最新刊期
卷 33 ， 期 7 ， 2013
- 摘要：The damping capacity of several high strength magnesium alloys, such as AZ91D, ZK51 （Mg-5Zn-Zr）, WE43, NZ30K （Mg-3Nd-0.2Zn-Zr）, GW103K （Mg-10Gd-3Y-Zr）, GW83K （Mg-8Gd-3Y-Zr）, was examined. The results indicate that the specific damping capacity P0.1 （2π·tanφ） of these magnesium alloys under 10% yield strength stress is in range of 4.71% 8.55%, belonging to medium-damping materials. Based on the average value of P0.1, the specific damping capacity of these high strength magnesium alloys is in following order: WE43 <ZK51 <GW103K <AZ91D <GW83K <NZ30K. According to the strain-damping capacity curves, the peak-aging treatment after solution treatment （T6） often reduce the damping capacity of these high strength magnesium alloys, while over aging treatment at high temperature can improve their damping capacity. The reduced damping capacity led by peak-aging treatment maybe related to fine precipitates, while the improved damping capacity by over aging treatment maybe attributed to the coarsening of the precipitates.关键词：Magnesium Alloy;Damping Capacity;NZ30K;GW103K;GW83K
- 2
- |
- 627
- |
- 11
发布时间：2023-12-18 - 摘要：In order to improve the computing power of the phase field modeling, the quad tree technology is introduced to the mesh system of the phase field method to build the self-adaptive mesh method. Microstructure simulation of aluminum alloy based on 2-dimension isothermal solidification was conducted by the modified method, and the simulated results are well in agreement with the empirical simulation and experimental ones. In addition, by comparative with the results using the uniform mesh, when the solidification time is 7.5×10-5 s, the number of the mesh cells is reduced to 1.74% of uniform mesh. The results reveal that the phase field method based on the quad tree can enhance greatly the computing ability of the phase method with the same calculation accuracy.关键词：Quad Tree;Al Alloys;Solidification Microstructure;Numerical Simulation
- 2
- |
- 99
- |
- 3
发布时间：2023-12-18 -
Effects of Sb and Te Compound Modification on Microstructure and Mechanical Properties of A357 Alloy
摘要：Effects of Sb and Te compound modification on microstructure and mechanical properties of A357 alloy were investigated by using OM （optical microscopy）, SEM （scanning electron microscopy）, EDS （energy dispersive spectrometer） and tensile test. The results show that with the increase of Te addition, the tensile strength and elongation of the alloy are increased, and the size of the α -Al phase becomes much finer. In addition the morphology of the eutectic Si is changed from flake, needlelike shape to fine fibre shape and finally to granular shape. With 0.2%Te addition, the tensile strength and elongation reach the maximum value, and the morphology of the eutectic Si becomes granular shape with finer size of the α -Al phase. However, with Te addition more than 0.2%, the mechanical properties of the alloy are deteriorated, where the tensile strength and elongation are decreased, and the size of the α -Al phase and Si phase are coarsened.关键词：A357 Alloy;Compound Modification;Mechanical Properties;Microstructure- 2
- |
- 116
- |
- 1
发布时间：2023-12-18 - 摘要：Friction stir welding of AZ31B magnesium alloy with 4 mm in thickness and Q235 steel was conducted. The microstructure and distribution of elements in various interface position between magnesium and steel in thick direction were analyzed by metallographic analysis、SEM （scanning electron microscope）、EDS and EPMA. In addition, effects of process parameters on mechanical properties of the joint were investigated. The results show that magnesium and steel exhibit metallurgical bonding, and the interface between welding nugget and steel presents shape "C". The interface shape is changed from irregular to straight line along the sheet thickness direction from the welding nugget top to bottom. There exists a transition region in the side of steel, which contains both Fe and Mg. With the welding speed of 60 mm/min, the tensile strength is increased firstly and then decreased with the increase of rotary speed. The maximum tensile strength reaches to 176.5 MPa when the rotary speed is 600 r/min, which reaches to 67.9% of strength of the base metal AZ31B. The tensile strength in the middle region of the joint is bigger than that in the top and the bottom region, which reaches about 195.9MPa and 75.3% of strength of the base metal AZ31B.关键词：Frictional Stir Welding;Magnesium Alloy;Steel;Interface;Mechanical Properties
