20th International Forgemasters Meeting - IFM 2017

Forging temperature is an important parameter to be defined in the forging process planning, because the final mechanical properties are directly influenced by this process temperature. In this study the AISI 4130 engineering steel, used for flexible tubes connectors in oil and gas industry, was investigated concerning the forging and heat treatment processes. Ingots up to 18 ton were forged in the 50 MN hydraulic open die press using different initial temperatures. Then the forged bars were heat treated following the same process of normalizing, quenching and tempering. The products were compared in terms of grain size and microstructure for the as forged and heat treated conditions. The mechanical properties, as tensile strength, yield strength, elongation, reduction of area and impact toughness, were analyzed for the heat treated condition only. The results showed better mechanical properties to lower temperatures.