【摘要】 本文在探讨影响受力压铸件性能因素时,观察了重量为0.24～4.8公斤的铝合金压铸件的断口和金相组织,发现了破碎激冷层的存在。研究了破碎激冷层的生成机理及其对压铸件性能的影响。对提高压铸件质量,防止由破碎激冷层造成的废品,有实际指导意义。更多还原

【Abstract】 In the present paper fracture appearance and metallogra-phical structure of aluminum alloy die castings weighing from 0.24 to 4.8Kg were examined during in probing into factors affecting the properties of load-subjected die castings.The existance of broken chilling layer was found in those castings. The" forming mechanisms of broken chilling laver and its influence on the propertiesof die castings were studied. The work has a practical significance to the improvemend of quality of die casting and to the prevention of rejects caused by tke broken chilling layer.更多还原