浅谈察尔汗盐湖地区地基处理及基础选型

针对盐湖地区地基的工程特点,指出了当前盐湖地区地基处理及基础选型中的一些常见方法和相关问题,并进行了归纳总结,同时给出相应的处理建议,以保证盐湖上修建的结构物稳定安全。     

夹网成形器的脱水与成形

简要介绍了夹网成形的特点和优势.以Mesto的Opti Former成形器和Voith的Duo Former成形器为例,重点论述了夹网成形的脱水原理、脱水过程及各元件的脱水比例,最后介绍了夹网成形器的成形过程和影响因素.     

灯泡贯流式水轮发电机通风系统的有限元计算

采用有限元方法对5500kW/6471kVA灯泡贯流式水轮发电机通风系统进行了求解,得到了通风系统的压降分布和速度分布.水轮发电机的结构对通风系统的压降影响较大,通过计算发现压降较大的部位并对其进行了修改.设计好的机组目前已投入使用,运行情况良好.     

咬缝成型机设计

运用板料滚压成形原理,设计研制了通用的咬缝成型机。该机结构简单,移动方便,易于调节,便于操作,有较高的生产能力。     

Determination of activation temperature of glass bulb sprinklers using a thermal liquid bath

A thermal liquid bath was used to determine the activation temperature of a wide range of temperature rated (57–182°C) glass bulb (3 and 5 mm diameters) sprinklers using water and glycerine. An optical switch and a thermocouple were installed adjacent to each sprinkler (within 10 mm) to record the activation of each glass bulb in the liquid bath having a uniform temperature distribution (±0.5°C). All the tests for determining the activation temperatures of glass bulb sprinklers were conducted in the liquid bath using a 0.277°C/min rate of temperature rise. Based on a heat transfer analysis, this rate is within the maximum allowable rate of rise of water and glycerine temperatures, which allows the glass bulb temperature to closely follow the liquid temperature. The sprinkler activation temperature was evaluated in terms of percentage rating, which is expressed as the percent variation of the average activation temperature, as measured in the liquid bath, from the nominal rated temperature. Sprinklers (93°C rated or lower) activation temperatures in water were consistently within ±3.5% of rating. In glycerine, the activation temperatures of sprinklers rated between 93 and 182°C performed within 3.5% of their rating. Copyright © 2005 John Wiley & Sons, Ltd.     

孔板式锥形布浆器在圆网网槽成形器上的应用与设计探讨

结合应用和设计计算实例,介绍了孔板式锥形布浆器在一般圆网造纸机网槽成形器上的应用。并对应用原理、设计要求和参数等具体问题进行了探讨。     

塑料双壁波纹管成型技术

论述了国内外塑料双壁波纹管成型工艺和成型设备的技术要点。     

泡灯式水轮发电机主件制造工艺介绍

本文扼要介绍了灯泡式水轮发电机主件及关键工序制造工艺（冷加工及装配部分）。     

简化方锥进浆圆网成形器

本文论述了一种简化方锥进浆圆网成形器的设计原理、结构。试用结果表明，这种成形器具有成纸匀度好，纸张纵横向抗张强度比小的特点，而且结构简单、体积小、制作容易、费用低，因而是一种很好的圆网成形器。     

Influence of the Film Former on Fibre-Matrix Adhesion and Mechanical Properties of Glass-Fibre Reinforced Thermoplastics

The film former is in mass percentage the main component in most glass fibre sizes. Its influence on the fibre-matrix adhesion and the compound properties is studied in two thermoplastic matrices, i.e. polypropylene (PP) and rubber-modified styrene-co-maleic anhydride. The composition of the size is varied by changing the chemical nature and molecular mass of the film former and by leaving out the silane. The size's morphology on the glass fibres is studied with scanning electron microscopy and X-ray photoelectron spectroscopy. The effect on fibre-matrix adhesion is inferred from 0° bending and interlaminar shear strength measurements of unidirectional, continuous fibre reinforced composites. The possible effect of the film former on matrix crystallinity in PP is studied with differential scanning calorimetry and polarized-light microscopy. The same sizes are also tested in injection moulded, short fibre reinforced compounds by measuring their mechanical properties. In addition, the diffusion of the size into the matrix is studied by confocal scanning laser microscopy. The main conclusion of this study is that the film former plays a crucial role in the level of fibre-matrix adhesion because it does not diffuse away from the fibre-matrix interface into the matrix. Its effect may be larger than that of the silane. In addition, most mechanical properties of short fibre reinforced compounds improve with increasing fibre-matrix adhesion.