- 2
- |
- 289
- |
- 4
发布时间：2023-12-18 - 摘要：The disadvantages of traditional modulazation design for large-scale vertical centrifugal casting were analyzed. A new design method was introduced. Multi-step round-cavity groove position was adopted in designing chassis of centrifugal machine. The combination mould design of general backing plate, general cover plate and special metal sleeve was conduced with the design of general serial flower-shaped plate and bolt locking, which improved greatly the re-utilization rate of backing plate, cover plate and coordinate locking mechanism, decreased comprehensive cost of mould by 40% and shortened greatly the production period.关键词：Vertical Centrifugal Casting;Large-Scale Mould;Generalization;Seriation;Combination
- 2
- |
- 111
- |
- 2
发布时间：2023-12-18 - 摘要：Through an analysis of process requirements in specifications of titanium alloy castings （Ti-6Al-4V） which were selected from both at home and abroad, the differences and references among those specifications were investigated systematically. The vesults show that the domestic master heat can use revert materials as abroad to reduce cost. The differences among chemical components were focused on the elements of Al, H, Si. Especially the foreign specifications of aircraft engineering claimed more severe upper limit for Si and Y elements. After comparing mechanical properties, it is found that the ultimate tensile strength （UTS）, yield strength （YS） of domestic standards are 30 MPa, 4875 MPa higher than the requirements of Snecma and GE, respectively. The facts suggest domestic specification to reduce the strength requirements. The domestic applicable feature thickness range for ASTM E192 reference plate needed to conform to standards abroad. ASTM E1320 reference radiographs for titanium castings should be popularized to titanium castings as X-ray inspection standards.关键词：Specification;Ti-6Al-4V Titanium Alloys;Chemical Composition;Mechanical Properties
- 2
- |
- 343
- |
- 2
发布时间：2023-12-18 - 摘要：Effects of ball milling parameters （rotating speed, milling time, ratio of milling ball） on the particle size and the microstructure morphology of Al-7Si-1Mg alloy powder were investigated. The results indicate that there are difference for the semi-solid microstructure of milled Al-7Si-1Mg alloy powder. The optimized ball milling parameters by orthogonal experiment were presented as follows: rotating speed of 100 r/min, milling time of 30 min, ratio of milling ball 5∶1. A quantity of the milled alloy powder was pressed into cold-pressed consolidation specimen for partial remelting. The semi-solid microstructure with small and spheroidized α-Al particles uniformly suspended in liquid phase can be observed during partial remelting. With increasing in remelting time, α-Al particles are coarsened seriously.关键词：Al-7Si-1Mg Alloy Powder;Ball-milling;Semi-solid Microstructure;Partial Remelting
- 2
- |
- 146
- |
- 2
发布时间：2023-12-18 - 摘要：Semi-solid ZL203 aluminum alloy was prepared by low power ultrasonic melt processing-inclined plate compound preparation process, and influences of different process parameters on the microstructure and properties of semi-solid aluminum alloy were investigated by orthogonal testing. The results show that the fine and uniformly distributed microstructure containing mainly α-Al phase can be prepared by reasonable control of the process parameters. Preheating temperature of the mould is the most important factor controlling grain size, and ultrasonic vibrating temperature is dominant in affecting tensile strength. With the ultrasonic vibrating temperature of 660 ℃, and the preheating temperature of mold of 25 ℃ and inclined plate of 25 ℃, the microstructure and tensile strength of ZL203 aluminum alloy exhibit desirable.关键词：ZL203 Aluminum Alloy;Ultrasonic Melt Processing;Inclined Plate;Semi-solid
- 2
- |
- 132
- |
- 6
发布时间：2023-12-18 - 摘要：The semi-solid TiB2/6061 composites were prepared by low voltage pulsed magnetic field process, which was remelted partially at 600℃ for 5,10,20 and 30 min, respectively, and then was quenched in the water to reserve semi-solid structure. Finally, the effects of in-situ TiB2 particles on the microstructure of composites were investigated by the optical microscope and graphical analyzer. The experimental results show that in-situ TiB2 particles not only can obviously refine and spheroidize the as-cast microstructure of semi-solid TiB2/6061 composites, but also inhibit evidently grain growth by pinning effect during reheating. At the same conditions, the coarsening rate of the specimens with in-situ TiB2 particulates addition is significantly lower than that in the specimens without TiB2 particulates addition, exhibiting a higher thermal stability than the 6061 matrix alloy, and more suitable for semi-solid thixo-forming process.关键词：Low Voltage Pulsed Magnetic Field Process;In-Situ TiB2 Particle;6061 Matrix Alloy
