Pressure welding of continuously cast nodular iron

The objective of this study was to determine the feasibility of using pressure welding as a joining technique for swaged nodular iron. Test pressure welds were produced with swaged continuous cast nodular iron at temperatures between 1750⁰F and 2050⁰F with welding pressures between 15,900 psi and 51,400 psi using an induction coil to heat the weld zone. Pressure welds of greater strength than the as-received nodular iron were produced by swaging the material before welding. The optimum welding parameters were a temperature of 2050⁰F with a welding pressure of 46,700 psi. On the basis of these tests it is concluded that pressure welding of nodular iron is feasible for joining structures in which the deformed zone is not detrimental or can be removed by machining --Abstract, page ii