最新刊期
卷 29 ， 期 4 ， 2009
-
-
-
-
-
-
- 摘要：The characteristics of macro-and microstructure of cast Ti-46Al-xHf-yB （x=0, 3,5, 7; y=0, 0.2, 0.6, 1.0） alloys were observed to understand the coupling effects of hafnium and boron additions on the solidification structure evolution in the Ti-46Al alloy. The results reveal that with increasing in Hf and B contents, structure morphology of the alloy is converted from coarse columnar to fine columnar dendrite, then to equiaxed dendrite and further to fine near granular grain. Hafnium content can promote the formation of TiB2 particles, resulting in the motion-down of β-Ti/TiB2 eutectic line. With Hf content less than 7%, microstructure of the alloy is composed of primary β phase and eutectic phase TiB2 with ribbon-like shape mainly existing in the interdendrite, while with 7%Hf and 1% B content, primary phase TiB2 with needle-like shape existing in near granular grain center can be observed in the microstructure.关键词：Hafnium;Boron;Coupling Effects;Solidification;TiB2
- 2
- |
- 118
- |
- 2
发布时间：2023-12-18 - 摘要：Near-net-shape SiCp/A356 composites baseplate was successfully prepared with SiCp preform by pressureless infiltration method. Bonding mechanism of sintered SiC preform, and effects of infiltration temperature and infiltration time on the relative density of the composites were approached. Meanwhile, properties of the composites baseplate were tested. The results reveal that SiO2 phase generated on the surface layer of sintered SiC is responsible for the bonding role in SiC porous preform. Relative density of the composites baseplate is increased with increasing in infiltration temperature and infiltration time. Thermal expansion coefficient and thermal conductivity of the composites baseplate vary at （11.1512.46）×10-6 K-1 and at 110.00194.282W/（m·K）, respectively, at 50200℃. The ambient bending strength of the composites baseplate reaches 210.8MPa.关键词：Aluminum Matrix Composites;SiCp Preform;Pressureless Infiltration;Thermo-physical Properties;Bending Strength
- 2
- |
- 175
- |
- 2
发布时间：2023-12-18 - 摘要：Effects of Sn and Bi addition on cutting performance of Al-Mg-Si alloy were investigated by comparing the chipping shape, surface roughness and tangle cutter condition in process of cutting of three kinds of Al-Mg-Si-（Sn, Bi） alloys. The existing forms of Sn and Bi in the Al-Mg-Si alloys were observed to understand their ralein cutting performance of alloy by XRD （X-ray diffraction） and SEM （scanning electron microscope）. The results reveal that formed Mg2Sn, Mg3Bi or Sn phase in Al-Mg-Si alloy can result in the brittle crack of chip as a result of softening during high speed cutting process, while they can form cavity or crack to result in chip fracture due to deformed rate different from matrix during low velocity cutting process, improving the cutting performance of the alloy. In addition, cutting performance of Al-Mg-Si alloy with mixed Sn and Bi addition is superior to that of ones with only Sn or Bi addition.关键词：Free-cutting Al Alloy;Al-Mg-Si Alloy;Cutting Performance
- 2
- |
- 132
- |
- 1
发布时间：2023-12-18 -
-
-
-
-
-
-
-
-
-
-
-
-
- 摘要：In order to improve the corrosion resistance and biocompatibility of the magnesium alloy for biomaterials application, hydroxypatite coating with the biology activity on AZ91D Mg alloy was prepared by laser cladding method. The results show that prepared coating exhibits desirable bonding with magnesium alloy substrate, and microstructure of the exhibits is the compact cellar grain, and it is composed of Mg, HA, CaH2P2O7 and CaH4（PO3）2H2O, in which atomic ratio of Ca via P is 1.73, closing to theoretical value of 1.67, so the biological activity of the coating exhibits improved significantly. In addition, controlling dilution of magnesium plays a key role in the preparation of the coating.关键词：Biomaterial Magnesium Alloy;Laser Cladding;Hydroxypatite;Biocompatibility
- 2
- |
- 600
- |
- 8
发布时间：2023-12-18 - 摘要：Chemical conversion coating with chrome free was prepared on surface of AZ91D magnesium alloy in phophate-permaganate-pH value additive solution. Forming mechanism of the conversion coating was observed by XRD （X-ray diffraction） and SEM （scanning electron microscope）. The results shows that the chemical conversion coating exhibits amorphous structure with uniformly distributed composition in the surface, and the reticular crackle which is helpful for improving adhesive ability of coating can be observed. EDS and XPS analysis shows that the chemical conversion coating is composed of MgO, Mg（OH）2, MgAl2O4, Al2O3, Al（OH）3 and MnO2 phase. The corrosion resistance of the chemical conversion coating with chrome free is obviously superior to that of the others in 3.5%NaCl solution.关键词：Chemical Conversion;Magnesium Alloy;Corrosion Resistance
