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hot work
相关语句
  热作
     Research and Production of Hot Work Die Steel 4Cr5Mo2NiVRE (R88)
     热作模具钢4Cr5Mo2NiVRE(R88)的研制
短句来源
     Blue brittlenesses of a die steel for hot work 35Cr3Mo3W2V
     热作模具钢35Cr3Mo3W2V的兰脆
短句来源
     Research in Austempering Technology of Hot Work Die Steel 4Cr5MoSiV1
     4Cr5MoSiV1热作模具钢等温淬火工艺的研究
短句来源
     Study of the Application of the Ultrahigh-Malleability Hot Work Die Steel 3Cr3Mo3VNb
     超高强韧性热作模具钢3Cr3Mo3VNb的应用研究
短句来源
     Effect of Rare Earth La on the Structure and Properties of 3Cr2W8V Hot Work Die Steel
     稀土La对3Cr2W8V热作模具钢组织和性能的影响
短句来源
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  高温作业
     Synthetic evaluation on the occupational adaptability in the hot work environment
     高温作业环境职业适应性综合评价
短句来源
     According to the features of the hot work environment,the paper advocates three test-indexes; body behaviour character(BC),work environment temperature(ET) and labour intensity(LI).
     文章根据高温作业环境的特征,提出3个单项测试指标:人体行为特性(BC)、作业环境温度(ET)和体力劳动强度(LI)。
短句来源
     At last,a synthetic model of evaluation and a standard are established. So the occupational adaptability in the hot work environment can be synthetically evaluated by quantitative analysis.
     最后,建立了综合评价模型和标准,对高温作业环境职业适应性进行定量化综合评价
短句来源
  “hot work”译为未确定词的双语例句
     This paper deals with the hot work procese and mechanical properties of steel 1Cr11Ni2W2Mo2WVfor aircraft turbine blade.
     探讨了航空工业用1Cr11Ni2W2MoV钢叶片热加工工艺与力学性能的关系。
短句来源
     Effects of Double Heat Treatmeat on Fatigue Crack Growth of Hot Work Die Steel 3Cr2W8V
     双重热处理对3Cr2W8V钢疲劳裂纹扩展的影响
短句来源
     Stress\|strain curves of boron bearing microalloy steel - 0 05C\|1 57Mn\|0 5Cu\|0 25Mo\|0 05Nb\|0 01Ti 0 0012B with different deformation rate at 1 000℃ and 1 100℃ and effect of strain of hot work on grain size of the steel were tested and measured by Gleeble 1500 hot simulator using single pass reduction test method.
     采用单道次压缩实验方法 ,在Gleeble 1 5 0 0热模拟机上试验和测试了含硼微合金钢 (0 0 5C ,1 5 7Mn ,0 5Cu ,0 2 5Mo ,0 0 5Nb ,0 0 1Ti,0 0 0 1 2B)在不同变形速率下 1 0 0 0℃和 1 1 0 0℃时应力 应变曲线和热加工应变量对该钢晶粒尺寸的影响。
短句来源
     Six kinds of properties have been obtained for three kinds of hot work die steels, 3Cr2W8V, 4Cr5Mo2MnVSi and 4Cr3Mo2MnVNbB. The anti-failure indexes which affect the service life of the aluminium and copper alloy die casting dies have been found out.
     实测3Cr2W8V,4Cr5Mo2MnVSi和4Cr3Mo2MnVNbB钢的六种性能,找出了影响铝、铜压铸模使用寿命的主要失效抗力指标。
短句来源
     The hot work temperature of the duplex stainless steel should be higher than 1 040℃and its optimum solution treatment temperature is 1 040-1 100℃.
     该双相不锈钢的热加工温度应大于1 040℃,其最佳固溶处理温度为1 040~1 100℃。
短句来源
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  hot work
The fatigue characteristics of the hot work tool steel X40CrMoV 51 (UNS number T20811) at high temperatures is presented.
      
The results obtained during industrial trials have shown that the service life of hot work dies can be increased by 33 to 180% using the brush plating technique to prepare amorphous coatings.
      
