期刊文献+
共找到20,414篇文章
< 1 2 250 >
每页显示 20 50 100
“三创五育”背景下“双一流”高校本科人才培养的DIE模式初探及评价
1
作者 许章华 张超飞 +2 位作者 罗敏 杨远垚 刘智才 《高等理科教育》 2024年第2期53-61,共9页
针对新时代背景下“双一流”高校人才培养的发展需求,在“三创五育”理念指导下,解析基于产学研合作理论引入的DIE模式的内涵,系统阐述了DIE理念贯彻下的教学系统设计并付诸实践,旨在打破教学系、研究所、企业之间的壁垒,为学生学习、... 针对新时代背景下“双一流”高校人才培养的发展需求,在“三创五育”理念指导下,解析基于产学研合作理论引入的DIE模式的内涵,系统阐述了DIE理念贯彻下的教学系统设计并付诸实践,旨在打破教学系、研究所、企业之间的壁垒,为学生学习、实践提供更多样化的渠道。问卷调查结果表明DIE模式在本科生团队协作、学术创造、自信心树立等方面有切实作用,为培养全面发展的高素质本科人才提供了参考。 展开更多
关键词 “三创五育” die模式 “双一流”高校 本科人才培养
下载PDF
Thin-walled and large-sized magnesium alloy die castings for passenger car cockpit:Application,materials,and manufacture
2
作者 Lei Zhan Yu-meng Sun +6 位作者 Yang Song Chun-hua Kong Kai Ma Bai-xin Dong Hong-yu Yang Shi-li Shu Feng Qiu 《China Foundry》 SCIE EI CAS CSCD 2024年第5期525-545,共21页
In order to effectively reduce energy consumption and increase range mile,new energy vehicles represented by Tesla have greatly aroused the application of integrated magnesium(Mg)alloy die casting technology in automo... In order to effectively reduce energy consumption and increase range mile,new energy vehicles represented by Tesla have greatly aroused the application of integrated magnesium(Mg)alloy die casting technology in automobiles.Previously,the application of Mg alloys in automobiles,especially in automotive cockpit components,is quite extensive,while it has almost disappeared for a period of time due to its relatively high cost,causing a certain degree of information loss in the application technology of Mg alloy parts in automobiles.The rapid development of automotive technology has led to a higher requirement for the automotive components compared with those traditional one.Therefore,whatever the components themselves,or the Mg alloy materials and die casting process have to face an increasing challenge,needing to be upgraded.In addition,owing to its high integration characteristics,the application of Mg alloy die casting technology in large-sized and thin-walled automotive parts has inherent advantages and needs to be expanded urgently.Indeed,it necessitates exploring advance Mg alloys and new product structures and optimizing die casting processes.This article summarizes and analyzes the development status of thin-walled and large-sized die casting Mg alloy parts in passenger car cockpit and corresponding material selection methods,die casting processes as well as mold design techniques.Furthermore,this work will aid researchers in establishing a comprehensive understanding of the manufacture of thin-walled and large-sized die casting Mg alloy parts in automobile cockpit.It will also assist them in developing new Mg alloys with improved comprehensive performance and new processes to meet the high requirements for die casting automotive components. 展开更多
关键词 Mg alloys thin wall large size automotive part die casting
下载PDF
Compression properties of cost-efficient porous expanded clay reinforced AA7075 syntactic foams fabricated by industrial-oriented die casting technology
3
作者 İsmail Cem Akgün Çağın Bolat Ali Gökşenli 《China Foundry》 SCIE EI CAS CSCD 2024年第1期60-70,共11页
In today’s manufacturing industries,hard competition between rival firms makes it compulsory for researchers to design lighter and cheaper machine components due to the megatrends of cost-effectiveness and anti-pollu... In today’s manufacturing industries,hard competition between rival firms makes it compulsory for researchers to design lighter and cheaper machine components due to the megatrends of cost-effectiveness and anti-pollution.At this point,aluminum syntactic foams(ASFs)are new-generation engineering composites and come into the upfront as a problem-solver.Owing to their features like low density,sufficient elongation,and perfect energy absorption ability,these advanced foams have been considerably seductive for many industrial sectors nowadays.In this study,an industrial-oriented automatic die casting technology was used for the first time to manufacture the combination of AA7075/porous expanded clay(PEC).Micro evaluations(optical and FESEM)reveal that there is a homogenous particle distribution in the foam samples,and inspections are compatible with the other ASF studies.Additionally,T6 aging heat treatment was operated on one half of the produced foams to explore the probable impact of aging on the compressive responses.Attained results show that PEC particles can be an alternative to expensive hollow spheres used in the previous works.Besides,a favorable relationship is ascertained between the aging treatment and mechanical properties such as compression strength and plateau strength. 展开更多
