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Impact of Inert Metal Particles Flow on Aluminium Plate 被引量:1
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作者 王仲琦 刘意 +1 位作者 陈亚红 白春华 《Transactions of Tianjin University》 EI CAS 2008年第6期403-408,共6页
Inert metal explosive,a new kind of explosive,is a mixture of high explosive and inert metal particle.When this kind of explosive is detonated,an inert metal particle flow will be formed by the ex-plosive product driv... Inert metal explosive,a new kind of explosive,is a mixture of high explosive and inert metal particle.When this kind of explosive is detonated,an inert metal particle flow will be formed by the ex-plosive product driving.To determine the characteristics of the movement of the metal particle flow,a series of aluminium plates were designed to be the targets on which the metal particle flow impacted.The test result was presented and a numerical model was set up to analyze the impact of the high speed inert metal particles on aluminium plate.Based on the numerical analysis,the relationship between the characteristic of the mark on the target plate and the initial condition of the inert metal particles was pro-posed.From the analysis of the impact on target plates,more information about the movement of the metal particles could be reconstructed. 展开更多
关键词 inert metal explosive metal particle flow high speed impact
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Feature Extraction and Dimensionality Reduction of Arc Sound under Typical Penetration Status in Metal Inert Gas Welding 被引量:2
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作者 LIU Lijun LAN Hu +1 位作者 ZHENG Hongyan JIAN Xiaoxia 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2012年第2期293-298,共6页
Arc sound is well known as the potential and available resource for monitoring and controlling of the weld penetration status,which is very important to the welding process quality control,so any attentions have been ... Arc sound is well known as the potential and available resource for monitoring and controlling of the weld penetration status,which is very important to the welding process quality control,so any attentions have been paid to the relationships between the arc sound and welding parameters.Some non-linear mapping models correlating the arc sound to welding parameters have been established with the help of neural networks.However,the research of utilizing arc sound to monitor and diagnose welding process is still in its infancy.A self-made real-time sensing system is applied to make a study of arc sound under typical penetration status,including partial penetration,unstable penetration,full penetration and excessive penetration,in metal inert-gas(MIG) flat tailored welding with spray transfer.Arc sound is pretreated by using wavelet de-noising and short-time windowing technologies,and its characteristics,characterizing weld penetration status,of time-domain,frequency-domain,cepstrum-domain and geometric-domain are extracted.Subsequently,high-dimensional eigenvector is constructed and feature-level parameters are successfully fused utilizing the concept of primary principal component analysis(PCA).Ultimately,60-demensional eigenvector is replaced by the synthesis of 8-demensional vector,which achieves compression for feature space and provides technical supports for pattern classification of typical penetration status with the help of arc sound in MIG welding in the future. 展开更多
关键词 metal inert gas welding PENETRATION arc sound feature extraction dimensionality reduction
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Microstructure analysis and mechanical characteristics of tungsten inert gas and metal inert gas welded AA6082-T6 tubular joint: A comparative study 被引量:2
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作者 E.R.IMAM FAUZI M.S.CHE JAMIL +1 位作者 Z.SAMAD P.MUANGJUNBUREE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2017年第1期17-24,共8页
