| 摘要 |
This method for integrating coaxial pieces of revolution, and a complex piece obtained thereby, by compaction of powder materials, consists in making a configuration of two or more heterogeneous pieces which have a different degree of dimensional variation under the influence of a heat treatment, imparting to each of the pieces certain complementary means of achieving their prior mutual assembly, carrying out a sintering of the whole which, by virtue of said thermal effect, the resulting dimensional variation is manifested by a relative contraction or expansion, in the radial direction, which is responsible for the mutual surface match up under pressure and an integrated union of the pieces. The resulting complex piece results from the assemblage and integration of two pieces of paramagnetic material with intercalation of another piece of magnetic material, both of them tubular and having certain mutually opposing complementary reliefs. <IMAGE>
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