cold treament

After quenching at the most appropriate temperature, the tool should be cooled to the temperature of the surrounding medium before cold treatment. In order to obtain the best effect of cold treatment, the following conditions must be observed: for high speed steel, the time interval between complete cooling to room temperature after quenching and before… Read more cold treament


High speed steel that should be cold treated may be hardened in accordance with the usual practice for that steel. During the actual heat treatment, the P8 steel tool is heated in the range of 1260 ~ 1290 ℃, while the P9 steel tool is heated in the range of 1220 ~ 1240 ℃. It… Read more Sclerosis