| 摘要 |
FIELD: plastic working. ^ SUBSTANCE: the invention is pertaining to the field of plastic working, in particular, to constructions of the press molds and may be used for non-ferrous metals sward briquetting. The press mold contains a punch and a negative mould. The negative mould consists of two parts: the upper part and the. The lower part of the negative mould is made in the form of single-band hyperboloid of rotation. The diameter of the equator of the hyperboloid is equal to the diameter of the upper cylindrical part of the negative mould. The ratio of the diameter of the throat opening to the diameter of the equator makes 0.9-0. 95. In the result the invention ensures decreased friction and increased service life of the press mold. ^ EFFECT: the invention ensures decreased friction and increased service life of the press mold. ^ 1 dwg |
