增大淬火深度对高淬透性材料大模数圆柱齿轮齿根承载能力的影响*

IF 0.3 Q4 THERMODYNAMICS
A. Sorg, C. Güntner, T. Tobie, K. Stahl
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引用次数: 0

摘要

高应力齿轮通常由淬火钢制造。壳体硬化深度(CHD)对牙根承载能力有显著影响。对于16MnCr5和20MnCr5材料,过去已经进行了全面的研究,以确定圆柱直齿齿轮的最佳淬火深度,尺寸模块mn = 10 mm。然而,在某些应用中,可能需要选择增加的CHD,例如减少牙齿侧面断裂的风险。因此,问题出现了,在多大程度上,关于CHD对牙根承载能力的影响的现有发现也可以转移到更高淬透性和更大尺寸的材料。为此,研究了几种具有不同合金体系和淬透性的材料在硬化深度变化下的淬透性。除了广泛的材料表征外,还进行了脉动试验以确定尺寸为mn = 12 mm的测试齿轮的齿根承载能力。结果表明,在mn = 10 mm的MnCr钢上得到的结果原则上也可以转移到这里研究的变体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of an Increased Case Hardening Depth on the Tooth Root Load Carrying Capacity of Large Modulus Cylindrical Gears Made of Materials with Higher Hardenability*
Abstract Highly stressed gears are usually manufactured from case hardening steels. The case hardening depth (CHD) has a significant influence on the tooth root load carrying capacity. For the materials 16MnCr5 and 20MnCr5, comprehensive investigations have been carried out in the past to determine the optimum case hardening depth up to size module mn = 10 mm on cylindrical spur gears. In certain applications, however, it may be necessary to select an increased CHD, e. g. to reduce the risk of tooth flank breakage. The question therefore arises as to what extent the available findings on the influence of the CHD on the tooth root load carrying capacity can also be transferred to materials of higher hardenability and larger sizes. For this purpose, several materials with different alloy systems and hardenabilities were examined under variation of the case hardening depth. In addition to extensive material characterization, pulsator tests were carried out to determine the tooth root load-carrying capacity on test gears of size mn = 12 mm. It is shown that the results obtained on MnCr steels up to size mn = 10 mm can in principle also be transferred to the variants investigated here.
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来源期刊
CiteScore
1.50
自引率
33.30%
发文量
43
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