4F0.06AC树脂吹塑薄膜技术的探讨

在加工应用试验的基础上。探讨了加工温度、吹胀比、超想线高度及设备对４Ｆ０．０６ＡＣ薄膜适宜的加工条件。     

注入种子CuBr激光器中的光谱控制

报道了采用注入种子方法．对ＣｕＢｒ激光器进行激光模式控制的实验结果。实现了单纵模ＣｕＢｒ激光脉冲的注入放大，获得了功率为１００ｍＷ水平的窄线宽铜激光辐射．在理论上分析了短脉冲高增益激光器中注入种子过程，讨论了在注入种子ＣｕＢｒ激光器中进行光谱控制的实验结果．     

临盘油田分层注水管柱有效率影响因素分析

分层注水管柱有效率低一直是困扰临盘油田开发生产的一大难题。针对这一现状，在分析油藏结构、施工工艺和现场资料的基础上，分析了影响分层注水井管柱有效率的因素，阐述了封隔器、工艺操作、管枉自身及温度等制约分层注水管柱有效率提高的原因，并提出了相应的对策和措施。     

注塑件/模具成本评估方法研究综述

对注塑模成本评估领域的主要研究方法进行了分析 ,指出了相关的几个成本评估流派。着重对成本评估的CEF方法进行了总结 ,并对当前国际上流行的派别的优缺点进行了总结。文末 ,给出了我们的研究思路大体概述     

Influence of the temperature profile in the interface on the bond strength of polyamide–polyurethane two‐component tensile bars

Two‐component tensile bars with polyamide 6 (PA) and thermoplastic polyurethane (TPU) unmodified and modified with 4,4′‐diphenylmethane diisocyanate (MDI) have been investigated. It is known that the bond strength of PA/TPU tensile bars can increase by about 50% if MDI‐modified polyurethane is applied. The subject of these studies is the analysis of the influence of the mass temperatures on the bond strength. The mass temperatures of the first and second injection process and the delay time between the first and second injection processes determine the temperature gradient in the interface at the moment of the second injection. There is an increase in the bond strength when there is an increasing temperature gradient; therefore, the mass temperature of the first component at the delay time has to be lower than the mass temperature of the second component. The temperature gradient can be used as a measure of the thermal annealing of the first component near the interface during the heat transfer from the second component. It can be concluded that effective thermal annealing causes an increase in the bond strength. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4297–4305, 2006     

注气井中油管轴向位移计算比较分析

为了确定油管在正常作业、注入措施作业中封隔器的坐封位置、轴向位移补偿量以及判断封隔器是否解封,根据弹性力学理论得出了不同条件下油管柱的轴向位移量,综合考虑了在不同工况下由活塞效应、螺旋弯曲、径向压力、温度变化、松弛力以及摩阻等因素引起的油管轴向位移;同时考虑了在注气油管内气体的横向压力效应,运用VB语言编制程序,将各自计算结果进行了比较分析。结果表明,在注气油管内考虑横向压力效应时与常规油管长度计算油管轴向位移有明显差异;油管内液体流动引起的油管轴向伸长与注入速度的平方成正比,在注入速度过大时对轴向位移有明显影响。     

Advances in titanium metal injection molding

The approaches to production of titanium powder injection molded parts are reviewed. Historically, oxygen levels have been too high for structural use (particularly with the Ti-6Al-4V alloy). However, recent advances in starting powders, binders and sintering facilities now allow oxygen levels in the Ti-6Al-4V alloy to be controlled to about 0.2 wt.% oxygen. This should result in significant expansion of the titanium PIM market place into aerospace, automobiles, surgical instruments, dentistry, communication devices (such as computers and cell phones), knives and guns. __________ Translated from Poroshkovaya Metallurgiya, Vol. 46, No. 5–6 (455), pp. 118–125, 2007.     

异型材挤出口模内的流动模拟

本文根据挤出机理，对口模内的流动行为进行适当的简化和假定，建立了挤出口模内流动分析的数学模型，并采用横截面／假想区域法实现了复杂异型材挤出口模内的数值模拟，数值分析结果与三维有限元解和解析解的对比，取得了满意的效果。     

沙南油田高效开采技术政策研究

在该油藏大量动静态研究成果的基础上 ,根据国内外相似油田开发实例 ,运用数理统计、渗流力学、油藏工程及数值模拟的方法 ,结合矿场实际资料 ,对油藏进行天然能量、井网密度、注水系统、采油系统、最终采收率等参数的研究 ,获得了油田高效开发的技术界限。     

MARK-Ⅳ型气化炉气化剂均布的探讨

通过对炉篦的结构分析 ,并考虑炉内搅拌器的作用 ,结合原料煤的特性 ,提出气化剂均布的原则及方案 ,以改善气化炉操作功效