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    • 4. 发明申请
    • TOOL STEEL
    • 工具钢
    • WO1986004360A1
    • 1986-07-31
    • PCT/SE1986000010
    • 1986-01-14
    • KLOSTER SPEEDSTEEL AKTIEBOLAGHELLMAN, PerWISELL, Henry
    • KLOSTER SPEEDSTEEL AKTIEBOLAG
    • C22C33/02
    • C22C33/0257B22F3/24
    • A tool steel, comprising high speed steel and cold working steel, produced from metal powder by compaction at a high pressure and a high temperature to full density. The steel is characterized in that a) at least 40% of the carbides of a randomly chosen section have a largest extension > 1.5 mu m, b) at least 25% of the carbide area of a randomly chosen section is contributed by carbides with an extension > 3 mu m, c) the steel contains carbides, the maximum size Lmax of these carbides and/or of carbide aggregates being a function of the diameter or smallest gauge of the product, and that d) the steel contains at least 0.7% carbon and at least 10% of one or several of the following metals: chromium, tungsten, molybdenum, and vanadium, or mixtures of these.
    • 包括高速钢和冷加工钢的工具钢,由金属粉末通过高压和高温至全密度的压实制成。 钢的特征在于a)随机选择的部分的至少40%的碳化物具有>1.5μm的最大延伸,b)随机选择的部分的碳化物面积的至少25%由碳化物与 延伸>3μm,c)钢含有碳化物,这些碳化物和/或碳化物聚集体的最大尺寸Lmax是产品的直径或最小规格的函数,d)钢含有至少0.7% 碳和至少10%的一种或几种以下金属:铬,钨,钼和钒,或它们的混合物。