- 2
- |
- 259
- |
- 6
发布时间：2023-12-18 - 摘要：Solidification structure of Zn-3.5Mg alloy for hot-dipping galvanizing under different cooling conditions, such as furnace cooling, air cooling and water cooling, were observed by SEM （scanning electron microscope）, EDS（energy dispersive spectrum） and XRD （X-ray diffraction）. The results indicate that with the increase of cooling rate, （1） the peritectic reaction of γ-MgZn2 +L→β-Mg2Zn11 of intermetallic compound particles precipitated from the primary eutectic reaction is restrained gradually, resulting in the creation of β-Mg2Zn11 intermetalic compound phase in furnace cooling, γ-MgZn2 phase enwrapped by β-Mg2Zn11 phase in air cooling and γ-MgZn2 phase in water cooling. （2） amount of the equilibrium eutectic phase α-Zn +β-Mg2Zn11 is reduced, while amount of the non-equilibrium eutectic Zn+γ-MgZn2 phase is increased. （3） both the primary eutectic intermetallic compound particles and eutectic structure can be refined. Meanwhile, the width of the particles and eutectic spacing have a certain relation with cooling rate.关键词：Zn-Mg Alloy;Hot-dipping Galvanizing;Solidification Microstructure
- 2
- |
- 172
- |
- 1
发布时间：2023-12-18 - 摘要：Ni-CeO2 nanocomposites were prepared by pulse electrodeposition in an ultrasonic field. Effects of processing parameters, such as concentration of CeO2 nano-particles in the electrolyte, pulse average current density, pulse duty cycle, pulse frequency, ultrasonic frequency and power as well as stirring rate, on CeO2 nano-particles content in the Ni-CeO2 nano-composites were evaluated by orthogonal experiment. The surface morphology and microstructure and micro-hardness of Ni-CeO2 nano-composites were also analyzed. The results show that co-deposited CeO2 content in the composites is markedly affected by the CeO2 particle concentration in the electrolyte. The Ni-CeO2 nanocomposites with high micro-hardness can be prepared by means of cavitation effects of ultrasonic wave and selecting suitable processing parameters of pulse electrodeposition, in which uniformly distributed disperoids can be observed.关键词：Ultrasonic Wave;Pulse Electrodeposition;Nanocomposites;CeO2 Nano-particle
- 2
- |
- 288
- |
- 1
发布时间：2023-12-18 - 摘要：AZ91D magnesium alloy met the ASTM standard was directly prepared from the crude magnesium by melting, alloying and refining the magnesium in line-frequency coreless induction furnace and then holding purification in electric resistant furnace. The effects of ignition proof during melting process, impurities removal and purification as well as temperature control on quality of magnesium alloy were described to optimize smelting-casting parameters of AZ91D alloy directly prepared from crude magnesium. The experimental results verify that the method of directly smelting-casting magnesium alloy from crude magnesium have some advantages, such as easy parameters controlling, short technological process, low loss of metal elements, low energy consumption and environmental pollution, high production efficiency and high product quality as well as low cost.关键词：Crude Magnesium;Smelting-casting;Magnesium Alloy
- 2
- |
- 181
- |
- 11
发布时间：2023-12-18 - 摘要：Aiming at solving problems of great difference in temperature in ESC steel ingot different position easily resulting in the thermal stress and of difficulty to measure, effects of electric currents on stress field in ESC steel ingot were predicted by means of finite element analysis software ANSYS. It is found that equivalent stress and axial stress distribution from top to bottom surface of the ESC steel ingot are submitted to basic logarithmic relation in axial direction at varied currents. The simulated results are well in agreement with experimental ones, showing that the model can be employed for predicting the stress field in the ESC steel ingot in practical production.关键词：ESC;Stress Field;Current;Numerical Simulation
- 2
- |
- 158
- |
- 1
