Test and Reseach about Bending Fatigue Strength of Three Kinds of Baintic Ductile Iron Gears
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摘要:
本文總結了三種貝氏體球鐵齒輪的齒根彎曲疲勞極限應力σF11n的測定結果。根據齒輪疲勞強度的快速測定方法,采用ISO/TC60424《直齒及斜齒園柱齒輪傳動承載能力計算的基本原理》,求得循環基數No=3×106時的σF11n（可靠度為99%）分別為:
作者對測定結果和斷口特點進行了初步分析。
Abstract:This article sums up the testing results of bending fatigue strength of three kinds of Baintic ductile iron gears. The testing method is an accelerated test for determining the fatigue strength of gears. For calculating the bending fatigue stress 《ISO/TC60 424E Calculation of tooth strength of spur and helical gears》 is adopted.
When the number of basic cycles is No = 3×106, the bending fatigue limit stresses σFlim（R = 0. 99） are shown as follows:The measurements and surfaces where failure occurred are analyzed.
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