Development of Methods and Research on High Voltage Capacitor Welding

Vinogradov

2020

MSF

Self Cite

The features of the production of welded joints from non-ferrous alloys are considered. The disadvantages of the used capacitor welding methods are described. To reduce the possibility of intermetallic compounds, it is proposed to use high-voltage capacitor welding with induction-dynamic drive (HVCW with IDD) on super-rigid modes of action. The technological scheme methods of HVCW with IDD are given, the physical nature of the impulse process is described. The results of comparative analysis of the waste of thermal energy depending on the technological method and roughness of the welded surfaces, as well as the ratio of thermal and mechanical energies for each method of HVCW with IDD are given.

Section: The Essence Of the Process Of High-voltage Capacitor Welding...mentioning

confidence: 99%

Analysis of the Formation of Welded Joints from Non-Ferrous Alloy

Vinogradov

2020

MSF

Self Cite

“…1. The process is synchronized through the series electrical coupling of an induction-dynamic drive with weld components [11].…”

Section: Research Proceduresmentioning

confidence: 99%

“…where C -is the capacitance of the capacitive energy storage, F; U -the voltage on the capacitor, V; L -inductive reactance of the discharge circuit, determined by the number of turns of the inductor, H; I d -discharge current, A; R -is the resistance of the bit setting circuit, Om; t с -solid-phase connection time HCW; t b.a. -the burning time of the arc Earlier studies [11] revealed the factors of the HCW process that influence the strength parameters of experimental samples. These include energy parameters of the process: the capacity C and the charge voltage of the capacitor U c , the inductance of the discharge circuit installation HCW L (inductance equipment with induction-dynamic drive) and the geometrical parameters of the assembly (Δi.g.…”

Section: Research Proceduresmentioning

confidence: 99%

Analysis of thermodynamic processes under high-voltage condenser welding with inductive dynamic drive

2020

E3S Web Conf.

When obtaining fixed joints of different thickness from dissimilar materials, there arise difficulties associated with various thermophysical properties, and the likelihood of occurrence of intermetallic phases under chemical interaction. The use of super hard modes of thermodynamic effect during high-voltage condenser welding (HCW) provides localizing heat generation in the contact zone of the weld surfaces, activating the surface layers through converging the surfaces with the displacement of molten metal to the periphery of the contact zone and forming bonding in the solid phase.Recommendations are given for the use of technological methods of high-voltage capacitor welding depending on the combinations of welded alloys. A description of the nature and physical processes occurring at each technological reception is given.It is shown that the energy stored in the capacitor banks is spent on heat and power action. Variation of the mass of the induction - dynamic drive pusher and its inductance enables to adjust the ratio of thermal and mechanical components of the HCW process.The energy dispersion analysis of the experimental compounds obtained from dissimilar alloys confirms the absence of diffusion in high-voltage capacitor welding under super-rigid exposure modes.

“…Cleaning of surfaces is carried out through the vacuum-thermal preheating. In this case, the magnetic pressure in the weld junction should be uniform [9,10].…”

Section: Magnetic-pulse Moulding Welding (Mpmw)mentioning

confidence: 99%

Combined processes of environmentally friendly technology for magnetic-pulse welding

2019

E3S Web Conf.

Various techniques for producing fixed joints in solid using electromagnetic fields are considered; basic diagrams, physics, features, and technical capabilities of each method are described. It is shown that thin-walled tubular irregular structures can be obtained under the magnetic-pulse moulding welding that joins the combined actions of induced currents passing through the overlap zone and magnetic pressure for apposing the weldable edges and for shaping in accordance with the matrix configuration. Obtaining joints from dissimilar materials and structures of different thicknesses is implemented due to shock pulse capacitor welding with magnetic pulse drive. The series connection of the weldable parts enables to synchronize the current flow and force impact on the weld junction. Depending on the combination of the weldable products, three techniques of shock pulse capacitor welding with magnetic pulse drive are proposed. To intensify the quality improvement of the female connectors obtained, it is proposed to use the magnetic-pulse welding in vacuum instead of the diffusion welding. Preheating of the complete unit in vacuum allows for the pre-activation of the connectable surfaces. A unique feature of the implemented diagram is a remote action on the telescopic joints of dissimilar alloys heated in vacuum to the pre-melting temperatures through a quartz glass.