摘要
风管作为调节密封腔体内的温度、湿度和压力的结构,需要具有良好的保温、气密等性能。风管原为热压罐分段成型,气密性不足,成本高。针对风管现有的缺点进行改进,将分段成型结构改进设计为整体成型结构,将热压罐成型工艺改进为真空灌注工艺,并对改进前后的风管进行了气密试验。结果表明:整体结构的风管具有更加优良的气密性,可以满足使用要求。对采用热压罐成型和真空灌注成型工艺的材料进行了力学性能测试,结果显示两种工艺成型的材料力学性能相近,说明采用更为简便的真空灌注工艺成型的材料同样满足力学性能要求,同时该工艺可以将生产周期缩短50%。
Air duct is a structure for adjusting the temperature,humidity and pressure inner the sealed chamber,which requires the air duct has good thermal insulating property and pressure tightness. The air duct had subsection structure,which made it difficult to ensure the dimension and pressure tightness. The air duct was made by autoclave molding,which required high cost and long period. To solve the problems,the subsection structure of the air duct was improved to a whole structure,so the air duct had better pressure tightness. Vacuum assisted resin infusion（ VARI） was chosen instead of autoclave molding to manufacture the air duct. The results of mechanical properties of composite made by the two processing methods showed little different,which indicated that the mechanical properties can meet the requirements with VARI processing,and the production cost and cycle can be reduced.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2016年第4期77-80,共4页
Aerospace Materials & Technology
关键词
真空灌注成型
整体结构
风管
成型工艺
Vacuum assisted infusion
Whole structure
Air duct
Processing
