移印技术在火花塞瓷绝缘体上的应用

本文较为系统地介绍了移印机的工作原理及在火花塞瓷绝缘体上的具体应用。     

滚镀工艺在火花塞生产中的应用效果分析

随着汽车行业的不断发展,市场对火花塞的需求量激增,对火花塞产品的质量要求越来越严格,火花塞挂镀工艺因生产效率低、人工插挂的不可靠性、挂具的不稳定以及镀层的不均匀性的缺点,严重制约着火花塞的发展,火花塞滚镀工艺成为市场发展的主流。分析了火花塞的结构与作用、火花塞壳体表面处理工艺,滚镀工艺在火花塞生产中的应用效果。结果表明,与挂镀工艺相比,滚镀工艺的产品质量大为改善,劳动效率大幅提高,经济效益显著提高。     

移印技术在火花塞瓷绝缘体上的应用

本文较为系统地介绍了移印机的工作原理及在火花塞瓷绝缘体上的具体应用。     

火花塞瓷件黑釉的研制

本文根据火花塞瓷件95氧化铝瓷的特性要求,对黑釉的配方及上釉工艺进行了研究。在满足火花塞技术要求前提下,瓷件上黑釉,可以改善火花塞整体外观质量。结果表明:火花塞瓷件伞棱表面釉层纯黑发亮,釉面商标采用特制花纸烧成,装配成的火花塞精致美观。     

微波在陶瓷制品干燥、素烧和烧成中的应用

本文介绍了微波的性质、卫生陶瓷的干燥以及产品成本,而且首次报道了烧成中使用微波加热的尝试。(例如:使用含96％的Al_2O_3元件和火花塞)     

甲基叔丁基醚（MTBE）对汽油性能的改善

本文介绍了甲基叔丁基醚对汽油辛烷值、饱和蒸汽压、馏程、发动机动力性能的影响，检测了排放尾气和火花塞积炭情况，说明甲基叔丁基醚是一个很好的汽油添加剂。     

司机加油站

何时应换火花塞?以前的车辆在做定期保养时必须做火花塞的保养,但现在汽车的零部件都比较耐磨,即使是很久才做一次检查,也不会有问题。现在的标准是,没有特殊原因,一般车辆大约三万公里左右需要换一次火花塞,但如果发现不好点火或点火时有“嘶嘶”的声音就表明火花塞需要更换了。打开引擎盖,你会看到一条黄色的线,     

行业动态

<正>新型陶瓷激光器有望取代火花塞据报道,国外设计出了一种新型激光器,可以取代火花塞为汽车发动机点火。这种激光器将两束或三束激光引入到发动机气缸内,且激光深度可以调整,以此点燃发动机内的油气混合物。传统火花塞仅仅可以点燃火花间隙附近的油气混合物,故燃烧效率不高,而且火花塞的金属也易腐蚀。但新型激光器可点燃更多的混合物,从而提高了发动机的效率并减少了污染。     

点火器火花塞的喷嘴可用硅橡胶制造

德国Beru Ruprecht GmbH公司专门生产汽车点火器的火花塞。现在该公司使用拜耳公司(Bayer AG)出品的硅橡胶SiloprenLSR制造火花塞喷嘴的罩套。这种点火器专用于有十六个活阀的发动机,火花塞的形状非常复杂。采用注压法在火花塞的环氧树脂绝缘层上套上硅橡胶Silopren LSR的罩套。     

电阻型火花塞耐老化性能研究

本文介绍了火花塞内陶瓷电阻体耐老化性的检测方法,并从电阻体结构尺寸对电阻体老化性的影响进行了许多试验,总结出电阻体长、直径大有利于电阻体的耐老化性。     

A RAPID-FIRE TUNNEL KILN DESIGNED FOR SMALL PRODUCTION1

A miniature tunnel kiln was designed to fire spark plug porcelain to cone 17. It is capable of producing about 10,000 porcelains daily. The total firing time is only slightly more than two hours. The kiln, its operation and efficiency is detailed.     