- 2
- |
- 88
- |
- 0
发布时间：2023-12-18 - 摘要：The casting process of gray iron rotor bracket was simulated by the Anycasting software to visualize the possible location and origination of defects. On this basis, through three-dimensional modeling software adjusting the gating system, the riser, chills size and location as well as simulating the modified schemes, the optimized process was presented. The results show that oxidation inclusion in molten iron can be eliminated effectively by bottom pouring way into the casting cavity with the ceramic tube. To eliminate the shrinkage defects in the gray cast iron, according to the actual situation of the risers and chills, the chill is used to eliminate hot spot, and the riser is set nearby the hot spot to realize the sequential solidification, which is effective for eliminating partial shrinkage porosity.关键词：Anycasting Simulation;Shrinkage Defects;Gray Iron;Rotor Bracket
- 2
- |
- 138
- |
- 4
发布时间：2023-12-18 - 摘要：Aiming at the low efficiency of atomizer, gas flow was heated to improve atomization effects of liquid metal. The results reveal that through heating atomized gas flow, grain size in the liquid metal can be decreased greatly, which shows it is a effective way to improve atomizing effects by heating gas flow. Heating apparatus was set at gas channel of gas bottle to atomizer, and heating effects were simulated. The results indicate that with increasing in flow velocity, gas temperature and gas velocity are the function of temperature of channel end:V=0.32T+155.4.关键词：Gas Atomization;Gas Heating;Numerical Simulation
- 2
- |
- 128
- |
- 2
发布时间：2023-12-18 - 摘要：The application of inteCAST software in ductile iron housing was analyzed. With the help of CAE software, four kinds of processing design for the ductile iron housing were visualized to predict and analyze possible shrinkage holes （porosities）. The results show that, through optimizing process, shrinkage porosities （holes） in the ductile iron housing can be eliminated effectively.关键词：InteCAST;Ductile Iron;Casting Process Analysis
- 2
- |
- 67
- |
- 1
发布时间：2023-12-18 - 摘要：The semi-solid die casting die for box shell was designed and manufactured. By using Flow-3D software, the filling and solidification process of semi-solid rheological die-casting was simulated, and verification experiment was conducted. The results show that the temperature of die has the obvious effects on semi-solid die casting process. The optimized parameters for semi-solid die casting were presented as follows: injection velocity of 1 m/s, pre-heating temperature of mould at 260 ℃ and slurry temperature of 590 ℃.关键词：Semi-solid;Aluminum Alloy;Numerical Simulation;Box Shell
- 2
- |
- 110
- |
- 1
发布时间：2023-12-18 - 摘要：Design of low-pressure casting red copper crystallizer was conducted, focusing on sand core and gating system. Upper-core head length was increased, and sand core was set on the upper mold to be perpendicular to the core head, where core head height is 25 mm and 40 mm and oblique angle is 4° and 6°, respectively. Bottom-pouring shunt design was considered in gating system, which was beneficial for the smooth filling of liquid metal and the implementation of sequential solidification. Four round ingates with 23.6 mm in diameters were adopted.关键词：Red Copper Crystallizer;Low-pressure Casting;Sand Core;Gating System
- 2
- |
- 66
- |
- 1
发布时间：2023-12-18 - 摘要：A nonlinear predictive control algorithm was proposed for multivariable die-casting processes of die-casting machine based on chaos adaptive differential evolution model. In the adaptive differential evolution model, the tent map was embedded to improve the process of production of crossed factors and compile factor in the DE model. The simulation results show that the injection control PID controller with the intelligence algorithm can optimize the die-casting machine injection velocity and make the nonlinear predictive control possess good dynamic characteristics and high control precision to achieve the system optimal control objective in the end.关键词：Die-casting Machine;Chaos Differential Evolution;Nonlinear Predictive Control
