数控生产线实现更高效率的方法

本文以Y4102型柴油机体为例，讲解了如何通过合理确定零件的加工工艺流程、优化数控程序的编制，来实现数控生产线的更高效加工。     

无锡新协祥公司拟实施搬迁

1．1．8×16m钢丝绳芯输送带生产线成功投产 11月13日，青岛华夏橡胶工业有限公司新建1．8×16m钢丝绳芯输送带全自动数控生产线成功投入使用。该生产线吸收中外钢丝绳芯输送带生产装备精华，自行设计完成，具有自主知识产权，设计年产能达300万平方米，提高了生产装备自动化水平和输送带生产效率。     

环保全数控瓦楞辊电镀生产线投产

常州市武进海力制辊有限公司投入600多万元量身定制的国内首条环保型全数控大电流瓦楞辊滚镀生产线已正式使用，在经过数月运行后，取得了预期效果，大大延长了瓦楞辊使用寿命，客户十分满意。     

国内首条卧式大口径双壁波纹管生产线现场演示成功

2003年11月,在大连高新园区三垒塑料机械工程有限公司第三届新产品展示会上,三垒公司演示了他们生产的国内首条卧式PE大口径双壁波纹管生产线及首条卧式PVC大口径双壁波纹管生产线。有关部门在现场对产品进行了鉴定。PE生产线以其独特的卧式结构、梭式传动、数控控制、密闭水冷     

欢迎订阅2007年《玻璃纤维》（双月刊）

近日，由中材高新材料股份有限公司研制生产的高压电瓷产品，得到了国网武汉高压研究院、中国电力科学研究院、西安电瓷研究所等有关专家的认可，市场反馈良好。公司于2005年投资2800万元建成了国内先进的等静压成型高压电瓷生产线，可年产126-1100kV棒形支柱绝缘子5000支。该生产线采用粒度分析、数控修坯、全自动烧成等先进陶瓷的生产方式，产品具有强度分散性小，尺寸精度高，形位公差好，机械强度高的特点。目前其产品材料强度可达到200MPa，达到国内领先水平。     

大连三垒领跑中国双壁波纹管制造装备业

日前,大连三垒机：器股份有限公司发布首发招股说明书。大连三垒主营塑料管道成套制造装备的研发、设计、生产与销售,主要产品包括PE／PP管自动化生产线、PVC管自动化生产线、数控单机及精密模具等,目前公司已发展成为国内规模最大、品种系列最为齐全、生产工艺行业领先的双壁波纹管制造装备供应商之一。     

在注塑行业中扬起个性的风帆

华大机械设备有限公司（大同机械有限公司前身）自1982年进入橡塑机械设备市场以来，在秉承香港注塑机技术的同时，又通过多种战略联盟的方式大量吸收了欧洲、日本的注塑技术，使之拥有了东华、华大、格兰及格兰一UBE这些著名的注塑机品牌。此外，大同机械还拥有高端的DEKUMA中空成型机、挤出生产线、橡胶成型机、COSMOS油压机、数控冲床等钣金设备。     

浅析高职数控专业办学模式

分析了数控技术人才的需求状况，结合我国的国情及数控专业特点，指出了高职数控专业培养目标，并提出了具体的数控人才培养模式的办学和教改的基本思路。     

德马吉新品闪耀2007CIMT 辉煌业绩再显强大实力

2007CIMT，德马吉公司凭借强大的品牌实力，申请到了一号馆420平方米的展出面积，推出了涵盖数控万能车床、数控万能铣床、立式加工中心和超声振动加工、激光加工等领域的共13款产品。其中包括数控万能车床CTX 310eco，生产型车铣复合加工中心GMX 250 linear，数控纵切自动车床SPEED 20-11 linear，立式加工中心DMC 635与DMC 64V linear，数控万能铣床DMU70、DMC60 monoBLOCK，     

瑞士GF阿奇夏米尔集团“同一品牌同一承诺”

瑞士阿奇（AGIE），夏米尔（CHARMILLES）及米克朗（MIKRON）为瑞士三大历史悠久的世界品牌，其主要生产精密数控电火花成型机床，精密数控慢走丝线切割机及精密数控高速加工中心。     

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.     

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…     

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。     

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。