【摘要】 本文介绍了电渣熔铸异型件-拐轴和斜轧辊的质量、性能、寿命、金属利用率和成本等技术经济指标。经比较,已赶上并超过了锻造件水平。三年来的生产实践也已证明:采用把精炼、铸锭和成型三道工序合而为一的电渣熔铸直接成型法是适于以铸代锻来生产某些机械配件毛坯的重要途径。试验结果指出,电渣熔铸件内部质量高的主要原因是由于渣钢提纯精炼和强冷纵向凝固。熔铸件的外型越复杂,解决成型质量的难度就越大。文中探讨了影响表面成型的因素和规律,并指出渣池单位容积功率值Ρν是影响炉温及成型的主要因素。经统计得到Ρν与铸件半径γ的近似式为:1/Ρν=3(γ-2)。更多还原

【Abstract】 This paper describes the qualities, properties, service life, metal yield as well as cost and othertechnical characteristics of shaped electroslag casting--guide-wheel shafts and cross rolls. In com-paring the test results, ESC is equivalent or superior to forged parts. Production practice in the lastthree years has also proved that the ESC direct forming process in which refining, casting are com-bined with forming, is an important method to produce some billets of machine parts by casting in-stead of forging. Test results show that the improvement in interior qualities of ESC is mainly dueto steel-slag refining reaction and longitudinal solidification by intensive cooling. The more complexthe shape of ESC is, the more difficult to get good surface forming. In this paper, factors and rulesaffecting surface forming are studied, and it is shown that the power value of specific volume ofslag pool pv is the main factor influencing the furnace temperature and surface forming. By statis-tics the approximate relation between pv and casting radius γ is obtained, i, e., 1/pv=3(γ-2).更多还原