An approach to developing an alternative hot work die steel
      
The allowance of normal grain growth during preanneal or hot work to preserve abnormal grain growth ability was investigated and correlated with the amount of softening.
      
The significance of observed microstructural differences for equivalent deformation conditions (iso-Z, where Z is the Zener-Holloman parameter) is discussed in relation to the utilization of Z for predicting hot work structures and strengths.
      
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In order to determine the workability of cast iron with spheroidal graphite,the following tests have been conducted on this material in the as-cast and annealed condition:tensile tests,compression tests,Charpy impact tests,impacttensile tests,twisting tests,upsetting tests under the drop hammer and small-scaledrolling tests.Results from these tests show that the best hot-working temperature rangeof this material varies somewhat with the stress system applied and the speed ofworking,and in general...

In order to determine the workability of cast iron with spheroidal graphite,the following tests have been conducted on this material in the as-cast and annealed condition:tensile tests,compression tests,Charpy impact tests,impacttensile tests,twisting tests,upsetting tests under the drop hammer and small-scaledrolling tests.Results from these tests show that the best hot-working temperature rangeof this material varies somewhat with the stress system applied and the speed ofworking,and in general lies between 700° and 1100℃.Within this temperaturerange,the maximum amount of working permissible for a single working operationvaries considerably with the stress system applied.Under tensile stresses,thismaximum amount of working lies between 28 and 57.6%;under predominentlycompressive stresses,it lies between 58.5 and 72.9%;while in the small-scaledrolling tests,the maximum reduction in thickness permissible for a single passlies between 38.6 and 44.3%.The maximum amount of working permissible is alsoaffected by the speed of working,being greater at lower speeds.Tests on industrial scale show that the upsetting and small-scaled rollingtests give results nearest to those from industrial tests.Charpy impact tests,impacttensile tests,upsetting tests and small-scaled rolling tests show more prominentlythe best hot-working temperature range than the other tests conducted.Results of the present research also indicate that cast iron with spheroidal graphitehas a higher strength and workability when subjected to compressive stresses thanto tensile stresses,that a brittle temperature range has been recorded between200° and 650℃,which varies with the speed of test.Judging from the variationof the resistance to deformation with the change of temperature and the speedeffect,this phenomenon is associated with blue brittleness.

为了确定球墨铸铁的可塑性,曾进行了铸态和铸态经墨化热处理后的球墨铸铁在不同温度下的抗张试验、抗压试验、冲击弯曲试验、冲击抗张试验、撚扭试验、顶锻试验和小型压延试验庑┦匝橹赋?球墨铸铁的最好热加工温度范围随着应力体系和加工速度的不同而略有不同,但一般介于700℃和1100℃之间。在此温度范围内球墨铸铁能够耐受的最大加工量依所受的应力体系而有相当大的差別。在张应力作用下,此最大加工量介于28—57.6%之间,在主要为压应力作用下,介于58.5—72.9%之间;在小型压延试验中,其最大加工量则介于38.6—44.3%之间。最大加工量亦受速度的影响:实验室的试验指出,球墨铸铁在比较低速下加工有较高的塑性。在比较接近生产的条件下的试验结果指出:顶锻试验和小型压延试验给予最靠近生产试验结果的数值。冲击弯曲、冲击抗张、顶锻试验和小型压延试验给予比较明确的最好热加工温度范围,其他试验则不能给予很明确的结果。如果采用了测压仪、小型压延试验,还可以提供变形阻力的资料。试验结果指出:球墨铸铁在压应力作用下比在张应力作用下有较大的强度和塑性;其中温变脆温度依试验速度的变化而在200°—650℃之间变化,根据变形阻力和变脆温度范围的...

