Kovalev

In this article the authors consider the basic questions of electrodiffusion physics. At cold plastic deformation, heat warms up the workpiece and the tool which are being machined, which, with different contact potential difference of the workpiece material and of the tool, generates an electromotive force (thermo-voltage) which usually increases along with increasing strain and temperature of contacting materials. The experimental data presented in this paper show that during the process of cold deformation of metals there occur thermocurrents from cutting (a related processing) which promote intensive tool wear. With the exclusion of their influence, tool life is increased by several times.

In this article the authors consider a well-known but still theoretically not grounded wire-wrap method. To solve this problem, the authors use actual conditions for formation and ensuring a hard close contact of connected elements, - namely, their elastic-plastic deformation and expected state of the process at the final moment. The authors supposed that provision of this contact will be achieved if the contact stress on the surface of the connected elements is not less than the elastic limit value and not higher than the ultimate stress value of the contacting materials. The paper presents the data for estimation by calculating the radius of the winding cylinder. Thus, radius of the winding cylinder is defined. Previously, this problem was solved only by selection.

 This article deals with the application of information models for different educational purposes and composing methodical recommendation based on their quality  estimations. Also the method for determination of visibility of the information representation is described. This method satisfies the state educational modern standard of distance learning «Nanoengineering». This standard defines new principles of training the specialists.