预成型

Generalized Darcy's law was first derived from the study of fluid flow through a solid-fluid mixture,and the saturated permeability tensor of a preform could be predicted by studying its unit cell under periodic boundary conditions.

首先，采用均匀化理论分析了流体在多孔介质内的流动问题，推导出广义达西定律，证明以施加周期性边界条件的单胞为研究对象，可以预测预成型体的渗透率张量，并以单向纤维织物为例，对该方法进行了验证。

To satisfy the requirements of fast producing,low cost manufacture and large thickness preforming in the field of non-resin winding cylinder composite,the equation of retracing cosine curve was deduced based on the section principle.

最后基于对余弦折回曲线的分析，利用数值模拟证实余弦折回曲线在干纱缠绕圆柱壳体预成型中有利于高速加工；在缠绕厚度相对不大且需要高速缠绕加工情况下，可采用余弦曲线作为端部区段的折回曲线。

Mainly produces Alpho lead-free welding line, lead-free welding rod, lead-free tin plasma, water-solubility tin plasma, performing tin (for hi-frequency welding), flux, detergent, stainless steel flux, CRC circuit board transparent protection varnish and detergent, KM automatic computer stripper, Yirong PCB leg cutting machine, pin moulding machine, paint remover for enamelled wire, etc.

各种规格爱法锡丝、锡条、锡浆。水溶性锡浆、预成型锡。各种用途爱法助焊剂、清洁剂、不锈钢助焊剂。CRC线路板透明保护漆和清洁剂，KM全自动电脑剥线机，亿荣PCB剪脚机、管脚成型机，漆包线去漆剂等。

In the end, this article expatiates the meaning of the matching requirements of the permeability of the preform and that of the distribution medium.

最后，对高渗透层渗透率与纤维预成型体渗透率间的匹配关系做了进一步的研究。

Production equipment: Taiwan Fuyuan middle of a rubber injection machine; Canton producing 55 liters a mixer; 35 liters a mixer; 9 inch -16 inch open Lian Machine 6; 200T flat panel computer automatically sulfide Machine 20; 50T-100T Flat Panel vulcanizer 15; pre-extrusion molding machine, one Taiwan.

生产设备：台湾富源产橡胶注射机一台；广州产55升密炼机一台；35升密炼机一台；9寸-16寸开炼机6台；200T电脑自动平板硫化机20台；50T-100T平板硫化机15台；预成型挤出机一台。

Single layer ringlike fabric was formed in accordance with the cone shape with high productivity and low cost . This type of fabric can be used to wind cone shape composites conveniently .

可按照锥形件的外廓形状生产单层环形织物，生产效率高，设备费用低，生产的预成型织物可以方便地缠绕成型锥形复合材料。

The layer preforming station is located at the palletizer's infeed.

层预成型站位于码垛机的进给处。

This series machine type is used for air spring forming to form various shapes, and for preforming of different specifications of automobiles, trains air spring before vulcanization.

概述 此系列机型用于空气弹簧成型用，成型各种形状，不同规格汽车、火车空气弹簧硫化前的预成型。

It begins with a linear KSB 8L stretch blow molding machine composed of the preform feed system with its chute, a conveyor and a feed ramp, plus the actual blow-molding machine with its integrated oven, preform spacing, blow-molding stations and built-on control cabinet. The eight-cavity blow molder operates in a two-stage-process, with an integrated oven and a built-in control cabinet. It excels in terms of space-saving construction.

生产线从一台直线形 KSB 8L 拉伸吹塑机开始，它包括带斜槽的预成型坯进给系统，一个输送机和进给坡道，加上具有一体化烤炉、预成型坯间隔、吹塑站和内置式控制柜。8 个型腔吹塑机以两步法工艺操作，具有一体化的烤炉和内置式控制柜，并在空间利用方面胜过其它的吹塑机。

Primarily study on preparation for EVA hot melt adhesive with disproportionated rosin of esterification modified as tackifier ;2. Development and Applications of Rubber Tackifier TKO Series Products;3. Several tackifier s and molding methods used in fiber preform preparation technology were analyzed and summarized, and the development trend of tackified fiber preform preparation was prospected.

总结了20世纪90年代以来关于复合材料液体模塑成型技术中纤维预成型体制备技术的相关文献报道，指出LCM用纤维预成型体应满足的工艺性要求，且对当前国内外纤维预成型体的成型方法及其制备技术中应用的几种增粘剂进行了分析和概述，并对纤维预成型体制备技术的发展方向进行了展望。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