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全铝白车身机器人弧焊系统解决方案技术应用 被引量:2
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作者 胡建平 李海峰 +2 位作者 梁凯 孙成亮 张洋洋 《机器人技术与应用》 2021年第1期26-33,共8页
本文介绍一种通过智能控制实现全铝白车身自动弧焊系统解决方案。机器人焊接全铝白车身主要采用弧焊工艺,辅助点焊、铆接、胶结等工艺方法;采用挤压铝型材以及铝板冲压件,进一步降低原材料制造成本。
关键词 机器人 焊接 铝白车身 焊接
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环氧三聚磷酸铝白底漆的应用试验
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作者 姚永华 《华通技术》 2000年第4期15-17,共3页
介绍环氧三聚磷酸铝白底漆的性能和机理,经应用试验后,显示其有较好的适用性和配套性,达到产品要求的各项技术指标。
关键词 环氧三聚磷酸铝白底漆 防腐蚀性能 试验 防锈漆
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某铝制物流车白车身刚度灵敏度优化分析 被引量:2
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作者 杨珊 夏德伟 王雪飞 《铝加工》 CAS 2021年第6期56-60,共5页
以某铝制物流车白车身为研究对象,通过建立有限元模型对其初始方案进行弯曲刚度和扭转刚度分析。考虑到弯曲刚度(4564.70 N/mm)小于目标值(6000 N/mm),而扭转刚度(11384.06 N·m/deg)远大于目标值(8000 N·m/deg),仅针对弯曲刚... 以某铝制物流车白车身为研究对象,通过建立有限元模型对其初始方案进行弯曲刚度和扭转刚度分析。考虑到弯曲刚度(4564.70 N/mm)小于目标值(6000 N/mm),而扭转刚度(11384.06 N·m/deg)远大于目标值(8000 N·m/deg),仅针对弯曲刚度进行基于白车身料厚的灵敏度优化分析。设计变量为白车身料厚,约束条件为弯曲刚度不低于目标值,目标函数为白车身总质量最小,最后对优化方案进行扭转刚度校核。优化结果表明:车身质量减轻39.76 kg,同时弯曲刚度提升至目标值,提高31.52%,扭转刚度提高6.92%,基于弯曲刚度和扭转刚度的轻量化系数分别降低31.83%和16.14%。 展开更多
关键词 车身 轻量化 灵敏度 弯曲刚度 扭转刚度失效
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基于铝合金减振器塔的白车身模态分析与研究 被引量:5
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作者 唐程光 赵震 阚洪贵 《汽车实用技术》 2022年第2期57-60,共4页
为了确保白车身模态性能在设计阶段满足要求,在设计前期需要对白车身模态进行分析研究。论文首先利用有限元分析软件对搭载铝合金减振器塔的某钢铝混合白车身设计模型的模态进行仿真分析和摸底,再通过试验测试方法对实车的模态进行分析... 为了确保白车身模态性能在设计阶段满足要求,在设计前期需要对白车身模态进行分析研究。论文首先利用有限元分析软件对搭载铝合金减振器塔的某钢铝混合白车身设计模型的模态进行仿真分析和摸底,再通过试验测试方法对实车的模态进行分析确认,两种方法相辅相成,为后期的产品优化提供有效数据支撑。结果表明:有限元分析结果精度高(有限元分析结果与试验测试结果基本相当,误差在2%左右),有限元分析软件强大的模拟计算能力使大量繁琐的工程问题简单化,可以节省大量的开发时间和成本;同时再结合试验测试对有限元分析结果进行校核修正,两种方法相结合可以为汽车设计方案的设计和优化提供行之有效的解决方案。 展开更多
关键词 混合车身 模态 有限元分析 测试 分析与研究
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Mechanism of extracting magenesium from mixture of calcined magnesite and calcined dolomite by vacuum aluminothermic reduction 被引量:6
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作者 傅大学 王耀武 +3 位作者 彭建平 狄跃忠 陶绍虎 冯乃祥 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第8期2677-2686,共10页
The process of aluminothermic reduction of a mixture of calcined dolomite and calcined magnesite had been developed. The mechanism of the process was studied by SEM and EDS. The reduction process was divided into thre... The process of aluminothermic reduction of a mixture of calcined dolomite and calcined magnesite had been developed. The mechanism of the process was studied by SEM and EDS. The reduction process was divided into three stages:0≤ηt/ηf≤0.43±0.06, 0.43±0.06≤ηt/ηf≤0.9±0.02 and 0.9±0.02≤ηt/ηf<1, whereηt andηf are the reduction ratio at time t and the final reduction ratio obtained in the experiment at temperature T, respectively. The first stage included the direct reaction between calcined dolomite or calcined magnesite and Al with 12CaO·7Al2O3 and MgO·Al2O3 as products. The reaction rate depended on the chemical reaction. The CA phase was mainly produced in the second stage and the overall reaction rate was determined by both the diffusion of Ca2+ with molten Al and the chemical reaction. The CA2 phase was mainly produced in the third stage and the reaction process was controlled by the diffusion of Ca2+. 展开更多
关键词 magnesium aluminothermic reduction MAGNESITE DOLOMITE MECHANISM
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Kinetics of extracting magnesium from mixture of calcined magnesite and calcined dolomite by vacuum aluminothermic reduction 被引量:7
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作者 傅大学 冯乃祥 +2 位作者 王耀武 彭建平 狄跃忠 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第3期839-847,共9页
