DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITION
The problem of repair of collectors of steam generators of nuclear power plants (NPPs) has become extremely urgent today. The way of pressurization of heat exchange tubes by plugs is promising, provided the quality of the joints is high. Practical experience in the use of welding to solve this probl...
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| Format: | Article |
| Language: | English |
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Cherkasy State Technological University
2020-01-01
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| Series: | Вісник Черкаського державного технологічного університету |
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| Online Access: | http://vtn.chdtu.edu.ua/article/view/184462 |
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| author | Артемій Володимирович Бернацький Володимир Дмитрович Шелягін Володимир Миколайович Сидорець Олена Миколаївна Берднікова Олександр Васильович Сіора Тарас Миколайович Набок |
| author_facet | Артемій Володимирович Бернацький Володимир Дмитрович Шелягін Володимир Миколайович Сидорець Олена Миколаївна Берднікова Олександр Васильович Сіора Тарас Миколайович Набок |
| author_sort | Артемій Володимирович Бернацький |
| collection | DOAJ |
| description | The problem of repair of collectors of steam generators of nuclear power plants (NPPs) has become extremely urgent today. The way of pressurization of heat exchange tubes by plugs is promising, provided the quality of the joints is high. Practical experience in the use of welding to solve this problem has shown the need to find technological solutions related to increasing the depth of penetration and reducing the thermal impact area. The purpose of the work was to determine technological features of laser welding of joints of heterogeneous stainless austenitic steels in vertical spatial position with subsequent application of the results to solve the above problem. Two technological options for plugs welding in using rectilinear and annular butt joints in vertical position with different weld shape factors have been proposed. Laser welding modes have been worked out and samples of welded joints have been made. According to the results of the analysis of the data of mechanical tests, visual and radiographic control, tightness tests and metallographic studies, the appropriate modes of laser welding of plugs for each of the two options have been determined. The annular butt welded joint of the type "plate-pipe" of 10X18H10T (pipe) and 10X17H13M3T (plate) steels, made in vertical position, was the main type. Static tensile test data indicate that for welds with a joint ratio of greater than one, a fracture force of about 11% higher is achieved compared to joints of less than one. The main causes of defects in laser welding of annular welded joints of heterogeneous stainless steels are revealed and the ways of their elimination and prevention of their appearance are offered. Principal technological techniques of laser welding of annular welded joints of heterogeneous steels in different spatial positions have been developed. On the basis of the results of the conducted researches technological recommendations on laser welding of plugs in heat exchange tubes of the collector have been formulated, which will significantly improve the technology of repair of steam generators of nuclear power plants. |
| first_indexed | 2024-03-12T06:54:10Z |
| format | Article |
| id | doaj.art-70c18898248c4c7ea72593773ca727b6 |
| institution | Directory Open Access Journal |
| issn | 2306-4412 2708-6070 |
| language | English |
| last_indexed | 2024-03-12T06:54:10Z |
| publishDate | 2020-01-01 |
| publisher | Cherkasy State Technological University |
| record_format | Article |
| series | Вісник Черкаського державного технологічного університету |
| spelling | doaj.art-70c18898248c4c7ea72593773ca727b62023-09-03T00:07:51ZengCherkasy State Technological UniversityВісник Черкаського державного технологічного університету2306-44122708-60702020-01-010411212510.24025/2306-4412.4.2019.184462184462DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITIONАртемій Володимирович Бернацький0Володимир Дмитрович Шелягін1Володимир Миколайович Сидорець2Олена Миколаївна Берднікова3Олександр Васильович Сіора4Тарас Миколайович Набок5Інститут електрозварювання ім. Є.О. Патона Національної академії наук УкраїниІнститут електрозварювання ім. Є.О. Патона Національної академії наук УкраїниІнститут електрозварювання ім. Є.О. Патона Національної академії наук УкраїниІнститут електрозварювання ім. Є.О. Патона Національної академії наук УкраїниІнститут електрозварювання ім. Є.О. Патона Національної академії наук УкраїниІнститут електрозварювання ім. Є.О. Патона Національної академії наук УкраїниThe problem of repair of collectors of steam generators of nuclear power plants (NPPs) has become extremely urgent today. The way of pressurization of heat exchange tubes by plugs is promising, provided the quality of the joints is high. Practical experience in the use of welding to solve this problem has shown the need to find technological solutions related to increasing the depth of penetration and reducing the thermal impact area. The purpose of the work was to determine technological features of laser welding of joints of heterogeneous stainless austenitic steels in vertical spatial position with subsequent application of the results to solve the above problem. Two technological options for plugs welding in using rectilinear and annular butt joints in vertical position with different weld shape factors have been proposed. Laser welding modes have been worked out and samples of welded joints have been made. According to the results of the analysis of the data of mechanical tests, visual and radiographic control, tightness tests and metallographic studies, the appropriate modes of laser welding of plugs for each of the two options have been determined. The annular butt welded joint of the type "plate-pipe" of 10X18H10T (pipe) and 10X17H13M3T (plate) steels, made in vertical position, was the main type. Static tensile test data indicate that for welds with a joint ratio of greater than one, a fracture force of about 11% higher is achieved compared to joints of less than one. The main causes of defects in laser welding of annular welded joints of heterogeneous stainless steels are revealed and the ways of their elimination and prevention of their appearance are offered. Principal technological techniques of laser welding of annular welded joints of heterogeneous steels in different spatial positions have been developed. On the basis of the results of the conducted researches technological recommendations on laser welding of plugs in heat exchange tubes of the collector have been formulated, which will significantly improve the technology of repair of steam generators of nuclear power plants.http://vtn.chdtu.edu.ua/article/view/184462лазерне зварюваннякільцеві стикові з’єднаннянержавіючі сталірізнорідні зварні з’єднанняпросторе положенняпарогенератораесремонт. |
| spellingShingle | Артемій Володимирович Бернацький Володимир Дмитрович Шелягін Володимир Миколайович Сидорець Олена Миколаївна Берднікова Олександр Васильович Сіора Тарас Миколайович Набок DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITION Вісник Черкаського державного технологічного університету лазерне зварювання кільцеві стикові з’єднання нержавіючі сталі різнорідні зварні з’єднання просторе положення парогенератор аес ремонт. |
| title | DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITION |
| title_full | DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITION |
| title_fullStr | DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITION |
| title_full_unstemmed | DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITION |
| title_short | DETERMINATION OF TECHNOLOGICAL FEATURES OF LASER WELDING OF BUTT JOINTS OF DIFFERENT STAINLESS AUSTENITIC STEELS IN VERTICAL SPATIAL POSITION |
| title_sort | determination of technological features of laser welding of butt joints of different stainless austenitic steels in vertical spatial position |
| topic | лазерне зварювання кільцеві стикові з’єднання нержавіючі сталі різнорідні зварні з’єднання просторе положення парогенератор аес ремонт. |
| url | http://vtn.chdtu.edu.ua/article/view/184462 |
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