水平钢化玻璃生产线的PLC全自动控制

介绍了一套平板玻璃水平钢化生产线全程PLC控制系统,阐明了该系统的优越性,给出了系统框图及PLC程序流程.     

对乳白玻璃瓶缺陷的改进

分析了乳白玻璃瓶缺陷产生的原因并提出相应的解决措施.     

Floc breakage in agitated suspensions: Effect of agitation rate

A population balance equation that governs the floc size distribution in turbulent flow, incorporating both the splitting and erosion mechanisms of floc breakage has been presented in previous studies[6,7]. Experiments have been conducted in which transient floc size distributions of dilute suspensions of Kaolin-hydrous ferric-oxide flocs undergoing breakage in agitated batch system are obtained over turbulent microscale shear rates ranging from 60 to 400 sec^?1. Floc size distributions over a range of floc diameters from about 1 to 100 μ m are measured by overlapping techniques, including computerized optical scanning of photographs and rapid electronic sizing of individual flocs using a light blockage transducer. The experimentally determined size distributions are then fit to those computed from the population balance equation, using constrained nonlinear least squares. The splitting frequency of parent flocs is found to vary as the 0.33 power of the parent floc volume and 0.71 power of the shear rate. The average number of daughter fragments produced upon splitting of individual flocs is found to be about 2.5. The mean and standard deviation of the daughter fragments produced upon splitting are found to be in fixed ratio to one another, independent of the parent floc size and shear rate. An appropriately nondimensionalized coefficient characterizing floc erosion has been found to be independent of shear rate.     

玻璃带炸板后跑尺现象研究及探讨

针对德国GRENZEBACH公司的切割机在切割断炸脱离玻璃带的过程中玻璃板出现跑尺现象,经过在认真探讨研究后提出只有解决切割机速度跟踪和切割系统中的速度跟踪精度问题,才能消除玻璃带炸板后跑尺现象。