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operational parametres vibrating himiko-mechanical tverdosmazochnogo coverings

At drawing ViHMTP actuating medium affecting on a processed surface is carried out through the finely dispersed layer which composition depends on a covering aspect. So, at drawing tverdosmazochnogo coverings as a layer the powder of disulphide of molybdenum serves.

For question transpiring ovlijanii the temperature factor it was necessary to spend special experiences on such experimental installation which would allow to carry out reception of data of various temperature level without entering any

Constructive changes in a measurement and machining technique to expel agency of ectogenic factors.

The instant temperature in the contact zone, computed by formula M. M Saverina for coverings, is in limits 300-430 To.

Measurement of temperature of actuating medium was defined at regular intervals at work of installation within five hours at amplitude of oscillation A = 2,5 mm and A = 4 mm (fig. 5.13).

Fig. 5.13. Change of temperature of actuating medium on processing time at amplitude 1-Aa=2,5 mm; 2-Aa=4 mm

The analysis has shown, that at work of installation the temperature of the working chamber grows, and within three hours attains the maximum value. Then the temperature is stabilised and at the further machining of changes is not observed. The greatest value of temperature 330 To is noted at work with amplitude of 4 mm that grows out of increase in speed of circulation of actuating medium.

As molybdenum disulphide at certain temperature can oxidise to three-molybdenous oxide MoO, 3 reducing antifrictional properties Мо32, agency of instant temperature in a contact zone on its thermal stability is defined. It is with that end in view spent rentgenostrukturnyj and chemical analysis on presence of oxidated molybdenum МоО3 in disulphide of molybdenum after 200 hours of tests.

The phase analysis was spent by a photomethod on X-ray diffractometer URS-70K1 in chamber RKD at SiKa - radiation by a standard technique. Assay values are presented on fig. 5.14 and to tab. 5.3.

Fig. 5.14. Difraktogrammy a powder ∖1υS2, removed in chamber RKD at SiKa - излучении:1 - an initial powder; 2 - after 5 business hours at a room temperature; 3 - initial, nagretyj to t =450 To; 4 - after 5 business hours with preheating to 450 To

Table 5.3

The sample

1

The sample

2

The sample

3

The sample

4

The sample

5

The tabular

Value

6,15 6,05 6,15 6,15 6,24 6,15
3,05 3,02 3,03 3,02 3,02 3,075
2,72 2,71 2,73 2,73 2,73 2,74
2,65 2,66 2,66 2,68 2,67
2,50 2,51 2,50 2,50 2,51 2,50
2,27 2,27 2,27 2,27 2,28 2,28
2,23 2,27
2,04 2,04 2,04 2,04 2,04 2,05
1,82 1,82 1,82 1,83 1,83 1,83
1,74 1,75 1,75 1,76
1,69 1,69 1,69 1,70
1,64 1,64 1,64 1,64 1,641
1,58 1,57 1,57 1,57 1,58 1,581
1,53 1,52 1,53 1,53 1,53 1,538
1,48 1,47 1,48 1,48 1,4784
1,43 1,43 1,43 1,43
1,36 1,37 1,36 1,36 1,3688
1,34 1,34 1,34 1,34 1,3401
1,29 1,29 1,29 1,29 1,299 1,2983
1,25 1,25 1,25 1,25 1,255 1,2513
1,22 1,22 1,22 1,22 1,2224
1,19 1,20 1,19 1,19 1,199 1,1960
1,14 1,14 1,13
1,10 1,10 1,10 1,10 1,10 1,1015
1,08
1,05 1,05
1,03 1,04 1,03 1,03 1,03 1,0215
1,02 1,03 1,02
1,00 1,000 1,00 1,00 1,00 1,0029
0,977
0,968 0,970 0,967 0,967 0,9704
0,950 0,949 0,952 0,956 0,952 0,9534
0,921 0,921
0,911 0,911 0,911 0,914 0,913 0,9124
0,900 0,902 0,9024
0,893 0,893 0,8939
0,876 0,875 0,8783
0,867 0,865 0,8658
0,858 0,858
0,839 0,839
0,833 0,833
0,826 0,825

0,803

0,790

0,803

0,790

The condition of powders defines operational possibilities ViHMP. On the basis of the gained data of X-ray crystal analysis it is possible to draw a leading-out that samples represent monophase powders Мо32.

