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1.
通过对退火妒的改造,特别是台车的整体结构改造,既节约了能源,也保证了生产的正常进行。  相似文献   

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本文针对初轧分厂原三号退火炉设备老化,炉子结构不合理,热效率低,不能适应当前生产的情况,对炉子进行了全面的分析,并详细讨论了改造方案及实施要点。改造后的退火炉具有升温速度快,炉温的均匀,能耗低,退火质量高等特点,并且实现了烧钢过程的自动化控制。  相似文献   

3.
邵国龙 《冶金能源》1996,15(6):26-28
介绍了锡钢集团公司锻压分厂车底式热处理退火炉消烟除尘综合治理改造情况。包括烧嘴重新选型、配置,增设空气预热器及重油加热系统,并将下排烟改为地上排烟。改造的主要目的是消烟除尘,提高产品退火质量,提高炉子装备水平及节省燃油消耗。改造后运行结果基本达到了预定目标。  相似文献   

4.
朱瑞恒  戴兰生  王迎春 《工业炉》2004,26(5):45-47,50
对球墨铸管退火炉加热段改造,采用平焰烧嘴和两区控温,降低了炉膛高度并采用耐火纤维模块替代浇注料,使温度调节灵活,提高了产品质量和降低能耗。  相似文献   

5.
本文介绍江西新余钢铁总厂煤气罩式退火炉改造的技术措施及取得的效果  相似文献   

6.
为解决炉体易接地问题,采用高质量的电瓷挂件、并对炉体结构加以改造,改造后炉体从未发生接地故障、减少了检修次数、节约了费用,提高了效率。  相似文献   

7.
针对安钢60m×7.5m蓄热式退火炉设计不合理和生产中暴露出来的不足之处进行了一系列优化改造,取得了较好的效果。  相似文献   

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赵洪宾 《冶金能源》1989,8(1):30-33
作者根据近年来国内外车底式退火炉的发展趋势,把凌源钢铁公司冷轧带钢厂六座小型手工烧煤单车底式退火炉,改造成为一座烧热脏发生炉煤气的两端进出料的双车底式退火炉,本文为该炉改造的技术总结,既包括了设计方案的选择、主要技术改造措施也包括了近一年的生产效果的分析。生产实践表明,炉子改造是成功的,表现在提高了产品的产量和质量,降低了消耗等方面。  相似文献   

10.
《工业炉》2021,43(5)
介绍了连续热镀锌机组退火炉的工艺流程和性能特点,通过对国内某厂立式退火炉的加热方式由电加热变为燃气加热的改造,得出结论是燃气加热退火炉比电加热退火炉经济效益明显提高,有很好的推广应用前景。  相似文献   

11.
转炉炉壳热应力分析   总被引:5,自引:1,他引:4  
任学平  郭志强  邹家祥 《炼钢》2001,17(6):47-49
根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。  相似文献   

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通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。  相似文献   

14.
Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.  相似文献   

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Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

17.
The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.  相似文献   

18.
Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.  相似文献   

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