【摘要】 铸造生产中的旧砂再生技术是采用物理或化学方法使铸造用旧砂的工艺性能得到重新恢复的一项生产技术,同时它又是一项具有重要经济意义和社会意义的应用技术。本文从不同角度分析了这项技术的应用能够产生的经济和社会意义,旨在使该技术得到普遍的认识和广泛的应用。更多还原

【Abstract】 The reclamation of the used sand in foundry is a kind of technology by which the technological properties are recovered with physical or chemical methods and which is of great importance economically and socially. Its economical and social significance has been analyzed from different aspects, in order to popularize the technology.更多还原