The present study is aimed to compare the microstructure characteristics and mechanical properties of AA6082 in T6 condition of tubular joints fabricated by tungsten inert gas welding (TIG) and metal inert gas weldi... The present study is aimed to compare the microstructure characteristics and mechanical properties of AA6082 in T6 condition of tubular joints fabricated by tungsten inert gas welding (TIG) and metal inert gas welding (MIG) processes. The effect of welding processes was analysed based on optical microscopy image, tensile testing, and Vickers micro-hardness measurements. The results showed that the tensile strengths of the TIG-welded joints were better than those of the MIG-welded joints, due to the contribution of fine equiaxed grains formation with narrower spacing arms. In terms of joint efficiency, the TIG process produced more reliable strength, which was about 25% higher compared to the MIG-joint. A significant decay of hardness was recorded in the adjacent of the weld bead zone, shown in both joints, related to phase transformation, induced by high temperatures experienced by material. A very low hardness, which was about 1.08 GPa, was recorded in the MIG-weldcd specimens. The extent of the heat-affected-zone (HAZ) in the MIG-welded joints was slightly wider than those of the TIG-welded specimens, which corresponded with a higher heat input per unit length. 展开更多
关键词 AA6082 aluminium alloy tungsten inert gas (TIG) metal inert gas (MIG) mechanical properties microstructure analysis
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Effect of metallic phase content on mechanical properties of (85Cu-15Ni)/(10NiO-NiFe_2O_4) cermet inert anode for aluminum electrolysis 被引量:7
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作者 张刚 李劼 +1 位作者 赖延清 田忠良 《中国有色金属学会会刊:英文版》 EI CSCD 2007年第5期1063-1068,共6页
(85Cu-15Ni)/(10NiO-NiFe2O4) cermets were prepared with Cu-Ni mixed powders as toughening metallic phase and 10NiO-NiFe2O4 as ceramic matrix. The phase composition, microstructure of composite and the effect of metalli... (85Cu-15Ni)/(10NiO-NiFe2O4) cermets were prepared with Cu-Ni mixed powders as toughening metallic phase and 10NiO-NiFe2O4 as ceramic matrix. The phase composition, microstructure of composite and the effect of metallic phase content on bending strength, hardness, fracture toughness and thermal shock resistance were studied. X-ray diffraction analysis indicates the coexistence of (Cu-Ni), NiO and NiFe2O4 phases in the cermets. Within the content range of metallic phase from 0% to 20% (mass fraction), the maximal bending strength (176.4 MPa) and the minimal porosity (3.9%) of composite appear at the metallic phase content of 5%. The fracture toughness increases and Vickers’ hardness decreases with increasing metal content. When the thermal shock temperature difference (△t) is below 200 ℃, the loss rate of residual strength for 10NiO-NiFe2O4 ceramic is only 8%, but about 40% for (85Cu-15Ni)/(10NiO-NiFe2O4) cermets. As △t is above 200 ℃, the residual strength sharply decreases for sample CN0 and falls slowly for samples CN5-CN20. 展开更多
关键词 NIFE2O4 金属陶瓷 铝电解 阻抗
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A novel single wire indirect arc metal inert gas welding process operated in streaming mode
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作者 Liu Aiguo Zhao Jing 《China Welding》 CAS 2022年第2期39-44,共6页
Dilution of a pad weld must be limited to a certain critical level to improve its wear and/or corrosion properties.To do that,a novel single wire indirect arc metal inert gas welding process operated in streaming mode... Dilution of a pad weld must be limited to a certain critical level to improve its wear and/or corrosion properties.To do that,a novel single wire indirect arc metal inert gas welding process operated in streaming mode was realized.A metal inert gas welding torch,arranged perpendicular to a substrate in vertical position,is fixed with an auxiliary tungsten electrode horizontally.The arc is ignited between a wire through the torch and the auxiliary electrode.The substrate is