Manufacturing high strength moldings, comprises smelting molten steel, and casting in mold, where unprocessed cast parts with predominant martensitic microstructure are subjected to a final assembly by cold forming in specific temperature

摘要

Manufacturing high strength moldings made of cast steel, preferably transformation induced plasticity-steel with austenitic-martensitic structure having 0.25-0.75% carbon, comprises smelting molten steel by conventional melting method, and casting in a mold, where unprocessed cast parts with predominant martensitic microstructure are subsequently subjected to a final assembly by cold forming at a temperature below 150[deg] C.