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Metalloobrabotka № 4 (94)/2016
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Metalloobrabotka № 4 (94)/2016


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Maslennikov I.  A.  Determination of  residual stresses  on  the treated surface  after turning plastic  materi als  blade  tool

The results of the research of the stress state in the cut- ting zone of ductile materials. Determination of the stress distribution in the workpiece, deformation of the material, temperature, residual stresses. The  research was  carried out using the theory of elasticity and  theory of plasticity.

Keywords: cutting process, stresses  in  the material, residual stresses.

Zvontsov I.  F.,  Ivanov К.  М.,  Serebrenitsky P.  P., Ponomarev D. A.,  Govorun  I. V.  Technological methods of  quality management in  the production  of  parts with deep  holes

A  physical model   of the progressive formation  of deep  precision holes  in  a  wide  range of sizes   and  pro- duct range in the form of pipes, cylinders, pistons, shafts and  rotating bodies. The  possibility of maintaining optimal  (given)  processing conditions  throughout the cycle, despite  the considerable length of the treatment length in  the  time  domain, i.e., implementation  processes of the sufficient reliability  of both  the quality  of manufacturing  and  labor productivity without the introduction of active  control  systems.  The  processes are based   on  the conversion technologies of special machinery, ensuring a quick and  cost-effective technological preparation of the existing production.

Keywords: quality management, deep  holes, and  continuous core drilling, preliminary and  finish boring, electrochemical diamond honing.

Vorobiyova G. A.,  Skladnova E.  E.  Research of  influence  aerothermoacoustic  treatment on  mechanical characteristics of wrought aluminium alloys

The  article  discussues the possibility  of applying aerothermoacoustic  (АТАО)  treatment fort  the mechanical characteristics aluminium alloy. The fundamentals of the technology ATAO, fields of its application. Analyzed the  possible options  for changing the sequence of application of the AТAO  and  heat treatment in  the scheme of the  technological  process, providing maximale hardening of the alloy  D1 The  changes in technology, hroviding maximum hardening of the alloy  D1 after thermal treatment and  aerothermoacoustic treatment (σв; σ0,2 increase by 15 % and  30 % respectively), while  the level  of relatif elongation equal to 13–14 %, which increases the specific strength of the alloy. This  ensures a  sufficient level  of technological plasticity of deformable aluminum alloys.

Keywords:   aluminium  alloy, mechanical characteristics, thermal treatment, aerothermoacoustic treatment

Naumov A. G., Latyshev V. N., Radnyuk V. S., Naumo- va  O. A.  Development  of  the theory  of  radical chain me chanism of action of cutting fluids in  metal cutting

This  article states the results of the researches for theory  of cutting fluid action  during metal  blade   cut- ting process. The article shows  that the cutting fluid mechanism involves not only  the chain-radical reactions and  formation  of separating lubricating films at the contact zone. The  cutting fluid component diffusion into the tri- bocontacting surfaces of the cutting tool and  material to be cut is  an  important factor in  terms of quality  of the cut surfaces and cutting-tool life.

Keywords: material cutting, cutting fluid, cutting fluid mechanism, surface phenomena, diffusion.

Yulmetova O. S.,  Sherbak A. G., Belash A. A.,   Lan- dau  B. E., Filippov A.  Y. Comparative  evaluation of  the electrical and  electrochemical ways to create a pattern on the electrostatic gyro  rotors

The  comparative assessment of the three ways  to create a pattern: electrochemical, photolithography and  laser marking. We describe the advantages and  disadvantages of their use  in the formation of a bitmap for electrostatic gyro rotor. The  principles of drawing comparisons based  on the use  of characteristics that underpin the efficiency of the  optoelectronic  assembly removably gyro information: curves nonlinearity, spatial maps reflection surface of the rotor, the equatorial cut pattern.

 

 

Keywords: rotor,  an  optical  pattern,  laser marking, electrochemistry, photolithography, optical system information retrieval, gyroscope.

Esipova N. E., Losnetzova N. N., Malkin  A. I., Pavel- ko G. F., Sobolev V. D., Toporov Yu. P. The effect of drop- let size of a dispersed phase  on the tribological properties of oleic acid  water emulsions

The  tribological  properties  of oleic  acid  water  emulsions were studied. It was found that the wear-preventive properties  of the emulsion depended on  the droplet  size of dispersed phase.

Keywords: emulsions, lubricoolants, wear.

