| 摘要 |
FIELD: powder metallurgy, namely processes for making low-porosity articles, possibly manufacture of hot deformed pistons of powder material on base of aluminum. ^ SUBSTANCE: process comprises steps of making porous blank with variable height of its end cross section with use of shaped chamfered lower punch; subjecting blank to heating and hot forming. ^ EFFECT: enhanced quality of articles. ^ 1 dwg, 1 ex |