not electrically connected.The welding current is set in the range of streaming mode.304 stainless steel was pad welded on Q235 substrates in vertical position by this process.Microstructures were analyzed with optical microscope.Dilution ratios were measured with stereo light microscope and calculated.The results show that,after eliminating interference of the massive torch setup,the dilution ratio of the pad weld with optimized parameters is 5.07%,much less than that with a metal inert gas welding process,which is 26.46%.The pad weld is bonded to the substrate without defects.Microstructures of the pad weld consist of columnar austenite and ferrite between the columns.The dilution ratio increases with increasing welding current or welding velocity,and decreases with increasing distance to the substrate. 展开更多
关键词 pad welding dilution ratio indirect arc streaming mode vertical welding metal inert gas welding
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Comparative Study on Microstructures of Zincalume Steel(G550)Welded Joint Between Metal Inert Gas and Laser Beam Welding
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作者 Walisijiang Tayier Shamini Janasekaran Syed Menhazul Bari 《Journal of Harbin Institute of Technology(New Series)》 CAS 2021年第5期89-96,共8页
Zincalume steel(G550)is commonly used in various construction fields because of its high corrosion resistance and good mechanical properties.In recent years,a number of steel companies have massively produced zincalum... Zincalume steel(G550)is commonly used in various construction fields because of its high corrosion resistance and good mechanical properties.In recent years,a number of steel companies have massively produced zincalume steel(G550)with large volumes of waste.For the reduction of massive industrial wastes,the zincalume steel(G550)was welded in the lap joint configuration using different welding parameters in the metal inert gas(MIG)welding and laser beam welding(LBW)process in this study.The MIG welding and LBW are more welcomed welding methods due to their high efficiency and low cost.However,they are different as the LBW offers welding speed three to five times faster than MIG welding,while LBW’s heat transfer to workpieces is much less than MIG welding,which can avoid some distortions.The microstructure of zincalume steel(G550)was investigated using scanning electron microscopy(SEM)and the microstructure characterizations of welded specimens were analyzed.The experiment found the columnar dendrites extended under the heat flow direction during the MIG welding and LBW process.Thus,the columnar grains were formed in between the equiaxed zone and fusion zone(FZ)at high heat input and slow cooling rate.Moreover,the grain size of FZ was comparatively smaller than heat affected zone(HAZ)and base metal(BM). 展开更多
关键词 zincalume steel(G550) metal inert gas(MIG) laser beam welding(LBW) MICROSTRUCTURES
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Cold metal transfer(CMT) technology-An overview 被引量:25
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作者 S.Selvi A.Vishvaksenan E.Rajasekar 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2018年第1期28-44,共17页
Cold Metal Transfer technology has revolutionized the welding of dissimilar metals and thicker materials by producing improved weld bead aesthetics with controlled metal deposition and low heat-input. In this study, t... Cold Metal Transfer technology has revolutionized the welding of dissimilar metals and thicker materials by producing improved weld bead aesthetics with controlled metal deposition and low heat-input. In this study, the process, weld combinations, laser-CMT hybrid welding and applications of CMT welding are critically reviewed. Microstructure and other weld characteristics have been discussed at length for various base metal combinations. Particularly, the welding of aluminium and steel with better results has been possible with CMT Welding. The results reviewed in this article indicate that the CMT-Laser hybrid welding is more preferable to Laser or Laser hybrid welding. CMT welding has found applications in automobile industries, defence sectors and power plants as a method of additive manufacturing. 展开更多
