Abstract
The most common way of renovation of the working parts of agricultural machinery is surfacing by hardfacing coated electrodes and piped hardfacing wires. Another way to prolong the working life of the machinery is the chemical heat treatment of the material surface by nitriding. By nitriding, high hardness is obtained of the surface affected by a suitable environment and by raised temperature. This paper deals with the possibilities of increasing the lifetime of the functional area of a ploughshare by the surfacing piped wire and hardfacing electrodes and reshaping the surface layer in an argon and nitrogen environment by using a welding rectifier and the Tungsten Inert GAS method, and by validation of these methods of renovation in operating conditions.
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