Principal materials used in soldering are Tin and Lead
8) Principal materials used in soldering are
Tin and Lead
Related ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key
Thermit Welding is a welding process utilizing heat generated by exothermic chemical reaction between the components of the thermit (a mixture of a metal oxide and aluminum powder). The molten metal, produced by the reaction, acts as a filler material joining the work pieces after Solidification.
In Thermit welding process, iron oxide and aluminium oxides are mixed in the ratio 3:1.
Front body of the welder
An apron is a safety accessory used to protect front body of the welder.