Положення виливка у формі з різною товщиною стінок
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Дата
2018
ORCID
DOI
10.20998/2413-4295.2018.16.14
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПІ"
Анотація
Метою роботи є дослідження впливу ливникової системи на процес отримання якісного різностінного сталевого виливка у разових формах. В ході роботи було розглянуто основні технологічні моменти розрахунку та проектування ливникової системи, було спроектовано експериментальну відливку, для якої було розраховано та спроектовано декілька ливникових систем та місць живлення. Кожний варіант спроектованої технології було промодельовано. В ході порівняльного аналізу можливої пористості у виливку за критерієм Ніяма було обрано найбільш раціональне положення та місце живлення для експериментального виливка Отримані дані можна використовувати для прискорення проектування та покращення якості отриманих виливків такої конструкції як експериментальний зразок.
Modern trends of development of mechanical engineering is aimed at reducing the use of metal parts, but the requirement for strength characteristics also increase. For such requirements before the designers and technologists is becoming a number of complex issues that need to be addressed at the design stage of the technology of obtaining castings. The aim of this work is to study the effect of casting system on the process of obtaining quality different side steel castings in one-off forms. In the course of work were considered the main technological aspects of calculation and design of casting system was designed and built by experimental casting, for which it was designed and engineered several casting systems and feeder places. Each option is designed technology was simulated. In the comparative analysis of possible porosity in the casting on the Niyama criterion was chosen as the most rational position and place of power for the experimental castings Obtained data can be used to accelerate the design and improve the quality of obtained castings of this design as an experimental sample. Basic requirements for the design of casting system for steel castings can be formulated as follows: the supply of metal to the mold cavity should be carried out at high speed, but smoothly and in places where the heating will enhance the effect directional solidification of the casting. The direction of flow of the liquid steel in the mold cavity should be one-sided, which ensures the removal of the application from gases and nonmetallic inclusions, for example, the tangential inlet casting system should not impede the shrinkage of the casting, thereby increasing internal stress. The design of the feeders should provide die casting through the filled channel. The consumption of the metal and its cooling in the runner channels should be minimal.
Modern trends of development of mechanical engineering is aimed at reducing the use of metal parts, but the requirement for strength characteristics also increase. For such requirements before the designers and technologists is becoming a number of complex issues that need to be addressed at the design stage of the technology of obtaining castings. The aim of this work is to study the effect of casting system on the process of obtaining quality different side steel castings in one-off forms. In the course of work were considered the main technological aspects of calculation and design of casting system was designed and built by experimental casting, for which it was designed and engineered several casting systems and feeder places. Each option is designed technology was simulated. In the comparative analysis of possible porosity in the casting on the Niyama criterion was chosen as the most rational position and place of power for the experimental castings Obtained data can be used to accelerate the design and improve the quality of obtained castings of this design as an experimental sample. Basic requirements for the design of casting system for steel castings can be formulated as follows: the supply of metal to the mold cavity should be carried out at high speed, but smoothly and in places where the heating will enhance the effect directional solidification of the casting. The direction of flow of the liquid steel in the mold cavity should be one-sided, which ensures the removal of the application from gases and nonmetallic inclusions, for example, the tangential inlet casting system should not impede the shrinkage of the casting, thereby increasing internal stress. The design of the feeders should provide die casting through the filled channel. The consumption of the metal and its cooling in the runner channels should be minimal.
Опис
Ключові слова
сталь, різностінність, ливникова система, пористість, моделювання, steel, casting system, porosity
Бібліографічний опис
Положення виливка у формі з різною товщиною стінок / І. С. Юсубов [та ін.] // Вісник Національного технічного університету "ХПІ". Серія: Нові рішення в сучасних технологіях = Bulletin of the National Technical University "KhPI". Series: New solutions in modern technology : зб. наук. пр. – Харків : НТУ "ХПІ", 2018. – № 16 (1292). – С. 96-101.