发布时间：2023-12-18 - 摘要：High temperature heat pipe, as a kind of high efficiency heat transfer unit, was widely used in mould industry because of its excellent thermal conductivity performance. Based on heat transfer characteristics of high temperature heat pipe, application of the heat pipe in cooling mould for gyro knife was simulated by means of the ANSYS software. The results indicate that the high temperature heat pipe can be used for cooling the mould.关键词：High Temperature Heat Pipe;Gyro Knife;Mould
- 2
- |
- 90
- |
- 2
发布时间：2023-12-18 - 摘要：The flow field and temperature field in the tuyere of BF were simulated by means of CFD （calculated flow dynamics） to understand the effects of the inlet hydraulic pressure and impurities on the surface temperature distribution of BF aiming at the key damaged factors in the BF. The results reveal that with inlet hydraulic pressure less than 0.4MPa, the highest surface temperature of the BF can be greatly decreased with increasing in hydraulic pressure, while with inlet hydraulic pressure more than 0.4MPa, it is slowly decreased with increasing in the hydraulic pressure, however, it can be obviously declined with improving the purity rate of the tuyere.关键词：Turyere of Blast Furnace;Temperature Field;Flow Field;Inlet Hydraulic Pressure
- 2
- |
- 758
- |
- 3
发布时间：2023-12-18 - 摘要：Mechanism of grain nucleation and detachment on chilling metal surface by vibration was examined using NH4Cl-70H2O analogue alloy. Experimental results reveal that acceleration can be used as the evaluation criteria of grain detachment under a fixed frequency. Effects of grain detachment were enhanced with increasing in acceleration. However, it should be noted that, at a constant vibration acceleration, grain detachment was restrained with the increase of vibration frequency. A vibration dynamic model was proposed to describe the effects of vibration parameters on the grain detachment behavior, which shows that the frequency response curve is determined by the co-action of viscous drag force with sympathetic vibration effects.关键词：Vibration and Chilling;Grain Detachment;NH4Cl-70H2O Analogue Alloy;Frequency Response Characteristics
- 2
- |
- 149
- |
- 2
发布时间：2023-12-18 - 摘要：Semi-solid thixo-forming of in-situ reactive spray formed TiCp/7075 aluminum matrix composites was carried out. Thixoformability of in-situ reactive spray formed TiCp/7075 aluminum matrix composites, and microstructure and mechanical properties of the thixoformed products were investigated. It is found that the composites exhibit desirable semi-solid thixoformability, which can be performed semi-solid thixoforming with pressure at 2025 MPa. Uniformly distributed equiaxed grain in the microstructure with average grain size in 3040 μm can be still observed with semi-solid thixo-forming at 625 ℃. The hardness of the thixoformed composites reaches 8285HRB after T6 heat treatment.关键词：Semi-solid Thixoforming;In-situ Reactive Spray Formation;TiCp/7075 Aluminum Matrix Composites
- 2
- |
- 138
- |
- 0
发布时间：2023-12-18 - 摘要：Semi-solid slurry was prepared by pouring A356 superheated melt with different temperature with electromagnetic stirring into a hot mold at 550℃. Microstructure of the prepared slurry was observed by OM （ optical microscope） and Image-Pro Plus software to understand the solidification behavior of aluminum alloy A356 superheated melt during pouring process. The results indicate that primary α-Al phase exhibits developed dendritic structure in the slurry with pouring at 710 ℃ as a result of low nucleation rate. Primary phase is converted gradually from dendrite into non-dendrite with pouring at 670 ℃ due to the great increase of effective nucleation rate in the melt. Microstructure with about 60% non-dendrite in the primary phase can be obtained with pouring at 630 ℃, in which non-dendrite with about 30 μm in size and 1.35 in roundness can be observed.关键词：Hot Mold Pouring;Electromagnetic Stirring;A356 Alloy;Semi-solid
- 2
- |
- 164
- |
- 3
发布时间：2023-12-18 - 摘要：Effects of holding time and temperature on the microstructure and size as well as morphology of primary phase in AM60B alloy during semi-solid isothermal treatment process were investigated. The results show that during semi-solid isothermal treatment, eutectic phase with net-like structure is prior to be melt, and then α phase is melt and separated to that to convert into globular particles with increasing in holding time. However, spheroidal particle can be coalesced with further increasing in holding time, where coalescence of the grain becomes more and more serious with increasing in holding temperature. The experimental results reveal that spheroidized non-dendrite phase in the AM60B alloy can be observed with isothermal treatment at 595℃ for 6075 min. Two-steps techniques can promote the formation of non-dendritic structure and contribute to get more and fine non-dendrite .关键词：AM60B Magnesium Alloy;Semi-solid;Isothermal Treatment;Spherical Structure
