1) preform
[英][pri:'fɔ:m] [美][pri'fɔrm]
预成型坯
1.
And in order to obtain SiC/Al composites reinforced with high volume fraction, double size distribution SiC powers with different size ratios were used to prepare the SiC preforms by self-oxidation bonding at low temperature, and Ferric Nitrate crystal was used for the first time in prepare the SiC preforms as pore-forming agents.
SiC粉体间的本征孔隙和Fe(NO_3)_3去除后留下的孔隙一起构成一个三维相互连通的、开放的孔隙网络;Fe(NO_3)_3去除在SiC预成型坯中留下的孔隙分布均匀,没有偏聚现象。
2) blow mo(u)lding preformed parison
吹塑预成型型坯
3) preform
[英][pri:'fɔ:m] [美][pri'fɔrm]
预成形坯
1.
The design of preform and forging die is analyzed with the precautions and problems often observed during hog-forging.
本文以冲击块为例介绍了粉末冶金热锻的工艺,对热锻中的预成形坯设计、锻模设计作了进一步探讨,分析了热锻中的注意事项和经常出现的问题。
2.
SiCp and binder were mixed together and SiCp preforms were prepared by warm pressing, thermaldebinding and pre-sintering.
在本实验中将SiC颗粒与粘结剂混合,温压制备成坯块,进行了热脱脂与预烧结,研究了热脱脂一预烧结后坯块的线性膨胀率、孔隙度、强度与工艺条件的关系,对预成形坯的显微组织形貌进行分析。
4) preform mo(u)lding
预浸料坯成型(增强塑料)
5) Parison Formation
型坯成型
1.
In the numerical simulation of parison formation, there are two main methods: one is to treat the polymer melt as a Newtonian fluid, the other is as a viscoelastic fluid.
型坯成型是塑料挤出吹塑中的一个重要阶段。
2.
Parison formation is a critical stage in extr usion blow molding.
型坯成型是挤出吹塑中的一个重要阶段。
6) parison forming
型坯成型
1.
For the parison forming,a explanation aboutspecialized method and theory basis of numerical simulation adopted by researchersin China and abroad is given.
介绍了模拟技术在吹塑型坯成型中的研究和发展状况,对国内外学者针对型坯成型过程运用的数值分析方法和理论依据进行了论述,并着重介绍了神经网络方法。
2.
For the parison forming, the explanation had been given about method and theory basis of numerical simulation adopted by researchers at civil and abroad, and the method of neural net was review empnatically.
介绍了模拟技术在吹塑型坯成型中的研究和发展状况 ,针对型坯成型过程 ,对国内外学者进行数值分析的方法和理论依据进行了论述 ,着重论述了神经网络方法。
补充资料：冷坯热吹塑成型
分子式：
CAS号：
性质：又称冷坯吹塑法。用普通挤出机制成不同颜色、直径和壁厚的各种热塑性塑料管，成型加工厂将其切成所需的长度，经再次加热进行吹塑成型。此法的优点是吹塑成型厂不需设置挤出机，可以随意改变颜色和材料，即使间歇生产也不会造成较大浪费。
CAS号：
性质：又称冷坯吹塑法。用普通挤出机制成不同颜色、直径和壁厚的各种热塑性塑料管，成型加工厂将其切成所需的长度，经再次加热进行吹塑成型。此法的优点是吹塑成型厂不需设置挤出机，可以随意改变颜色和材料，即使间歇生产也不会造成较大浪费。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条