浇注

The key products of the company are high alumina brick ,fireclay brick ,phohate-bonded wearable brick,exfoliation-resistant high alumina brick,High refractorine under load brick,corundum brick,magnesite brick,magnesite chrome brick,series of corundum,SIC furnace chamber and pipe , ceramisite brick, corundum-mullite brick,corundum-chrome brick,sillimanite brick,magnesite alumina inel brick,acid-resistant brick,alkali-resistant brick , zirconia-corundum brick , alumina bule products, series thermal iulating refractory products ,high alumina castable,corundum castable ,corundum ramming ,brown-corundunm castable ,SiC castable ,low-cement castable ,alkali resistant castable ,Light silica alumina products, stainle steel fibre reinforced castable ,etc.

主要产品有：高铝质砖、粘土质砖、磷酸盐耐磨砖、抗剥落砖、高荷软砖、刚玉砖、碳化硅砖、镁砖、镁铬砖、各种刚玉、SIC炉膛、炉管制品、陶粒砖、刚玉莫来石砖、铬刚玉砖、硅线石砖、镁铬尖晶石砖、耐酸砖、耐碱砖、锆刚玉砖、氧化铝空心球制品及各种轻质保温材料、高铝质浇注料和刚玉浇注料、捣打料、棕刚玉浇注料、碳化硅浇注料，低水泥浇注料、抗碱性浇注料、轻质硅酸铝制品、钢纤维增强浇注料等80余种系列耐火材料。

Long-term with the Luoyang Refractory Material Research Institute, Beijing University of Science and Technology, Anshan University of Science and Technology, such as metallurgy research institutions to collaborate, has developed the metallurgy, coking industry in various grades×, silica brick, clay brick, magnesia brick, magnesia-chrome brick, MgO-C Bricks aluminum, chromium corundum brick, insulation brick light, etc.; cement industry with anti-spalling×, alkali brick, silicon brick Mo, direct combination of magnesia-chrome brick, periclase-spinel brick, phosphorus acid brick, high-phosphate soft Dutch bricks, special bricks, such as phosphate; generating boiler industry with a variety of brands wear-resistant brick, corundum brick, mullite brick, such as stereotyped products and wear resistant castable, corundum castable, high-strength low cement castable, impermeable material, gravity feed can be plastic, various grades, such as fire-resistant mud Unshaped Materials, in which silica brick and light insulation brick production line for the national output of a single one of the largest production line.

公司长期与洛阳耐火材料研究院，北京科技大学，鞍山冶金科技大学等科研院校开展协作，先后开发出冶金，焦化行业用各种牌号高铝砖，硅砖，粘土砖、镁砖，镁铬砖，铝镁碳砖，铬刚玉砖，轻质隔热砖等；水泥行业用抗剥落高铝砖，耐碱砖、硅莫砖，直接结合镁铬砖、方镁石尖晶石砖、磷酸盐砖，高荷软磷酸盐砖、特种磷酸盐砖等；发电锅炉行业用各种牌号耐磨砖，刚玉砖，莫来石砖等定型产品和耐磨浇注料、刚玉浇注料、低水泥高强浇注料、防渗料，自流料，可塑料、各种牌号耐火泥等不定型材料，其中硅砖和轻质隔热砖生产线为全国单台产量最大的生产线之一。

On the basis of total analysis and summarization on basic knowledge, principle and expert experience of injection mould feed system as well as further research on the computer-aided design of injection mould feed system, according to the geometrical model of the plastic, applying technologies including feature-based modeling and identifying, RBR, CBR, oriented-object and database technology VC++ 6.0, SQL Server 2000, Object ARX, the paper conceives general structure and primary function module of the intelligent design of injection mould feed system, develops user-systemic interface, constructs knowledge rule library and case library of injection mould feed system, researches denotative method of knowledge rule library and case library, designs the ratiocinative mechanism of intelligent system design, and realize the intelligent design of injection mould feed system partly.

本文在对注塑模具浇注系统设计的基本知识与原则及专家经验全面分析总结，以及对计算机辅助浇注系统设计方法深入研究的基础上，以塑件几何模型为依据，应用基于特征的建模与识别技术、RBR和CBR推理技术、面向对象和数据库技术，以及VC++6.0、SOL Server 2000和Object ARX二次开发工具，在AutoCAD 2002平台上，构建了注塑模具浇注系统智能化设计系统的总体结构及主要功能模块，开发了系统的用户界面，建立了浇注系统设计的知识与规则库和事例库，研究了设计知识与规则和事例的表示方法，设计了智能化设计系统的推理机制，部分实现了注塑模具浇注系统的智能化设计。

The casting and moulding process for forming the polyurethane sieve plate s is introduced briefly.

