Факторы, определяющие стойкость штампов холодного выдавливания
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Дата
2016
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
Рассмотрены факторы, влияющие на эффективность внедрения процессов холодного выдавливания стальных заготовок, которая, в первую очередь, зависит от стойкости штампового инструмента. Приведены результаты исследований повышения стойкости инструмента для холодного выдавливания, выполненных в четырёх разных направлениях: совершенствование конструкции и технологии изготовления штампов; подготовка поверхности заготовок к выдавливанию; повышение комплекса свойств материала штампового инструмента термической обработкой; улучшение штампуемости материала заготовок. Результаты исследований опробованы и внедрены в производство при изготовлении тормозной втулки велосипеда.
Cold extrusion – one of the most effective low-waste manufacturing processes of steel products, the introduction of which in return for machining and hot stamping provides a significant productivity growth, increases the coefficient of metal use and the quality of the surface. There are considered the factors, which influence on the effectiveness of the introduction processes of cold extrusion of steel billets. Economic feasibility and effectiveness of the introduction primarily depends upon the resistance of stamping tool. There are the results of researches of the ways to increase durability of tools for cold extrusion, which performed in four different directions: to improve the structure and fabrication technology of stamps; surface preparation of billets for extrusion; improving complex of properties material of stamping tool using heat treatment; improvement of deformability of material of billets. There are proposed the procedure of heat treatment which increases the service life of stamping tools from high-speed steel M2. Moreover there are proposed the conditions of heat treatment for receipt of uniform structure of globular pearlite in hot – rolled and stamping with different degree steel for improvement of deformability. The results of the research tested and introduced in the manufacture on example of brake sleeve of bicycle.
Cold extrusion – one of the most effective low-waste manufacturing processes of steel products, the introduction of which in return for machining and hot stamping provides a significant productivity growth, increases the coefficient of metal use and the quality of the surface. There are considered the factors, which influence on the effectiveness of the introduction processes of cold extrusion of steel billets. Economic feasibility and effectiveness of the introduction primarily depends upon the resistance of stamping tool. There are the results of researches of the ways to increase durability of tools for cold extrusion, which performed in four different directions: to improve the structure and fabrication technology of stamps; surface preparation of billets for extrusion; improving complex of properties material of stamping tool using heat treatment; improvement of deformability of material of billets. There are proposed the procedure of heat treatment which increases the service life of stamping tools from high-speed steel M2. Moreover there are proposed the conditions of heat treatment for receipt of uniform structure of globular pearlite in hot – rolled and stamping with different degree steel for improvement of deformability. The results of the research tested and introduced in the manufacture on example of brake sleeve of bicycle.
Опис
Ключові слова
холодное выдавливание, стойкость, штамповый инструмент, конструкция, термическая обработка, штампуемость, зернистый перлит, быстрорежущая сталь, отпуск, cold extrusion, resistance, stamping tools, structure, heat treatment, deformability, globular pearlite, high-speed steel, tempering
Бібліографічний опис
Кузьменко Е. А. Факторы, определяющие стойкость штампов холодного выдавливания / Е. А. Кузьменко, В. И. Кузьменко, Т. А. Христофорова // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Сер. : Інноваційні технології та обладнання обробки матеріалів у машинобудуванні та металургії = Bulletin of National Technical University "KhPI" : coll. works. Ser. : Innovative technologies and equipment handling materials in mechanical engineering and metallurgy. – Харків : НТУ "ХПІ", 2016. – № 31 (1203). – С. 50-56.