- 2
- |
- 190
- |
- 5
发布时间：2023-12-18 - 摘要：Forming conception of liquid metal by punching-casting and forming process of bimetal were described. Forming effects of punching-casting Pb-Sn bronze on the 45# steel billet were observed. The results indicate that the punching-casting forming for liquid metal is the forming process of combining casting with punching, in which bonding interface exhibits better solidification binding and mechanical inlaying by co-action of solidification and somewhat plastic deformation, so one metal can be uniformly and firmly cladded on the other metal with some thickness. The characteristics of punching-casting for liquid metal was described.关键词：Punching-casting;Bonding Surface;Forming Process;Forming Mechanism
- 2
- |
- 155
- |
- 6
发布时间：2023-12-18 - 摘要：Effects of Nd contents on microstructure and properties of die casting AZ91D alloy were investigated. It is found that mechanical properties of the AZ91D alloy at room temperature, which is closely dependent on the shrinkage porosity and impurity in the matrix, are slightly improved with a little Nd addition. However, elevated mechanical properties of the AZ91D alloy are greatly increased with a little Nd addition, which is attributed to formed Mg12Nd phase restraining the slipping of grain boundary and movement of dislocation by pining grain boundary, decreased by approximately 15% at 150℃ compared with ones at room temperature. Fracture mechanism of the alloy at room temperature is characterized by brittle cleavage fracture while it is characterized by ductile rupture at 150℃.关键词：Magnesium Alloy;Nd;Die Casting
- 2
- |
- 85
- |
- 1
发布时间：2023-12-18 - 摘要：对镁合金陶瓷型低压铸造工艺及镁合金的组织和力学性能进行了研究。结果表明,对于中型（质量为1～10kg）的零件通过低压铸造能够很好的成型,成型的零件具有较高的尺寸精度,其中角度误差仅为1.16%。铸造组织主要由α-Mg及Mg12Nd组成。由于冷却速度的降低,陶瓷型低压铸造镁合金的晶粒尺寸明显增大,至64μm左右,力学性能降低至155MPa左右,断裂方式是以解理断裂为主的脆性断裂。关键词：镁合金;陶瓷型;低压铸造
- 2
- |
- 194
- |
- 1
发布时间：2023-12-18 - 摘要：Practical experiences of the production of the T groove machine tool plates and counterpoised iron by V moulding process were described. The practical production shows that production of cast iron and cast steel plates by V process can improve quality, decrease the cost and lighten the work intensity as well as increasing the economic benefit.关键词：V Process;Machine Tool Plate;Application
- 2
- |
- 87
- |
- 1
发布时间：2023-12-18 - 摘要：Aiming at pump body with large size and complicated shape, wax pattern for pump body was made successfully through making water soluble core and wax pattern assembly. Shell mold was made by sol silicate process. The pump body was successfully produced by rationally designing gating system, determining rational dewaxing process, baking process and pouring process.关键词：Pump Body;Investment Casting;Process
- 2
- |
- 283
- |
- 3
发布时间：2023-12-18 - 摘要：Application of energy-saving,environmental-protection and exhausting-reduction equipment in investment casting was described. Features of waste-water treatment cyclic utilization equipment, sand reclaimed equipment and water-bathing duty-removal equipment were expounded emphatically. Energy-saving products, such as electric resistant furnace with SiC rod, rotary stove smelting furnace, were introduced. The practical production verified that these equipment exhibited desirable energy-saving effects.关键词：Investment Casting;Energy-Saving;Environmental Protection
- 2
- |
- 81
- |
- 2
发布时间：2023-12-18 -
- 摘要：Effects of grain refiner addition and alternative low frequency electromagnetic field on grain size in mold casting commercial aluminum have been investigated. The results show that shrinkage porosity and surface quality of the mold casting aluminum ingot can be greatly improved as a result of changing flow morphology of aluminum melt by alternative low frequency electromagnetic field, meanwhile, grain size in the ingot is remarkably refined. With increasing in grain refiner addition, the grain size in the mold casting aluminum ingot is decreased under the condition of alternative low frequency electromagnetic field or without electromagnetic field. At a given grain refiner addition, the grain size in the ingot with alternative low frequency electromagnetic field is much smaller than that without electromagnetic field.关键词：Alternative Low Frequency Electromagnetic Field;Grain Refinement;Commercial Pure Aluminum;As-cast Microstructure