为了确定球墨铸铁的可塑性,曾进行了铸态和铸态经墨化热处理后的球墨铸铁在不同温度下的抗张试验、抗压试验、冲击弯曲试验、冲击抗张试验、撚扭试验、顶锻试验和小型压延试验庑┦匝橹赋?球墨铸铁的最好热加工温度范围随着应力体系和加工速度的不同而略有不同,但一般介于700℃和1100℃之间。在此温度范围内球墨铸铁能够耐受的最大加工量依所受的应力体系而有相当大的差別。在张应力作用下,此最大加工量介于28—57.6%之间,在主要为压应力作用下,介于58.5—72.9%之间;在小型压延试验中,其最大加工量则介于38.6—44.3%之间。最大加工量亦受速度的影响:实验室的试验指出,球墨铸铁在比较低速下加工有较高的塑性。在比较接近生产的条件下的试验结果指出:顶锻试验和小型压延试验给予最靠近生产试验结果的数值。冲击弯曲、冲击抗张、顶锻试验和小型压延试验给予比较明确的最好热加工温度范围,其他试验则不能给予很明确的结果。如果采用了测压仪、小型压延试验,还可以提供变形阻力的资料。试验结果指出:球墨铸铁在压应力作用下比在张应力作用下有较大的强度和塑性;其中温变脆温度依试验速度的变化而在200°—650℃之间变化,根据变形阻力和变脆温度范围的变化可以比较肯定地认为这是一种蓝脆的现象。

The effect of hot working on the graphite formation in 1.1—1.2% carbon toolsteels during subsequent annealing was investigated.Specimens were heated in air to1050℃ for 10 minutes,cooled in a second furnace to the forging temperature,forged rapidly to give reductions in height between 0—40%,air-cooled,and annealed for16 hours at 700℃.Graphite was determined by chemical analysis.It was foundthat:1.Austenitizing in air between 870°and 1050℃ followed by air cooling causedthe formation of graphite during subsequent...

The effect of hot working on the graphite formation in 1.1—1.2% carbon toolsteels during subsequent annealing was investigated.Specimens were heated in air to1050℃ for 10 minutes,cooled in a second furnace to the forging temperature,forged rapidly to give reductions in height between 0—40%,air-cooled,and annealed for16 hours at 700℃.Graphite was determined by chemical analysis.It was foundthat:1.Austenitizing in air between 870°and 1050℃ followed by air cooling causedthe formation of graphite during subsequent annealing.The amount of graphiteincreased with increasing austenitizing temperature.Precipitation of graphite occurredalong the austenite grain boundary.2.Hot working at various temperatures increased the tendency of graphitizationduring subsequent annealing.The amount of graphite formed was smallest whenthe specimens were forged at 870℃ and increased with increasing or decreasingtemperature.3.Slow cooling after the specimens had been heated to or hot worked at hightemperatures reduced the degree of graphitization,provided that free cementite wasabsent during hot working.4.Forging during continuous cooling removed the effect of previous heatingor hot working until the temperature was sufficiently low to produce free cementiteduring forging.Forging during cooling gave minimum amount of graphite whenthe forging was interrupted between 820°and 870℃.A possible explanation to account for the phenomena is suggested.

在热加工过程中,加热及加工温度对1.1—1.2%碳钢在加热或加工后空冷再进行球化退火时,渗碳体分解为石墨的作用有重要的影响。在奥氏体状态870℃以上,停止加工的温度愈高,以后石墨的析出作用也愈严重。高温加工后缓冷或在低温加工可以减轻石墨化的作用。

Under controlled hot working conditions, the specimens of killed and rimming

在控制的热轧条件下,曾制备了四种不同晶粒大小和显微结构的镇静钢和沸腾钢“钢三”的试样进行了机械时效试验。衡量机械时效处理的后果采用了冲击、抗张、抗压和硬度四种试验。结果示:控制热轧条件可以改进“钢三”的显微结构,从而改善了“钢三”机械时效处理后的变脆倾向,其中镇静钢的显微结构和晶粒度可以在较大的范围内改变而成品均可以达到标准的要求,但沸腾钢则要严格地控制其显微结构和晶粒度才能合格。衡量机械时效处理的后果以比较刚性的试验如冲击试验和抗张试验较能给出明确和有规律的结果,抗压度验和硬度试验的结果软不明确而且规律性亦较差。机械时效处理后的性能的改变是冷加工和时效的综合结果。随着显微结构的不同,冷加工和时效在机械时效处理的总效果中所占的分量亦各异。

 
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