关键词 COLD metal transfer [CMT]Welding Laser-CMT WELDING Additive manufacturing Composite joint metal inert gas[MIG] metal active gas[MAG]
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Analysis of weld pool vibration characteristics in pulsed gas metal arc welding 被引量:1
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作者 Lü Xiaoqing Zhang Peng Shen Jun 《China Welding》 EI CAS 2019年第4期28-32,共5页
Using highspeed camera image measuring and processing,the contour of the weld pool was extracted accurately in pulsed metal inert gas(P-MIG)welding.Based on this extraction method,time and frequency domain characteris... Using highspeed camera image measuring and processing,the contour of the weld pool was extracted accurately in pulsed metal inert gas(P-MIG)welding.Based on this extraction method,time and frequency domain characteristics at different points along the contour of the weld pool were analyzed for one pulse one droplet and one pulse two droplets,respectively.The results show that,because of the wave super position that was created by the pulsed arc and droplet impacting the weld pool,the oscillation amplitude along the weld pool fluctuated and decreased with an increase in distance from the point to the arc center.The oscillation near the arc center was complex and intense for one pulse two droplets,and the amplitude were relatively small because the oscillation caused by the pulsed arc could be offset by the molten droplet impact.The weld pool oscillation that was caused by the pulsed arc was stronger than that caused by the droplet. 展开更多
关键词 pulsed metal inert welding weld pool oscillation INTERFERENCE time domain chart frequency domain chart
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Metal vapor behavior in double electrodes TIG welding 被引量:1
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作者 Wang Xinxin Luo Yi Fan Ding 《China Welding》 EI CAS 2018年第3期27-34,共8页
In present paper, the metal vapour behavior in double electrodes TIG welding was investigated by a numerical model, including the arc plasma and weld pool. The thermodynamic parameters and transport coefficients of th... In present paper, the metal vapour behavior in double electrodes TIG welding was investigated by a numerical model, including the arc plasma and weld pool. The thermodynamic parameters and transport coefficients of the arc plasma were dependent on both the local temperature and the mass ratio of the metal vapour. A second viscosity approximation was used to formulate the diffusion coefficient of the metal vapour in the arc plasma. The temperature and flow fields together with the metal vapour concentration were simulated, and the influences of metal vapour on the arc plasma and the weld pool were analyzed. It was found that the metal vapour transport in the arc plasma was significantly influenced by the flow of the arc plasma, and the distribution of the metal vapour was more extended in the direction perpendicular to the line through the double electrodes tips. Both the arc plasma and the heat flux at the weld pool were constricted by the presence of the metal vapour, while the metal vapour had a minor effect on the total heat input to the work piece and the weld pool profile as a whole. 展开更多
关键词 metal vapour double electrodes tungsten inert gas welding heat input
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Origins of the Problematic Substances in Fines, for Their Acceptance at Inert Landfills
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作者 Soukaina Oujana Denis Sanchez 《Journal of Geoscience and Environment Protection》 2018年第5期237-246,共10页
