Novel casting and hot work tool steel

Abstract

The invention refers to a kind of new-type casting hot-forge mould steel. The alloy components (wt%):C 0.15-0.35%, Cr 1.5-3.7%, Mo 0.5-2.5%, Ni 0.6-2.5%, V 0.1-0.8%, W 0.1-0.8%, Mn 0.2-0.6%, Si 0.2-0.5%, S<=0.04% and P<=0.04%.

Description

technical field [0001] The invention relates to a steel for hot working dies, in particular to a steel for hot forging dies that can be directly manufactured by casting. Background technique [0002] At present, the total output value of the world's mold market is about 60-65 billion US dollars, and hot-working die steel accounts for about 20% of the forging and die steel market. Hot forging die steel accounts for about 30% to 50% of the total output of hot work die steel. Therefore, the life and cost of the hot forging die determine the productivity of the equipment and the cost of the product. [0003] At present, the hot forging die manufacturing technology in most countries in the world is relatively backward, mainly as follows: the hot forging die steel billet is provided by the special steel plant—according to the maximum size of the processing die, the billet is changed into a solid module—heat treatment—rough machining—heat treatment—finishing processing. Its manu...

AI Technical Summary

Problems solved by technology

Its manufacturing cost is high, material utilization rate is low, and resource waste is large

[0004] China, the former Soviet Union, the United States, Japan and other countries have carried out a lot of research work on alloy composition design and microalloying of casting hot work die steel, and developed some casting hot work die steel, as shown in Table 1~4, but the performance Not very satisfactory, limiting the application of these hot work tool steels