4.2. Designing of processes for typical himikoyomehanicheskih vysokoresursnyh coverings
4.2.1. Vibratsionnoetsimiko-mechanical tverdosmdjuchnoe a covering
The schematical image on fig. 4.3 processes of formation of coverings gives the chance to size up visually the technological interconnections occurring vzamknutom volume of the chamber for vibroudarnogo of affecting.
Analysing the combined mechanism of formation of a layer of firm greasing of a layer structure at a friction and feature of process of vibrating machining in the environment of metal spheres, it is possible to present stage by stage a formation order tverdosmazochnogo coverings molybdenum disulphide as follows (fig. 4.2, 4.3).
Fig. 4.2. The Initial stages of conducting of calculations of technological regimes and formation vysokoresursnogo tverdosmazochnogo coverings МоБ2: mechanical contact and adsorption of a material of a covering; blanket activation;, change of microgeometry of a surface after stages 4 and 5
Fig. 4.3. The Final stages of conducting of calculations of technological regimes and formation vysokoresursnogo tverdosmazochnogo coverings МоБ2: formation of a boundary layer; formation of a layer of greasing and covering formation
Stage 1. Mechanical contact and adsorption of corpuscles MoS2-3∂ecb is required to count or appoint regimes of mechanical and chemical processes, chtobyv the moment of the application of external mechanical loading, thanks to force of a collision of a sphere with a surface of a processed material, occurred settlement elastic, plastic and is elastic-flowage in a contact zone. Simultaneously at the expense of rapprochement of put disulphide of molybdenum with a detail there is an adsorption of corpuscles of a powder on a metal surface (fig. 4.2,).
Stage 2. Activization of a blanket of metal. Surface activization is carried out vibroudarnym by a method as a result of a plastic straining and increase in density of dislocations, destructions of oxide films and formation juvenilnyh sections of a surface, increase in the square of contact (fig. 4.3,).zdes are required the technological regimes compatible to the first stage of calculation.
Stage 3. Formation of a boundary layer. This stage demands a substantiation of the energy directed on comminution kristallitov МоБ2, destruction by mechanical act of actuating medium of chemical oxide films of metal in microrelief dints, a heading of corpuscles of a powder and their adsorption to a blanket of the made active metal (fig. 4.3,).
Stage 4. Formation of a layer of greasing. This stage demands the regimes outflowing from expenses of energy on consolidation of corpuscles of the put covering, comminution kristallitov, chemical and diffuzionnoe their adhesion with each other, formation of a difficult layer of greasing (fig. 4.3,).pri it parametres of regimes should be compatible.
Stage 5. Formation of a blanket of a covering. As a result of sliding, implementation of internal and external energy of the combined process of a corpuscle of actuating medium is oriented concerning a processed surface, a corpuscle of a powder by a datum plane friction surfaces (fig. 4.3,) keep within in parallel and the profile, resulted on fig.
4.2, poz.v and is formed4.2.2. Tehhologijapolluennjavibbatsijunnogo hhmiko-mehanncheekogo tstsikooogo coverings (ViHMTSP)
Stages of formation of a vibrating himiko-mechanical zinc covering, opredeljashchie a procedure of payments of regimes and designing of a process and its feature, it is possible to present as follows (fig. 4.4).
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Fig. 4.5. Stages of conducting of calculations of technological regimes and formation of a vibrating himiko-mechanical zinc covering
Stage 1. Himiko-mechanical contact of details to actuating medium. As a result of input of external energy at the moment of the application of mechanical loading owing to a collision of spheres with a surface of a processed material there is a blanket destruction in a contact zone therefore on a metal surface ions adsorb, molecules from a solution, that opens possibility of a leakage of chemical processes (fig. 4.5,).zdes power parametres of chemical affecting are defined
Regimes of a mechanical component of the combined process, as shown in section 4.1.
Stage 2. Activation and clearing of a blanket of metal. Surface activation occurs as a result of mechanical affecting of actuating medium (for example, porcelain spheres). Depending on used regimes the density of dislocations and the active centres with simultaneous activation of ions and solution molecules (Zn ++, Zn) can increase, that should be considered at appointment of chemical regimes of transformation of a blanket.
