Research of the Drawing Technology of Rectangular Profiles in the Roller Die with Shift by Roller Couples
Keywords:
twin-roller, smooth rollers, drawing, round workpieces, rectangular profiles, plastic flow, structure, grain, microhardness, heterogeneity, measurementsAbstract
Instability of plastic flow in deformation zone during drawing of a round workpiece in four-roller draw die with roller couples shifted along drawing axis is experimentally found and analyzed. This instability was determined by the cross-section contour. Plastic flow on the surfaces contacting with deforming rollers has a wave character. Plastic deformation in two couples of rollers affects insignificantly the structure of copper and 37 % Zn brass, while the structure of deformed titanium is anisotropic. Distrbution of microhardness is very inhomogeneous both in initial and in deformed strips.
References
Целиков, А.И. Теория прокатки / А.И. Целиков, А.И. Гришков. – М.: Металлургия, 1970. – 358 с.
Физическое металловедение. Вып. 3: Дефекты кристаллического строения. Механические свойства и металлов и сплавов / под ред. Р. Кана. – М.: Мир, 1968. – 484 с.
Смирягин, А.П. Промышленные цветные металлы и сплавы: справ. / А.П. Смирягин, Н.А. Смирягина, А.В. Белова. – М.: Металлургия, 1974. – 488 с.