Integrated solid waste management (ISWM) involves approaching solid waste in a comprehensive manner with careful selection of appropriate technology. The aim of good waste management is to push waste up the hierarchy ... Integrated solid waste management (ISWM) involves approaching solid waste in a comprehensive manner with careful selection of appropriate technology. The aim of good waste management is to push waste up the hierarchy with landfill as a last resort. However given the current sorting technology, heterogeneous residues called Fines are created, they are considered at the present time as non-sortable and non-recoverable sent to second class landfills. A previous conducted study has revealed that fines contain several problematic substances for an inert classification. This article summarizes the most important problematic substances in fines for their acceptance inert landfills. These substances were identified by analyzing several samples collected from a siting of non-hazardous solid waste in the region of Rh&#244ne-Alpes in France. Eluate Analysis and fines analysis were conducted in order to identify the presence of any component that could prevent the classification of fines in an inert landfill. The obtained results were compared with the limit values for waste acceptance in an inert landfill. The study concluded that the six top-ranking problematic substances are Copper, Mercury, Antimony, Chloride, Fluoride and Sulfates, this study gives additional information on the origins of these substances that deserves particular attention to better limit their presence in the input of fines stream. 展开更多
关键词 FINES Heavy metals inert WASTE Landfill Non-Hazardous WASTE
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Theoretically Catalytic Synthesis of 5-Nitro-1,2,4-Triazol-3-One in Inert Gas Clustered System (X<sub>6</sub>, X = He, Ne)
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作者 Min-Hsien Liu Ming-Yung Wu 《Open Journal of Physical Chemistry》 2012年第2期107-116,共10页
Inert gas-clustered systems (Xn, X = He, Ne, Ar and n = 2 - 20) were established in this study and their stability as a result of interparticulate interaction was examined. Ferric chloride and ferrous oxides were used... Inert gas-clustered systems (Xn, X = He, Ne, Ar and n = 2 - 20) were established in this study and their stability as a result of interparticulate interaction was examined. Ferric chloride and ferrous oxides were used as catalysts to promote reaction, and 5-nitro-1,2,4-triazol-3-one (NTO) was theoretically synthesized under an inert gas (X6)-clustered environment in this study. The raw material, urea, initially underwent chlorination using chlorine as the reagent, followed by amination, formylation and nitration. Reaction routes closely related to the experimental processes were successfully constructed, and the corresponding energy barriers were estimated for each elementary reaction. The findings revealed that the average errors in the B3LYP/6-31G(d, p)-calculated geometry and vibrational frequency of NTO in an Ne6 system relative to the observed values were 0.83% and 1.84%, respectively. The neon gas-clustered system achieved greater stabilization, which results from the difference in self-consistent field energy (ESCF), than the corresponding stabilization acquired in a helium- or argon-based system. Ferric chloride serves as a good catalyst to reduce the energy barrier of the chlorination reaction, and ferrous oxide is suitable for catalyzing the amination, formylation and nitration reactions, although nitric acid is the better agent for nitration. The catalytic Ne6-clustered reaction system is suggested to be a more feasible pathway for the synthesis of NTO. 展开更多
关键词 NTO inert Gas Clustered SYSTEM metal Catalyst FORMYLATION Reaction
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Investigate Weld Quality of Gas Metal Arc Welding Process Through Online Monitoring of Input Parameters
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作者 Nishadi WEERASINGHE Banuka PANDITHASEKARA Dulaj THENNAKOON 《Instrumentation》 2021年第3期52-66,共15页
