共查询到20条相似文献,搜索用时 46 毫秒
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《信息技术与标准化》2000,(3)
阐述了制造过程质量控制的“质”和“量”、质和量的适度控制概念 ;探讨了企业进行质量控制的方略 ;强调指出对于任何企业 ,质量控制活动都不能无视控制利润 ,即经济性。 相似文献
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文章简单介绍影响校准件质量的因素,重点阐述如何在校准件的生产过程中实施必要的质量控制与管理,以保证其质量水平. 相似文献
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结合实际阐述了企业推行ISO9000活动中不同阶级应有所侧重,并将实行持续质量改进作为实现质量体系运行有效性的核心。 相似文献
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机械自动化技术的发展,为工业生产提供了更多的技术支持和技术保障,在不断提升生产效率,增强产品质量的同时,产品质量的隐患仍然存在,一旦发生问题,损失将更加严重,因此质量控制的任务更加严峻。基于此,本文就针对机械自动化技术在生产制造过程中质量控制的因素进行了分析,并对其进行了讨论。 相似文献
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Mitsuhiro Kimura Shigeru Yamada Hiroaki Tanaka Tohru Nagaike Shunji Osaki 《Microelectronics Reliability》1995,35(4)
It is of great importance to assess an initial production process prior to the regular mass-production. For this purpose, many statistical methods have been proposed for practical use. In this paper, we propose two stochastic models for an assessment method of the initial production process control: a Markov process model and a Markov approximation model. These models are continuous state space models and formulated by applying mathematical techniques of stochastic differential equations. Based on each model, we derive several quantitative assessment measures for initial production process control. 相似文献
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A graphical tool for inventory and production control, currently in use at a major US semiconductor manufacturer, is presented. The tool supports a bottleneck starvation avoidance policy. Equations for calculating the bottleneck in a clean room manufacturing environment are presented. A new constraint which must be satisfied to ensure starvation avoidance is introduced. A technique for helping a manual decision process conform to this constraint is presented. Many graphs are given to illustrate the concepts 相似文献
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基于对化工生产过程参数的精确控制的目的,采用建立机理动态数学模型的方法,该控制方法不仅能给出过程稳态特性的设计,同时能给出过程动态特性的设计,必将使设计工作进入到一个新的更高的水平.通过水位、温度控制系统的试验,得出使用该方法参数控制精度可提高20%以上的结论. 相似文献
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《Microelectronic Engineering》1999,45(2-3):247-256
Semiconductor industry is one of the fastest growing businesses. Integrated circuit production process is becoming more and more challenging as the increase in complexity and in wafer size continues. Semiconductor manufacturing comprises hundreds of mostly complex processing steps, almost each of them has to be controlled within a narrow process window. Measurement steps are more or less frequently used in the production processing. Quite often it is required to take those wafers that have to be tested or measured out of the production lots, which affects logistics and, even worse, adds costs for such monitor wafers. It is of utmost importance to check new strategies in monitoring for the enhancement of yield at any possible level. Three practical examples for integrated metrology, X-ray-induced photoelectron spectroscopy and ellipsometry integrated into a cluster tool and ellipsometry integrated into a vertical furnace have been demonstrated and will be described. Considerations of cost savings by integrated metrology are made concerning increase in equipment availability, yield improvement and reduction in cleanroom space. 相似文献
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在越来越追求高效率、低制造成本的今天,各行各业都在研究各种先进工艺以提高生产效率并获取更大的利润。本文就数控加工过程中对刀具的合理使用为研究课题,从切削原理、刀具研磨、过程控制、实验论证等几方面进行简单剖析,希望能达到与业界同仁学用互进的目的与效果! 相似文献
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炼铁高炉是钢铁冶炼生产中极其重要的一部分,随着当下生产量和生产要求标准的提高,也必须不断提高炼铁高炉的生产效率和生产稳定性,做好对炼铁高炉生产中的自动化建设和自动化控制,不断提高高炉生产的自动化水平和智能化水平。 相似文献
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身为PCB制造产业里的一员,多年来深切的感受到了PCB制造利润空间的压缩和成本控制的压力。关于PCB的成本问题,从来也是从业者一直在深度探讨,却鲜有固定的范本可供复制,虽然保密是关键原因,但由于PCB的流程长长,产品种类多多,确实难以以一概全。什么样的系统以及什么样的成本运作方案,可以让管理者对每一个产品的理论成本和实际产生成本可以一目了然,做到实时的成本查询而不是事后财务均摊成本呢?本文将从如何实现成本实时体现着手,借用Oracle ERP(enterpriseresource plan)的BOM(Bill of material)模块,讨论一种可行性的方法。 相似文献