The vacuum aluminothermic reduction of the mixture of calcined magnesite and calcined dolomite was studied. An isothermal reduction method satisfying the vacuum aluminothermic reduction was proposed. The experiments w... The vacuum aluminothermic reduction of the mixture of calcined magnesite and calcined dolomite was studied. An isothermal reduction method satisfying the vacuum aluminothermic reduction was proposed. The experiments were carried out at 4 Pa. The results indicate that the reduction rate is increased with increasing temperature, content of aluminum and pellet forming pressure. The XRD patterns of pellets at different reduction stages confirm that the reduction process can be roughly classified into three stages:the formation of MgAl2O4, and Ca12Al14O33 phases;the phase transformation from MgAl2O4 and C12A7 to CaAl2O4;the formation of CaAl4O7 phase. The experimental data were divided into three parts according to the kinetic models. The apparent activation energies of the three parts were determined to be 98.2, 133.0 and 223.3 kJ/mol, respectively. 展开更多
关键词 Amagnesium KINETICS aluminothermic reduction MAGNESITE DOLOMITE
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Immunological Adjuvant Function of Aluminium Phosphate and Chicken IL-18 in NDV F Gene Vaccine
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作者 尹会方 黄青云 +2 位作者 王继文 何英杰 吴思源 《Agricultural Science & Technology》 CAS 2012年第12期2581-2584,2619,共5页
[Objective] This study aimed to investigate the immunological adjuvant function of aluminium phosphate and chicken IL-18 in NDV F gene vaccine. [Method] The vaccine (0.2 ml) containing aluminum phosphate adjuvant (... [Objective] This study aimed to investigate the immunological adjuvant function of aluminium phosphate and chicken IL-18 in NDV F gene vaccine. [Method] The vaccine (0.2 ml) containing aluminum phosphate adjuvant (90 μg), pcDNA/F (200μg), and pcDNA/chlL-18 (200 μg) was prepared. The 7 d old chick- ens to be tested were randomly divided into six groups (12 chickens in each group) and immunized through intramuscular injection with inactivated Newcastle disease vaccines, pcDNA/F+pcDNA/chlL-18+phosphate aluminum, pcDNA/F, pcDNA/F.+pcDNA/ chlL-18, pcDNA/F+aluminum phosphate, and physiological saline respectively; the secondary immunization was conducted with the same dose when the chickens were 21 d old. Their blood was sampled 0, 7, 14, 21, 28 d after first immunization. Anti- body titer was detected with ELISA and T cell transformation rate was measured with MIT. Experimental chicken will be challenged with 30 LD50 NDV virulence 28 d after first immunization. [Result] The survival rate of the chickens immunized with pcDNA/F+aluminium phosphate+pcDNA/chlL-18 achieved 8/12, higher than that of those immunized with pcDNA/F 4/12 and pcDNA/F+pcDNA/chlL-18 (6/12). The NDV antibody titer of the chickens immunized with pcDNA/F+ aluminum phosphate, pcD- NA/F+pcDNA/chlL-18 and pcDNA/F+pcDNA/chlL-18+aluminum phosphate is not differ- ent (P〉0.05), but significantly lower than that of the chickens immunized with tradi- tional vaccine (P〈0.05). The T cell transformation rate of the chickens immunized with pcDNA/F+pcDNA/chlL-18+aluminium phosphate was obviously higher than that of the chickens immunized with pcDNA/F (P〈0.05). The T cell transformation rates of chickens immunized with pcDNA/F and the traditional vaccine showed no signifi- cant difference (P〉0.05). [Conclusion] Combination of aluminium phosphate and pcD- NA/chlL-18 can significantly enhance the immune effect of NDV F gene vaccine. 展开更多
关键词 Immunological adjuvant: Aluminium phosphate Chicken IL-18 NDV F gene Gene vaccine
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防水油灰配制法