关键词 die casting porous materials metal matrix sytanctic foams expanded clay compressive deformation
下载PDF
Effect of slow shot speed on externally solidified crystal,porosity and tensile property in a newly developed high-pressure die-cast Al-Si alloy
4
作者 Wen-ning Liu Wei Zhang +6 位作者 Peng-yue Wang Yi-xian Liu Xiang-yi Jiao Ao-xiang Wan Cheng-gang Wang Guo-dong Tong Shou-mei Xiong 《China Foundry》 SCIE EI CAS CSCD 2024年第1期11-19,共9页
The effect of slow shot speed on externally solidified crystal(ESC),porosity and tensile property in a newly developed high-pressure die-cast Al-Si alloy was investigated by optical microscopy(OM),scanning electron mi... The effect of slow shot speed on externally solidified crystal(ESC),porosity and tensile property in a newly developed high-pressure die-cast Al-Si alloy was investigated by optical microscopy(OM),scanning electron microscopy(SEM)and laboratory computed tomography(CT).Results showed that the newly developed AlSi9MnMoV alloy exhibited improved mechanical properties when compared to the AlSi10MnMg alloy.The AlSi9MnMoV alloy,which was designed with trace multicomponent additions,displays a notable grain refining effect in comparison to the AlSi10MnMg alloy.Refining elements Ti,Zr,V,Nb,B promote heterogeneous nucleation and reduce the grain size of primaryα-Al.At a lower slow shot speed,the large ESCs are easier to form and gather,developing into the dendrite net and net-shrinkage.With an increase in slow shot speed,the size and number of ESCs and porosities significantly reduce.In addition,the distribution of ESCs is more dispersed and the net-shrinkage disappears.The tensile property is greatly improved by adopting a higher slow shot speed.The ultimate tensile strength is enhanced from 260.31 MPa to 290.31 MPa(increased by 11.52%),and the elongation is enhanced from 3.72%to 6.34%(increased by 70.52%). 展开更多
关键词 hypoeutectic Al-Si alloy high pressure die casting POROSITY externally solidified crystal tensile property
下载PDF
Characteristics and distribution of microstructures in high pressure die cast alloys with X-ray microtomography:A review
5
作者 Hai-dong Zhao Xue-ling Wang +2 位作者 Qian Wan Wen-hui Bai Fei Liu 《China Foundry》 SCIE EI CAS CSCD 2024年第5期427-444,共18页
Al and Mg alloy high pressure die castings(HPDC)are increasingly used in automotive industries.The microstructures in the castings have decisive effect on the casting mechanical properties,in which the microstructure ... Al and Mg alloy high pressure die castings(HPDC)are increasingly used in automotive industries.The microstructures in the castings have decisive effect on the casting mechanical properties,in which the microstructure characteristics are fundamental for the investigation of the microstructure-property relation.During the past decade,the microstructure characteristics of HPDC Al and Mg alloys,especially micro-pores andα-Fe,have been investigated from two-dimensional(2D)to threedimensional with X-ray micro-computed tomography(μ-CT).This paper provides an overview of the current understanding regarding the 3D characteristics and formation mechanisms of microstructures in HPDC alloys,their spatial distributions,and the impact on mechanical properties.Additionally,it outlines future research directions for the formation and control of heterogeneous microstructures in HPDC alloys. 展开更多
关键词 high pressure die casting microstructure three-dimensional characteristics DISTRIBUTION Al and Mg alloys
下载PDF
语义构建中的认知识解因素——以die of X和die from X为个案
6
作者 戴志军 《黑河学院学报》 2023年第3期123-125,共3页
