EP 0941373 B1 20010905 - METHOD FOR OBTAINING WELL-DEFINED EDGE RADII BY ELECTROPOLISHING
Title (en)
METHOD FOR OBTAINING WELL-DEFINED EDGE RADII BY ELECTROPOLISHING
Title (de)
VERFAHREN ZUR ERZIEHLUNG GENAU DEFINIERTER KANTENRADIEN MITTELS ELEKTROPOLIEREN
Title (fr)
PROCEDE PERMETTANT D'OBTENIR DES RAYONS D'ARRONDIS BIEN DEFINIS PAR POLISSAGE ELECTROLYTIQUE
Publication
Application
Priority
- SE 9700840 W 19970522
- SE 9602278 A 19960607
Abstract (en)
[origin: WO9746741A1] The present invention relates to a method for edge rounding of cutting tool inserts, in combination with a high surface finish over the whole insert, of cemented carbide or titanium based carbonitride alloys. An electrolytic method is used with an electrolyte which provides an even removal of both binder phase and hard constituent phases such as perchloric (HC1O4) or sulphuric (H2SO4) acid, 15-50 vol %, in methanol or other organic liquid. The method is easier to control than conventional mechanical methods and is particularly useful for providing very small edge radii of about 10 mu m in combination with a high surface finish over the whole insert which can not be made by mechanical or other electrolytic methods.
IPC 1-7
IPC 8 full level
CPC (source: EP)
Citation (examination)
WO 9618759 A1 19960620 - SANDVIK AB [SE]
Designated contracting state (EPC)
AT CH DE FR GB IT LI SE
DOCDB simple family (publication)
WO 9746741 A1 19971211; AT E205265 T1 20010915; DE 69706558 D1 20011011; DE 69706558 T2 20020418; EP 0941373 A1 19990915; EP 0941373 B1 20010905; JP 2000514866 A 20001107; SE 511208 C2 19990823; SE 9602278 D0 19960607; SE 9602278 L 19971208
DOCDB simple family (application)
SE 9700840 W 19970522; AT 97927531 T 19970522; DE 69706558 T 19970522; EP 97927531 A 19970522; JP 50047998 A 19970522; SE 9602278 A 19960607