Karatushin S. I., Spiridonov D. V., Pleshanova Yu. A. Comparative  analysis of  calculation  methods  for  the de- termination of residual stresses

In  the present study we  analyze the two  basic  methods  for the determination  of residual stresses  (RS)  — analytical  and  computer  simulation  technology.  These  two  interrelated areas provide a complete  picture of the stress-strain state (SSS).  Purely analytical  methods  are currently losing value due  to the complexity and  replaced by computer-based programs such  as ANSYS, PATRAN / NASTRAN. The  analysis is performed by calculating RS cemented  cylinder. Input data are the mechanical properties and  the dependence of carbon concentration distribution  in  the thickness  cemented  layer. The  basis of the analytical calculation on equations of elasticity theory and  the method is implemented using Mathcad. The computer method based  on ANSYS  software system used  a sample of the  witness,  the results of which grouting modeled in  the virtual sample. A sample of the witness  is  made  of the same  material as  the part, and  with  it cemented. Virtual  deformation  of the sample is  transferred to the workpiece. Application witness sample really only  in  the computer version. Comparison of methods for properly, a computer  method  is  based  on  a relatively  simple experiment  brings together conditions  of formation  of OH  in the sample-and witness the real details.

Keywords: residual stresses, grouting, specimen-wit- ness, analytical calculation, ANSYS.

Trufanov D. A.,  Kotov S.  A.,  Shalashov E. V.,  Cha- sov V. V. Receiving metallic powders by centrifugal atomi- zation using a rotating cup

There are atomized  powders of tin-lead  solder (Sn–61 %, Pb–39 %) and  tin bronze (Sn–20 %, Cu–80 %) obtained by laboratory installation of centrifugal atomization with the rotating cup  and  liquid cooling medium in this work. It is  shown that the process of spherodising melt drops when  sprayed in air mainly affects the nature of the metal (alloy)  such  as surface tension and  viscosity at the  melting  temperature. The  next parameters  were investigated: a shape, the size  of particles, compactibility and  molding capacity  of the received powders. The design of hybrid atomization installation to produce ultrafine metal powders with a spherical particle shape for 3D-printing is offered.

Keywords: centrifugal atomization, metallic powders, size  and  shape of particles, tin-lead  solder, bronze, rotating cup.

Kulikov M. Yu.,  Inozemtsev V.  E.,  Bocharov A.  A., Myo Naing O. Electro chemical mechanical shaping as a high potential in  the field of metal processing technology It is known about using different methods in forming processing of ferrous and  nonferrous metals and  their alloys. All  the nomenclature that used  methods of producing  parts with  a  stock  removal is  certainly  a set of significant volume. The  methods  of forming are different via  accuracy achieved  machining process, energy costs, time, cost of equipment, which ultimately determine the appropriateness  of the  choice of a particular method  of machining. Currently is known high efficiency of processing combined types.  This  is  the technological  approach allows  to vary widely, the values of the input parameters of the process of forming and managing the quality criteria. Therefore, improvement techniques of electrochemi- cal machining are interesting and their using will  be optimize the cost in  process forming.

Keywords: turning, milling, thread cutting, finishing,

surface roughness, combined treatment, electrochemical machining, quality parameters, modes.

Kul'kov A. A., Yevseyev D. G., Korytov A. Y. Evaluating the effectiveness of surface treatment process  before painting carriages

The  preliminary handling for wagon's  painting out- side  is an  actual problem for the railroad transport. The traditional way of preliminary processing is a shot blasting  method or sandblasting method in  combination with a chemical degreasing. In  this operation for a car building  and  car repair companies spend an  average of about half of the total funds of manufacturing for wagon's pain- ting. The  problem is that this process requires very a lot of material, particularly for degreasing, when  the wagon surface having common area about 250  m2  must have  application  of a  degreasing agent. Often  ineffective  application  leads   to high consumption  of the most  fluid and  imperfect  process of degreasing  wagon's  body  surface. The article describes a way to evaluate the effective- ness of preliminary handling for wagon's painting process.

Keywords: shot  blasting, grit,  degreasing, surface roughness, surface quality, adhesion.

Vasilkov D. V.,  Tarikov  I. Ya., Miller  A. S.  Problems of  expeditious  start in  production  of  orders  at the enterprise under control of quality management system

Problems of expeditious start in  production of orders at the enterprise, and also a role and a place of quality management system are considered at the solution of this task.

Keywords: production, orders, expeditious start, quality management system.