语义构建离不开认知识解因素。die of和die from可以与同样的表达式搭配,即die of X和die from X。就规约意义而言,die of X通常表达客观的、直接的原因,而die from X通常表达客观的、间接的原因。但在die of X和die from X语义构建过程... 语义构建离不开认知识解因素。die of和die from可以与同样的表达式搭配,即die of X和die from X。就规约意义而言,die of X通常表达客观的、直接的原因,而die from X通常表达客观的、间接的原因。但在die of X和die from X语义构建过程中,通过认知识解,客观的、直接的原因会被识解为主观的、间接原因,客观的、间接的原因会被构建为主观的、直接的原因。 展开更多
关键词 die of X die from X 语义构建 认知识解
下载PDF
Temperature change and stress distribution analysis of die surface in Al-alloy die casting process and experimental study on die heat check 被引量:6
7
作者 Hu Xinping Zhao Guoqun Wu Bingyao 《China Foundry》 SCIE CAS 2008年第1期47-53,共7页
The temperature change of the die surface in practical aluminum alloy die casting process was analyzed,and a 2D model was formulated on the basis of a deep concave round cavity without sliding core to analyze thestres... The temperature change of the die surface in practical aluminum alloy die casting process was analyzed,and a 2D model was formulated on the basis of a deep concave round cavity without sliding core to analyze thestress distributions along the die surface in detail. Equipment was designed to test the thermal state of the die steelin different thermal loading conditions. The results of stress analysis showed that, the value of thermal stress (maximum1.5 GPa) caused in the die filling and die spraying stages was larger than the mechanical stress (maximum 85 MPa)caused in the die locking stage. The results of the thermal check experiment showed that there were three stages ofdie dissolving, and that the stress distribution shown by the samples' cracking routine was close to the die surfacestress analysis. 展开更多
关键词 die temperature die stress die filling die locking die spraying die casting
下载PDF
Henry入路蝶形钢板内固定治疗桡骨远端双柱Die-punch骨折 被引量:1
8
作者 夏海波 兰俊 +2 位作者 蒋李青 杨华飞 牛晓辉 《中国骨伤》 CAS CSCD 2023年第4期376-380,共5页
目的:探讨Henry入路蝶形钢板切开复位内固定治疗桡骨远端双柱Die-punch骨折的临床疗效。方法:选择2018年1月至2021年6月采用Henry手术入路切开复位内固定治疗的26例桡骨远端双柱Die-punch骨折患者,男14例,女12例;年龄20~75(44.2±3... 目的:探讨Henry入路蝶形钢板切开复位内固定治疗桡骨远端双柱Die-punch骨折的临床疗效。方法:选择2018年1月至2021年6月采用Henry手术入路切开复位内固定治疗的26例桡骨远端双柱Die-punch骨折患者,男14例,女12例;年龄20~75(44.2±3.4)岁。观察术后并发症情况,术后12个月采用Gartland-Werley评分标准进行腕关节功能评价。结果:26例患者均获得随访,时间10~18(13.4±0.8)个月。所有骨折均获得骨性愈合,时间8.5~15.8(11.4±0.5)周。所有患者手术切口都Ⅰ期愈合,无伤口感染、血管神经损伤及内固定失效等病例。术后12个月GarthndWerley评分(3.65±0.36)分,优16例,良8例,可2例。结论:通过掌侧Henry入路,使用蝶形钢板切开复位内固定治疗桡骨远端双柱Die-punch骨折,可获得满意的临床疗效。 展开更多
关键词 Henry入路 蝶形钢板 内固定 桡骨远端双柱骨折 die-punch骨折
下载PDF
Opportunities and challenges of Chinese die-casting market
9
作者 Caifei SONG 《China Foundry》 SCIE CAS 2004年第1期23-27,共5页
The present status and perspectives of Chinese die-casting market were commented. In 2003, the total output of die castings in the whole country was 708000 tons, in which the outputs of Al-alloy, Zn-alloy, Mg-alloy, C... The present status and perspectives of Chinese die-casting market were commented. In 2003, the total output of die castings in the whole country was 708000 tons, in which the outputs of Al-alloy, Zn-alloy, Mg-alloy, Cu-alloy die castings were 474600 tons, 222000 tons, 5800 tons, 5600 tons, respectively, each accounted for 67%, 31.35%, 0.85%, 0.8% of the total. The annual sale volume of die-casting machines was approximately 1800. And the gross output value of dies approached RMB 38 billion, in which die-casting dies accounted for about 10%. In the die-casting industry of the entire country, the foreign capital enterprises, public-run enterprises, township and village enterprises, private enterprises accounted for over 80% of the total die-casting enterprises. Super huge die-casting groups are forming. 展开更多
关键词 die-casting market die-casting component die-casting equipment die-casting die die-casting alloys
下载PDF
Effects of magnesium and copper additions on tensile properties of Al-Si-Cr die casting alloy under as-cast and T5 conditions 被引量:1
10
作者 Hong-yi Zhan Yi-wu Xu +3 位作者 Pan Wang Jian-feng Wang Jin-ping Li Le-peng Zhang 《China Foundry》 SCIE CAS CSCD 2023年第1期12-22,共11页
