冷轧退火炉控制系统的研究与应用

罩式退火炉主要用于冷轧钢卷的再结晶退火及光亮退火。本文介绍了莱钢冷轧HPH罩式退火炉的工艺流程过程、控制系统配置和退火过程控制功能,重点讲述了自适应退火模型的实现过程。生产应用表明,整个生产过程安全、稳定、可靠,具有良好的推广使用价值。     

浅谈全氢燃气罩式退火炉的温度控制

全氢燃气罩式退火炉是冷轧带钢退火的一种主要设备,它对提高产品质量起着十分重要的作用。由于其使用易爆的氢气作为保护气,因此对控制系统的要求是安全、可靠。自控系统是退火工艺的核心,而自控系统主要是靠压力和温度控制,下面就谈谈唐山建龙冷轧厂全氢燃气罩式退火炉是如何进行温度控制的。     

加热罩烧嘴常见的故障原因分析及处理流程

加热罩是热处理工序中重要的核心设备,其加热能力的大小与烧嘴工作的稳定性有着密切的联系。柳钢全氢罩式退火炉加热罩烧嘴故障形式,主要表现为烧嘴不能正常点火,烧嘴处于熄灭状态;烧嘴能点火,但持续时间不长,然后熄灭;烧嘴能正常点火,但燃烧状况较差,加热能力降低,控制温度难以跟上系统设定温度。文章通过分析总结及跟踪处理,得出了烧嘴常见故障的快速诊断方案和处理流程,极大地提高了烧嘴燃烧的稳定性。     

浅议燃气退火炉在我国铝板带行业的应用

燃气退火炉是近年来在电阻加热式退火炉基础上新研发的新型退火炉，具有节能、高效和质量稳定等特点，在铝板带行业拥有客观的应用前景。文章从燃气退火炉的组成、在国内外的应用及应用前景的分析等几个方面阐述了燃气退火炉在我国铝板带行业的应用，为铝板带生产企业在改扩建或新建项目时为退火炉的选择提供了参考依据。     

单交叉限幅控制在邯钢连续退火炉上的应用

正邯钢2080 mm连退机组的连续退火炉是由比利时DREVER公司设计的立式退火炉,其加热部分共分为3个加热段和一个均热段,共计14个区域,安装有378根W型辐射管,采用鼓抽式燃烧控制方式,对带钢进行全辐射加热。整个连续退火炉的控制中,以加热段控制最为关键,其控制效果好坏直接影响到产品产量、产品性能和能源消耗等。一、加热区域温度控制邯钢2080 mm连续退火炉加热区域采用辐射管中燃烧     

江苏泰盛炉业制造有限公司

江苏泰盛炉业制造有限公司（原泰兴市机械制造有限公司）是设计和生产强对流钟罩式光亮退火炉成套设备及其保护气设备的专业厂家，产品广泛应用于有色、冶金行业。公司技术力最雄厚、加工设备齐全、并具有完善的检测设备，已通过ISO9001：2000质量体系认证。     

东南大学 我国荫罩式等离子显示屏技术获得重大创新和突破

由东南大学承担的“34英寸全彩色萌罩式PDP(等离子显示屏)研制”课题成果,已正式通过国家“863”计划新材料技术领域办公室的验收和鉴定。这标志着我国荫罩式PDP技术获得重大创新和突破,国内消费者不日将购买到价廉物美、并且具有完全自主知识     

河钢邯钢邯宝冷轧厂连续退火炉安全控制优化和改进

为确保河钢邯钢邯宝冷轧厂1号连续退火炉长周期安全稳定运行,河钢邯钢邯宝冷轧厂连退车间针对退火炉存在的安全隐患进行技术攻关,通过对煤气压力、烟气管道压力、氢气分布等系统进行优化和修改,大大地提高了连退炉稳定运行的安全系数。     

一种单向穿孔定位夹紧装置在车身制造中的应用

文章通过深入分析车身前轮罩专用焊接夹具的技术状态,结合具体的汽车车身焊接夹具设计,介绍运用商用UG软件设计一种双四连杆式单向穿孔定位夹紧装置的实用方法。     

连续退火炉节能减排降耗的控制措施

我国的连续退火炉建设还处在初级阶段，为了能够更好地促进这一技术的可持续发展，业内人士一直在探索影响连续退火炉能耗的主要因素，并不断致力于钻研提高产品质量和生产效率、减排降耗的各种方法。通过不懈的努力，终于探索出连续退火炉从设计、生产到投入使用、保养、维修等各个环节中息息相关的联系，从而得出了一些有效控制能耗、减排环保的基本措施。     

技术跨越的两个基本模式

自主-技术跨越是指跨越主体基于自身的技术积累与技术创新能力,实现技术跨越。它不仅可以改变市场需求,改变市场竞争力量的对比,还有可能改写和塑造新的行业标准,创建新的“技术-经济的游戏”规则,从而占据技术与市场的主导权。自主跨越的显著优点是率先性,技术与市场开发上具有主动性。其主要风险是技术与市场的难以判定性。引进跨越是指技术跨越主体通过有选择、有步骤地引进技术,并通过反求工程而在消化-吸收之后,在引进技术的基础上实施更高层次的技术创新,而实现的技术跨越。从产业看,自主技术跨越比较适宜新兴技术产业,引进跨越模式更适合传统产业。     

面向中小企业的广西引进创新科技服务平台建设基本思路

构建一个引进创新科技服务的工作平台,对广西广大中小企业更好地利用国际、国内科技资源,加强与国内外的科技交流,拓展合作渠道,加大引进技术、人才和资金力度,推动引进消化吸收再创新,提高广西引进创新科技服务能力,具有十分重要的意义。     

面向中小企业的广西引进创新科技服务平台建设基本思路

构建一个引进创新科技服务的工作平台,对广西广大中小企业更好地利用国际、国内科技资源,加强与国内外的科技交流,拓展合作渠道,加大引进技术、人才和资金力度,推动引进消化吸收再创新,提高广西引进创新科技服务能力,具有十分重要的意义。     

Introduction of New Technology with a Sound Transition of the Input-Output Structure

We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.     

Efficiency and Technological Change in the U.S. Brewing Industry

This study demonstrates that the measurement of technological change and economic efficiency are tightly linked. Efficiency measures may depend on carefully controlling for technological change, while tests of technological change may be sensitive to empirical model specifications. Moreover, the study underlines Solow's (1994) and Romer's (1994) admonition that econometricians should pay attention to industry and institutional evidence in building models of technological change. The empirical results presented here suggest that there has been substantial technological change in the U.S. brewing industry from 1950 to 1992. This occurred in the form of a dramatic shift in technology beginning with the introduction of super breweries in about 1972. There has also been a substantial increase in scale economies, which undoubtedly caused many inefficiently small firms to exit the industry during the 1960s and 1970s. Further results suggest that a more complete specification of technological change and the stochastic nature of the frontier production function leads to higher and more tenable estimates of efficiency.     

植筋技术发展及应用

植筋技术作为目前工程界较为常用的加固改造方法之一，有其独特的技术特点和广泛的应用范围。文章简要介绍了植筋技术的基本概念和技术特点，并对植筋技术的应用范围和应用特点进行了介绍与分析，最后指出植筋技术还需做进一步的研究和完善。     

Product design strategies in technological shifts: An explorative study of Italian design-driven companies

This article analyzes the relationship between technological shift and product design strategies in the Italian lighting industry, where design players have experienced a discontinuous technological shift due to the introduction of LED (Light Emitting Diode) technology.     

Schumpeter and new technology based firms: Towards a framework for how NTBFs cause creative destruction

Although Schumpeter’s “creative destruction” has become something of a buzzword, the theoretical underpinnings of his theory are largely missing from the recent literature on technological change. This paper explores the link between technological change and creative destruction, with particular attention being paid to the role of new technology-based firms in bringing this about. Recurring themes in the technological change literature are examined. These show that the phenomenon of dominant firms failing due to the introduction of a new (disruptive) technology is creative destruction in action. NTBFs are the most common introducers of disruptive technologies and a leading driver of creative destruction.     

Dynamically evaluating the comprehensive efficiency of technological innovation and low-carbon economy in China's industrial sectors

Technological innovation and low-carbon economy are significant for the high-quality development of China's industrial sectors. However, few scholars combine the two stages closely and discuss their coordinated development. This paper establishes an evaluation index system of technological innovation and low-carbon economy in China's industrial sectors. The technological innovation efficiency, low-carbon economy efficiency, and comprehensive efficiency of technological innovation and low-carbon economy are dynamically investigated by the two-stage data envelopment analysis (DEA) model and the DEA window analysis with 35 subsectors panel data during 1996–2018. The inter-industrial differences in the technological innovation efficiency and low-carbon economy efficiency are considered, and the influencing factors of the comprehensive efficiency of technological innovation and low-carbon economy are studied by the bootstrap truncation regression. The results show that: (1) The development of the technological innovation and low-carbon economy is uncoordinated, and the low-carbon economy efficiency needs improvement; (2) There is heterogeneous of the technological innovation efficiency and low-carbon economy efficiency in the 35 subsectors; (3) The density of science and technology institutions, and the average enterprises scale are positive to the comprehensive efficiency of technological innovation and low-carbon economy, while excessive reliance on technology introduction has a negative impaction. The corresponding suggestions are provided for promoting technological innovation efficiency and low-carbon economy efficiency of industrial sectors.     

滚筒式烘丝机工艺参数与烘后叶丝质量的关系

对滚筒式烘丝机不同工艺参数对烘后叶丝的感官质量及物理质量的影响进行相关试验,结果表明：烘丝机筒壁温度对烘后叶丝物理质量及感官质量影响较大,过低或过高的排潮开度对烘后叶丝物理质量及感官质量影响较大,烘丝工艺流量对烘后叶丝物理质量及感官质量影响较小。试验结果对优化滚筒式烘丝机的工艺参数提供了依据。