公开(公告)号：US3647573A

公开(公告)日：1972-03-07

申请号：US3647573D

申请日：1969-06-05

Applicant: BELL TELEPHONE LABOR INC

Inventor： FUCHS EDWARD O ,  SWISHER JAMES H

IPC: B22F1/00 ,  B22F3/00 ,  H01F1/06 ,  B22F7/00 ,  H01F1/08

CPC classification number: H01F1/06 ,  B22F1/0003 ,  B22F3/001 ,  B22F2998/00 ,  B22F5/12

Abstract: A BRONZE-IRON COMPOSITE CONTAINING FROM 5 TO 75 VOLUME PERCENT IRON, WHEN PRODUCED BY; MIXING FINE POWDERS OF BRONZ AND IRON OXIDE, COMPACTING THE MIXTURE, REDUCING THE IRON OXIDE TO METALLIC IRON, SINTERING THE REDUCED COMPACT TO A BILLET, FOLLOWED BY COLD WORKING THE BILLET TO AN AREA REDUCTION IN EXCESS OF 96 PERCENT, EXHIBITS GOOD PERMANENT MAGNET PROPERTIES AS WELL AS EXCELLENT MECHANICAL STRENGTH, AND CORROSION RESISTANCE.

公开(公告)号：US3697255A

公开(公告)日：1972-10-10

申请号：US3697255D

申请日：1970-11-17

Applicant: WESTERN ELECTRIC CO ,  BELL TELEPHONE LABOR INC ,  EDWARD O FUCHS ,  WILEY M BALDWIN ,  DONALD J SHARP ,  JAMES H SWISHER

Inventor： BALDWIN WILEY M ,  FUCHS EDWARD O ,  SHARP DONALD J ,  SWISHER JAMES H

IPC: C22B34/24 ,  C22B7/00 ,  C22B51/00 ,  C22C1/06

CPC classification number: C22B34/24

Abstract: SCRAP TANTALUM BODIES HAVING IMPURITIES THEREIN ARE RECLAIMED AS SUBSTANTIALLY PURE TANTALUM METAL BY A PROCESS WHICH INCLUDES IMMERSING THE BODIES IN A MOLTEN METAL SUCH AS CALCIUM OR MAGNESIUM AT ELEVATED TEMPERATURES, AND UNDER NON-OXIDIZING CONDITIONS FOR A PROLONGED PERIOD OF TIME SUFFICIENT TO CAUSE ENTRAPPED IMPURITIES WITHIN THE BODY TO DIFFUSE OUT AND REACT WITH THE MOLTEN METAL.

公开(公告)号：US3342050A

公开(公告)日：1967-09-19

申请号：US45894565

申请日：1965-05-26

Applicant: BELL TELEPHONE LABOR INC

Inventor： FUCHS EDWARD O ,  JACK ROBERT F ,  OLSEN KARL M

IPC: B21C1/00

CPC classification number: B21C1/00 ,  B21C1/006