Aluminum high pressure die casting(HPDC)technology has evolved in the past decades,enabling stronger and larger one-piece casting with significant part consolidation.It also offers a higher design freedom for more mas... Aluminum high pressure die casting(HPDC)technology has evolved in the past decades,enabling stronger and larger one-piece casting with significant part consolidation.It also offers a higher design freedom for more mass-efficient thin-walled body structures.For body structures that require excellent ductility and fracture toughness to be joined with steel sheet via self-piercing riveting(for instance,shock towers and hinge pillars,etc.),a costly T7 heat treatment comprising a solution heat treatment at elevated temperatures(450℃-500℃)followed by an over-ageing heat treatment is needed to optimize microstructure for meeting product requirement.To enable cost-efficient mass production of HPDC body structures,it is important to eliminate the expensive T7 heat treatment without sacrificing mechanical properties.Optimizing die cast alloy chemistry is a potential solution to improve fracture toughness and ductility of the HPDC components.The present study intends to tailor the Mg and Cu additions for a new Al-Si-Cr type die casting alloy(registered as A379 with The Aluminum Association,USA)to achieve the desired tensile properties without using T7 heat treatment.It was found that Cu addition should be avoided,as it is not effective in enhancing strength while degrades tensile ductility.Mg addition is very effective in improving strength and has minor impact on tensile ductility.The investigated Al-Si-Cr alloy with a nominal composition of Al-8.5wt.%Si-0.3wt.%Cr-0.2wt.%Fe shows comparable tensile properties with the T7 treated AlSi10MnMg alloy which is currently used for manufacturing shock towers and hinge pillars. 展开更多
关键词 Al-Si alloy INTERMETALLICS high pressure die casting tensile property T7 heat treatment
下载PDF
一种面向IO Die的敏捷验证方法
11
作者 罗莉 石伟 +3 位作者 何鸿君 潘国腾 王蕾 龚锐 《计算机工程与科学》 CSCD 北大核心 2023年第4期571-576,共6页
IO Die可以用做IO扩展芯片,也可作为芯粒(chiplet)复用于多个项目。提出一种面向IO Die的敏捷验证方法,验证平台包括子系统级、簇级、全片级3个层次,可实现测试激励的跨层次复用;针对各验证层次的测试激励的自动生成方式进行优化,分别... IO Die可以用做IO扩展芯片,也可作为芯粒(chiplet)复用于多个项目。提出一种面向IO Die的敏捷验证方法,验证平台包括子系统级、簇级、全片级3个层次,可实现测试激励的跨层次复用;针对各验证层次的测试激励的自动生成方式进行优化,分别采用覆盖率驱动、可配置约束产生、多目标优化策略,提高测试激励的生成效率。实验结果表明,该方法在保证效率和可靠性的前提下,可以降低验证成本,缩短验证时间,快速获得已知合格裸片KGD。 展开更多
关键词 裸片 敏捷验证 覆盖率驱动 可配置约束 多目标优化
下载PDF
Survey of the 4th China International Diecasting Exhibition
12
作者 Xianzeng PAN(Shenzhen MG Technology Co., Ltd., Shenzhen 518111, P. R. China) 《China Foundry》 SCIE CAS 2004年第2期147-151,共5页
Die casting machines, dies, die castings, peripheral equipments, die lubricants, raw materials for die casting, melting & holding furnaces, cleaning equipments, etc. were exhibited during the 4th China Internation... Die casting machines, dies, die castings, peripheral equipments, die lubricants, raw materials for die casting, melting & holding furnaces, cleaning equipments, etc. were exhibited during the 4th China International Die Casting Exhibition, which was surveyed in the paper. 展开更多
关键词 die casting machine die die casting peripheral equipment die lubricant raw material melting furnace cleaning equipment
下载PDF
高中“Die”的用法小结
13
作者 王新珍 《教育教学论坛》 2010年第1期99-100,共2页
die的各种形式及用法,die相关近义词组的辨析运用。
关键词 die DEAD DEATH die o屿die from die down与die away die off与die OUT
下载PDF
Dietary approach in the treatment of nonalcoholic fatty liver disease 被引量:2
14
作者 Silvia Marinho Ferolla Luciana Costa Silva +4 位作者 Maria de Lourdes Abreu Ferrari Aloísio Sales da Cunha Flaviano dos Santos Martins Cláudia Alves Couto Teresa Cristina Abreu Ferrari 《World Journal of Hepatology》 2015年第24期2522-2534,共13页
