THEORETICAL DEFINITION FOR QUALITY PARAMETERS OF SURFACE LAYER IN PARTS, TOOL-ELECTRODE WEAR AND PROCESS PRODUCTIVITY AT ELECTROEROSION MACHINING
Autor: | Sergey Syanov |
---|---|
Rok vydání: | 2016 |
Předmět: |
Engineering
business.industry Theoretical definition media_common.quotation_subject Process (computing) Mechanical engineering 02 engineering and technology 01 natural sciences 010309 optics 020303 mechanical engineering & transports 0203 mechanical engineering Machining 0103 physical sciences Electrode General Materials Science Quality (business) Surface layer business Productivity media_common |
Zdroj: | Bulletin of Bryansk state technical university. 2016:67-73 |
ISSN: | 1999-8775 |
DOI: | 10.12737/18261 |
Popis: | An electric erosion process serves as a basis for electroerosion machining (EEM) as a result of which occurs a material removal from the surface of a product. The destruction of electrode surface takes place at the expense of melting and partial evaporation of material. As a result of this the cavities called holes remain on a surface and also changes arise on the surface layer of a billet. A microrelief of a surface is formed with considerable quantity of mutually covered holes having different geometrics the knowledge of which allowed determining height and pitch parameters of roughness. Upon a corrugation formation at electroerosion machining has an influence a lot of factors which may be or may be not depending on a machining procedure and on whether machining is to be carried out on solid material or a surface prepared earlier should be machined. To the basic factors affecting the surface corrugation at EEM should be referred parameters conditioned on the influence of a billet initial corrugation, tool initial corrugation, influence of fluctuations in technological modes of machining. Having defined these parameters it should be possible to compute a corrugation at EEM. To analyze microhardness and residual stresses at EEM, first, it should be necessary to know a temper-ature field distribution in the surface layer of a product that will allow defining quality parameters mentioned above. To determine volumetric wear of a tool-electrode and EEM productivity it should be necessary to know the following: physical stress-strain properties of work material and material of a tool-electrode; modes of electro-erosion machining; properties of dielectric liquid. |
Databáze: | OpenAIRE |
Externí odkaz: |
načítá se...