共查询到20条相似文献,搜索用时 800 毫秒
1.
金属制品通常是指普通碳素钢丝、优质碳素钢丝、合金钢丝、预应力钢丝和钢绞线及各种钢丝绳,它们都是用热轧盘条经过拉拔而制成的,它是属于冶金工业中的深度加工产品,也是国家提倡发展的高效钢材之一。我省生产金属制品的企业有几十家,目前总生产能力在十万吨以上,其中钢丝绳约 相似文献
2.
为了规范金属材料成分分析用直读光谱仪校准结果确认工作,落实《检验检测机构资质认定能力评价检验检测机构通用要求》(RB/T 214-2017)和《检测和校准实验室能力认可准则》(CNAS-CL01:2018)的相关要求,通过对《发射光谱仪检定规程》(JJ G768-2005)直读光谱仪检定规程及计量机构出具的校准报告的判读,结合实验室中关于《碳素钢和中低合金钢多元素含量的测定火花放电原子发射》(GB/T 4336-2016)标准方法的要求,制定了金属材料分析用直读光谱仪校准结果确认报告。 相似文献
3.
4.
5.
6.
含铝碳素钢的淬火敏感性预测据《SteelTimes》1995,No.5报道,在标准范围内,提高钢中的铝和氮含量导致钢的淬透性降低,这是由于这些元素的存在细化了钢的奥氏体晶粒的缘故。一项由钢铁工业部与热处理协会联合发布的报道已提到在进行由含铝碳素钢(和... 相似文献
7.
8.
本文介绍了转炉连铸生产线开发F18,F11复铜用优质碳素钢扁钢的工艺、相关技术及质量状况;指明工艺控制重点在于脱氧合金化和钢中酸溶铝的控制。 相似文献
9.
10.
董莉 《冶金标准化与质量》2014,(4):24-27
介绍了国家标准《核电站用非核级碳钢及合金钢焊接钢管》制定过程和标准中主要技术指标的确定依据,分析了我国核电站用钢管标准体系和产品国内外应用情况。提出了标准实施建议。 相似文献
11.
12.
13.
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.
K Ohta M Nishi M Ueda S Ohyama T Matsubara T Takahashi T Nakajima 《Canadian Metallurgical Quarterly》1998,99(9):589-594
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
15.
16.
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.
TA Solokhina LS Shevchenko IuV Se?ku EG Rytik LV Besedina TS Veshchugina 《Canadian Metallurgical Quarterly》1998,98(6):42-46
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
19.