hot-quenching
3.Analysis on the Quenching-Cracking for Hot-Forging Die Made of 3Cr2W8V Steel
4.The test of 50--650℃ Coffin model thermal-fatigue has been made, usingnotched plate specimen of the hot-working tool steels 3Cr2W8V and 4Cr5MoSiV1after quenching and tempering, It was shown that the specimens appeared plasticcompression strain with the temperature increasing and elastic tensil strain withthe temperature decreasing.

