二次成型

通过对吹塑法制取PVC热收缩膜不同工艺的比较，提出了用吹塑法制取PVC热收缩膜从成型工艺角度可相对地分为一次成型法和二次成型法的概念。

According to comparing different bubble film technology for the PVC shrinkable film , a new concept was put forward that the molding technology can relatively be divided into one-stage processing and two-stage processing .

结果表明，PU（HTPB）具有微观相分离，一次成型后局部出现微小结晶，该晶体呈放射状球形结构，二次成型后结晶消失。

The results indicated that PU ( HTPB ) had a micro phase separation . After primary forming , local micro crystallites with radial ball structure were observed .

石材加工用二次成型电镀薄壁钻头的研制

Development of the Two stage Electro plated Thin Kerf Bit for Dimension Stone Processing

小管全氩弧焊一次成型与二次成型工艺的试验研究

Test and Research of Technology on Once Shaping and Second Shaping of Small Tube Full Amon Arc Welding

塑料二次成型制品、料包装制品，机械零件加工。经营方式：产销，加工。

Second shaped plastic products , plastic packaging products , machinery parts processing . Mode of operation : production , processing .

首先对橡胶颗粒物理力学特点进行分析，在此基础上提出了二次成型橡胶改性沥青混凝土的方法；

On the basis of analyses of physical and mechanical characteristic for Crumb Rubber , the process that the rubber modified asphalt concrete is taken shape at twice is brought forward .

二次注射成型聚丙烯中剪切诱导连接界面的形态演变

Shear Induced Interfacial Morphology Development of Polypropylene During over-Injection Molding

外部槽线与管体经由二次模压成型，固化工艺也做了相应调整。

External trough line and the tube are through a second compression molding , and the curing process is also made the appropriate adjustments .

两江/满台城电站水轮机转轮叶片二次热弯成型工艺研究

Study on Technology of Profile Twice Shaping with Hot-bending for Runner Blade of Liangjiang / Mantaicheng Power Station

采用进口预浸布作为原材料，槽线与管体二次固化整体成型，表面光洁度和力学性能优异。

Using Imported Prepreg as the Raw Material , The Second Overall Compression Molding for External Trough Line and the Tube , Excellent Surface Finishment and Mechanical Performance .

分析了工程塑料在二次软胶注塑成型生产中易出现的注塑缺陷，诸如应力开裂、翘曲变形、二次注塑废品率偏高等问题。

Analysis of the engineering plastics injection molding soft in the 2nd Molding injection molding defect , such as stress cracking , warping deformation , the high Reject rate in 2nd Molding waste injection and so on . 4 .

水轮机转轮叶片二次热弯成型技术是一门可以获得叶型准确、铲磨量小、价格适中、生产周期较短的制造技术。

By means of applying the technology of profile twice shaping with hot bending to turbine blade , the good accuracy and shape of profile molding , less grinding , fit price and short period of manufacturing are obtained .

通过对主透镜和二次透镜的注塑成型过程进行模拟分析，对比分析结果确定了各结构合理的尺寸，及冷却系统中冷却介质的温度，最终实现主透镜和二次透镜模具的合理性设计。

Through the simulation of injection molding process for the lenses and analyzing of the simulation results , the optimized size of every structure was confirmed and coolant temperature was selected .

考察了黏结剂添加量和二次活化温度对成型活性炭强度、堆积密度、油气吸附性能等影响。

The effect of the binder content and the second activat temperature on properties of activated carbons in pellet such as the compressive streng bulk density and gasoline adsorption were investigated .

如果把粒度配合、二次压制、二次成型以及磁选结合起来，磁体的密度和磁性能能够显著得到提高。

Combining press mending with granular arrange and magnetic select , the density and the properties can be improved remarkably .