Actual Problems in Machine Building 2015 No. 2

Actual Problems in Machine Building. 2015. N 2 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 102 FEATURES OF MANUFACTURING ACCURATE THERMOSTABLE DISPENSABLE PATTERNS BY PRESSING SINGLE-COMPONENT WAX COMPOSITIONS Sapchenko I.G., D.Sc. (Engineering), Associate Professor, e-mail: igor.sapchenko@mail.ru Zhilin S.G., Ph.D. (Engineering), Associate Professor, e-mail: zhilin@imim.ru Komarov O.N., Ph.D. (Engineering), Associate Professor, e-mail: olegnikolaevitsch@mail.ru Institute of Machinery and Metallurgy, Russian Academy of Sciences (Far Eastern Branch), 1 Metallurgov st., Komsomolsk-on-Amur, 681005, Russian Federation Abstract Dispensable patterns used in special kinds of casting may be obtained by polymeric powder pressing. Such pressings are characterized by extra dimensional and geometric accuracy. Their surface roughness is determined by the parameters of shape-generating parts of the matrix in which the pressings were produced. Various fractions and compositions of polymeric powders which provide different physical and mechanical properties of pressings were used to manufacture the pressings. These differences are provided by elastic aftereffects of the pressed powder material. Keywords dispensable pattern, dimensional and geometric accuracy, powder pressing, elastic aftereffect, casting