Results 11 to 20 of about 1,865 (93)

电瓷凝胶注模成型的研究

open access: yesDianci bileiqi, 2003
以丙烯酰胺为单体,硝酸铈铵为引发剂,N,N,N’,N’-四甲基乙二胺为催化剂、N,N’-亚甲基双丙烯酰胺为交联剂,研究了电瓷坯体的凝胶注模成型工艺,并探讨了不同工艺条件对料浆原位凝固成型的影响规律以及成型的电瓷坯体的烧成性能和显微结构。
曹丽云   +4 more
doaj  

铝型材废水的处理工艺

open access: yesGongye shui chuli, 2008
在铝型材的表面处理中产生大量的酸碱废液,如不能有效地处理回收,将造成严重的环境污染和资源浪费。介绍了调节—中和混凝—过滤工艺处理铝型材生产废水工艺,处理后的废水达到生产工业用水标准,且工艺流程简单、投资少。讨论了废水处理工艺主要影响因素并提出了较佳的工艺控制参数。
刘宏, 向寓华, 刘碧雄
doaj   +2 more sources

电瓷工艺装备设计分析与研究(九)

open access: yesDianci bileiqi, 1994
电瓷工艺装备设计分析与研究(九)鲁延宾(西安电瓷研究所西安710077)第九章氧化锌电阻片粉末冷压成型模具设计分析与研究氧化锌避雷器的电阻片采用粉末冷压成型,在电瓷制造工艺中称为干压成型,其模具称为干压模。粉末冷压成型是电阻片制造中不可缺少的基本工序...
鲁延宾
doaj  

电瓷制图(五)

open access: yesDianci bileiqi, 1989
第四章电瓷工艺装备图(Ⅲ)§4.3 第一次成型的工艺装备图(Ⅱ)4.冲孔模图与打孔刀图(1)概述①适用范围在第一次成型时,人们将遇到那些具有盲孔或变径孔的制品,而这些孔往往既较深又比较复杂,如户内支柱的主内孔(盲孔)以及变压器套管之类的具有带水平台大小直径的内孔(变径孔)等.显然要制造这些较特殊的孔需要专门有一些特殊的工艺方法,这就是我们要讨论的冲孔与打孔工艺.由于具有特殊性,要专门对待,至今已发展成比较系统和完善的工艺方法,其所采用的工艺装备也自成体系.
陈相如
doaj  

UOE焊管扩径工艺有限元仿真研究

open access: yesShiyou jixie, 2014
椭圆度和梨型凸度是UOE焊管产品的重要成型指标,这些质量缺陷直接影响管道的对接与铺设,有时还会产生安全隐患。建立了UOE成型三维有限元模型,采用能够描述包辛格效应的混合硬化模型,模拟板材各工序的变形历程,最终得到UOE焊管的成型质量,并且将仿真结果与实际测量值进行对比,验证了所建三维模型的正确性。在此仿真模型基础上,对扩径工艺进行深入仿真研究,以椭圆度为主的多项指标考察各项工艺参数对管坯质量的影响规律。该项研究结果可以为UOE焊管扩径工艺的制定提供一定的参考。
纪宗辰   +8 more
doaj  

CAD与创成式CAPP的接口——零件的描述与识别

open access: yesDianci bileiqi, 1993
讨论了用于工艺设计自动化的CAD接口问题.采用内部边界描述法的CAD模型用来对零件作出判别,并从几何上找出提取零件信息的依据,为工艺设计系统提供信息.本文所考虑的问题有加工材料的确定、加工面的识别、将加工面组成型面、进刀方向以及加工顺序的研究,还提供了用于识别零件型面的图解法,然后为了完成工艺设计又对型面进行深入的研究,讨论了各种型面,并给出南京电瓷总厂互感器中金属附件的3-DCAD(三维CAD)零件特征编码技术.
邵遵义
doaj  

SBR工艺研究进展

open access: yesGongye shui chuli, 2005
近年来,间歇式活性污泥法由于其工艺简单、运行灵活、基建和运行费用低,已成为国内外竞相研究和开发的热门污水生物处理工艺。在阐述了SBR反应器的工艺特点及计算的基础上,对近年来其主要的变形工艺(ICEAS,CAST,IDEA,DAT-IAT,UNITANK等)和其他新型SBR工艺的发展进行了综述。同时指出随着对该工艺的研究和开发,它必将成为一种很有竞争力的污水处理工艺,拥有良好的发展前景。
程晓如, 魏娜
doaj   +2 more sources

对大型瓷套成型工艺与大型真空练泥机选型问题初步设想 附视频

open access: yesDianci bileiqi, 1976
用什么样的方法制造330千伏级以上大型瓷套,这是关系到电瓷制造工艺水平的一个大问题。本文比较了几种大型瓷套的生产工艺,提出了3.5米以下瓷套整体挤制仿形修坯;3.5米以上、5~8米的特高大瓷套用分段整体成型,烧成单节瓷套后用高温釉粘接,在蒸笼窑二次烧成整体瓷套的设想。而整体挤制大型瓷套的关键设备是大型真空练泥机。本文提出了采用φ1000毫米大型真空练泥机的论据。比较分析了大型立式和卧式真空练泥机对提高大型瓷套的产品质量,提高制造工艺水平,主机附机的设备结构,现有厂房高度与占地面积 ...
doaj  

220千伏锥形套管整体一次成型新工艺装备介绍

open access: yesDianci bileiqi, 1977
220千伏锥形套管用接坯法成型,合格率很低,且劳动强度大。礼陵电瓷厂成功地采用了整体一次成型新工艺,光坯和烧后合格率均高,减去了接坯的劳动强度,提高了工效。文中介绍了整体一次成型用的内外仿形修坯机及其操作工艺等。
doaj  

NB140高铝瓷柱塞研制

open access: yesDianci bileiqi, 1988
介绍了高铝瓷柱塞材料配方、制造工艺及产品性能。该研制工作采用优质95%Al2O3配方及等静压成型工艺,获得了瓷质性能稳定、质量可靠、运行性能良好的产品。其配方和工艺对于制造各类大型高铝瓷制品具有普遍意义。
江崇经
doaj  

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