Application of welding technology TIG to cast iron repair

Repair of cast iron elements realize in order to cut out a superficial casting defects. Defects decrease a usability of castings for constructional application and increase a manufacturing costs. The paper presents research results of use of TIG - Tungsten Inert Gas also known as GTA - Gas Tungsten Are surfacing by welding on cold and half-hot to repair chromium cast iron EN-GJN-XCrl5 with chromium content about 15% and nodular (with ferritic-pearlitic matrix) cast iron EN-GJS-500-7. The result of investigations show possibility of castings repair by put on defects a good quality padding welds, which have comparable or better properties than base material.