Nonalcoholic fatty liver disease(NAFLD) has been identified as one of the most prevalent chronic liver disease in adults and children populations. NAFLD is usually associated with the metabolic syndrome(MS), which is ... Nonalcoholic fatty liver disease(NAFLD) has been identified as one of the most prevalent chronic liver disease in adults and children populations. NAFLD is usually associated with the metabolic syndrome(MS), which is chiefly related to insulin resistance and its consequences. Insulin resistance has a crucial role in the pathogenesis of hepatic steatosis and potentially nonalcoholic steatohepatitis(NASH). Because of the contemporary epidemics of MS and obesity, the burden of NAFLD is also expected to rise. Unhealthy diets, such as the so-called western diet, are enriched in fructose, trans-fatty acids and saturated fat and seem to be associated with the development of NAFLD. In human studies, certain dietary sugars, particularly fructose, are used as a substrate for lipogenesis leading to hepatic fatty infiltration, inflammation, and possibly fibrosis. Other investigations have shown that fat consumption especially cholesterol and trans/saturated fatty acids are also steatogenic and seem to increase visceral adiposity. The identification of specific dietary components that favor the development of NASH could be important for the management of this disorder. This review focuses on the effects of different dietary approaches to prevent and treat NAFLD emphasizing the macronutrients and energy composition. 展开更多
关键词 Fatty liver dietary carbohydrates dietary fats die
下载PDF
Determination of wax pattern die profile for investment casting of turbine blades 被引量:8
15
作者 董一巍 卜昆 +1 位作者 窦杨青 张定华 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第2期378-387,共10页
In order to conform to dimensional tolerances, an efficient numerical method, displacement iterative compensation method, based on finite element methodology (FEM) was presented for the wax pattern die profile desig... In order to conform to dimensional tolerances, an efficient numerical method, displacement iterative compensation method, based on finite element methodology (FEM) was presented for the wax pattern die profile design of turbine blades. Casting shrinkages at different positions of the blade which was considered nonlinear thermo-mechanical casting deformations were calculated. Based on the displacement iterative compensation method proposed, the optimized wax pattern die profile can be established. For a A356 alloy blade, substantial reduction in dimensional and shape tolerances was achieved with the developed die shape optimization system. Numerical simulation result obtained by the proposed method shows a good agreement with the result measured experimentally. After four times iterations, compared with the CAD model of turbine blade, the total form error decreases to 0.001 978 mm from the orevious 0.515 815 mm. 展开更多
关键词 turbine blade numerical simulation displacement field wax pattern die profile investment casting
下载PDF
Simulation of extrusion process of complicated aluminium profile and die trial 被引量:11
16
作者 何钊 王赫男 +1 位作者 王孟君 李光耀 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第7期1732-1737,共6页
The arbitrary Lagrangian-Eulerian(ALE) adaptive remeshing technology and the HyperXtrude software of transient finite element simulations were used on analogue simulation of aluminium extrusion processing.The field ... The arbitrary Lagrangian-Eulerian(ALE) adaptive remeshing technology and the HyperXtrude software of transient finite element simulations were used on analogue simulation of aluminium extrusion processing.The field distributions of strain rate,stress,temperature and velocity of metal flow were obtained.The results are basically consistent with the experiment,which indicates that this method may successfully predict the defects in the actual extrusion process. 展开更多
关键词 transient finite element simulations complicated aluminium profile arbitrary Lagrangian-Eulerian(ALE) method die trial
下载PDF
Low cycle fatigue behavior of T4-treated Al-Zn-Mg-Cu alloys prepared by squeeze casting and gravity die casting 被引量:6
17
作者 郑成坤 张卫文 +1 位作者 张大童 李元元 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第11期3505-3514,共10页