As a result of dynamic affecting and actuating medium mixing there is a supply of a fresh solution and tap of the completed. Together with a spent solution from a metal surface fatty pollution leave combination of processes of clearing of pollution and martempering of quality of a blanket (fig. 4.5,), thus, is carried out, that also demands expenses of energy and should be considered at appointment of regimes at designing of processes for concrete details in a cut of the offered methodology.
Stage 3. Regimes of formation of a covering. Here it is necessary to consider, that uchastkipoverhnosti metal with high activity adsorb ions Zn ++ which, being discharged, are precipitated in the form of a zinc covering. It defines power inputs on a chemical component and should be considered at designing tehprotsessa.
For calculation of mechanical affecting it is necessary to consider, that the part of energy of the vibrating medium is spent for input to a surface of metal of a zinc powder which adsorbs and under the influence of mechanical force is fixed on a metal surface (fig. 4.5,).
Stage 4. Regimes of formation of the set thickness of the combined covering. In conditions vibrovolnovogo affectings and activations of components of process of sherardizing there is a formation and growth tsinkovogopokrytija where participate chemical and mechanical made which it is required to design regimes and a process, to consider energy on
Constant inflow of a fresh solution (suspension) of a zinc powder to a metal surface that provides concentration balance on which speed of formation of a covering depends. Process is accompanied by some razryhleniem and dissolution of a zinc covering under the influence of an active ion of chlorine and moving porcelain spheres. The actuating medium heavy traffic calls consolidation of a zinc powder that is shown on fig. 4.5,
Stage 5. Regimes for reception of demanded parametres of blankets ViHMTSP. Under the influence of vibrating affecting and increase in a thickness of a covering activity of growth and productivity of operation decreases. Thus there can be accompanying processes, in particular the corpuscles of zinc having the weak clutch with the basic covering, the part of a covering and small roughnesses are rumpled, strained, leaves, the roughness of a processed surface as a result can change and to increase its luster, as is shown in fig. 4.5, d.
4.2.3.
More on topic 4.2. Designing of processes for typical himikoyomehanicheskih vysokoresursnyh coverings:
- CHAPTER 4. DESIGNING OF THE COMBINED HIMIKOYOMEHANICHESKY PROCESSES OF DRAWING VYSOKORESURSNYH OF COVERINGS
- 4.1. Methodology of construction of processes of reception vysokoresursnyh the combined coverings
- CHAPTER 3. THE PHYSICAL AND MATHEMATICAL DESCRIPTION OF PROCESSES OF CREATION OF HIMIKO-MECHANICAL COVERINGS FOR VYSOKORESURSNYH PRODUCTS
- IVANOV Vladimir Vitalevich. PROCESSES And METHODOLOGY of CREATION of BLANKETS VYSOKORESURSNYH of PRODUCTS BY VIBRATING FORMATION of COVERINGS by the COMBINED HIMIKO-MECHANICAL AFFECTING. The dissertation on competition of a scientific degree of a Dr.Sci.Tech. Rostov-on-Don 2017, 2017
- the formation mechanism vysokoresursnyh coverings
- 5.10. Operational properties vysokoresursnyh combined oksidnyh coverings
- 1.3. Experience of creation and application of coverings with chemical affecting for reception vysokoresursnyh products
- a role of coverings at creation vysokoresursnyh products
- 1.6. Survey of available intellectual materials in the field of creation of the combined coverings for vysokoresursnyh products
- Technical-economical analysis of results of use combined vysokoresursnyh himiko-mechanical coverings naosnove molybdenum disulphide
- 2.1 Organizational designing on the basis of use of typical block diagrammes
- CHAPTER 5. AGENCY OF TECHNOLOGICAL PARAMETERS OF THE COMBINED PROCESS ON OPERATIONAL PARAMETERS VYSOKORESURSNYH OF COVERINGS
- CHAPTER 1. THE ANALYSIS OF THE CONDITION OF THE QUESTION AND RESULTS OF RESEARCHES OF PROCESSES OF DRAWING OF COVERINGS
- 1.3 Reengineering of business processes — a basis of the dynamic approach to designing of organizational structures
- ordering of aspects of coverings on mechanisms of their formation
- requirements to the form according to Typical law JUNSITRAL
- classification vibraiionnyh hhmiko-mehanicheekih coverings