FAQ PlasmaKiev home page

... Microplasma Welding

The results of studying the arc contraction in various media showed that by varying a medium composition it was possible to efficiently govern the power characteristics of the arc. It enabled to improve the known methods and to develop new ones for microplasma welding.
The microplasma welding of the most of metals is performed by the direct polarity arc burning between tungsten electrode of the plasmatron and a workpiece in a stream of plasma forming inert gas (argon)
The microplasma is used for high quality welding of thin-walled workpieces and precision structures of various non-ferrous and ferrous metals and their alloys (steel, nickel, titanium, Fernico, copper, brass, etc.); for precision hard-surfacing to eliminate microcracks and microdefects in finished products; for soldering, cutting and for other processes of heat treatment of thin materials, requiring a concentrated heat source.
The microplasma at direct polarity, however, cannot be used for welding aluminium and aluminium based alloys, having refractory oxide films on their surface. On the basis of the studied cathode processes and features of reversed polarity arc burning, the a.c. welding process of sheet aluminium and its alloys has been developed.
The developed methods of microplasma welding of aluminium and its alloys were performed at E.O.Paton Electric Welding Institute in 1968, the first being used in domestic and foreign practice. They were widely introduced into national economy of our country and patented in France, Italy, Germany, United Kingdom, Switzerland and Japan.

Prof. V.S. Gvozdetsky
The Microplasma welding
Kiev: Naukova dumka, 1979

Top.gif (1457 bytes)
Sattinger's Law: It works better if you plug it in.
Home Start Up About Us Researchers R&D Results Events Links FAQ Contact Us
Rated by PING
return to prev.page
Comments and Add to..