Gravity die casting(GC) and squeeze casting(SC) T4-treated Al-7.0Zn-2.5Mg-2.1Cu alloys were employed to investigate the microstructures,mechanical properties and low cycle fatigue(LCF) behavior.The results show that m... Gravity die casting(GC) and squeeze casting(SC) T4-treated Al-7.0Zn-2.5Mg-2.1Cu alloys were employed to investigate the microstructures,mechanical properties and low cycle fatigue(LCF) behavior.The results show that mechanical properties of SC specimens are significantly better than those of GC specimens due to less cast defects and smaller secondary dendrite arm spacing(SDAS).Excellent fatigue properties are obtained for the SC alloy compared with the GC alloy.GC and SC alloys both exhibit cyclic stabilization at low total strain amplitudes(less than 0.4%) and cyclic hardening at higher total strain amplitudes.The degree of cyclic hardening of SC samples is greater than that of GC samples.Fatigue cracks of GC samples dominantly initiate from shrinkage porosities and are easy to propagate along them,while the crack initiation sites for SC samples are slip bands,eutectic phases and inclusions at or near the free surface. 展开更多
关键词 Al-Zn-Mg-Cu alloy squeeze casting gravity die casting microstructure mechanical properties low cycle fatigue
下载PDF
“新理念荟萃”还是“伪科学集腋”?——德国音乐期刊《序列》(die Reihe)探赜
18
作者 沈伟 《黄钟(武汉音乐学院学报)》 北大核心 2023年第4期54-63,164,共11页
《序列》(dieReihe)是20世纪五六十年代具有国际影响力的德语音乐学术期刊。该刊汇集了20世纪中叶西方诸多杰出作曲家、音乐理论家与科学家的亲笔文稿,具有重要研究意义和价值。1957年《序列》英文版发行以降,引起了西方音乐界和科学界... 《序列》(dieReihe)是20世纪五六十年代具有国际影响力的德语音乐学术期刊。该刊汇集了20世纪中叶西方诸多杰出作曲家、音乐理论家与科学家的亲笔文稿,具有重要研究意义和价值。1957年《序列》英文版发行以降,引起了西方音乐界和科学界的广泛热议,其中包含许多针对《序列》“伪科学”性质的批评与指责。虽然《序列》存在行文晦涩、概念误用、英文错译与欠乏规范等问题,但该刊凝聚了鲜明的前沿意识以及丰富而深刻的理论洞见,其价值及意义无可非议。 展开更多
关键词 序列 德国音乐期刊 艾默特 施托克豪森 音乐理念
下载PDF
Oxide distribution and microstructure in welding zones from porthole die extrusion 被引量:4
19
作者 张新明 冯迪 +1 位作者 史兴宽 刘胜胆 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第3期765-772,共8页
The oxide distribution and microstructure in longitudinal and transverse welding zones during the billet-to-billet extrusion process through porthole die were adequately investigated by means of finite element method,... The oxide distribution and microstructure in longitudinal and transverse welding zones during the billet-to-billet extrusion process through porthole die were adequately investigated by means of finite element method,scanning electron microscopy and optical microscopy.The results indicate that the oxides exist at the interface between the matrix and transverse welding zone rather than longitudinal welding seam.The longitudinal welding zone reveals a darker band including the largest grain with irregular shape due to the abnormal grain growth under the heavy shear deformation and high temperature.The transverse welding zone consists of equiaxed recrystallized grains which are a little finer than those in the longitudinal welding seam. 展开更多
关键词 porthole die extrusion welding oxide distribution welding microstructure
下载PDF
Extrusion force analysis of aluminum pipe fabricated by CASTEX using expansion combination die 被引量:2
20
作者 曹富荣 温景林 +3 位作者 丁桦 王昭东 于传平 夏飞 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第11期3621-3631,共11页
To determine the extrusion force of pipe fabricated by continuous casting and extrusion (CASTEX) using an expansion combination die, the metallic expansion combination die was divided into diversion zone, expansion zo... To determine the extrusion force of pipe fabricated by continuous casting and extrusion (CASTEX) using an expansion combination die, the metallic expansion combination die was divided into diversion zone, expansion zone, flow dividing zone, welding chamber, and sizing zone, and the corresponding stress formulae in various zones were established using the slab method. The deformation zones of CASTEX groove were divided into liquid and semisolid zone, solid primary gripping zone, and solid gripping zone, and the formulae of pipe extrusion forces were established. Experiments were carried out on the self-designed CASTEX machine to obtain the aluminum pipe and measure its extrusion force using the expansion combination die. The experimental results of radial extrusion force for aluminum pipe are in good agreement with the calculated ones. 展开更多
关键词 continuous casting and extrusion continuous extrusion expansion combination die aluminum pipe stress analysis extrusion force
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部