- 2
- |
- 178
- |
- 1
发布时间：2023-12-18 - 摘要：Al-20Si alloy was remelted at different temperatures, and then was mixed with Zn melt by means of electrolyte copper to fabricate silicon particle reinforced zinc matrix composites. The microstructure and mechanical properties of the composites were investigated by SEM （scanning electron microscope）, XRD （X-ray diffraction） and tensile testing. The results indicate that fine silicon particles distributed homogeneously in the ZA27 alloy can be obtained by adjusting the technical design. Hardness and tensile strength of the prepared composites are greatly superior to those of ZA27 matrix alloy, while elongation is distinctly lower than that of the ZA27 alloy.关键词：Al-Si Alloy;Primary Si Phase;Zinc Matrix Composites;Melt Mixing Method
- 2
- |
- 86
- |
- 1
发布时间：2023-12-18 - 摘要：Apparent viscosity of TiB2 particle reinforced aluminum matrix composites melt with varied TiB2 volumetric fraction was tested by rotary cylinder method at different temperatures. The results show that apparent viscosity of the composites melt exhibits a different transformation at 750780℃ as a result of more uniform distribution of the ceramic particles with increasing in temperature and rotor stirring. And then apparent viscosity of the composites melt is increased at 780830℃ as a result of particle deposition.关键词：Apparent Viscosity;Aluminum Matrix Composites;Melt;TiB2
- 2
- |
- 143
- |
- 3
发布时间：2023-12-18 - 摘要：Precipitation of coarse secondary phase in 6063 aluminum alloy can be reduced by controlling content of main element and adding rare earth element. Extrusion experiment shows that extrusion speed can be improved by 55% based on control and optimization of composition in the alloy. The grain size in the microstructure of 6063 aluminum alloy can be refined as a result of creation of fine RE reinforcing phase through OM （optical microscope） and energy spectrum analysis, and Fe content detrimental to mechanical properties of the alloy can be decreased with RE addition. Tensile strength, elongation, tensile stress of the 6063D alloy containing Re element are 211MPa, 9.0% and 189MPa, respectively, exhibiting desirable mechanical properties.关键词：6063 Aluminum Alloy;RE;Composition;Extrusion
- 2
- |
- 261
- |
- 1
发布时间：2023-12-18 - 摘要：Effects of mixed RE with Y and Nd on corrosion rate of AZ81 magnesium alloy were examined in 3.5% NaCl solution by the static weight-loss tests. Microstructure and corrosion surface morphology of the AZ81 magnesium alloy were observed by OM （optical microscope） and SEM （scanning electron microscope）. It is found that with 2% mixed RE with Y and Nd addition, more uniformly distributed structure and composition in the AZ81 magnesium alloy can be observed with the refinement of the grain size, meanwhile, smallest corrosion product in the surface of alloy with homogeneous and compact distribution can be obtained, resulting in the great decrease of corrosion rate, which is responsible for the distinct improvement of corrosion resistance of the AZ81 magnesium alloy.关键词：Y;Nd;AZ81 Magnesium Alloy;Corrosion Resistance
- 2
- |
- 230
- |
- 5
发布时间：2023-12-18 - 摘要：Hot compression test of AZ31 magnesium alloy was performed at different temperature to investigate relationship between deformation rate and deformation temperature as well as microstructure evolution of the tested alloy during high temperature hot compression. The results show that with increasing in deformation temperature, the plastic deformability of the AZ31 magnesium alloy is improved, which is attributed to the movement of non-datum plane slipping system, so the alloy is suitable for being hot worked at above 240 ℃. Grain size in the deformed AZ31 alloy can be refined with the increase of deformation rate, which is the result of dynamic recrystalization during the high temperature compression. The grain size with 23 μm can be observed with 70% deformation rate.关键词：AZ31 Magnesium Alloy;Hot Deformation;Microstructure;Dynamic Recrystallization
- 3
- |
- 304
- |
- 2