- 2
- |
- 103
- |
- 1
发布时间：2023-12-18 - 摘要：Run-out and dispersed shrinkage defects often occur in investment castings with the long hole and narrow groove because of difficulty in coating and stuccoing operation for long hole and narrow groove. Some ways were presented including dipping slurry, inserting the batten in the long hole, keeping temperature in the partial shell, the ceramic core and the self-hardening core, which could eliminate effectively the problems in a certain extent. In addition, the ways mentioned have the advantages of convenient operation.关键词：Castings with Long Hole and Narrow Groove;Dipping Slurry;Ceramic Core;the Self-hardening Core
- 2
- |
- 129
- |
- 0
发布时间：2023-12-18 - 摘要：The structure characteristic of a typical housing for a plane system and the defects occurred in the process of production were described, and a compound method of rapid prototyping manufacturing conbining with investment casting were presented. The casting technology can improve the precision of housing, eliminating the defects in the housing, and decreasing the manufacturing time.关键词：Rapid Prototyping;Investment Casting;Housing
- 2
- |
- 156
- |
- 0
发布时间：2023-12-18 - 摘要：It is difficult to investment casting Monel alloy butterfly plate , and there exists high scrap rate. Different investment casting ways to produce the Monel alloy butterfly plate were analyzed comparatively. The horizontal pouring is suitable for DN250 butterfly plate, while vertical pouring is suitable for DN350 ones. Through designing reliable investment casting process, shrinkage porosities （holes） and gas holes in the Monel M30C alloy butterfly plate were eliminated effectively.关键词：Monel Alloy;Butterfly Plate;Investment Casting
- 2
- |
- 61
- |
- 0
发布时间：2023-12-18 - 摘要：Lead bronze bearing was produced by centrifugal casting. Based on the theory calculation and practical production, the processing parameters were presented as follows: pouring temperature of 1 000～1 050 ℃, the temperature out-mold of is 400 ℃ and the mould rotational velocity of 700 r/min. The results show that the spheroidization of Pb particles are well with distributed uniformly in the casting. Heat treatment results show that the tin sweat exists at edge of the casting under the condition of 450 ℃annealing and the hardness of casting is decreased with increasing in annealing temperature.关键词：Lead Bronze;Centrifugal Casting;Microstructure
- 2
- |
- 162
- |
- 3
发布时间：2023-12-18 - 摘要：Through modifying the design of back iron for head kiln to postpone the crack occurrence time and oxidation burning loss, service life of the back iron was improved obviously. EPC instead of sand casting was used to produce back iron, which could improve greatly efficiency and quality, decreasing the cost.关键词：Back Iron for Head Kiln;Crack;Burning Loss;EPC
- 2
- |
- 43
- |
- 0
发布时间：2023-12-18 - 摘要：Compared with conventional slab caster machine, surface scratch more easily occurs on the mould of CSP caster from Jiuquan iron & steel group , and serious scratch on the surface can affect surface quality of the slab directly, and even led to production accidents, such as steel- leakage, etc. The reasons of surface scratch on copper plate at narrow face of mould were analyzed . By improving the structure of copper plates at narrow-face and increasing the number of cooling holes, cooling effects of cooper plates in mould were improved, and surface scratch of copper plates was eliminated completely. Finally, steel-leakage accidents were prevented in CSP caster.关键词：Caster;Mould;Copper Plate
- 2
- |
- 91
- |
- 1
发布时间：2023-12-18 - 摘要：By testing the mechanical properties of cold rolled and annealed samples, the influences of cold rolling and annealing on mechanical properties of composite ingot of 4004/3003 aluminum alloy were analyzed, and the optimized cold rolling and annealing process parameters were presented. The dispersion-strengthened is gradually weakened with the first pass deformation increases, resulting in the decrease of strength. However, the strength is enhanced by increasing the deformation further to 60% as a result of working hardening, however, the heterogeneous distribution of the second phase in the microstructure of the compound ingot can be observed. The tensile tests of the annealed samples of composite plate show that due to recovery and recrystallization, the strength of the annealed plate is decreased and the plasticity is increased. Considering the comprehensive mechanical properties of plate, the optimized annealing process is 360 ℃ for one hour.关键词：Cold Rolling;Compound Aluminum Alloy;Mechanical Properties;Annealing