简要介绍了聚氨酯筛板浇注成型工艺过程，重点叙述了聚氨酯筛板浇注成型模具及浇注平台的结构与设计要点。

When the gate system is choked at the bottom of the sprue ,it is called a nonpressurized system.

如果浇注系统在浇注口的底部进行阻塞的话，这就是一个开放式浇注系统。

Compared with other available instruments the velometer has the advantages of highly automatic operation, rapid response, flexibility and relatively much lower cost. 2 Sequential flow is the most important function of a step gating system. Till now the studies about it have given little information.

针对以往关于阶梯浇注系统研究中，对各层内浇口分层注入功能研究不够，缺乏定量测量结果的不足，本文工作中采用微计算机化的光电非浸入式流速测量仪，首次实现了对几种典型的阶梯式浇注系统各层内浇口流速在浇注过程中变化情况的动态测量。

When the pouring temperature is close to the liquidus temperature of AlSi7Mgalloy, the primary α-Alin the billets of AlSi7Mg alloy solidifies into spherical or nodular grainswhich are small and distributed homogeneously. In order to obtain non-dendritic semi-solidbillets,the appropriate pouring temperature is 615℃. The faster cooling rate,the melt flowing and largersolidification region induced by the near liquidus pouring temperature promotes theformation of spherical or nodular primary α-Al.

实验表明：当浇注温度接近液相线温度时，AlSi7Mg合金中的初生α-Al凝固成球状或粒状，晶粒细小，分布均匀；获得球状或粒状AlSi7Mg合金半固态坯料的最佳浇注温度为615℃；在接近液相线温度下浇注，较快的合金熔体冷却速度、浇注引起的合金熔体活动和大范围的同时凝固促使AlSi7Mg合金形成球状或粒状的初生α-Al组织。

There was difference between differentkinds of submerged entry nozzle and no using SEN. Because columniform nozzlecan impinge deeply, so inserting it into steel liquid should be not too deep, which the bestdepth is about 100mm.

结果显示直筒型水口浇注流场与敞口浇注以及双向侧孔水口浇注的流场存在差异；直筒型水口冲击深度较深，与板坯侧孔水口相比浸入深度应较浅些，适宜深度为100mm。

Three components of peroxide in the activator amongwhich have the different decomposed temperatures made the Vinyl-ester resinsolidified heat discharge increased that gained a bigger solidified degree. Theactivator-adopted quantity can dramatically affect the casting samples performance:eg. When use 1.0-1.4 portions of activator, the casing sample can reach its maximumTensile strength and Bend strength; when use more activator, the polymeric meshworkcontracted which embrittle the casing sample and reduce the dynamic performance; Inthe Pultrusion processing, when CF composed of about 60vo1%, more demould agentcan bring the better processing but degrade the CFRP, normally use around 1.2 portion.

采用具有不同分解温度的三组分有机过氧化物引发剂，乙烯基酯树脂的固化反应放热量增加，固化程度提高；引发剂用量对浇注体的性能影响很大，在用量为 1.0~1.4 份时，浇注体拉伸强度剂弯曲强度达到最高，过多的引发剂使聚合网络减小，浇注体变脆，力学性能降低；在拉挤成型工艺中，碳纤维的体积含量一般为 60%左右，脱模剂增加使加工性能好转但会使复合材料性能下降，一般用量为 1.2 份。

By the concrete index and using request of 1 375 ℃ high strength castable refractory , 1 204 ℃ heat insulating refractory, 1 260 ℃ heat insulating refracrory,1 09 3℃ heat insulating refractory and 1 316 ℃ Si castable, the castable refractory for CSP billet soaking furnace is researched, which is acquired the good using effect.

根据CSP薄板坯均热炉用1375℃高强度浇注料、1204℃隔热浇注料、1260℃隔热浇注料、1093℃隔热浇注料和1316℃熔合硅浇注料的具体指标和使用要求，结合国内耐火原料的特点，研制出了满足CSP薄板坯均热炉使用需要的耐火浇注料，达到了预期效果。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。