改進(jìn)型M2高速鋼頂頭的研究和應(yīng)用
Research and Application of Innovated M2 High Speed Steel Plug
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摘要: 采用RE-Al-N對(duì)M2鑄造高速鋼進(jìn)行變質(zhì)處理,消除了鋼中網(wǎng)狀共晶碳化物,細(xì)化了基體組織,減輕了W、Mo元素的偏析,并在不降低M2高速鋼硬度的條件下,使韌性大幅度提高。變質(zhì)處理后的M2鑄造高速鋼具有優(yōu)異的抗熱疲勞性能和抗高溫磨損性能,用于制造熱軋無(wú)縫鋼管均整機(jī)頂頭,具有良好的使用效果。Abstract: The cellular eutectic carbide is eliminated, the matrix fined and the segregation of elements W and Mo reduced in M2 cast high speed steel after it is metamorphism-treated with modificator RE-Al-N. Also its toughness is greatly increased without increasing its hardness. Thanks to the said treatment the M2 cast high speed steel possesses excellent heat fatigue resistance and high temperature wear resistance, which leads to satis-factory effectiveness of the plug made thereof for seamless steel tube reeling mill.
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