Risers are not usually required due to the nature of the process; because the molten metal vaporizes the foam the first metal into the mold cools more quickly than the rest, which results in natural directional solidification.
(Topic: Metallurgy)
Behavior, damage and fatigue life assessment of lost foam casting
aluminum alloys under thermo-mechanical fatigue conditions
Dynamic and post-dynamic recrystallization under hot, cold and severe plastic deformation conditions
- 1.
Динимическая и пост динамическая рекристаллизация в условиях высокой , низкой температуры и значительной пластической деформации.
translation added by Валерий КоротоношкоGold en-ru
Для того чтобы студенты высыпались, я думаю нужно изменить время начала учебы, например, перенести с 7:30 часов утра на 9 часов
- 1.
In order to give students enough time for sleep, I suppose you need to change the start time of study, for example, from 7:30 a.m. to 9 o'clock
translation added by Евгений ЖабаровскийBronze ru-en - 2.
To let students have enough sleep I think the beginning of the lectures should be shifted from 7.30 a.m. to 9 a.m.
translation added by Elena AbashkinaBronze ru-en
Большинство студентов спят меньше 7 часов, потому что во многих школах учеба начинается раньше 8 часов утра
- 1.
Most students sleep less than 7 hours, as the classes in many schools begin before 8 o'clock.
translation added by Vladislav JeongGold ru-en - 2.
most of students sleep less than 7 hours because of there studies starts earlier of 8 am in most schools
translation added by Ilyas Kussanov