INVESTIGATION OF INFLUENCE OF MORPHOLOGY OF PARTICLES OF GRADED WASTE CHIPS FROM BRASSES L63 ON PROPERTIES OF BARS AND WIRES, OBTAINING BY METAL FORMING

There was investigated influence of morphology of graded waste chips from brasses L63 on properties of bars and wires obtained by means of chipless shaping. For research particles of chips were divided on 3 types: spiral, flaked and sawing. Any one of them was heated to temperature 450±5 °С and briquetted on the forgemaster. Afterwards briquettes were heated to temperature of 850 °C and extruded by means of direct method with resulting of bars diameters 8 and 6 mm. Herewith elongating ratios were equal to 32 and 56, correspondingly. Pressed bars were subject to drawing, as consequence diameter of wire was equal to 2 and 3 mm. Examination of bars and wire properties showed that waste chips from brasses L 63 could be raw materials during manufacturing of half-prepared products for hot extrusion and subsequent wire drawing. There was established that morphology of chips particles has a little effect on fabrication characteristics of briquettes, as well as on mechanical characteristics of pressed bars and obtained by means of drawing wire, mechanical properties of which meet demands of GOST 1066-90.

1. Биронт В.С., Аникина В.И., Загиров Н.Н. Материаловедение. Формирование структуры нового клас-са стружковых материалов: Учеб. пос. Красноярск: ГУЦМиЗ, 2005.

2. Биронт В.С., Аникина В.И., Загиров Н.Н. и др. Структуры гетерогенных стружковых материалов цветных сплавов. Новосибирск: Сибпринт, 2011.

3. Загиров Н.Н., Константинов И.Л., Иванов Е.В. // Изв. вузов. Цв. металлургия. 2012. № 2. С. 36—41.

4. Загиров Н.Н., Константинов И.Л., Иванов Е.В., Арефьев А.А. // Цв. металлы. 2012. № 10. С. 94—97.

5. Порошковая металлургия. Материалы, технология, свойства, области применения: Справочник / Под ред. И.М. Федорченко. Киев: Наук. думка, 1985.

6. Колпашников А.И., Ефремов А.В. Гранулированные материалы. М.: Металлургия, 1977.

7. Горелов В.М. Резание металлов. М.: Машиностроение, 1966.

8. Райков Ю.Н., Ахшимин Г.В., Полухин В.П., Гуляев А.С. Медные сплавы. Марки, свойства, применение: Спра-вочник / Под общ. ред. Ю.Н. Райкова. М.: ОАО «Институт Цветметобработка», 2011.

9. Шевакин Ю.Ф., Грабарник Л.М., Нагайцев А.А. Прес-сование тяжелых цветных металлов и сплавов. М.: Металлургия, 1987.

10. Брабец В.И. Проволока из тяжелых цветных металлов и сплавов: Справ. изд. М.: Металлургия, 1984.