Contents of the
Paton
Welding
Journal
no.6, 2001
|
Page
|
|
|
SCIENTIFIC AND TECHNICAL |
EROSHENKO L.E., PRILUTSKY V.P., BELOUS V.YU. AND ZAMKOV V.N.
EFFECT OF FLUXES ON TEMPERATURE AND CURRENT DENSITY IN THE ARC
COLUMN IN TIG WELDING OF TITANIUM
|
2 |
|
The effect of barium, calcium, magnesium, sodium and aluminium
fluorides, which are the main components of welding fluxes used
for TIG welding of titanium, on temperature of the arc column and
its distribution in the anode region has been studied. It has
been found that in TIG welding over the flux layer (TIG-F) the
temperature and electrical conductivity of the arc column plasma
increase and shape of the temperature field in the anode region
of the arc is close to the cylindrical one. Deep penetration
characteristic of this welding method is caused by higher
temperature and current density in the arc near the anode.
|
KULIK V.M., SAVITSKY M.M., NOVIKOVA D.P., VASILIEV V.G. AND
GORDAN G.N.
ARGON-ARC TREATMENT OF WELDED JOINTS ON 30KHGSA
STEEL
|
6 |
|
Effect of parameters of conditions and thermal cycle of a local
argon-arc treatment without melting on changing the metal
structure and mechanical properties of the high-strength steel
welded joint was studied. It is shown that the arc heating within
the wide ranges of treatment speed up to the temperatures of
austenization of the welded joint metal, being hardened during
welding, causes the repeated hardening, while at the temperatures
below the austenization temperatures a short-time tempering is
occurred. After the local argon-arc treatment the ductility and
impact strength of the welded joint metal are increased, the mode
of fracture is improved, the sensitivity to stress raisers is
decreased.
|
NESTERENKO N.P. AND SENCHENKOV I.K.
ANALYSIS AND CLASSIFICATION
OF PLATE WAVEGUIDES FOR ULTRASONIC WELDING OF POLYMERS AND
POLYMER-BASED COMPOSITES
|
13 |
|
A classification and systematized approach to selection of plate
waveguides used as tools for ultrasonic welding of polymers and
polymer-based composites have been proposed. The known types of
long-contour tools have been considered and new types have been
suggested.
|
KHARLAMOV Yu.A. AND BORISOV Yu.S.
EFFECT OF SURFACE MICRORELIEF
ON ADHESION STRENGTH OF THERMAL SPRAY COATINGS.
|
18 |
|
Current concepts of the role of parameters of microrelief of the
substrate surface in formation of thermal spray coatings are
analysed. The analytical model developed on the basis of analysis
of experimental data is suggested for selection of optimal
parameters of microrelief of the spray coatings.
|
LEVCHENKO O.G.
IMPROVEMENT OF METHODS AND MEANS OF PROTECTION
FROM WELDING AEROSOLS
|
26 |
|
The paper presents a review of works conducted at the E.O. Paton
Electric Welding Institute concerning welders's protection from
the harmful effect of welding aerosols. The need in an integrated
approach, i.e. the combination of technological and
sanitary-technical measures with a use of effective means of
individual protection of respiratory organs of the welders, is
substantiated.
|
|
INDUSTRIAL |
KISILEVSKY F.N. AND DOLINENKO V.V.
OBJECT-ORIENTED PROGRAMMING OF
SYSTEMS OF WELDING TECHNOLOGICAL PROCESS CONTROL
|
33 |
|
The use of object-oriented programming in the development of
systems of welding technological process control is considered. A
fragment of the electron beam welding installation is selected as
an example of a complex object of control. The object-oriented
analysis is made, the diagram of relations and synchronizing is
plotted and a conceptual solution for the network control system
of the automated system of welding technological process control
is suggested.
|
NAZARENKO O.K., NESTERENKOV V.M. AND NEPOROZHNY YU.V.
DESIGN AND
ELECTRON BEAM WELDING OF VACUUM CHAMBERS
|
40 |
|
New principles of vacuum chamber design and technology of their
assembly for EBW were developed and implemented in fabrication of
five vacuum chambers of 15 to 34 m3 and two of 0.2 m3 volume.
|
MAKARENKO N.A., GRANOVSKY A.V. AND KONDRASHOV K.A.
IMPROVEMENT OF
TECHNOLOGICAL CHARACTERISTICS OF PLASMA-MIG SURFACING USING
FLUX-CORED WIRE
|
43 |
|
Peculiarities of proceeding reactions between some components of
the flux-cored wire during plasma-MIG surfacing process were
considered. It is shown that the presence of halogenide compounds
in arc column favours stabilization of the process of the
consumable electrode arc self-adjustment. The formation of boron
trifluoride in the flux-cored wire core at the stickout during
heating improves the weld bead formation.
|
|
BRIEF INFORMATION |
SHAPOVAL A.N.
MACHINE EQUIPPED WITH AN ELECTRIC-CONTACT HEATING
SYSTEM FOR DRAWING OF WELDING TUNGSTEN WIRE
|
46 |
|
Technological parameters of the new wire drawing machine are
presented in comparison with characteristics of mass-produced
domestic and foreign machines equipped with the electric-contact
heating system. Advantages of the new machine are presented.
|
ADVERTISING.
|
48 |
