Вплив суміщення наводнювання з іншими видами обробки розплаву на формування та якість виливків з алюмінієвих сплавів: Processy litʹâ, 2019, Tom 135, №3, p.3-13

• Дата: 2019
• Автор: Котлярський, Ф. М.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine 2019
• Теми: алюмінієві сплави; виливки; розплав; наводнення; модифікування; рафінування; газоусадочні дефекти
• Онлайн доступ: https://plit-periodical.org.ua/index.php/plit/article/view/129
• Назва журналу: Casting Processes

Received 02.04.2019 УДК 669.715:669.788 It has been experimentally proved that hydrogenation of liquid aluminum alloys before pouring into molds can reduce and even eliminate the defect castings in hot brittleness, lattices, leaks of metal-consuming units. However, this usually does not draw attention to the fact that the same melt in parallel can be modified, including the introduction of chips, or refining. Such a combination may have an unexpected effect on the quality of the casting. The work shows that combining the hydrogenation with the introduction of chips leads to a sharp increase and uneven distribution of gas porosity, which is undesirable. Flux modification due to the reduction of Al2O3 particles in the melt accelerates the diffusion removal of hydrogen, therefore, the melt should be cast soon after hydrogenation. Combining with strontium modifying at optimum holding can significantly increase strength and ductility. A method has been developed for determining the length of pores, which helps to understand the mechanisms of their formation and improve the tightness of cast products.