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作者 刘新刚 《农村新技术》 2005年第8期33-33,共1页
取铝白、二氧化锰、黏土各1份,混合研细,用适量亚麻仁油漆调成稠糊状即可。这种油灰耐水性强,用于填补贮水容器或房顶裂缝,效果远胜普通油灰,并经久耐用。
关键词 防水油灰 配制方法 铝白 二氧化锰 黏土
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Study on Removal of Naphthenic Acids from White Oil by[BMIM]Br-AlCl_3 被引量:2
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作者 Li Jing Sun Yu Shi Li (The State Key Laboratory of Chemical Engineering,East China University of Science and Technology, Shanghai 200237) 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2010年第4期46-51,共6页
The removal of acid compounds (naphthenates) from acidic oil with ionic liquids was systematically investigated. [BMIM]Br-AlCl3 was used to investigate the effect on deacidification of oil. Experimental results show... The removal of acid compounds (naphthenates) from acidic oil with ionic liquids was systematically investigated. [BMIM]Br-AlCl3 was used to investigate the effect on deacidification of oil. Experimental results showed that at a temperature of 323K with a molar ratio of AlCl3 to [BM1M]Br-AlCl3 of 0.2, and a mass ratio of IL to white oil of 4%, the deacidification rate could reach 75.9%. And a reaction time of 4 h was sufficient to achieve the goal. The study on reproducibility of catalytic performance of [BMIM]Br-AlCl3 showed the possibility of using the ionic liquid in the continuous catalytic reaction. 展开更多
关键词 naphthenic acid ionic liquid white oil DEACIDIFICATION
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Aluminum(Ⅲ)ion sensor based on the sensitive membrane containing nano.sizedAL2O3 powders
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作者 MA Chuan-li HE Li-jun, TIAN Li-fang WANG Chun-ming 《Journal of Chemistry and Chemical Engineering》 2008年第4期47-52,共6页
An AI^3+ sensor based on the membrane of acetyl cellulose containing nano γ-Al2O3 crystals was studied. In the buffer solution of 0.5 mol/L CH3COOH-CH3COONa (pH=5.0), the sensor responds to AI^3+ in a linear rang... An AI^3+ sensor based on the membrane of acetyl cellulose containing nano γ-Al2O3 crystals was studied. In the buffer solution of 0.5 mol/L CH3COOH-CH3COONa (pH=5.0), the sensor responds to AI^3+ in a linear range from 1.00×10^-5 to 1.00x10-^2 mol/L. A near-Nernstian response was obtained and the regression equation was E (mv) = -161.4-26.54 Ig [AI^3+] with a detection limit of 7.90x10^-6 mol/L. More than 14 different ions as the considered interferences were tested and the relevant selectivity coefficients were determined using the separate solution method (SSM). The sensor possesses many advantages including short conditioning time, fast response, and, especially, very good selectivity over a wide variety of other co-existing ions. The sample analysis on the aluminium migration amount from aluminium utensils to the solution was determined by this sensor. The analytical results were agreed with that of inductively coupled plasma-atomic emission spectroscopy(ICP-RES). 展开更多
关键词 sensor aluminum (Ⅲ) acetyl cellulose membrane nano γ-Al2O3
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Tetrahydroxy stilbene glucoside reduces the cognitive impairment and overexpression of amyloid precursor protein induced by aluminum exposure 被引量:5
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作者 罗红波 杨金升 +2 位作者 石向群 付学峰 杨期东 《Neuroscience Bulletin》 SCIE CAS CSCD 2009年第6期391-396,共6页
