熔融挤压快速成型机融化特性研究  

Melting characteristics research of rapid melt extrusion molding machine

作　　者：罗攀[1] 柯坚[1] 刘桓龙[1] 于兰英[1] 吴文海[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《现代机械》2015年第1期11-14,共4页Modern Machinery

摘　　要：分析熔融挤压快速成型机(FDM)的挤出原理,研究在加工过程中ABS塑料高黏弹聚合物的熔融机理,建立相应的物理模型,并利用Fluent软件对其熔融时间和熔融段长度进行了数值模拟计算,并研究机筒内径和外径对熔融段长度的影响。研究结果表明:当机筒内径不变的前提下,机筒外径的尺寸越小,融化段长度越短;当机筒外径不变的前提下,机筒内径的尺寸越大,融化段的长度变短。Extrusion principle by Fused deposition molding machine was analyzed. Research on ABS plastic High in viscoelastic polymer in the manufacturing process of melting mechanism,and establish the appropriate physical model. With the large analysis software of fluent,the melting time and melting length has carried on the numerical simulation,And this paper studied the influence of inner and outer diameter of the barrel for melting length. The results show that： when the inner diameter of the barrel cannot be changed,the size of outer diameter is smaller,the melting length is shorter; when the outer diameter of the barrel cannot be changed,the size of inner diameter is larger,the melting length is shorter.

关 键 词：FDM ABS塑料 熔化段 机筒尺寸 FLUENT 

分 类 号：TG375.6[金属学及工艺—金属压力加工]