卫生陶瓷,高压注浆成坏速率的研究

卫生陶瓷中、高压注浆成形工艺是当今世界卫生陶瓷成形的最新工艺。本工文运用某卫生瓷厂实际在生产中所用的配方和原料，通过试验设计，运用回归分析技术研究了泥浆的触变性及泥浆组分的颗粒级配对中、高压浇注成形的成坯速度的影响。     

卫生陶瓷高压树脂模型注浆成形工艺

较详细论述了高压树脂模型注浆成形机理、高压注浆成形各阶段工艺参数的作用与坯体质量的关系，以及影响高压注浆成坯质量的其他因素。对卫生陶瓷高压注浆成形工艺的优缺点及应用前景进行了分析，以使国内同行对采用高压注浆成形工艺制造卫生陶瓷有一个初步认识，为今后高压注浆成形工艺在国内推广提供参考依据。     

卫生陶瓷快干微压组合注浆成形设备

1前言要使卫生陶瓷产品使用功能良好，造型美观，生产企业必须考虑注浆成形这个非常重要的环节，即成形坯体的强度、合格率、含水率、生产能力等。目前国内外厂家主要采用的成形方法为地滩注浆成形、微压组合注浆成形、低压快排水注浆成形、中压注浆成形及高压注浆成形。为了提高效率、降低成本、保证合格率，快干微压组合注浆成形是近年来卫生陶瓷生产中出现的一种新的成形工艺，代表着注浆成形技术及装备的发展方向。2工作原理注浆成形过程中由于模具的多孔性，可吸收坯浆中的水份，与模具表面接触的泥浆形成一层坯体，随着水份的不断析出…     

卫生陶瓷低压快排水成形技术

在卫生陶瓷生产过程中,成形工艺是关键技术之一。长期以来,落后的成形工艺一直制约着我国卫生陶瓷工业的发展。目前先进的卫生陶瓷厂均采用了以组合浇注为主、低压快排水及中、高压注浆成形并存的工艺。卫生陶瓷低压快排水成形工艺是当前组合浇注技术中较为先进的成形工艺,具有生产效率高、坯体质量好、成品率高、工作环境好等特点,是卫生陶瓷成形技术的发展方向。     

高压注浆成形工艺步骤及参数确定原则的探讨

本文分析了卫生陶瓷高压注浆成形工艺中坯体形成的特点，在大量实验的基础上，对目前的高压注浆工艺步骤进行改进，提出了符合高压注浆成形工艺的参数确定原则。     

问：卫生陶瓷注浆成形工艺经历了几个过程？请给予介绍。

答：卫生陶瓷成形工艺方法基本经历了传统的地摊式注浆、架子管道注浆、机械化组合浇注过程；由自然注浆到压力注浆（微压、中压、高压）的过程。     

卫生陶瓷泥浆的进化视角

卫生陶瓷泥浆进化视角,从传统石膏模具成形方法与低压快排水技术、高压成形技术等新型成形方法对排水速度、成形效率以及坯体强度的影响方面进行了比较。阐述了不同成形方法对所需泥浆在可塑性、吃浆速度和干坯强度等方面不同的性能要求和影响因素。     

国外卫生陶瓷压力注浆成形技术考察

着重介绍了卫生陶瓷压力注浆成形技术国内外发展概况;国外压力注浆成形的泥浆技术、模具材质和制模技术;高压注浆成形与传统注浆成形的经济比较;提出了对我国发展压力注浆成形的看法。     

卫生陶瓷高压成形关键技术及经济分析

针对卫生陶瓷行业的实际生产状况,分析了制约企业发展的关键因素,提出应用高压成形技术进而对该技术的成功关键因素进行了系统性分析,归纳为设备研制技术、模型研制技术、泥浆技术、操作方法、现场管理等五大因素,结合国内外最新资料,较为详细地分析了卫生陶瓷高压成形设备的经济指标.得出结论:国内已经具备高压成形技术量产应用的能力.有一定经济实力、生产数量大的企业,若能全面系统地应用好高压成形技术,其生产成本比传统石膏模成形方式具有优势.     

