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Machine translation
1. (WO1980000803) CASINGS AND PRESSED PIECES UTILIZED FOR THE EXTRUSION OF ARTICLES,IN PARTICULAR PIPES,AND METHOD FOR PRODUCING SUCH CASINGS AND PRESSED PIECES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000803    International Application No.:    PCT/EP1979/000083
Publication Date: 01.05.1980 International Filing Date: 26.10.1979
IPC:
B22F 3/12 (2006.01), B22F 3/20 (2006.01)
Applicants:
Inventors:
Priority Data:
2846658 26.10.1978 DE
Title (EN) CASINGS AND PRESSED PIECES UTILIZED FOR THE EXTRUSION OF ARTICLES,IN PARTICULAR PIPES,AND METHOD FOR PRODUCING SUCH CASINGS AND PRESSED PIECES
(FR) BOITIERS ET PIECES EMBOUTIES SERVANT A L"EXTRUSION D"OBJETS, EN PARTICULIER DE TUBES, ET PROCEDE DE FABRICATION DE TELS BOITIERS ET DE TELLES PIECES EMBOUTIES
Abstract: front page image
(EN)A casing for isostatically pressed pieces, which are intended for the extrusion of metal articles, in particular stainless steel metal pipes. The outer and inner envelopes (302, 304) of the casing (301) are comprised of a thin metal sheet: the outer envelope (302) at least has, along the periphery thereof, resistance characteristic substantially uniform in the axial direction and it consists of, in particular, a spiral welded pipe and is provided, preferably, with a bulge directed outwardly, opposed to the narrowing. It is provided, at least at the front part of the casing an intermediary piece which is made of one or several parts; this piece is obtained from ductile material or from a material obtained by compression of a powder. It is also provided a method for producing such casings and pressed pieces and a method for the extrusion of pipes as well as pipes obtained by such method.
(FR)Boitier pour des pieces embouties comprimees isostatiquement, ainsi que pieces embouties qui servent a l"extrusion d"objets metalliques, en particulier de tubes metalliques en acier inoxydable. Les enveloppes exterieure et interieure (302, 304) du boitier (301) sont composees d"une tole a paroi mince: l"enveloppe exterieure (302) au moins presente, le long de sa circonference, des proprietes de resistance a peu pres uniformes dans la direction axiale et elle consiste, en particulier, en un tube soude en spirale et elle est pourvue, de preference, d"un renflement dirige vers l"exterieur, oppose au retrecissement. Il est prevu, au moins a la partie frontale du boitier, une piece intercalaire qui est faite en une ou plusieurs parties; cette piece etant obtenue a partir d"une matiere ductile ou a partir d"une matiere issue de la compression d"une poudre. L"invention concerne egalement un procede de fabrication de ces boitiers et de ces pieces embouties et un procede d"extrusion des tubes ainsi que les tubes obtenus par ce procede.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)