发布时间：2023-12-18 - 摘要：Effects of trace yitrium addition and solution treatment on microstructure, tensile properties and corrosion behavior of Al-10Mg alloy were investigated by XRD （X-ray diffraction）, SEM （scanning electron microscope）, OM （optical microscope） and tensile testing. The results indicate that tensile strength and elongation of the alloy can be improved with Y addition, which is attributed to grain refinement and creation of Al4MgY discontinuously distributed along grain boundary strengthening grain boundary. The alloy with desirable mechanical properties, tensile strength of 261.8MPa and elongation of 4.3%, can be observed with 0.4% Y addition. With Y addition more than 0.4%, the tensile strength and elongation of the alloy are deteriorated as a result of Al4MgY phase continuously distributed along grain boundary decreasing adhesive strength of grain boundary. The Al-10Mg alloy containing Y free is typically characterized by interdendrite brittle fracture, while the alloy with Y addition is characterized by ductile fracture, resulting in the great increase of fracture toughness. Y addition is detrimental to corrosion behavior of the alloy due to strengthening interdendrite corrosion tendency.关键词：Al-Mg Alloy;Y;Microstructure;Mechanical Properties;Corrosion Resistance
- 2
- |
- 260
- |
- 5
发布时间：2023-12-18 - 摘要：Creep behavior of Mg-Nd-Zn-Zr（ZM6） alloy at 308 K was tested by a uniaxial tension method. The results show that with stress less than yield strength, creep rate is increased with increasing in stress. Creep rate and creep stress exponent were determined by analyzing relation of creep stress with time. Creep mechanism of the ZM6 alloy at ambient temperature is characterized by dislocation slipping. Datum plane slipping accompanying with few twins can be observed by TEM （transmission electron microscope） during creeping process.关键词：Magnesium Alloy;Ambient Creep;Twinning;Slipping
- 2
- |
- 368
- |
- 6
发布时间：2023-12-18 - 摘要：Microstructure and mechanical properties of permanent mold A356 aluminum alloy casting before and after hot deformation were investigated to examine the effects of hot deformation by investigating the same parts at varied deformation rate and the different ones at the same deformation rate. The results indicate that elongation of the permanent mold castings is improved as a result of effectively eliminating casting defects in microstructure and making eutectic Si particle distribute orderly by hot deformation. The elongation of the permanent mold casting is increased from 2.1% in as-cast state to 11% in hot deformed state, and at a given 20% hot deformation rate, that at different positions of the castings are increased by 6.13%, 7.76% and 8.72%, respectively, compared with that of as-cast ones.关键词：Hot Deformation;Deformation Rate;Elongation;Aluminum Alloy Parts
- 2
- |
- 244
- |
- 5
发布时间：2023-12-18 - 摘要：Relationship between the microstructural evolution and plastic deformation mechanism of AZ61 magnesium alloy was investigated by extrusion and forging combined forming. The results indicate that dynamic recrystallization occurs in the AZ61 magnesium alloy by both extrusion and isothermal forging, leading to the generation of fine and homogeneous equiaxed grain. Yield strength, tensile strength, elongation of the formed alloy after T5 heat treatment reach 249MPa, 305MPa, 15,4%, respectively. Plastic deformation mechanism of the formed alloy is described.关键词：Magnesium Alloy;Extrusion and Forging Combined Forming;Plastic Deformation;Dynamic Recrystallization;Grain Refinement;Heat Treatment
- 2
- |
- 139
- |
- 5
发布时间：2023-12-18 - 摘要：Small caliber tin-bronze ring was produced by vertical centrifugal casting based on its structure and size features. A series of parameters, such as preheating temperature of mould, rotation velocity, pouring temperature and pouring speed, were determined for vertical centrifugal casting. Melting process of ZQSn10-1 alloy was made up and the small caliber tin-bronze ring was produced. Microstructure and mechanical properties of the ring were analyzed by OM （optical microscope） and tensile testing. Effects of filtration of liquid alloy and water cooling process for mould on surface quality, microstructure and properties of the ring were described. The results indicate that gas hole and inclusion defects in surface of the ring can be greatly eliminated by filtering liquid alloy. Grain size in the ring can be distinctly refined by water cooling for mould, which is responsible for the obvious improvement of hardness and tensile strength of the ring.关键词：Tin-Bronze;Centrifugal Casting;Water Cooling
- 2
- |
- 139
- |
- 1
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