Journal "Svarochnoe Proizvodstvo"ISSN 0491-6441
Contents (7 2016)
to russian


SCIENTIFIC-TECHNICAL SECTION

Kolokolnikov S. ., Steklov . I. Evaluation of the welded joints stress state heterogeneity before and after heat treatment based on the method of the metal magnetic memory

The research results of the welded samples stress state before and after thermal treatment (TT) on the basis of the metal magnetic memory method (MMM) are adduced. The correlation betweenthe change in the stress state of the welded joint and strength of the own dispersion magnetic field, formed during the welding process in a weak geomagnetic field conditions is shown. Efficient zones detection of the welded joints stress state heterogeneity received by the MMM method and the evaluation of their changes after thermal treatment is proposed.
Key words: zone of stress concentration, stress-strain state, the method of metal magnetic memory,heat treatment

Trushnikov D. N., Belenkiy V. Ya. The formation model of non-self-maintained discharge in the plasma at electron-beam welding

A model of the formation of non-self-maintained discharge in the plasma at electron-beamwelding is proposed. The concentration of electrons and the average energy of the electrons in theplasma over the area of the electron beam exposure are calculated by solving the pair of convection-diffusion equations for the electron density and average energy. For the numerical model usedin the construction of an application the applied software package Comsol 4.3, Plasma Modulemodule, DC Discharge expansion was utilized for the numerical calculations when model designing. The developed model allows the calculation of plasma parameters both over the welding area,as well as directly in the emerging burn-through channel.
Key words: electron beam, plasma, electron beam welding, non-self- maintained discharge, modeling

Alyakrinskiy . N., Logachev P. V., Semenov Yu. I. Investigation of electronbeam welding in an external magnetic field

A study of the electron beam welding process of stainless steel in a strong magnetic field iscarried out. The fluctuations suppressing possibility of the welded joint root penetration depth atelectron beam welding of non-magnetic metals and alloys is shown. Suppression of fluctuationshappens at joint penetration restriction through the turn of the electron beam. A permanent dipolemagnet with rapidly collapse magnetic field was used for the trajectory curvature of the electronbeam and its turn.
Key words: electron-beam welding, corrosion-resistant steel, penetration depth, magnetic field

Lyushinskiy . V. The parts joining of the heat-resistant alloy by diffusion welding (Part 1)

The effectiveness of diffusion welding application for joints parts from the nickel heat-resistantalloys is confirmed. It is proposed to apply intermediate layers from a nickel for the mechanicalproperties improving, the parts plastic deformation reducing, softening of welded nickel heat-resistantalloys eliminating.
Key words: diffusion welding, nickel heat-resistant alloy, intermediate layer of the welded joint

PRODUCTION SECTION

Parshin S. G. The influence research of the gaseous halide SF6 on the MAG-welding process of carbon steel S235JR

In the article the research results of carbon steel S235JR MAG-welding process with the sulphurhexafluoride SF6 introduction in the carbonic acid at a concentration of 1,6 to 6,4 % are adduced.
The aim of research was to improve the drip metal transfer and the formation of the weldingjoint at the MAG-welding in the environment of carbonic acid. When introducing sulphur hexafluorideSF6 in carbonic acid the electrode melting process change occures, spatter and short circuitsduration reduces. Drip transfer rate increases to 1,6 times, the penetration depth increases to66 %, and the seam width is reduced to 36 %. At the same time the welding current increases, thearc voltage, the amplitude of the current deviation and the arc voltage decrease in a wide rangeof welding parameters.
Key words: MAG-welding, carbon steel, carbonic acid, sulphur hexafluoride, drip transfer, penetration depth, seam width

Lukin V. I., Rylnikov V. S., Orekhov N. G., Afanasev-Khodykin A. N., Kolodochkina V. G., Galushka I. A. Brazing features of the single-crystal alloys VGM4 and VGM5

In this article the processes in monocrystal nickel heat resisting alloys during the brazing processhave been investigated. The methods of prevention a recrystallization process in monocrystalalloys are offered. The microstructure of brazing joints between VGM4 and VGM 5 is studied. TheInfluence of thermal processes on a microstructure of brazing joints between VGM4 and VGM5 isinvestigated. The strength of brazing joints is determined.
Key words: solder, monocrystal, nickel superalloys, brazing, brazed joints

Dragunov V. K., Goncharov A. L., Portnov . . Effect of the electron beam welding technological parameters on welded joints structure and mechanical properties of austenitic steel with a bronze at the manufacture of power engineering structures

The work deals with the research of the combined welded joints obtaining possibility fromaustenitic steel 316L(N) with bronzes brands CuCr1Zr and CuAl10Ni5Fe4 with thickness of 30 mmvia an electron beam welding. The researches of the welded joint formation from heterogenius materialswere carried out and the parameters of the electron beam welding are established. Also, researchesof the microstructure, mechanical properties and chemical composition of the obtainedwelded joints obtained were carried out. It is shown the possibility of achieving of mechanical propertiesvalues of metal welded joints at the main bronze metal level atn the process implementationin accordance with brazing-welding scheme, which will require of accuracy and stability level increasingof the electron beam parameters such as technological tool.
Key words: electron-beam welding, electron gun, heterogeneous materials, bronze, microstructure,mechanical properties, penetration degree

Panin V. N. The specifics accounting of social processes in the technical regulation

It is noted that one of the principal, if not the main tasks of the Customs Union technical regulationsis to ensure the safety of the final product. When the products manufacturing with the useof "special" (welding) process for these products safety valuation must take into account the specificityof these processes. To achieve this goal is proposed to certify welding production qualitysystem in compliance with objectives of the certain international standsrts or regional standards,harmonized with international standarts, which takes into account this specificity. These standardsshould be included in the list of standards with corresponding technical regulations. From this position,a brief analysis of the three TR CU, "Lists" standards to them, as well as the European Directive97/23 / EC "Equipment, operating under pressure" is carried out. A complete requirementsmismatch of and the Directive (dealing with the same equipment type), with point of viewthe specifics of "special" (welding) processes when evaluating the safety of the end product manufacturedthrough the use the processes mentioned above is shown. The recommendations overto remedy the situation correction are given.
Key words: technical regulation, technical regulations, special process, welding processes, quality,reliability, safety, conformity assessment, certification, European directives

ECONOMIC AND PRODUCTION ORGANIZATION

Evstigneev I. S., Lutsenko A. V., Sukhov S. V. Principles of experienced and experimental production organization in the research and production association

The article is devoted to the organization of experienced and experimental production. Typicalcharacteristics of the test and experimental production are analyzed, the basic methods ofmodeling are considered, the work structure of technology centers, the prototyping method, theprincipal characteristics of prototyping are adduced. All considered methods and structurepresent a major part of the test and experimental production in research and production associations.
Key words: organization of the test and experimental production, prototyping, prototype methods,technological centers, industrial technology employed in a test production, prototyping

EDUCATION AND TRAINING

Bichurin Kh. I., Mashkov V. N., Silaev V. V. The innovative system of specialist training and raising the level of staff skill in the engineering enterprise

In this work are presented the innovative system of training the specialists and increasing thequalification of the personnel of the machine-building enterprise.
Key words: training, specialist, qualification; machine-building enterprise

INFORMATION

Suslov An. A. 11th International Specialized Exhibition for Optical, Laser and Optoelectronic Technologies "Photonics. World Lasers and Optics 2016

International Championship "Abilimpiks2016"


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