Contents of the
Paton
Welding
Journal
no.5, 2001
|
Page
|
|
|
SCIENTIFIC AND TECHNICAL |
GOLOVKO V.V.
MODELLING OF COMPOSITION OF NON-METALLIC INCLUSIONS
IN WELD METAL OF HIGH-STRENGTH LOW-ALLOYED STEELS
|
2 |
|
Experiments on validation of adequacy of the developed computer
software for prediction of the amount and composition of
non-metallic inclusions (NMI) in the low-alloyed steel weld metal
are described. In addition to modelling of the final amount and
composition of NMI, this software allows also the calculation of
characteristics of the inclusions which are contained in the weld
pool metal in a pre-solidification period of its existence.
|
GOLODNOV A.I.
ALLOWING FOR RESIDUAL STRESSES IN THE
CROSS-SECTIONS OF COMPRESSED I-SHAPED COLUMNS DURING THEIR DESIGN
|
7 |
|
A procedure has been developed for evaluation of the
stress-strain state of I-shaped steel columns at all the stages
of loading, including the hypercritical region. Design has been
performed allowing for the fields of residual stresses, arising
in the cross-sections of these columns.
|
KRIVCHIKOV S.Yu. and ZHUDRA A.P.
EFFECT OF CARBON-CONTAINING
MATERIALS OF FLUX-CORED WIRE ON TRANSFER OF CARBON INTO THE
MOLTEN POOL DURING SURFACING
|
10 |
|
Results of investigations of transfer of carbon into the molten
pool during surfacing using self-shielded flux-cored wire are
given. The effect of the type of a C-containing material of the
core of a flux-cored wire on peculiarities of its melting, values
of the coefficient of transfer of carbon into the deposited metal
and its concentration in the latter has been established.
|
BORISOV Yu.S., BORISOVA A.L., PANKO M.T., ADEEVA L.I., KOLOMYTSEV
M.V., SHAKHRAJ A.A. and SLADKOVA V.N.
PECULIARITIES OF STRUCTURE
OF QUASICRYSTALLINE Al-Cu-Fe SYSTEM COATINGS PRODUCED BY THERMAL
SPRAYING METHODS
|
12 |
|
The effect of methods and conditions of thermal spraying on
structure and phase composition of coatings of the Al-Cu-Fe
system alloy powders has been investigated. It is shown that the
maximum y-phase content of the coatings can be
produced by the method of air-gas plasma spraying. In this case
the thermal spray coatings inherit the multi-phase nature of
initial powders. Preheating of the substrate prior to spraying
allows the y-phase content of the coatings to be
increased.
|
|
INDUSTRIAL |
SEMENOV S.E., RYBAKOV A.A., KIRIAN V.I., FILIPCHUK T.N.,
GONCHARENKO L.V., VASILYUKV.M., KLIMONCHUK R.V., STETSKIV M.V.
and VLASYUK F.S.
EXPERIMENTAL EVALUATION OF THE STATE OF METAL OF
LONG-SERVICED WELDED OIL PIPELINES
|
17 |
|
Results of comprehensive investigations of samples of pipes cut
out from oil pipelines, including hydraulic tests of a pipe
section to fracture, are given. Factors of long-time force
loading were found to have a low effect on mechanical properties
and safety factor for ductility of materials, as well as on
preservation of a high structural strength of pipelines after a
long-time operation.
|
KALENSKY V.K., DVORETSKY V.I., BUGA V.M. and SEMENIKHIN A.V.
DEVELOPMENT OF MATERIALS AND TECHNOLOGY OF MANUFACTURE OF
SINGLE-ROLLER SUPPORTING MEMBERS OF BRIDGES USING SURFACING
|
22 |
|
The flux-cored wires have been developed for submerged arc
surfacing of working surfaces of rollers and plates of single-
roller supporting members (SRSM) of bridges with a layer of
high-strength steel of the 30Kh13MN grade, which is resistant to
the atmospheric corrosion. The technology of manufacture of SRSM
using surfacing allows their life to be extended 3 times to make
it equal to the life of the bridge. Plants of the E.O. Paton
Electric Welding Institute are manufacturing SRSM on the
commercial scale.
|
LEBEDEV V.A., PICHAK V.G. and SMOLYARKO V.B.
PULSED WIRE FEED
MECHANISMS WITH PULSE PARAMETER CONTROL
|
27 |
|
The paper analyses the features of design of pulsed wire feed
mechanisms based on quasi-wave converters. It is shown that the
maximal acceleration voltage achieved in the pulse can be
essentially increased by cascade connection of several modulators
or by changing the modulating pulse frequency. Conditions are
determined under which the mechanism designs will be optimal in
terms of both their manufacture and adjustment of the output
parameters. The main principles of designing new types of pulsed
feed mechanisms are defined that allow for the features of their
mounting in the mechanised arc welding equipment.
|
NESTERENKO N.P. and SENCHENKOV I.K.
CLASSIFICATION OF WAVEGUIDES
SHAPED AS BODIES OF REVOLUTION FOR ULTRASONIC WELDING OF POLYMERS
AND COMPOSITES ON THEIR BASE
|
34 |
|
The paper presents a classification and systemic method of
selection of the configuration of waveguides shaped as the bodies
of revolution, that are used as tools for ultrasonic welding of
polymers and composites on their base. Known and new basic
configurations of sonotrodes which can be used for producing
large-diameter circumferential weld, are considered.
|
IVANOVA O.N.
10 YEARS OF THE INTERNATIONAL ASSOCIATION "WELDING".
|
38 |
|
BRIEF INFORMATION |
PISMENNY A.S.
SYNTHESIS OF INDUCTION SYSTEMS FOR WELDING AND
BRAZING OF PIPE JOINTS BY USING PRESET DISTRIBUTION OF POWER IN
THE WELD ZONE
|
41 |
|
Method of synthesis of electromagnetic field and design of
inductor, realized in use of impedance boundary conditions and
preset distribution of specific power at the workpiece surface
being heated are described.
|
VASILISHIN S.A.
STRAIGHTENING OF ELECTRODE WIRE USING AUTOMATIC
DEVICES
|
44 |
|
Types and peculiarities of technological processes of
straightening of metallic materials from bundles are described.
Designs of straightening cases and differences in their
operations are considered. The modified design of the
straightening case is suggested, which makes it possible to set
different schemes of its adjustment depending upon the diameter
and type of a material being straightened.
|
PWI TECHNOLOGIES.
|
47 |