- 2
- |
- 246
- |
- 4
发布时间：2023-12-18 - 摘要：Effects of carbon steel surface treatment and pre-heating temperature on solid-liquid compound interface structure and performance of the Q235 / ZL109 were investigated. The results show that the surface wettability of ZL109/Q235 can be effectively improved by the surface treatment on the Q235 steel substrate. The Ni-Cu plating surface treatment can significantly improve the wettability of the bi-metallic samples and prevent from the secondary oxidation. The compound interface of the Q235 （700 ℃）/ZL109 （730 ℃） exhibits metallurgical bonding, which is composed of FeAl3, Fe2Al5 intermetallic compounds ,and the thickness of bonding layer can be controlled in range of 15 μm to 28 μm, significantly improving the shear strength of compound interface.关键词：Q235 Steel;ZL109 Aluminum Alloy;Liquid-Solid Compound;Interface Microstructure
- 2
- |
- 120
- |
- 2
发布时间：2023-12-18 - 摘要：SiC/A356 composites were prepared by mechanical stirring and by ultrasonic stirring method, and processing parameters of mechanical stirring and ultrasonic stirring were presented. Microstructure, hardness and wear resistance of the SiC/A356 composite prepared by mechanical stirring and by ultrasonic stirring were investigated by SEM （scanning electron microscopy） and Brinell’s machine and friction and wear test machine. The results indicate that there exists slight interface reaction in the composites prepared by mechanical stirring, while the uniform fine and compact structure can be observed in one prepared by ultrasonic stirring. With SiC size in 23 μm, compared to those of one prepared by mechanical stirring, the hardness and wear resistance of SiC/A356 composites are improved by 22% and by 56%, respectively.关键词：SiC Particle;SiC/A356 Composite;Ultrasonic Stirring Method;Preparation Technology
- 2
- |
- 294
- |
- 2
发布时间：2023-12-18 - 摘要：Effects of varied Ce addition, such as 0. 0.05% ,0.15%, 0.25% in weight, on microstructure and wear resistance of Cu-Al-Ni-Fe-Mn aluminum bronze were investigated by OM （optical microscopy）, SEM （scanning electron microscopy） and M-2000-type abrasion tester. The results indicate that the addition of proper Ce content can effectively refine the microstructure and improve the tensile strength, ductility and wear resistance. With 0.15% Ce addition, fine and round grain with uniform distribution can be observed in the Cu-Al-Ni-Fe-Mn alloy, and desirable wear resistance can be obtained. However, with 0.20% Ce addition, the polygonal and lamellar structure are increased in the alloy with the coarseness of grain boundary, leading to the deterioration of wear resistance of the alloy materials.关键词：Cu-Al-Ni-Fe-Mn Aluminum Bronze;Rare Earth Cerium;Microstructure;Wear Resistance
- 2
- |
- 170
- |
- 2
发布时间：2023-12-18 - 摘要：Influences of transverse DC static magnetic field on microstructure of Zn-35Al-2.5Cu-1.5Ti alloy were investigated by modified self-developed horizontal Bridgman directional solidification device. Influences of the magnetic field on the microstructure of the zinc alloy were investigated by observing the microstructure and its quantitative characterization. The results show that with increasing in magnetic induction intensity, the microstructure in the directional solidified Zn alloy is coarsened, which is attributed to the Thermo-Electric MagnetoHydroDynamic （TEMHD） effect generated from the presence of a magnetic field promoting the melt flow in the liquid-solid interface mushy zone and atomic migration. With increasing in drawing velocity, the microstructure is refined as a result of fading of TEMHD. The microstructure in zinc alloy becomes coarse seriously with the magnetic induction intensity of 0.2 T and drawing velocity of 30 μm/s. Compared with the absence of magnetic field, the first arm and the second arm spacing are increased by 44.9% and by 52.2%, respectively.关键词：Directional Solidification;Microstructure;TEMHD Effect;Microstructure Coarseness;Zinc Alloy
- 2
- |
- 130
- |
- 2
发布时间：2023-12-18 - 摘要：A novel lead-free and easy-cutting aluminum alloy was developed by adding trace elements in the commericial 6063 alloy. The experimental results show that both the plasticity and strength of the new aluminum alloy prepared have been improved obviously with good machinability. Meanwhile, pollution and cost were decreased.
