铜硬钎焊炉均风孔板优化设计  

Optimum design of the uniform flow orifice plate of the Cupro Braze furnace

作　　者：宋树权[1,2] 王正刚[1] 周海[1] 

机构地区：[1]盐城工学院机械工程学院,盐城224051 [2]南京航空航天大学机电学院,南京210016

出　　处：《现代制造工程》2017年第2期93-95,24,共4页Modern Manufacturing Engineering

基　　金：江苏省科技厅产学研联合创新资金-前瞻性联合研究项目(BY2014108-24)

摘　　要：为保证铜硬钎焊过程中的工艺温度,改进了连续式铜硬钎焊炉的结构设计,通过增设热风搅拌装置及均风孔板来提高温度均匀性。利用计算流体力学仿真技术分析了钎焊室孔板性能,研究了孔板开孔率及开孔方式对温度分布的影响规律。研究结果表明:采用50%开孔率的均风孔板时,工件部位温度均匀性要好于其他开孔率的孔板;同一开孔率时不同开孔方式也会影响工作位置的温差,50%开孔率时两端大中间小的开孔方式可有效控制温差。研究过程中采用多孔介质对孔板结构进行简化,有效降低了建模难度,减少了分析时间,为类似结构分析及优化设计提供了依据。In order to ensure the process temperature of copper brazing, the structure of continuous CuproBraze furnace was im- proved ; the hot air stirring device and uniform flow orifice plate was used to improve the temperature uniformity. The performance of orifice plate was studied, and the influence of opening rate and opening mode on temperature distribution in the chamber was investigated by using computational fluid dynamics simulation technology. The results show that the temperature uniformity is bet- ter than others when the orifice plate with 50% opening rate is used. At the same opening rate,the opening mode also affects the temperature difference between the work positions. When the uniform flow orifice plate with 50% opening ratio, under the mode of opening rate at both ends is larger than that of middle can effectively control the temperature difference. The porous medium is used to simplify the structure of the orifice plate ,which can reduce the difficulty of modeling and reduce the time of analysis. It provides the basis for the analysis and optimization design of the similar structure.

关 键 词：铜硬钎焊 均风孔板 多孔介质 温度分布 

分 类 号：TG439.1[金属学及工艺—焊接]