TH179077A - Hot forging tool steel - Google Patents

Abstract

1 page of the number 1 page summary of the invention Hot forging tool steel has a C content of 0.45 to 0.57% mass, Si: 0.05 to 0.30% mass, Mn: 0.45 to 1.00% mass, Cr: 4.5 to 5.2% mass, Ni: 0.5% mass or less, Mo + (1/2) w: 1.0 to 2.0 mass percent, V: 0.30 to 0.80 mass percent, and N: 0.008 to 0.025 mass percent, the remainder of Fe and impurity at It is unavoidable, and the area ratio of carbides with equivalent circular diameter of 1 (symbol) m or less will be 20% or higher. As a result, it will be possible to improve thermal conductivity. In order to shorten the cycle time and improve the hardness after heat treatment to Abrasion resistance is improved while sufficient hardenability is maintained.As a result, it is possible to obtain a hot forging tool steel with excellent ductility. Along with high hardness, excellent corrosion resistance. And the slightest reduction of Mechanical doing ability:

Claims (1)

1.008 to 0.025 percent mass, the rest will be Fe and impurity that It is unavoidable, and the area ratio of carbides with equivalent circular diameter of 1 (symbol) m or less will be 20% or higher. As a result, it will be possible to improve thermal conductivity. In order to shorten the cycle time and improve the hardness after heat treatment to Abrasion resistance is improved while sufficient hardenability is maintained.As a result, it is possible to obtain a hot forging tool steel with excellent ductility. Along with high hardness, excellent corrosion resistance. And the slightest reduction of MECHANICAL CAPABILITIES. Privilege (item one) which will appear on the advertisement page: ------ 20/10/2017 ------ (OCR) page 1 of the number 1 claim 1.008 to 0.025 percent mass, the remainder will be Fe and the inevitable impurity, and the area ratio of the tag: