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1.
吕云山  才子奇 《山西冶金》2000,(1):38-40,50
就一种较好的拉剪式圆盘剪结构做了简要介绍和分析,重点分析了圆盘剪剪间隙调整机构、刀轴结构及开口度调整机构,并提出提高设备精度和刚度、保证设备性能的措施。同时阐明了带钢对中性是保证剪切机组能够连续剪切和运行的关键环节。较高的带钢对中性还可提高成材率。  相似文献   

2.
月牙开槽剪是带钢表面处理线上的一种剪切设备,集月牙剪和圆盘剪于一身,是一剪两用的新型设备。介绍了月牙开槽剪的功能和结构,带钢宽度变化时,无需停车,在线调整圆盘剪剪切位置,提高了产品的稳定性和生产率。  相似文献   

3.
孙林 《昆钢科技》2007,(1):18-21
本文结合昆钢板带厂剪切线带钢自动对中纠偏/对边控制系统(CPC/EPC)的工作原理,详述了在生产中出现带钢塔型公差、错层公差超标、圆盘剪脱边等问题时对设备所采取的调整处理方法。  相似文献   

4.
分析了酸洗冷轧联合轧机组中圆盘剪的结构,对圆盘剪咬入角、剪切力、剪切力矩、带钢后拉力产生的力矩进行了计算验证,介绍了圆盘剪侧隙、重叠量选择标准.介绍了无驱动型圆盘剪的工作原理和结构特点,并对冷轧圆盘剪侧隙和重叠量调整装置、机架旋转装置及自动调宽装置等进行了分析和设计.  相似文献   

5.
李涛 《冶金动力》2014,(8):88-90
介绍了马钢连续酸洗生产线圆盘剪的基本结构与控制原理。无动力回转式圆盘剪位于月牙剪后用于按设定的宽度对带钢边部剪切。对圆盘剪的控制主要是根据带钢宽度和工艺要求完成距离调整。此过程控制系统已在马钢酸洗生产线取得了成功的应用。  相似文献   

6.
安钢炉卷轧机生产线圆盘剪设备改造   总被引:1,自引:0,他引:1  
对影响圆盘剪剪切的因素进行了分析,提出了改造溜槽结构和加大溜槽与剪箱的连接强度、变更人口支撑梁结构和安装方式、改造碎边分料槽结构、调整磁力对中设备电磁铁标高、优化碎边剪箱体结构等具体措施,解决了圆盘剪卡钢、跑偏、溜槽断裂、碎边剪刀盘断裂、分料槽堵钢等问题,保证了圆盘剪正常剪切。  相似文献   

7.
结合工程设计,对带钢的剪切原理和带钢的剪切过程进行了分析,计算了上切式剪切和下切式剪切的剪切力,介绍了双层剪的侧隙调整机构,分析了剪刃侧隙调整机构及剪刃的侧隙对带钢剪切质量的影响。双层剪的设计和参数的选择提供了参考依据。  相似文献   

8.
在精整机组剪切区域中,为了获得高质量的带钢边部,通常会应用圆盘剪和碎断剪组合机构来进行边部剪切及废边处理。不同的圆盘剪与碎断剪组合机构设计选型工作,可以通过对工作原理、应用局限性、制造经济性及自动化程度等方面对比和分析来实现,从而最大程度满足客户对废边处理方式的不同要求。文中通过对不同组合机构的整体结构分析,阐述了不同装置在实际应用中的性能优势特点及局限性:圆盘剪、碎断剪一体式机构结构紧凑,占地空间小,适用于产线速度低、厚度大或强度高的废边处理工况;圆盘剪、碎断剪分体式机构占地空间大、制造成本高,可以选择废边卷球或废边碎断的处理方式;圆盘剪、碎断剪、废边转向辊一体式机构结构紧凑、制造成本低,可以选择废边卷球或废边碎断的处理方式。  相似文献   

9.
正1前言酸轧生产线圆盘剪主要功能是剪切带钢边部的不规则毛边,使带钢达到一定的宽度精度,在外型上满足用户的需求。冷轧板带厂1550连续酸轧机组圆盘剪切边生产过程中,由于废料飞边、圆盘剪间隙调整不当、刀片和胶环更换  相似文献   

10.
白振华  林威  王伟  张文军  李学通 《钢铁》2022,57(1):159-166
热镀锌机组圆盘剪工作时,由于剪切工艺参数设定不当等原因造成圆盘剪设备的故障以及带钢边部出现有扣边、毛刺和切断比失衡等主要切边质量问题,以某钢厂热镀锌机组圆盘剪设备为研究对象,对其设备本身和工艺参数展开研究.通过对影响带钢边部质量缺陷因素的分析,以及BP神经网络输入变量相关性要求选择前张力、间隙量、重叠量、切边量4个因素...  相似文献   

11.
介绍了电能表的三个调节装置及三个调节装置间的影响量 ,一次性调整法 ,就是将三个调节装置按估算所得分别调到其最佳位置 ,可使调整一次完成。  相似文献   

12.
对工程概算调整的一些思考   总被引:1,自引:0,他引:1  
对调整概算的原因、重点和途径进行了探讨和分析研究,以期达到准确编制工程概算、合理调整概算的目的。  相似文献   

13.
"A representative sample of the resident population of adults in the United States was interviewed about their feelings of distress in different life areas: perceptions of the self; symptoms of distress; adjustment in marriage parenthood, and work." Factor analysis of these data revealed the presence of 5 separate dimensions through which distress may be expressed: anxiety, unhappiness, sense of social inadequacy, lack of identity, and physical ill health. Men and women were distinguished by distress being expressed through physical ill health for men, psychological symptoms for women. The study indicates that psychological adjustment is multi-rather than unidimensional. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

14.
东涛 《河南冶金》2002,(4):3-5,9
本文从我国国情出发,主张把发展微合金化钢作为钢材品种结构调整的重要内容。并概述了我国目前微合金化技术的差距和近期发展方向,提出了地方骨干钢铁企业开发微合金化钢的技术要点。  相似文献   

15.
Using a prospective design spanning 17 years, the authors studied in a sample of 231 boys and girls the predictive links of verbal abuse by the teacher during childhood to high-school graduation and behavioral and emotional problems in young adulthood, as well as the putative mediating role of individuals' generalized and domain-specific self-concept in this context. Results show that verbal abuse by the teacher during childhood was positively related to behavior problems and (for girls) a low probability of having obtained a high school diploma by age 23 years, even when controlling for childhood levels of antisociality, anxiety, school performance, and social preference in the peer group. No conclusive evidence was found for a mediation effect of children's general or domain-specific self-concept, however. Theoretical and practical implications of these findings are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

16.
Five articles in a special section of Psychology of Addictive Behaviors (see records 2006-07521-001, 2006-07521-002, 2006-07521-003, 2006-07521-004, and 2006-07521-005) are briefly reviewed. With samples spanning an age range of 6 years to college age, the 5 articles examine potential mediators and moderators of psychological adjustment and drinking behavior. These articles illustrate the potential contributions of gender, personality traits, motivational factors, environmental characteristics, and parenting styles on the alcohol use, consequences, and emotional adjustment of children, adolescents, and emerging adults. Strengths and limitations of the different designs and methods are discussed in relation to the specific findings and the potential insights the special section provides. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

17.
For students (N = 250) in seven grade-school classes, the frequency of positive and negative sociometric choices was related to scores on the subtests of the California Test of Personality. Frequency of both positive and negative choices was dichotomized into "few" and "many," and the subtest scores were analyzed in a 2 X 2 factorial design created by the four possible combinations of choices. "Seven of the 12 subsections of the… test… produced evidence to indicate a relationship between one's social position among his peers and some aspect of personality adjustment as measured by this test." (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

18.
Antipathetic relationships, or relationships based on mutual dislike, have received less attention than other aspects of children’s peer relations. The present meta-analytic review summarizes the existing literature (26 studies consisting of over 23,000 children and adolescents) to illuminate the prevalence of antipathetic relationships and their associations with maladjustment. Results indicate that 35% of children have an antipathetic relationship and that antipathetic relationships are associated with externalizing and internalizing problems, low academic achievement, low prosocial behavior, victimization and rejection by peers, and lower positive peer regard (e.g., social preference) and friendships. Gender differences in antipathetic relationships are trivial, and antipathetic relationships are equally often same and mixed gender. Collectively, the findings indicate the importance of studying antipathetic relationships, and several directions for future research are described. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

19.
There is limited research on the links between grandparenting and adolescents' well-being, especially from the perspective of the adolescents. The study examined whether grandparent involvement varied in two-parent biological, lone-parent, and step-families and whether this had a different contribution to the emotional and behavioral adjustment of adolescents across different family structures. The study is based on a sample of 1,515 secondary school students (ages 11-16 years) from England and Wales who completed a structured questionnaire. Findings of hierarchical regression analyses showed that among the whole sample, greater grandparent involvement was associated with fewer emotional problems (p  相似文献   

20.
分析阐述了一点找正法计算原理及在S4500风机检修中的实用性,从而达到提高检修的质量与效率。  相似文献   

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