中碳低合金稀土耐磨钢锤头的研制
Development of Hammer Head of Medium-carbon Low-alloy Wear-resistant Cast Steel
熊其兴
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作者单位：（武汉职业技术学院 机电工程学院，湖北 武汉 430074）
中文关键字：锤头；低合金；立浇串铸；水玻璃砂
英文关键字：hummer head； low-alloy； vertical pouring and string casting； sodium silicate sand
中文摘要：介绍了中碳低合金稀土耐磨钢锤头的化学成分、熔炼、变质处理和热处理工艺。试样测试表明，锤头硬度可达52 HRC以上，冲击韧度达20 J/cm2以上。采用CO2硬化水玻璃砂无箱立浇串铸工艺，设计工装，可以获得优质健全的锤头产品。
英文摘要：The chemical composition, melting， modification and heat-treatment of medium-carbon low-alloy wear-resistant cast steel are introduced. Testing samples shows that its hardnes is more than 52 HRC, its impact toughness is more than 20 J/cm2．The perfect hammer head can be obtained by designing technological equipment,using vertical pouring and string casting process in CO2 - sodium silicate sand.