- 2
- |
- 84
- |
- 2
发布时间：2023-12-18 - 摘要：Three series of Al-Si-Cu-Mg phase-change thermal storage aluminum alloy materials with different components were prepared based on Al-Si alloy through optimizing design. With the help of X-ray diffraction （XRD）, scanning electron microscope （SEM） and differential scanning calorimetry （DSC）, the microstructure, density, phase change temperature and the thermal storage properties of these materials were investigated. The results indicate that the phase transformation temperature of the alloys prepared is in the range of 500 ℃ 650 ℃ with the latent heat higher than 300 J·g-1. The Al-13Si alloy has the higher heat storage per unit mass, and the Al-Si-Cu-Mg alloys have the higher heat storage per unit volume. Mg element can be used to enlarge the thermal storage temperature range due to remarkably reducing the phase transition temperature. Cu element can increase the density of the thermal storage materials, which is responsible for better thermal storage properties per unit volume.关键词：Phase Transformation Thermal Storage Materials;Aluminum Alloy;Thermal Storage Properties
- 2
- |
- 193
- |
- 1
发布时间：2023-12-18 - 摘要：Through orthogonal experiment for ZL101A, four factors influencing the process of rotary impeller degassing,such as rotation speed, flux of argon, refining temperature and degassing time were examined, and the influencing sequence on rotary impeller degassing efficiency was presented as follows: rotation speed, flux of argon, refining temperature and degassing time. The optimized processing parameters were presented as follows: rotational speed of 300 r·min-1, the flux about 3.5 L·min-1, and degassing time of 15 minutes at 700 ℃.关键词：Rotary Impeller Degassing Method;Refining;Aluminum Alloy
- 2
- |
- 181
- |
- 2
发布时间：2023-12-18 - 摘要：<正>宝钿菱花镜（见下页）[1]唐代（公元618～907年）直径8.8cm,质量201g高锡青铜,镶嵌金片珠宝日本千石唯司藏以金丝编纹样轮廓,焊接到器壁,再镶嵌饰物,称为宝钿。若在纹样边缘一周再焊上细小金珠,则称为"金筐。"
- 2
- |
- 143
- |
- 1
