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effective case depth     
相关语句
  有效硬化深度
     The Control of Effective Case Depth for Carburized Gear of 20CrMnMo Steel
     20CrMnMo钢渗碳齿轮有效硬化深度的控制
短句来源
  有效层深度
     This paper researched the relations of the core hardness of large gear made of 20CrMnMoH with modulus and effective case depth. ,as well as of the core microstructure with quenching temperature .
     用五齿试样研究了用于大模数、大型零件的20CrMnMoH材料的心部硬度与零件模数和有效层深度的关系,以及心部组织与淬火温度的关系。
  有效硬化层
     The saw cutting performence that the effective case depth of the teeth is 0. 28mm and 0' 36mm,is superior to the national standard.
     锯齿有效硬化层为0.28mm和0.36mm的锯条,锯切性能优于国标。
短句来源
     But the less effective case depth of the tooth tip to centre HV500,the saw cutting performence does not achieved requirement of the national standard.
     但是齿尖至心部HV500处有较小的有效硬化层,锯切性能达不到国标要求。
短句来源
  “effective case depth”译为未确定词的双语例句
     It is shown by the results that the Fdyn value shall be reduced gradually with the increase of the fracture morphology transition from timples to quasicleavage type,almost few effect on Fdyn value when the effective case depth is between 0.85~1.05 mm and the fineness of grain in the matrix shall be favourable to the increase of Fdyn value.
     结果表明,随着断口形貌由韧窝状向准解理状转化量的增大,Fdyn值逐步降低; 有效层深在0.85~1.05mm时对Fdyn值几乎没有影响;
短句来源
     The test results were abtained that the core hardness reduces with the incresion of the modulus and effective case depth of gear ,and moderate higher quenching temperature has effect for improving the core microstructure .
     结果表明:零件的心部硬度随模数和有效厚度的增加而降低,适度提高淬火温度能够达到改善心部组织的效果。

 

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      effective case depth
    It was found that the process obeys a parabolic law of diffusion for total case depth and is slower than parabolic for effective case depth formation.
          
    The surface hardness was 800 Hv, the effective case depth was 0.6 mm, and the surface carbon content was 0.75 wt pct.
          
    Evaluation of effective case depth in heat treated steel products
          


    The Carburing direct quenching and the single heat quenching be tested for gear (Modul 4) of 20CrMnMo steel. It was shown that the effective case depth of gear pitch circle bourd up with metallography microstracture and carbon content, Bring forward no influence of the quenching condition on effective case depth, The control quality of carburizing and quenching can be using method of metallography microstracture.

    对20CrMnMo钢齿轮(模数4)进行渗碳直接淬火和一次淬火工艺试验,结果表明,齿轮节圆处的有效硬化深度与其相对应的组织和碳浓度有对应关系;淬火方式对实际有效硬化深度无明显影响;可以采用金相法间接地控制渗碳淬火质量。

    By replacing of air cooling after forging and normaizing with ausforging and 600 -650℃ tempering to treat 20CrMnTi steel semifinshed gear,the surface rating, Rz, was reduced from 15.4 μm to 4.9 μm with little increase of the abtasion wear of cutting tools in next process,which solves the problem of the adhesive phenomenon and high surface rating due to low hardeness.Furthermore,the effective case depth after carbonitriding was increased form 0.72 mm to 0.8 mm.In addtion,the electricity consumption ...

    By replacing of air cooling after forging and normaizing with ausforging and 600 -650℃ tempering to treat 20CrMnTi steel semifinshed gear,the surface rating, Rz, was reduced from 15.4 μm to 4.9 μm with little increase of the abtasion wear of cutting tools in next process,which solves the problem of the adhesive phenomenon and high surface rating due to low hardeness.Furthermore,the effective case depth after carbonitriding was increased form 0.72 mm to 0.8 mm.In addtion,the electricity consumption was decreased by Fort-seven percent

    20CrMnTi钢齿轮毛坯经锻造余热淬火+60-650℃高温回火代替锻造后正火(原工艺),在后续加工中,齿轮表面粗糙度(本文测定Rz值)由原工艺的15.4μm下降到4.9μm以下,刀具磨损量仅少量增加,解决了长期以来原工艺由于硬度低引起的粘刀和表面粗糙大的问题.高温碳-氮共渗的有效硬化层深度由0.72mm增加到0.8mm,渗层组织也得到改善;同时还节约用电47%.

    This paper deals with microstructure,hardness of the teeth and saw cutting performence of theblade of five kinds of 20 steel hand hack saw blads with liquid carbonitriding. The result showed that thebest microstructure of the teeth:tempering martensite (Case) +low carbon martansite (Centre). The hardness of teeth achieved national standard. But the less effective case depth of the tooth tip to centre HV500,the saw cutting performence does not achieved requirement of the national standard. The saw cutting...

    This paper deals with microstructure,hardness of the teeth and saw cutting performence of theblade of five kinds of 20 steel hand hack saw blads with liquid carbonitriding. The result showed that thebest microstructure of the teeth:tempering martensite (Case) +low carbon martansite (Centre). The hardness of teeth achieved national standard. But the less effective case depth of the tooth tip to centre HV500,the saw cutting performence does not achieved requirement of the national standard. The saw cutting performence that the effective case depth of the teeth is 0. 28mm and 0' 36mm,is superior to the national standard.

    对5种20钢液体碳氮共渗手锯条的锯齿显微组织、硬度及其锯切性能进行了研究。结果表明:锯齿的最佳显微组织为回火马氏体(渗层)+低碳马氏体(心部):锯齿硬度均已达到国标;但是齿尖至心部HV500处有较小的有效硬化层,锯切性能达不到国标要求。锯齿有效硬化层为0.28mm和0.36mm的锯条,锯切性能优于国标。

     
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