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增压涡轮
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  “增压涡轮”译为未确定词的双语例句
     Experimental Research on the Near Net Shape Casting Process of Gamma Tita nium Aluminide Turbochargers
     γ-ΤiAl增压涡轮近净形铸造过程实验研究
短句来源
     Research on Numerical Simulation of Investment Casting Process for Gamma Titanium Aluminide Turbocharger
     γ-TiAl增压涡轮熔模铸造过程数值模拟研究
短句来源
     LIONCEL addition bolt on turbo kit
     港九菱帅低增压涡轮改装
短句来源
     Using water cooling copper crucibl e, the titanium aluminum alloy was melted by ISM technique, and gamma titanium a luminide turbochargers were produced by centrifugal investment precision casting process. Adopting optimizing design of risers, sound turbochargers were prepare d, and solidification process and shrinkage defects of turbocharger castings wer e analyzed.
     本研究采用水冷铜坩埚真空感应凝壳技术和熔模型壳离心浇注的铸造方法制备γ-TiAl增压涡轮,通过改善冒口工艺获得了健全的γ-TiAl涡轮铸件,分析了γ-TiAl增压涡轮的凝固过程和收缩缺陷产生原因。
短句来源
     Aiming to diffusion bond intermetallic TiAl turbine to steel 40Cr axis, composite isolation diffusion bonding technology was propounded. The isolation effectiveness of the diffusion bonding technology with composite isolation layer was investigated ,and the principles of the selecting atomic radius and atomic electronegativity for the layer were found by virtue of the diffusion bondability of materials.
     以TiAl金属间化合物增压涡轮与 4 0Cr钢轴的扩散连接为背景 ,提出了复合阻隔法扩散连接工艺 ,并探讨了阻隔效应原理 ,建立了从材料的扩散连接性角度出发的原子半径、原子电负性阻隔层选择原则。
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  相似匹配句对
     Study on Resonant Intake Turbocharging System
     涡轮谐振增压系统的研究
短句来源
     LIONCEL addition bolt on turbo kit
     港九菱帅低增压涡轮改装
短句来源
     Pressure Carburizing
     增压渗碳
短句来源
     Technique of turbine dusting
     涡轮除尘技术
短句来源
     Turbine Flowmeter Calibration
     涡轮流量计的标定
短句来源
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The research on forming process of gamma titanium aluminide is at the f rontier in the field of materials processing. Using water cooling copper crucibl e, the titanium aluminum alloy was melted by ISM technique, and gamma titanium a luminide turbochargers were produced by centrifugal investment precision casting process. Adopting optimizing design of risers, sound turbochargers were prepare d, and solidification process and shrinkage defects of turbocharger castings wer e analyzed. The results showed that shrinkage...

The research on forming process of gamma titanium aluminide is at the f rontier in the field of materials processing. Using water cooling copper crucibl e, the titanium aluminum alloy was melted by ISM technique, and gamma titanium a luminide turbochargers were produced by centrifugal investment precision casting process. Adopting optimizing design of risers, sound turbochargers were prepare d, and solidification process and shrinkage defects of turbocharger castings wer e analyzed. The results showed that shrinkage defects of turbochargers could be decreased or eliminated when the modulus difference between riser and casting or the volume ration of riser to casting were increased. In order to provide numer ical simulation study with thermal property parameters, coefficient of thermal e xpansion, specific heat and coefficient of thermal conductivity of the titanium aluminium alloy were measured. The relations between them and temperature could be expressed respectively as:á1=8.106 51 +0.007 3T-2.976 19E-6T2;CP=668.281 58-0.013T+1.119 05E-4T2;=19.822 52-0.027 81T+6.514 97E-5T2-3.210 96 E-8T 3。

γ-TiAl金属间化合物的成形工艺是材料成形领域的前沿领域和研究热点。本研究采用水冷铜坩埚真空感应凝壳技术和熔模型壳离心浇注的铸造方法制备γ-TiAl增压涡轮,通过改善冒口工艺获得了健全的γ-TiAl涡轮铸件,分析了γ-TiAl增压涡轮的凝固过程和收缩缺陷产生原因。结果表明,增大冒口与铸件的模数之差以及冒口与铸件的体积之比有利于减少及消除涡轮铸件的收缩缺陷。为给数值模拟研究提供热物性参数,针对涡轮铸件用钛铝合金,实验测试了合金的热膨胀系数、比热和热导率等物性参数,其与温度的关系分别为:α1=8.10651+0.0073T-2.97619E-6T2;CP=668.28158-0.013T+1.11905E-4T2;=19.82252-0.02781T+6.51497E-5T2-3.21096E-8T3。

