介绍中俄东线工程干线用Φ1422 mm X80钢级感应加热弯管的研发过程,详细阐述其关键制造技术,并检测产品的力学性能等。分析认为:该感应加热弯管适用于-45~80℃工作环境,额定工作压力达到12 MPa;抗震性好、强度和韧性高、性能稳定可靠、...介绍中俄东线工程干线用Φ1422 mm X80钢级感应加热弯管的研发过程,详细阐述其关键制造技术,并检测产品的力学性能等。分析认为:该感应加热弯管适用于-45~80℃工作环境,额定工作压力达到12 MPa;抗震性好、强度和韧性高、性能稳定可靠、使用寿命长;各项性能指标均达到或优于技术条件及相关标准要求。展开更多
Ultra-high molecular weight polyethylene（UHMWPE） fiber/epoxy composites were fabricated by a vacuum assisted resin infused（VARI） processing technology. The curing condition of composites was at a cure temperature ...Ultra-high molecular weight polyethylene（UHMWPE） fiber/epoxy composites were fabricated by a vacuum assisted resin infused（VARI） processing technology. The curing condition of composites was at a cure temperature of 80 ℃ for 3h in a drying oven. The characteristics of 2.5D（shallow bend-joint and deep straight-joint） structure and 3D orthogonal structure were compared. The failure behavior, flexural strength, and microstructures of both composites were investigated. It was found that the flexural property was closely related to undulation angle θ. The flexural strength of 3D orthogonal structure composite was superior to the other two structures composites with the same weave parameters and resin.展开更多
文摘介绍中俄东线工程干线用Φ1422 mm X80钢级感应加热弯管的研发过程,详细阐述其关键制造技术,并检测产品的力学性能等。分析认为:该感应加热弯管适用于-45~80℃工作环境,额定工作压力达到12 MPa;抗震性好、强度和韧性高、性能稳定可靠、使用寿命长;各项性能指标均达到或优于技术条件及相关标准要求。
基金Funded by the National Natural Science Foundation of China(No.51001117)
文摘Ultra-high molecular weight polyethylene（UHMWPE） fiber/epoxy composites were fabricated by a vacuum assisted resin infused（VARI） processing technology. The curing condition of composites was at a cure temperature of 80 ℃ for 3h in a drying oven. The characteristics of 2.5D（shallow bend-joint and deep straight-joint） structure and 3D orthogonal structure were compared. The failure behavior, flexural strength, and microstructures of both composites were investigated. It was found that the flexural property was closely related to undulation angle θ. The flexural strength of 3D orthogonal structure composite was superior to the other two structures composites with the same weave parameters and resin.