Gas metal arc welding(GMAW)is also referred as the metal inert gas(MIG)welding which is a process of welding done by the formation of an electric arc between the consumable wire electrode and the workpiece.Through the... Gas metal arc welding(GMAW)is also referred as the metal inert gas(MIG)welding which is a process of welding done by the formation of an electric arc between the consumable wire electrode and the workpiece.Through the welding process,a continuous flow of inert gas is supplied,and it avoids the weld being subjected to react with atmospheric air.The process can be automatic or semi-automatic where the main input parameters like current and the voltage can be direct and constant,respectively.Not only the current and voltage the welding quality depends on some more input parameters such as arc gap,velocity,and temperature.In this paper,we explain about a setup which is capable of real-time monitoring of input parameters mentioned above and selecting the best MIG welding parameters for the mild steel.The setup is composed of several sensors and microcontrollers for the collection and the measurement of the input parameters.The samples were categorized according to the federate and the voltage adjustment of the selected welding machine.Then the final objective was to identify the samples of the weld with different parameter changes which are monitored through the system.For the analysis,the samples were subjected to tensile and hardness tests,and microstructure tests to find the dependence of the input parameters which effect for the weld quality.Finally,the experimental results verified the effectiveness of the system for the selection of the quality weld. 展开更多
关键词 Real-time metal inert Gas(MIG) Gas metal Arc Welding(GMAW) Input Parameters Monitoring Setup Weld Quality
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Robust Particle Swarm Optimization Algorithm for Modeling the Effectof Oxides Thermal Properties on AMIG 304L Stainless Steel Welds
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作者 Rachid Djoudjou Abdeljlil Chihaoui Hedhibi +3 位作者 Kamel Touileb Abousoufiane Ouis Sahbi Boubaker Hani Said Abdo 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第11期1809-1825,共17页
There are several advantages to the MIG(Metal Inert Gas)process,which explains its increased use in variouswelding sectors,such as automotive,marine,and construction.A variant of the MIG process,where the sameequipmen... There are several advantages to the MIG(Metal Inert Gas)process,which explains its increased use in variouswelding sectors,such as automotive,marine,and construction.A variant of the MIG process,where the sameequipment is employed except for the deposition of a thin layer of flux before the welding operation,is the AMIG(Activated Metal Inert Gas)technique.This study focuses on investigating the impact of physical properties ofindividual metallic oxide fluxes for 304L stainless steel welding joint morphology and to what extent it can helpdetermine a relationship among weld depth penetration,the aspect ratio,and the input physical properties ofthe oxides.Five types of oxides,TiO_(2),SiO_(2),Fe_(2)O_(3),Cr_(2)O_(3),and Mn_(2)O_(3),are tested on butt joint design withoutpreparation of the edges.A robust algorithm based on the particle swarm optimization(PSO)technique is appliedto optimally tune the models’parameters,such as the quadratic error between the actual outputs(depth and aspectratio),and the error estimated by the models’outputs is minimized.The results showed that the proposed PSOmodel is first and foremost robust against uncertainties in measurement devices and modeling errors,and second,that it is capable of accurately representing and quantifying the weld depth penetration and the weld aspect ratioto the oxides’thermal properties. 展开更多
关键词 Activated metal inert gas welding stainless steel activating flux oxides’thermal properties particle swarm optimization
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工业生产中Zr702锆卷MIG焊接工艺
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作者 赵雅 李世霞 +2 位作者 冶维财 张鹏 梁俊刚 《焊接》 2024年第3期59-63,共5页
