstructure in Laser-Surfaced Rollers</atitle><jtitle>Steel in translation</jtitle><stitle>Steel Transl</stitle><date>2018-07-01</date><risdate>2018</risdate><volume>48</volume><issue>7</issue><spage>403</spage><epage>410</epage><pages>403-410</pages><issn>0967-0912</issn><eissn>1935-0988</eissn><abstract>The microstructure and crystalline structure of laser-surfaced 9Kh2MF and 8Kh3SMFA steel samples are studied. Samples are taken from the working rollers of the reversible rolling mill at PAO Uralmashzavod. Sealing of surface cracks in the rollers by means of a laser is regarded as an effective repair method in small-scale production. The goal of the research is to monitor the quality of laser-surfaced steel components. The inspection focuses on metallurgical defects (nonmetallic inclusions, gaps, regions with nonuniform chemical composition) in the surfacing zone and the surrounding thermal influence zone. An ultrasound method is employed. Metallographic study of the microstructure and crystalline structure of laser-surfaced steel samples is necessary in order to develop an ultrasonic monitoring method. Metallurgical defects in steel are mainly found by means of a scanning electron microscope capable of X-ray spectral microanalysis (EDS analysis) and electron back-scattering diffraction (EBSD analysis). The present work employs a Carl Zeiss Auriga Crossbeam scanning electron microscope with EDS analysis of the surface’s elemental composition and EBSD analysis of the surface’s crystalline structure. The metallographic data for the laser-surfaced steel samples from the rollers reveal metallurgical defects along the boundary of the surfacing zone. The microheterogeneities measure 10–50 and 1–3 μm for 9Kh2MF and 8Kh3SMFA steel, respectively. The elements present include Mn, Si, and O for 9Kh2MF steel and Mn, Cr, and Mo for 8Kh3SMFA steel. The surface metal is found to be less textured than the basic metal and has more uniform acoustic characteristics. That must be taken into account in ultrasound monitoring of laser-surfaced steel components. In the ultrasound monitoring of laser-surfaced working rollers, signal recording with reflectivity equivalent to a flat-bottomed hole of 1.5-mm diameter is recommended.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.3103/S0967091218070033</doi><tpages>8</tpages></addata></record> |
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| subjects | Chemical composition Chemistry and Materials Science Chromium Crystal defects Crystal structure Crystallinity Defects Electron microscopes Inspection Lasers Materials Science Metallurgy Microstructure Molybdenum Monitoring Nonmetallic inclusions Organic chemistry Recording Rollers Rolling mills Steel structures Surface cracks Surfacing Ultrasonic imaging Ultrasonic methods Ultrasonic testing X ray spectra |
| title | Inspection of the Metal Microstructure in Laser-Surfaced Rollers |
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