Neither powder oxidation, nor its decomposition for detection of new substances does not occur to formation of sufficient quantities in one of investigated powders. Dispersity of areas of a coherent scattering and distortion of a crystal lattice is various, that is defined by degradation extent difraktsionnyh reflexes at the set angles of reflexion. Powders № 2, 4, 5, exposed to vibrating machining, possess the big distortion of a crystal lattice and dispersity of blocks, but agencies of this fact on a resource and other characteristics ViHMP is not installed.

Quality of coverings is influenced by oxidation level of corpuscles of a powder. For definition of presence of the oxidated powder and its quantitative maintenance chemical analysis under the instruction developed by manufacturer has been spent. The method is based on a lixiviation of the oxidated molybdenum by the hydrochloric acid diluted in a ratio 1:3. In a filtrate define the molybdenum maintenance kolorimetricheskim rodanidnym a method, applying in the capacity of reductant tiomochevinu.

Three powders were exposed to researches: initial at a room temperature, after 5 business hours of installation and after running time more than 200 hours. Results have shown, that presence of the oxidated molybdenum in a percentage relationship makes accordingly: 0,15; 2,04; 3,05. At work
Owing to powder crushing there is its small oxidation which changes eventually slightly. So, after 200 business hours the quantity of the oxidated powder has made only 3 %. Small количествоМ0Оз does not work upon antifrictional properties of disulphide of molybdenum as corpuscles oksida molybdenouses sink in weight Мо32 that eliminates their abrasive act. Analogous results have been gained Brentuejtom [32].

Observing higher education process oksida molybdenouses at ViHMO it is possible to note the following: as sulphur from the chemical party has the big affinity to elektronu, in the conditions of high activity and kontakntnyh loadings was possiblly joining additional elektrona to a molecule or atom of the sulphur, accompanied by a heat evolution, displacement of electronic shells under the influence of electric field, etc.

S + θ = ∙s ^ + 153 kcal.

The parametre of 153 kcal/g atom is the quantitative demonstration of affinity of sulphur to elektronu. Chemical formation oksida molybdenouses can be promoted by the additional energy which is gated out at joining elektrona to atom of sulphur. As acknowledging the raised adhesive properties of disulphide of molybdenum can serve such leading-out at drawing by its vibrating method and reference to first group ViHmP.

High cohesive resistance MoZgs is provided with metal not only forces Van-der-Vaalsa, but also electrostatic. These leading-outs will be co-ordinated with the electrostatic theory of the adhesion developed by B.V.Derjaginym and N.A.Krotovoj [60], and also results of the experimental data confirming presence of reaction between sulphur and metal with formation FeS in the presence of disulphide of molybdenum [102].

5.4.

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A source: 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

More on topic operational parametres vibrating himiko-mechanical tverdosmazochnogo coverings:

  1. the mechanism of formation vibrating himiko-mechanical tverdosmazochnogo coverings (ViHMTP) disulphide of molybdenouses
  2. 5.7. An estimation of a resource and durability of vibrating himiko-mechanical coverings
  3. recommendations about maintenance of quality and to application of vibrating production engineering for drawing of himiko-mechanical coverings
  4. formation vibrating himiko-mechanical oksidnogo coverings (ViHMOP)
  5. 5.12. Corrosion durability combined vibrating vysokoresursnogo himiko-mechanical oksidnogo coverings
  6. 1.4. Discussion of available sights on physical rules of mechanical chemistry of a solid with reference to process of the combined formation of himiko-mechanical coverings
  7. 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
  8. technological possibilities and prospects of use of a vibrating himiko-mechanical zinc covering
  9. the Feasibility report on efficiency of application combined vibrating himiko-mechanical oksidnyhcoverings
  10. Technical-economical analysis of results of use combined vysokoresursnyh himiko-mechanical coverings naosnove molybdenum disulphide
  11. 5.8. Power factors for maintenance of quality of the combined himiko-mechanical coverings
  12. Obosnovanna metodtv measurements paramearov propessov and characteristics of formed himiko-mechanical coverings
  13. CHAPTER 3. THE PHYSICAL AND MATHEMATICAL DESCRIPTION OF PROCESSES OF CREATION OF HIMIKO-MECHANICAL COVERINGS FOR VYSOKORESURSNYH PRODUCTS
  14. power conditions of modification of a blanket at formation of vibrating coverings
  15. 3.8. Features of the mechanism of formation vibrating himikoyomehanicheskogo oksidnogo coverings (ViHMOP)
  16. sampling of actuating mediums for maintenance of mechanical process of formation of coverings
  17. Technology of himiko-mechanical polishing of monocrystal germanium
  18. 5.10. Operational properties vysokoresursnyh combined oksidnyh coverings
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