Aiming to diffusion bond intermetallic TiAl turbine to steel 40Cr axis, composite isolation diffusion bonding technology was propounded. The isolation effectiveness of the diffusion bonding technology with composite isolation layer was investigated ,and the principles of the selecting atomic radius and atomic electronegativity for the layer were found by virtue of the diffusion bondability of materials. In this paper, according to isolation effectiveness principle ,intermetallic TiA1 and steel 40Cr are diffusion...

Aiming to diffusion bond intermetallic TiAl turbine to steel 40Cr axis, composite isolation diffusion bonding technology was propounded. The isolation effectiveness of the diffusion bonding technology with composite isolation layer was investigated ,and the principles of the selecting atomic radius and atomic electronegativity for the layer were found by virtue of the diffusion bondability of materials. In this paper, according to isolation effectiveness principle ,intermetallic TiA1 and steel 40Cr are diffusion bonded successfully by using a composite isolation layer Ti/V/Cu. In this case, layers of infinite solid solutions can be found at the V/Cu and Cu/40Cr interfaces which are favorable to the bonding strength, and a diphase Ti3 Al + TiAl layer and a Ti solid solution which enhance the strength of the joint are obtained at the TiAVTI interface. The interface of Ti/V/Cu/40Cr was free from TiC, Ti 3Al+FeAI FeAl 2 intermetallic compounds and other brittle phases, and the strength of the joint was as high as 42OMPa. Isolation effectiveness principle is effective to the selecting of composite isolation layer.

以TiAl金属间化合物增压涡轮与 4 0Cr钢轴的扩散连接为背景 ,提出了复合阻隔法扩散连接工艺 ,并探讨了阻隔效应原理 ,建立了从材料的扩散连接性角度出发的原子半径、原子电负性阻隔层选择原则。利用本文的扩散连接阻隔效应原理 ,确定了TiAl金属间化合物增压涡轮与 4 0Cr钢轴的扩散连接复合阻隔层为Ti/V/Cu ,由此得到的扩散连接接头在V/Cu及Cu/ 4 0Cr的连接界面处出现了对连接性能有利的无限固溶体层 ,在TiAl/Ti的接触面上生成了能够强化接头强度的Ti3 Al+TiAl双相层和Ti的固溶体层 ,与TiAl/ 4 0Cr直接扩散连接相比 ,Ti/V/Cu复合阻隔层的加入 ,避免了在TiAl/4 0Cr的接触面上TiC、Ti3 Al、FeAl、FeAl2 金属间化合物脆性相的产生 ,接头强度高达4 2 0MPa ,因此利用本文的阻隔效应原理可以很好地进行复合阻隔层的选择

Considering the characteristics of centrifugal casting technology with investment shell, the mathematical model of solidification process of gamma titanium aluminide turbochargers was established, and the model for shrinking and feeding was deduced under the condition of centrifugal pressure. Then, temperature field and shrinkage defects of gamma titanium alunimide turbocharger with different technologies were simulated. The results showed that the temperature distribution could be calculated and the shrinkage...

Considering the characteristics of centrifugal casting technology with investment shell, the mathematical model of solidification process of gamma titanium aluminide turbochargers was established, and the model for shrinking and feeding was deduced under the condition of centrifugal pressure. Then, temperature field and shrinkage defects of gamma titanium alunimide turbocharger with different technologies were simulated. The results showed that the temperature distribution could be calculated and the shrinkage defects could be predicted with the model, and the simulation results coincided with the experimental results quite well. It is indicated that the optimum process to remove shrinkage defects presented in the preceding paper is rational.

根据熔模型壳离心浇注的铸造工艺特点,建立了γ-TiAl增压涡轮凝固传热过程的数值模型,推导了离心压力下γ-TiAl金属间化合物的凝固收缩和补缩过程数学模型,模拟计算了γ-TiAl增压涡轮铸件的温度场和收缩缺陷。结果表明,模型能可靠计算γ-TiAl增压涡轮铸件凝固过程的温度分布和准确预测铸件的收缩缺陷,数值模拟结果与实验结果吻合良好。数值模拟结果证实了前期工作所提出的进一步减少及消除收缩缺陷的优化工艺措施的合理性。

 
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