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STRUCTURAL MATERIALS, METAL SCIENCE

Isakayev E. Kh., Mordynsky V. B., Penkova G. I., Tyuftyayev A. S., Filippov G. A., Frolova M. G. — Influence of stress raiser on the rail steel strength properties

Research results of the various-depth hair line effect on the strength properties of the rail steel М76 at static, cyclic and impact load are provided. A suggested model of surface defect as an electroerosion notch is adequately similar to hair lines and allows considerably reduce laboriousness of the testing and pre-test costs. Irrespective of the test category hairline cracks are less hard stress concentrators then the studied artificial flaws.
Key words: stress raiser, electroerosion notch, railing, plastic deformation

TECHNOLOGIES AND EQUIPMENT FOR MACHINING, PHYSICOTECHNICAL PROCESSING, NON-CUTTING SHAPING

Gorbunov A. S., Makarov V. F. — Influence of the helical bevel gears processing sequence on the residual stress distribution and on the amount of the teeth surface layers strain hardening

Research results of the influence of the helical bevel gears processing sequence on the amount and distribution of the residual stress and cold hardening of the teeth surface layers are provided. Graphs of residual stress distribution along the gash depth of the helical bevel gears are obtained as well as graphs of surface microhardness distribution depending on the depth. Techniques of increasing helical bevel gears’ fatigue resistance are offered.
Key words: gas turbine engine, helical bevel gear, teeth, reliability, resource, gear processing, surface layer quality, tooth space, microhardness, residual stress

TOOLING PRODUCTION

Pikalov Yu. A., Pikalov Ya. Yu., Broungardt M. V. — Static behaviour optimization of the adaptive hydrostatic spindle bearing

Static behaviour research and optimization results of new adaptive hydrostatic spindle bearings featuring simple production-friendly construction and high performance criteria are covered. Mathematical model, computation algorithm and bearing load and energy characteristic optimization method are described. In the novel method of multivariate optimization a priority system allowing finding parameter optimal combination for concrete working conditions of the bearing is used.
Key words: static behaviour, spindle bearing, mathematical model, optimization

SPECIAL TECHNOLOGIES

Astakhov Yu. P., Bukhanova I. F., Zhuravel V. M., Kotov A. N., Myslivets Ye. A. — Prospect of diamond-cluster coating use in component production for rocket space technology

Possibility of nanotechnology application when manufacturing components for the purposes of the engineering industry/ including components for rocket space technology is analysed. Diamond-cluster coating procedure of the gear active face by galvanic method is offered. Results of the metallographic examinations and tests of the parts included into the product are provided.
Key words: nanotechnology, nanomaterials, strengthening, rocket space technology, diamond-cluster coating, wear resistance

Shiguin A. O. — Principles of constructing functional diagrams of electromagnetic engines of linear action

Analysis results of the operating principle of a number of linear electromagnetic motors featuring generalities of the similar engine groups are covered. Requirements set for the linear electromagnetic motors to be used as power machines of different purposes are worked out.
Key words: electromagnetic linear motor, basic diagram, power efficiency, unrestricted stroke, cross magnetic field

TESTING AND DIAGNOSTICS METHODS IN ENGINEERING INDUSTRY

Varlamov D. P., Steklov O. I. — Multiple intratubal defectoscopy of the gas main system of two climatic regions of Russia

Stress corrosion cracking imperfections and anomalies of the ring welded joints on the lengthy multistrand system of gas-main pipelines in two climatically different regions of Russia, i.e. in Western Siberia and Central region are considered. It is shown that a great number of welds anomalies is risky for the safe operation of the gas main system not only as a probability of weld fracture but also as forming complementary factor for stress corrosion cracking imperfections initiation and progress in the intersection zone of longitudinal and ring welded joints.
Key words: intratubal defectoscopy, corrosion cracking, anomalous ring welded joint

PROCESSES AND PRODUCTION AUTOMATION AND CONTROL, CAD SYSTEMS

Kouptsov V. R., Feofanov A. N. — Nonrotational parts process optimization in САМ-system GeMMa-3D using five-coordinate machining centre

A basic master part optimal production process using five-coordinate machining centre is considered.
Key words: nonrotational part, САМ-system, processing, five-coordinate machining centre

MATHEMATICAL MODELLING, CALCULUS OF APPROXIMATIONS AND SOFTWARE SYSTEMS

Andreyev A. G., Dubovetsky B. O., Zverev I. A. — Complex calculation analysis of the characteristics of spindle assemblies on rolling-contact bearing when designing them

A general approach to modelling spindle assemblies on rolling-contact bearing is provided and complex calculation analysis necessity of their designing data is validated. Fundamentals accepted at developing a spindle assembly complex model which combines particular models, such as elastic deformation, dynamic, heat models and bearing life model are described. An application suite is developed in the standard system MATLAB. Operability comparative analysis results of the spindle assemblies’ standard constructions are covered.
Key words: metal-cutting machine tool, spindle assembly, rolling-contact bearing, complex mathematical model

STANDARDIZATION AND PRODUCT QUALITY CONTROL

Panin V. N. — Certification of welding engineering

A facultative certification scheme for the objects welding engineering is worked out. It is an intersectorial scheme strictly welding-oriented; its range of application has no limits by analogy with foreign certification schemes.
Key words: welding engineering, certification, quality, reliability, standards

LABOUR PROTECTION IN ENGINEERING INDUSTRY

Kirillov A. K. — System of environmentally safe dry machining at metal working

The technology of dry cutting constructional materials with indemnification of the cutting fluid physical functions, including nanostructural coated carbide tool, system of ionization of the gas media submitted to a zone of cutting, and also the device for generation of the tangential ultrasonic vibration putting to the cutting tool is considered.
Key words: lubrication cooling technology environment, ionized gas medium, multifunctional nanostructured coating

PRODUCTION ORGANIZATION

Yurin V. N., Malikov S. B. — Concurrent work execution risks management at aero-engine parts’ design and experimental process engineering

Issues of concurrent work execution risks management at aero-engine parts design and preproduction engineering (DPPE) are considered. Design and preproduction engineering documentation correlation is analyzed. Cause-and-effect relations of the each type of the raw data are determined. Laboriousness of changing engineering solution and reforming DPPE-documents is assessed. Rating of factors reducing probability of changing raw data of the DPPE-work done earlier is received.
Key words: risk, management, engineering preparation, production, concurrent work execution

Galkin V. I., Karamavrov D. A. — Effectiveness scoring system of engineering documents circulation functioning on the basis of hierarchical simulation model

Effectiveness scoring system of engineering documents circulation functioning is suggested illustrated by an example of tool production. The system is implemented on the base of hierarchical object-oriented simulation model using TD ABC-method; and it uses integral cost factor as a finite efficiency index.
Key words: business process, measuring system, simulation model, functioning effectiveness, TD ABC-method

Motorin A. A. — Risks of outsourcing

Outsourcing is examined like a special model of business structure and one of the ways of cost reduction. Different sorts of risks are scrutinized and the ways of reduction by the use of outsourcing are presented. Potential ways of optimization of business processes were proposed by means of embedding outsourcing.
Key words: risk, outsourcing, business, strategy, structure, management

FOREIGN EXPERIENCE

Potapova G. S. — Review of the foreign journals

INFORMATION

Ivanov A. N. — International exhibition Metallurgy Litmash‘2011

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E. N. Kablov is 60 years old

Exhibitions in April—June, 2012

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