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粉末冶金高速钢国外约在70年代初期开始投入生产应用。首先由瑞典的 Uddholm 和美国的 Crucible 开始,以后日本的神户制钢、日立金属等公司先后投入生产。粉末冶金高速钢的主要特点是碳化物组织细小、分布均匀。它与常规的冶炼高速钢相比较,如果成分相同,韧性与疲劳性能有较大的改善,提高合金化程度,可提高耐热性、耐磨性和硬度而对韧性的损害较少。因之,粉末冶金高速钢切削刀具的切削性能有很大的提高。
High speed steel powder metallurgy abroad about the early 70s began to put into production and application. First, Uddholm in Sweden and Crucible in the United States started. Later, Kobe Steel and Hitachi Metals in Japan successively put into production. The main characteristics of powder metallurgy high-speed steel carbide is small, evenly distributed. Compared with the conventional smelting high-speed steel, if the composition is the same, the toughness and fatigue properties are greatly improved. Increasing the degree of alloying can improve the heat resistance, abrasion resistance and hardness with less damage to the toughness. Therefore, the cutting performance of powder metallurgy HSS cutting tools has greatly improved.