Electrode for electrical discharge machining and process for man

Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Forming nonelectrolytic coating before depositing...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

204280, 204290R, 427123, 4274431, 4274432, 445 49, 445 58, 205215, 205291, C25D 500, C25D 534, C25D 1710, C25D 1712

Patent

active

051085550

ABSTRACT:
Disclosed is an electrode for electrical discharge used for diesinking, comprising an electrode member produced by subjecting a base and binder of gypsum hemihydrate powder and a filler of conductive metal powder to modeling and/or molding and setting into a desired form of electrode, and followed by plating the electrode member with a conductive metal; and a process for manufacturing the same, wherein a gypsum hemihydrate powder, a gypsum dihydrate powder in an amount of 1% by weight of the gypsum hemihydrate powder and a conductive metal powder are kneaded in vacuo, and water is added thereto to continue further kneading in vacuo, followed by casting into a mold having a predetermined shape transferred thereon to carry out hydration, molding and setting to provide an electrode member; after the electrode member is dried, it is plated with a conductive metal to enhance mutual continuity in the conductivity of the former conductive metal powder and also to form a thin metal layer on the surface of the electrode member. Since the present electrode for electrical discharge machining is based on a gypsum, even one having a subtle and complicated shape can easily be produced using an easy-to-make mold made of a silicone rubber and the like with high accuracy at low cost, so that it is particularly suitable for producing dental crown and bridge one by one. Further, the strength of the electrode is enhanced synergistically by the base of gypsum hemihydrate and the conductive metal layer formed on the surface of the electrode member, allowing precise electrical discharge machining of hard materials such as titanium at the desired speed which was impossible by use of the conventional electrode impregnated with a conductive solution containing a graphite and the like dispersed therein instead of the plating treatment.

REFERENCES:
patent: 3244852 (1966-04-01), Herterick et al.
patent: 3496987 (1970-02-01), Peterson et al.
patent: 3650736 (1972-03-01), Broom
patent: 3689729 (1972-09-01), Neward et al.
patent: 4301356 (1981-11-01), Tanei et al.
patent: 4373127 (1983-02-01), Haskett et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electrode for electrical discharge machining and process for man does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrode for electrical discharge machining and process for man, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrode for electrical discharge machining and process for man will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1246172

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.