The steel deck pavement construction of the Hong Kong-Zhuhai-Macao Bridge is characterized by high technical standards, large scale, and harsh environmental conditions in the open sea. These characteristics demand very high standards for construction quality control and management. Based on the application conditions of this project, research on the materials, construction equipment, construction technology, and other aspects have been carried out. The special modifier for the Gussasphalt mixture, the automatic two-component waterproof material spraying system, and the compound asphalt mixture system have been developed. From the steel bridge pavement construction process and quality evaluation results, the proposed innovative technology is very useful and necessary to improve project quality, reduce quality risk, and guarantee the achievement of construction goals.

离心铸造是在离心力场下浇注和成形的铸造方法,所生产的铸件中少、无夹杂和气孔,组织致密,工艺出品率高,是管件生产的主要方法[1].在离心铸造中影响产品质量的因素主要有:喷涂质量、浇注温度、型筒转速以及型筒转动平稳度.本文分析离心铸造中喷涂系统和铸管质量的关系.

针对离心铸造中铸管质量问题,分析了型筒的结构是产生质量问题主要因素,介绍了型筒设计的理论依据与方法。

最近,广东惠州雷士工业发展有限公司总经理吴长江有点头疼,他掌控下的雷士照明正遇到一个小小的麻烦,其巨大的品牌影响力终于引来了"李鬼"缠身,雷土产品在市场遭遇段冒.