Objective Excessive aluminum (Al) exposure impairs neurocognitive function in humans and animals. Epidemiologic studies have shown a potential linkage between chronic Al exposure and Alzheimer’s disease. The presen... Objective Excessive aluminum (Al) exposure impairs neurocognitive function in humans and animals. Epidemiologic studies have shown a potential linkage between chronic Al exposure and Alzheimer’s disease. The present study aims to evaluate the effects of tetrahydroxy stilbene glucoside (TSG), the extract from herbal medicine Polygoni Multiflori, on cognitive impairment and the over-expression of hippocampal amyloid precursor protein (APP) induced by chronic exposure to Al in rats. Methods Rats were treated with 0.3% aluminum chloride (AlCl3) prepared in the drinking water for 90 d. AlCl3-treated animals were then randomly assigned to receive vehicle, TSG (4 g/kg), or Vitamin E (VE; 40 mg/kg) treatment for 5 months. VE served as a positive control. The effect of TSG was evaluated by passive avoidance task, and APP expression was evaluated by Western blotting. Results Following exposure to AlCl3 for 90 d, animals displayed a striking decrease (〉80%) in step-through latency in the passive avoidance task and a significant increase in the expression of APP in the hippocampus. Both TSG and VE significantly ameliorated the performance impairment in the passive avoidance task, and suppressed the over-expression of APP. Moreover, the effects of TSG, but not of VE, were in a time-dependent manner. Conclusion TSG may possess therapeutic effects against Alzheimer’s disease. 展开更多
关键词 tetrahydroxy stilbene glucoside cognitive impairment amyloid precursor protein ALUMINUM
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Effect of Antimony on Physiological Responses of Green Chinese Cabbage and Enzyme Activities of Allitic Udic Ferrisols
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作者 XIAO Xi-Yuan GUO Zhao-Hui +3 位作者 LUO Yue-Ping BI Jun-Ping YANG Miao HUANG Dong-Qin 《Pedosphere》 SCIE CAS CSCD 2015年第1期124-129,共6页
High concentrations of antimony(Sb) in soils and vegetables can cause potential health risk. However, the effect of Sb on the growth and response of crops are not well known and to date, there is still no Sb limit sta... High concentrations of antimony(Sb) in soils and vegetables can cause potential health risk. However, the effect of Sb on the growth and response of crops are not well known and to date, there is still no Sb limit standard for Allitic Udic Ferrisols in China. In this study, a greenhouse experiment was carried out to investigate the effect of antimony(Sb) on biomass, physiological performances,and macro- and micronutrient element concentrations of green Chinese cabbage(Brassica chinensis L.), as well as enzyme activities,in Allitic Udic Ferrisols from Hunan Province, China. Antimony was supplied at rates of 0(control), 2, 5, 10, 20, and 50 mg kg-1and thus with the background value of 1.0 mg kg-1, the Sb concentrations in the treated soil samples were 1, 3, 6, 11 21, and 51 mg kg-1, respectively. The results showed the leaf biomass and ascorbic acid content of cabbage significantly(P < 0.05) decreased by 30.6% and 48.3%, respectively, and soil urease and dehydrogenase activities also significantly(P < 0.05) decreased by 33.6%and 32.5%, respectively, when soil Sb concentration was 21 mg kg-1as compared with the control. The uptake of essential nutrient elements such as Mg, Cu, and Zn by cabbage was obviously affected, while the leaf soluble sugar content slightly changed when the soil Sb concentration exceeded 21 mg kg-1. Based on cabbage physiological responses and soil enzyme activities, the permissible concentration of 21 mg kg-1for Sb in Allitic Udic Ferrisols should be recommended. 展开更多
关键词 ascorbic acid biomass DEHYDROGENASE nutrient elements permissible Sb concentration soluble sugar UREASE
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