軸受メタルの疲れ強さ及び浸食について

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The series of fatigue tests of WJ2(tin-base) and WJ7(lead-base) whitemetal bearings which are commonly used for large sized bearings such as ship's stern tube bearings, were carried out under conditions of constant load amplitude by using 150mm diameter large scale bearing test rig. The bearings tested had various thickness of whitemetal lining from 0.9mm to 4mm. The cavitation erosion tests of whitemetal were also carried out by using a magnetostriction oscillator to vibrate specimens both in lubricating oil and in lubricating oil-water mixtures. The main results obtained are as follows; 1) From the point of view of fatigue strength, WJ7 whitemetal was superior to the WJ2 whitemetal. 2) Under the test conditions of the thickness of whitemetal lining between 0.9mm to 4mm, the thicker became whitemetal lining, the more increased the endurance against fatigue damages both in WJ2 and WJ7 whitemetal bearings. 3) In this experiments, two kinds of fatigue crack initiated at the bearing surfaces. The axial crack propagated steadily to the test time increased, and had more influence on the fatigue damages bearings than the circular crack which was saturated to grow. 4) According to the cavitation erosion tests, the weight loss by erosion of the lead-base whitemetal was larger than that of the tin-base whitemetal. In the test liquid of lubricating oil-water mixtures, the weight loss of the tin-base whitemetal increased fairly, but that of the lead-base whitemetal increased slightly.
独立行政法人海上技術安全研究所の論文
1981-01-31

軸受メタルの疲れ強さ及び浸食について

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