陶瓷坯釉料配方设计及其优化方法研究

针对陶瓷坯釉料配方设计问题,提出以每吨釉料成本最低作为目标函数并建立相应的数学模型,然后将Excel 2003的“规划求解”功能应用于陶瓷坯釉料配方优化设计中,实现了多种因素影响条件下成本最低的陶瓷坯釉料配方设计方案,得到了满意的优化结果。该设计方法使用方便,操作简单,大大提高了工作效率,具有一定的实用和推广价值。     

陶瓷坯釉料配方优化算法及其实现

陶瓷坯釉料配方最优化计算是陶瓷工艺中的关键技术之一。本文利用复合形优化算法选出最佳的配方比例,通过加权值的调整,使得陶瓷坯釉料配方结果完全满足优化目标。     

求解广义逆矩阵方法在陶瓷坯料配方设计中的应用

陶瓷坯料配方问题数学化,建立数学模型—广义逆矩阵。将陶瓷配方问题转化为求解广义逆矩阵的问题,用计算机程序在一定的误差允许的范围内以求解广义逆矩阵问题的方法得到最优坯料配方。通过配方试验验证,用该方法能够得到最逼近目标坯料的配方。     

电脑辅助陶瓷配方设计

采用电脑来设计陶瓷配方是陶瓷配方设计人员梦寐以求的.笔者采用最优化技术和VB编程语言设计"配方设计3.2"程序.实现了电脑辅助陶瓷配方设计这一梦想.其基本原理请看笔者在<中国陶瓷>1999年8月第4期发表的<最优化技术在陶瓷配方中的应用>.     

陶瓷配方设计的灰色优化方法

首次将灰色优化方法应用于陶瓷配方设计。讨论了陶瓷配方设计中多因素信息不明确的状态下,如何获得质量最高、成本最低的陶瓷配方设计方案。并且介绍了如何采用MATLAB和LINDO软件进行求解。     

来稿摘要选登

本文以电瓷釉料配方为例,介绍了陶瓷配方的回归正交试验设计方法,并利用回归方程提出了一种最优化处理数学模型,还讨论了配方中各单种原料配比对釉料性能的影响,得到了预想的效果。此方法也适用于陶瓷坯料和玻璃等材料的配方处理。     

大规格轻质陶瓷板的研制

本文以陶瓷抛光废渣为主要原料,通过配方优化、烧成制度的设计及装备设计,研制了大规格轻质陶瓷板,其规格达1000mm×2000mm以上.既为市场提供了一种新的建筑装饰材料,也为解决陶瓷抛光废渣的出路提出了新的方向.     

陶瓷坯釉料配方最优化计算集成软件的研制

陶瓷坯、釉料配方的最优化计算是工艺技术人员需解决的工艺关键技术问题之一.本工作运用现代数理统计和运筹学理论,采取试验设计与实施——建立性能与组成、工艺条件之间关系的定量数学模型——寻优或多目标决策分析的所谓“三部曲”的技术路线进行配方的优化设计.在此基础上研制了最优化计算集成软件,主要包括以下功能模块:配方计算、建模、寻优和多目标决策分析,预报性能及绘制性能等值线图.在研制该集成软件时.我们设法使在DOS下开发的FORTRAN程序能在Windows环境下正常运行,用GRAFTOOL工具绘图软件绘图,并利用Visual BASIC开发工具做界面设计.将所有的应用程序集成在一个统一的操作平台之上.大量计算实践表明该集成软件的功能齐全,符合软件工程设计要求,能较好地满足陶瓷坯釉配方设计要求,可在本行业内及相近行业中推广使用,可望对配方设计的科学化、规范化和电算化起到推动促进作用.     

陶瓷坯釉料配方系统的研制

陶瓷坯釉料配方的最优化计算是工艺技术人员需解决的工艺关键技术问题之一。采用C语言设计了复合形法陶瓷配料优化模块,并在Visual Foxpro5.0平台上开发了陶瓷数据库管理系统及其应用软件。该软件包包括数据库管理、最优化计算、性能计算、系统维护、帮助系统等五大模块。初步应用表明:该软件包功能齐全、计算速度很快,能满足陶瓷企业配方设计与管理要求。     

Ti3SiC2/Al2O3陶瓷基复合材料支护托板结构优化设计

本文以ANSYS优化设计基本理论为基础,以ANSYS为模拟分析软件,通过对Ti3SiC2/A12O3陶瓷基复合材料支护托板进行结构优化设计,最终得到满足强度要求、容易成型、且成本较低的矿用支护托板.为工程上的支护托板的优化设计提供了依据.     

氢气纯度分析方法准确性的探讨

ONACCURACYOFANALYSISOFOFHYDROGEN1前言我公司目前应用的氢气纯度分析方法有两种,一种是爆炸反应法,另一种是焦性没食子酸吸收法。几年来,人们对两种分析方法的准确性曾有过褒贬不一的评论。这里我们也谈谈自己粗浅的观点。2爆炸法测定氢气纯度一定量的氢气样品与适量的空气之均匀混合物因反应后生成液体水而引起气体体积减少,减少的体积等于参加反应气体体积之和。其中l／3为氧气,2／3为氢气。根据氢气取样量和反应前后混气体体积之差,以及氢气在反应中的体积比例关系,可计算出样品的氢气纯度。计算公式式中：A一混…     

COMPARISON OF METHODS OF ANALYSIS OF GYPSUM1

The different analytical methods proposed for the evaluation of gypsum have been subjected to an experimental test. A combination method, consisting of a fusion with KHCO₃ and determination of CaO by KMnO₄ titration, the SO₃ by Andrews method of titration of BaCrO₄ has been found to give very reliable results with the least consumption of time.     