穿孔机顶头设计的ActiveX Automation方法

介绍了穿孔机顶头设计方法的现状和ActiveX Automation技术。利用VB6．0基于ActiveX Automation技术开发了穿孔机顶头专用设计计算程序,并调用AutoCAD给出了设计图形结果,是快速进行顶头设计的良好方法。     

新型长寿命低温处理透气砖的研制及应用

本文研制了一种新型低温处理透气砖,该透气砖在传统的刚玉.尖晶石体系中引入了2%～4%的单斜ZrO2,明显改善了材料的高温强度和抗侵蚀性能,尤其是材料的抗热震性明显优于烧成刚玉.尖晶石透气砖.该透气砖在生产过程中省略了高温生成工艺,能耗低于烧成透气砖,节约了能源,降低了生产成本.低温处理透气砖在60 t以下中小钢包上,使用次数可以达到128次,优于烧成刚玉-尖晶石质透气砖,在90 t以上大型钢包精炼上使用效果略优于刚玉-尖晶石透气砖.     

火花塞陶瓷绝缘体高温分流电阻的研究

火花塞陶瓷绝缘体的高温分流电阻会影响火花塞的使用性能和寿命,笔者研究了氧化铝中Na2O含量、配方组成和烧结温度对火花塞陶瓷绝缘体高温分流电阻的影响。结果表明:随着氧化铝原材料中Na2O含量的增加,试样的高温分流电阻逐渐降低;在配方组成中,当CaO的含量由33%增加至40%,氧化铝原材料中Na2O含量为0.1%时,试样在500℃时的分流电阻由517MΩ提升至1 192MΩ;烧结温度低于1 580℃时,试样的高温分流电阻较低。     

PEBBLE MILL LININGS1

Pebble mill linings used in the ceramic industries consist chiefly of flint, quartzite, and porcelain blocks. Rubber linings have had considerable attention recently. The advantages and disadvantages of each type are discussed. Data are given showing relative costs at the Champion Porcelain Company of Belgian flint, “sillimanite” spark plug porcelain, and one-piece rubber linings. Of the first two, the porcelain showed the lowest cost per year of service. The test of the rubber lining is not complete, but its high initial cost practically eliminates it on that basis. For special purposes the additional cost of the rubber lining might be justified.     

三相插头面盖注射模设计

采用电动机带动螺杆实现自动脱出塑件内螺纹的注射模具结构,经产品的批量生产验证,其脱模过程安全可靠,生产效率高,产品质量完全符合要求。     

透气砖在超高功率电炉上的应用

透气砖是超高功率电炉底吹技术的关键元件,本文介绍了国产透气砖在超高功率电炉上的应用情况.结果表明,国产透气砖具有优异的抗侵蚀性能、良好的高温力学性能和透气可调性,完全满足超高功率电炉底吹工艺的生产需要.     

Stratification of fuel for better engine performance

The concept of fuel stratification has been proposed and applied to a four-valve port injection spark ignition engine. In this engine, two different fuels or fuel components are admitted through two separate inlet ports and stratified into two regions laterally by strong tumble flows. Each stratified region has a spark plug to control the ignition. This engine can operate in the stratified lean-burn mode at part loads when fuel is supplied only to one of the inlet ports. While at high load operation, an improved fuel economy and higher power output are also expected through increased anti-knock features by taking advantage of the superior characteristics of different fuel or fuel components. This is achieved by igniting the lower RON (research octane number) fuel first and leaving the higher RON fuel in the end gas region. In this paper, knock limits of homogenous and different fuel stratification combustion modes at high loads were investigated experimentally. Primary reference fuels (PRF), iso-octane and n-heptane, were used to simulate three fuels of different RON: RON90, RON95 and RON100. The research results show that with stratified fuel components of low and high octane numbers, the knock limit, as defined by the minimum spark advance for knocking combustion, was extended apparently when the lower RON fuel was ignited first. In addition, the knock limit could also be extended by increasing the amount of higher RON fuel. However, igniting first the lower RON fuel in the fuel stratification combustion mode produced little improvement in anti-knock behaviour over the homogeneous combustion of the mixture of those two stratified fuels with an average RON.     

药用胶塞结构与模具设计研究

药用胶塞属于特种橡胶制品亦属于药用包装材料,它的最大特点是市场需求量巨大,要求特殊,国内各类胶塞年总生产量在500-600亿只,本文通过对胶塞结构介绍,探讨了关于胶塞模具设计及应注意的问题,介绍了胶塞模具的结构。