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首页> 外文会议>ASDSO annual conference >FAILING SPILLWAY TRUNNION THRUST WASHERS AT PRIEST RAPIDS DAM
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FAILING SPILLWAY TRUNNION THRUST WASHERS AT PRIEST RAPIDS DAM

机译：在牧师急流坝上失败溢洪道耳鼻喉轮推力垫圈

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Self-lubricating bronze bearings, while state of the art 45 years ago, have definite limitations to their environmental suitability. This was discovered at the Priest Rapids Dam spillway, where ammonium compounds derived from bird droppings caused stress corrosion cracking of a susceptible alloy in the trunnion bearings. Even though the bearings performed quite well for 45 years the owner decided to replace the failing bronze material with new technology synthetic materials. The trunnion thrust washer and bushing replacement project is scheduled for completion in 2005. Because the project schedule was set up to rehab the most severely damaged trunnions first, by March 2003 almost all the cracked thrust washers will be replaced. The District believes the new trunnion bushing and thrust washer materials will prove to be at least as trouble free as the original installation. In addition, the new materials should have a lower coefficient of friction, thus decreasing the stresses in the arms. What remains to be proven is the new Orkot~(~R) synthetic material's long-term durability in this application.
机译：自润滑青铜轴承，而45年前的艺术州，对其环境适用性具有明确的局限性。这是在牧师迅速坝溢洪道发现的，其中氨污水源的铵化合物导致耳蜗轴承中易感合金的应力腐蚀开裂。尽管轴承表现得很好45岁，但业主决定用新的技术合成材料取代失效的青铜材料。 Trunnion推杆和衬套更换项目计划于2005年完成。由于项目时间表成立以康复最严重损坏的躯体，到2003年3月，几乎所有破裂的推力垫圈都将被取代。该地区认为，新的耳轴衬套和推力洗衣机材料将被证明至少是由于原始安装而无故障。此外，新材料应具有较低的摩擦系数，从而降低了臂中的应力。仍有待证实的是新的奥克托〜（〜〜）合成材料在本申请中的长期耐用性。

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