中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

4 records (took 0.016 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE1752729A1

    公开(公告)日：1971-05-19

    申请号：DE1752729

    申请日：1968-07-06

    Applicant: IBM DEUTSCHLAND

    Inventor： HYMES LAWRENCE ,  LEE MEHL DANIEL

    IPC: B21J5/00 ,  B22D17/00 ,  B21C23/00

    Abstract: 1,221,538. Extruding; working at specified temperatures; making typewriter parts. INTERNATIONAL BUSINESS MACHINES CORP. 24 May, 1968 [14 July, 1967], No. 24853/68. Headings B3A, B3P and B3V. [Also in Division C7] A method of forming a metal article particularly a typewriter part comprises pressing metal from a heated stock 20 through a passageway 15 and into a heated forming cavity 11, the pressure causing the metal to be passed into the cavity as a ribbon which is then deformed by bending and pressed into a solid body having a shape conforming to that of the internal surface of the cavity, the metal being maintained wholly in a solid crystalline phase throughout the process. The stock metal and forming cavity are preferably heated such that the metal used attains a temperature at which it becomes superplastic. Metal pellets may also be used in the process. Preferred metals are by weight 78% zinc and 22% aluminium; 67% aluminium and 33% copper; 88% aluminium and 12% silicon; or 62% copper and 38% zinc; 59% copper and 41% zinc or 52% copper and 48% zinc. Preferred forming temperatures for the Zn: Al alloy are 500‹ to 532‹ F. and for the Al : Si alloy 900‹ to 1040‹ F.

    3.
    发明专利
    未知

    公开(公告)号：DE1558785B2

    公开(公告)日：1971-07-29

    申请号：DE1558785

    申请日：1967-03-09

    Applicant: IBM

    Inventor： STUART FIELDS JUN DAVIS ,  LEE MEHL DANIEL

    IPC: C21D1/00 ,  B21J1/06 ,  C22C18/04 ,  C22F1/00 ,  C22F1/16

    Abstract: 1,125,072. Improving physical properties; working at specified temperatures. INTERNATIONAL BUSINESS MACHINES CORP. 13 March, 1967 [28 March, 1966], No. 11617/67. Heading B3V. [Also in Division C7] Alloys of zinc and aluminium capable of showing superplasticity are solution treated, quenched and worked as by forging, rolling or extrusion, at less than 400‹ F. Treatment of the eutectoid composition 78% Zn, 22% A1, with or without 0.02% Mg or 0.05% Mn, is particularly referred to. Solution treatment may be carried out in an oven or in a heated press, while quenching may be by immersion or by spray. As exemplified, test pieces were given a deformation of 50% by rolling; for comparative purposes rolling was also carried out at 500‹ and 600‹ F.

Patent Agency Ranking