SEDIMENTATION OF BINARY MIXTURES OF PARTICLES OF UNEQUAL DENSITIES AND OF DIFFERENT SIZES

A model is developed for the sedimentation from a suspension of two particle species of unequal densities and of different sizes. The composition and the thickness of various layers in the sediments are predicted using graphical and analytical methods. The model predictions were in excellent agreement with experimental results, when the particle size ratio was ≥ 108. When size ratio of the particles was 2.60 and 4.31 the agreement occurred in about 50 percent of the cases.     

HEASUREHENT OF INSTANTANEOUS RATES OF LOSS OF VOIATILE COMPOUNDS DURING DRYING OF DROPS

A novel technique serves to monitor instantaneous rates of loss of a volatile solute from a suspended drop during drying. A highly sensitive electron capture detector is used to monitor concentrations of SF6 released into a flowing gas stream from a suspended, drying drop. Simultaneously, the appearance and morphological development of the drop are monitored with a video camera. This provides the wherewithal of relating instantaneous rates of loss of the volatile solute to particular events during the development of particle morphology.

Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology.     

茶多酚提取方法进展

本文综述了国内外现有茶多酚提取方法的现状以及近期的研究进展，并对其优缺点进行了评价。这将有助于中低档茶的综合利用和茶多酚的进一步开发应用。     

几种针状焦性能对比

针状焦分石油系和煤系两大类,这主要取决于针状焦的原料来源。在同一系列中由于原料不同和工艺条件不同 ,针状焦的各自性能也不相同。针状焦是生产超高功率石墨电极和高功率石墨电极的主要原料 ,针状焦的性能对石墨电极的质量有至关重要的影响。所以对针状焦性能以及其对石墨电极质量影响的研究十分必要的。以下是常用的几种进口针状焦和国产针状焦的性能对比。１原料性能分析对比原料试样包括４种针状焦 ,其中两种为进口针状焦：三菱针状焦和新日化针状焦;另两种为国产针状焦：鞍山针状焦和锦州针状焦。其中除锦州针状焦是石油系针状焦外…     

ANALYSIS OF RECENT MEASUREMENTS OF THE VISCOSITY OF GLASSES

Viscosity of Simple Soda-Silicate 500° to 1400°C Comparison of the results given by English with those of Washburn, Shelton and Libman, indicates a discrepancy in the absolute values of log₁₀ viscosity amounting to 0.6, those of Washburn et al., being relatively too high. If correction for this is made, the isothermal curves of log₁₀ viscosity as a function of soda content are smooth up to 50% Na₂O, showing no inflection. The observations as a function of temperature T are all represented within accidental error by an equation of the type where all three constants vary regularly with the composition. Change of Viscosity of Glass (6SiO₂, 2Na₂O) due to Molecular Substitution of CaO, MgO and Al₂O₃ for Na₂O The effect is clearly brought out by plotting (from the results of English) the change of log₁₀η due to the substitution as a function of temperature. The curves each show a sharp bend at a temperature between 840° and 1050°C, which is designated the aggregation temperature T_a. If we divide these curves by the corresponding percentage substituted, we get curves for each oxide which are straight and parallel below the aggregation temperatures, the slopes (increase of change of log₁₀η per 100°C) being −0.056 (CaO), −0.055 (MgO), −0.018 (A1₂O₃) per per cent oxide substituted. For substitution of 1/2 molecule the slopes are −0.325 (CaO), −0.23 (MgO) and −0.18 (Al₂O₃) per 100°. At the aggregation temperature the change of log₁₀η per per cent is a minimum, 0.03 to 0.06 for CaO, 0.12 for MgO, 0.07 for Al₂O₃. Evidence of Aggregation in Glasses, from viscosity Measurements The sharp bends in the plots of change of log₁₀η due to substitution of an oxide for Na₂O, suggest the beginning of molecular aggregation at these temperatures. These aggregation temperatures are close to the devitrification temperatures, but the effect on the viscosity curves cannot be due to actual devitrification since it does not change with time. Taking the aggregation temperatures as equal to devitrification temperatures, additional isotherms are roughly sketched into the equilibrium triangle of the system Na₂O-CaO-SiO₂. Change of Viscosity of Glass (4SiO₂, 2Na₂O) due to of Substitution of B₂O₃ for SiO₂ The change of log₁₀η (from the results of English) is plotted as a function of temperature, and also the change of log₁₀η per per cent B₂O₃. The curves are more complex than for the substitution for Na₂O.     

环氧树脂羟基值测定方法的研究

利用乙酸酐、吡啶和浓硫酸混合的乙酰化试剂测定环氧树脂中羟基值含量的方法具有操作简便、滴定终点明显和分析结果误差小等优点。     

骑式摩托车油箱喷涂工艺的改进

面对日益激烈的市场竞争,摩托车油箱外观质量越来越成为影响销售的因素之一。文章介绍了改进工艺后的油箱涂装,该涂装体系提高了油箱外观的丰满度,降低了油箱涂装的生产成本。     

聚酰亚胺的合成法

本文评述了缩聚型聚酰亚胺的主要合成方法和近年来国际上在合成中所做的探索。