发布时间：2023-12-18 - 摘要：<正>北卡罗来纳州立大学的研究人员近日开发出一种新的技术,能够制造出用于商用车车架或汽车面板的高强度镁合金。镁合金通过热轧法实现晶体层的堆垛层错现象（stacking faults）,产生的效果是镁合金的屈服强度（yield strength）达到575兆帕,极限强度（ultimate strength）达到600兆帕,塑性等级为中（5.2%均匀伸长率）。
- 2
- |
- 74
- |
- 0
发布时间：2023-12-18 - 摘要：<正>云南曲靖经济技术开发区在南亚博览会上成功签约5个上亿元项目,计划总投资约78.7亿元。项目涉及绿色经济、科技研发、综合商贸等领域。据国际模协秘书长罗百辉透露,精密注塑加工及模具研发制造项目,计划投资780万美元,租用开发区标准厂房约1775m2,进行精密注塑加工及模具研发制造,项目建成后预计年产值可达2000万元人民币。
- 2
- |
- 18
- |
- 0
发布时间：2023-12-18 - 摘要：<正>面对经济环境复杂多变的不利影响,新兴际华集团铸管股份公司（000778）以"225"管理创新体系为抓手,坚持"以我为主"信息化建设方针,大力推进大数据课题建设,实现信息化和工业化深度融合,为推动公司科学发展奠定了坚实基础。从短板出发提升企业竞争力在推进"225"管理创新体系过程中,新兴铸管股份公司结合发现的短板问题,积极探索利用信息化手段提升管理水平,通过
- 2
- |
- 71
- |
- 0
发布时间：2023-12-18 - 摘要：<正>亚新科国际铸造位于运城绛县经济开发区内为了打造"铸造航母"开发区帮助企业继续扩建,上马5.5万吨大马力发动机铸件项目,专门投资5000万元建设了全省首座11万伏智能变电站解决用电难题。亚新科国际铸造（山西）有限公司的每度电比
- 2
- |
- 22
- |
- 0
发布时间：2023-12-18 - 摘要：<正>目前世界各大行业都在向专业化方向靠拢,铸造产业也不例外。生产专业化能集中同类产品,组织大批量生产采用先进的专用设备和工艺,工人、工程技术人员和管理人员各有专长,有利于提高劳动生产率和管理水平,有利于更快地发展新产品,提高产品质量和降低成本。
- 2
- |
- 25
- |
- 0
发布时间：2023-12-18 - 摘要：<正>"中国铸造之城"河北泊头推广节能环保低碳铸造技术,着力打造绿色铸造基地。目前,年铸造设计生产能力达400多万吨,其中实型铸件制造占全国产量的一半以上,产品出口欧美、非洲30多个国家和地区。
- 2
- |
- 34
- |
- 0
发布时间：2023-12-18 - 摘要：<正>中国铸造协会针对铸件清理设备的选型、使用及养护,定于2012年9月12～13日在河北省保定市召开"铸件清理设备与应用技术交流会",旨在通过铸件清理设备上下游企业互动,推动铸造企业正确、高效使用清理设备,以创造
- 2
- |
- 22
- |
- 0
发布时间：2023-12-18 - 摘要：<正>河北春风实业集团圣春冀暖散热器有限公司与济南铸造研究所、哈尔滨工业大学合作,历时三年研发成功的亚洲第一条铸铁散热器大型自动化铸造流水线正式投入使用。散热器铸造是冀州市三大战略支撑产业之一。做为采暖行业的龙头,圣春冀暖散热器有限公司是我国建厂最早、
- 2
- |
- 28
- |
- 0
发布时间：2023-12-18 - 摘要：<正>为加强行业管理,促进铸造行业节能减排和转型升级,推进铸造行业健康有序协调发展,更好地为装备制造业服务,工业和信息化部部制定了《铸造行业准入条件》,共分11个部分。一、建设条件和布局规定铸造企业的布局及厂址的确定应符合国家产业政策和相关法律法规,符合各省、自治区、直辖市铸造业和装备制造业发展规划。
- 2
- |
- 29
- |
- 1
发布时间：2023-12-18 - 摘要：<正>自1983年全国模具标准化技术委员会成立以来,组织专家对模具标准进行制定、修订和审查,共发布了90多项标准。这些标准的发布、实施,推动了模具行业的技术进步和发展,产生了很大的社会效益和经济效益。模具标准件的研究、开发和生产正在全面深入展开,无论是产品类型品种、规格,还是产品的技术性能和质量水平都有明显的提高。
- 2
- |
- 43
- |
- 1
发布时间：2023-12-18 - 摘要：<正>我国的铸件产量稳坐世界冠军宝座十余年。然而,相关专家表示,未来我国铸件的产量增速将大幅放缓。据了解,从2012年下半年起,下游行业对铸件的需求结构就有了明显的变化,国内机床、工程机械、商用车、柴油内燃机、小型拖拉机、汽轮发电机、风电等下游领域对铸件的需求有
- 2
- |
- 48
- |
- 0
发布时间：2023-12-18
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0