陶瓷卫生洁具的高压注浆成形

目前，注浆成形是卫生陶瓷成形的唯一方法。在探讨高压注浆成形的机理及产生背景，提出了高压注浆成形的基本定义，分析了高压注浆与普通石膏模注浆两者之间在机理和工艺上的异同。     

聚氨酯筛板的生产工艺及性能比较

聚氨酯筛板是一种以聚氨酯为主要原料生产的网状制品,是众多弹性体中的一种。介绍了常压法浇注聚氨酯筛板的工业生产工艺,具体说明了预聚体的合成、常压下的浇注工艺——手工及机械浇注的方法,列表比较了聚氨酯筛板与钢制筛板的性能、各种聚氨酯筛板之间的性能比较及影响因素。     

Compression Permeability of Al2O3 Cakes Formed by Pressure Slip Casting

The pressure gradient naturally effected across the cake on pressure casting can lead to pore-character gradients and dimensional distortion if the cake is significantly compressible. The compressibilities of cakes formed on pressure slip casting of aqueous Al₂O₃ slips defiocculated with an organic polyelectrolyte were determined for applied pressures ≤500 psi. In general the compressibility decreased with increasing pressure. Improved deflocculation of slips from which cakes were formed drastically reduced the level and pressure dependence of compressibility; cakes cast from well-deflocculated slips were insignificantly compressible. Specific resistances determined concurrently agreed well with results obtained previously in kinetic studies. Compression-permeability behavior can serve as a quality control test for the slip casting of technical ceramics.     

石膏模具的改性研究

本文介绍了以苯丙乳液为改性剂对。一石膏进行改性研究的情况,通过研究选出了改性剂的品种及最佳加入量,所进行的洗面器中压注浆试验证明,改性后的石膏模可用于卫生瓷中压注浆成形工艺中。     

Colloidal Filtration of Silicon Nitride Aqueous Slips,Part II: Slip Casting and Pressure Casting Performance

In a previous part, the rheological behaviour of silicon nitride aqueous slips was optimized by dispersing with TMAH up to pH 11·5 using different mixing procedures and including different concentrations of sintering aids (Al₂O₃ and Y₂O₃). In this part, the obtention of pressureless sintered silicon nitride bodies by colloidal filtration techniques is studied. The kinetics of the different compositions is studied for both slip casting and pressure casting. The pressure casting kinetics is up to 20 times faster than that of slip casting, which allows the scale-up of the process for a low cost production, The obtained green density is slightly >58%th for slip casting and 57–55%th for pressure casting, depending on the applied pressure. This small difference does not influence sintered density. At 1750°C/2h, a final density around 96%th is obtained. The sintering conditions are studies considering the time, temperature, atmosphere and sintering bed. The best results are obtained when the sintering bed has the same composition to that of the sample to be sintered. The room temperature properties of the sintered materials show a K_IC value higher than 6 MPam^1/2, comparable to those found in the literature for pressure sintered materials.     

钛酸铝陶瓷升液管的研制

介绍了二步法制备钛酸铝陶瓷升液管的工艺。讨论了添加剂和工艺因素对钛酸铝陶瓷升液管性能的影响。研究结果表明，添加适量的添加荆和采用合理的制备工艺参数，可以制备出性能优良的钛酸铝陶瓷升液管，满足铝合金低压铸造机的使用要求。     

Pressure filtration assisted gel casting in translucent alumina ceramics fabrication

High density and homogeneous green body is important for fabricating transparent ceramics. Inspired by the improved samples’ homogeneity in slip casting, we introduced low pressure filtration to gel casting to further increase the relative density and homogeneity of the green body and to shorten the drying time. The effect of pressure filtration on drying characteristics, bulk density and porosity of the pre-sintered bodies, and the microstructure and optical transmittance of the resultant ceramics were intensively investigated. The results showed that pressure filtration can reduce the drying time by 27.3%, improve the density of the pre-sintered bodies and reduce the residual pores of the sintered ceramics. The in-line transmittance of the translucent alumina prepared by the pressure filtration assisted gel casting was 32.7% at 600?nm with a thickness of 1?mm, which is about 6% higher than that without pressure filtration. In principle, this process can be applied to fabricate any other high-performance ceramic.     

卫生陶瓷压力注浆成型的泥浆性能研究

研究了卫生陶瓷压力注浆成型的泥浆性能，通过一系列试验，讨论了泥浆性能对压力注浆成型的影响。     

日用陶瓷立式高压注浆机模板的有限元分析

简述了日用陶瓷高压注浆的原理,对某型日用陶瓷高压注浆机的模板进行了设计和有限元分析.该模板可用于卧式和立式高压注浆机,分析表明该模板的强度和刚度均满足设计要求.