应用光学显微镜(OM)、扫描电镜(SEM)和能谱仪(EDS)等技术对不同焊接工艺条件下的Zr702卷MIG焊接接头的组织及性能进行了研究和分析。结果表明,工业纯锆Zr702在MIG焊接过程中高温下的焊缝熔池和热影响区容易受到空气污染,吸收空气中大量... 应用光学显微镜(OM)、扫描电镜(SEM)和能谱仪(EDS)等技术对不同焊接工艺条件下的Zr702卷MIG焊接接头的组织及性能进行了研究和分析。结果表明,工业纯锆Zr702在MIG焊接过程中高温下的焊缝熔池和热影响区容易受到空气污染,吸收空气中大量的氧气,氧原子以间隙原子形式固溶在锆基体中,造成晶格畸变,内应力变大,恶化焊接接头性能;采用尾部拖罩保护,可以有效保护焊缝免受空气污染,得到力学性能良好的焊接接头;被空气污染的焊缝颜色为灰黑色,而惰性气体保护良好的焊缝颜色为银白色;在工业纯锆Zr702焊接过程中,热影响区会产生马氏体相变,小电弧电压、快焊接速度可以得到晶粒尺寸较小的板条马氏体;在工业纯锆Zr702焊接时,采用尾部拖罩保护、在保证焊缝成形的基础上采用小电弧电压、快焊接速度可以得到力学性能良好的焊接接头。 展开更多
关键词 工业纯锆 熔化极惰性气体保护焊 尾部拖罩 显微硬度
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脉冲加热惰性气体熔融-红外吸收和热导法测定金属铬中氧氮含量
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作者 孙小飞 《铁合金》 CAS 2024年第6期41-43,共3页
利用氧氮氢分析仪建立了脉冲加热惰性气体熔融-红外吸收和热导法测定金属铬中氧氮含量,采用高级纯石墨套坩埚,以高纯免洗镍篮为助熔剂,选择最佳的测定条件(分析功率为5000 W,脱气功率为5500 W,分析氧最短时间为40 s、氮最短时间为65 s)... 利用氧氮氢分析仪建立了脉冲加热惰性气体熔融-红外吸收和热导法测定金属铬中氧氮含量,采用高级纯石墨套坩埚,以高纯免洗镍篮为助熔剂,选择最佳的测定条件(分析功率为5000 W,脱气功率为5500 W,分析氧最短时间为40 s、氮最短时间为65 s),通过该方法对助熔剂空白实验、试样测定的精密度、准确度以及回收率实验。实验证明,该方法测定金属铬中氧氮含量快速准确,为金属铬中氧氮含量的检测提供了一条有效的途径. 展开更多
关键词 脉冲加热惰性气体熔融法 金属铬 氧氮含量 测定
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高强铝合金的MIG以及激光-MIG焊接工艺对比 被引量:41
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作者 许良红 田志凌 +1 位作者 彭云 张晓牧 《焊接学报》 EI CAS CSCD 北大核心 2007年第2期38-42,共5页
以20 mm厚的2519-T87高强铝合金为研究对象,研究了熔化极惰性气体保护焊(MIG焊)和CO2激光-MIG复合焊的焊接效率、组织以及力学性能之间的区别。结果表明,激光-MIG复合焊的焊接效率是MIG焊的5倍,焊接熔深更大,接头的抗拉强度也提高到母材... 以20 mm厚的2519-T87高强铝合金为研究对象,研究了熔化极惰性气体保护焊(MIG焊)和CO2激光-MIG复合焊的焊接效率、组织以及力学性能之间的区别。结果表明,激光-MIG复合焊的焊接效率是MIG焊的5倍,焊接熔深更大,接头的抗拉强度也提高到母材的70%以上,而MIG焊接头抗拉强度仅仅只有母材的60%左右。由于复合焊的热输入比较小,而且熔池的熔融金属的流动情况以及温度梯度与MIG焊有很大的不同,复合焊的焊缝组织比MIG焊的更加细小,接头处的也没有发现MIG焊接头中出现的等轴晶区。 展开更多
关键词 激光-熔化极惰性气体保护复合焊 熔化极惰性气体保护焊 力学性能 显微组织
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Ni-Fe-Cu惰性金属阳极的抗氧化和耐蚀性能 被引量:12
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作者 石忠宁 徐君莉 +1 位作者 邱竹贤 舒芳霞 《中国有色金属学报》 EI CAS CSCD 北大核心 2004年第4期591-595,共5页
对Ni Fe Cu合金的抗氧化和耐熔盐腐蚀性能进行了研究。结果显示,该合金的氧化动力学曲线符合抛物线规则。静态电解质中的溶解腐蚀速率随温度的增高和NaF与AlF3的摩尔分子比的降低而增大。在不同电解条件下,组成为NaF AlF3 NaCl CaF2 Al... 对Ni Fe Cu合金的抗氧化和耐熔盐腐蚀性能进行了研究。结果显示,该合金的氧化动力学曲线符合抛物线规则。静态电解质中的溶解腐蚀速率随温度的增高和NaF与AlF3的摩尔分子比的降低而增大。在不同电解条件下,组成为NaF AlF3 NaCl CaF2 Al2O3的电解质体系中电解时,该阳极周围产生大量气泡,槽电压在3.6~4.2之间波动,阳极的电解极化腐蚀速率随电解质中氧化铝浓度的增高、温度的降低而减小,产品铝的纯度达到97%~98%。 展开更多
关键词 Ni-Fe-Cu合金 惰性金属阳极 耐蚀性能 熔盐腐蚀 抗氧化性能 炼铝 电解
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铝电解用金属惰性阳极的研究进展 被引量:11
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作者 丁海洋 卢世刚 +2 位作者 阚素荣 张向军 杨娟玉 《稀有金属》 EI CAS CSCD 北大核心 2009年第3期420-425,共6页
铝电解工业已有百余年的历史,以惰性阳极为代表的新工艺是铝电解研究的热点问题。惰性阳极主要分为陶瓷阳极、金属陶瓷阳极和金属阳极3类,本文分析了3种惰性阳极的特点,并重点评述金属阳极的研究近况。钾冰晶石电解质体系作为一种铝电... 铝电解工业已有百余年的历史,以惰性阳极为代表的新工艺是铝电解研究的热点问题。惰性阳极主要分为陶瓷阳极、金属陶瓷阳极和金属阳极3类,本文分析了3种惰性阳极的特点,并重点评述金属阳极的研究近况。钾冰晶石电解质体系作为一种铝电解新型低温电解质体系,具有操作温度低、Al2O3溶解性能好等优势。指出在钾冰晶石低温体系中应用金属阳极将成为今后铝电解很有希望的一种新工艺。 展开更多
关键词 惰性阳极 金属阳极 铝电解 钾冰晶石
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Cu-Ni-Al惰性金属阳极铝电解应用测试 被引量:8
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作者 石忠宁 徐君莉 +1 位作者 高炳亮 邱竹贤 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2003年第4期361-364,共4页
采用Cu Ni Al合金作金属阳极 ,在温度 75 0~ 85 0℃ ,电流密度 0 75~ 1 1 0A/cm2 的不同分子比和氧化铝质量分数的Na3 AlF6 NaCl CaF2 Al2 O3 熔盐中进行电解测试·结果表明 ,在不同电解操作条件下该阳极材料的腐蚀程度不一样 ... 采用Cu Ni Al合金作金属阳极 ,在温度 75 0~ 85 0℃ ,电流密度 0 75~ 1 1 0A/cm2 的不同分子比和氧化铝质量分数的Na3 AlF6 NaCl CaF2 Al2 O3 熔盐中进行电解测试·结果表明 ,在不同电解操作条件下该阳极材料的腐蚀程度不一样 ,阳极在熔盐中的腐蚀速率远大于在空气中的氧化腐蚀速率 ,而且阳极电解的腐蚀速率与电解质中的氧化铝质量分数相关 ,氧化铝质量分数大 ,则阳极腐蚀速率小·另外 。 展开更多
关键词 惰性金属阳极 Cu-Ni-Al合金 熔盐腐蚀 低温铝电解
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Cu-Ni-Al金属阳极抗氧化耐腐蚀性能研究 被引量:8
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作者 石忠宁 徐君莉 +3 位作者 邱竹贤 舒方霞 高炳亮 王兆文 《轻金属》 CSCD 北大核心 2003年第6期22-24,共3页
本文对铝电解阳极材料Cu -Ni-Al合金进行抗氧化耐腐蚀性能测试 ,结果说明Cu -Ni-Al阳极在空气和氧气中具有良好的抗氧化性 ,其中温度和气氛对该合金材料抗氧化影响很大 ;在不同条件下 ,电解质组成为Na3AlF6 -NaCl-CaF2 -Al2 O3的熔盐中... 本文对铝电解阳极材料Cu -Ni-Al合金进行抗氧化耐腐蚀性能测试 ,结果说明Cu -Ni-Al阳极在空气和氧气中具有良好的抗氧化性 ,其中温度和气氛对该合金材料抗氧化影响很大 ;在不同条件下 ,电解质组成为Na3AlF6 -NaCl-CaF2 -Al2 O3的熔盐中溶解损失比较小。在熔盐中腐蚀速率随着温度升高、电解质分子比降低而增大。 展开更多
关键词 惯性金属阳极 Cu-Ni-Al合金 高温氧化 熔盐腐蚀
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