Die steel convenient for heat treatment and preparation method thereof

The invention discloses die steel convenient for heat treatment. The die steel comprises the following components in percentage by weight: 0.3 to 0.8 percent of C, 2.0 to 3.2 percent of Cr, 0.5 to 1.2 percent of V, 0.4 to 1.5 percent of Mo, 0.3 to 1.6 percent of Nb, 0.3 to 0.8 percent of HfC and the...

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Bibliographische Detailangaben
Hauptverfasser:	GU YIRONG, SUN JIANDA, DAI YUANGUO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL SPRAYING OR ATOMISING IN GENERAL TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention discloses die steel convenient for heat treatment. The die steel comprises the following components in percentage by weight: 0.3 to 0.8 percent of C, 2.0 to 3.2 percent of Cr, 0.5 to 1.2 percent of V, 0.4 to 1.5 percent of Mo, 0.3 to 1.6 percent of Nb, 0.3 to 0.8 percent of HfC and the balance of Fe. The invention further discloses a preparation method of the die steel. Compared with the prior art, the cast steel has the following advantages that the hafnium carbide is added in the composition, so that the dendritic structure of the cast steel is refined to different degrees, and the content of the Cr element in the raw material composition is high, so that the diffusion degree of the Cr element in the raw material composition is increased in the preparation process, the content of CrxOy in an oxide layer is increased, and the hardness of the cast steel is improved. Therefore, the oxidation resistance is improved, the initiation and expansion of fatigue cracks are slowed down, and the wear resis