Experimental Study on Wear Resistance of Ball/Disc Friction Pairs of Orifice Valve Sliding Valve Self-locking Device
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摘要: 为优选孔板阀滑阀自锁装置配对副耐磨性能影响因素,选取不同球/盘配对副材料、盘粗糙度和润滑条件开展正交滚滑摩擦试验。敏感性分析结果表明,试验优化参数为:盘材料440C,球材料440C,盘粗糙度Ra = 0.4 μm,润滑条件脂润滑。优选参数配对副在试验后运行良好,球/盘表面形貌无明显磨损,摩擦系数无突变,说明优选参数的抗磨性能满足使用寿命需求。Abstract: In order to study the influence of the different factors on the wear resistance of the orifice valve sliding valve self-locking device, rolling-sliding friction tests under orthogonal conditions were carried out. Different ball/disc friction pairs materials, disc roughness, and lubrication medium were selected as the influencing factors. The results show that the optimized parameters of sensitivity analysis are: disc material 440C, ball material 440C, disc roughness Ra = 0.4 μm, and grease lubrication conditions. The optimized parameters pairs run well after test, and the surface morphology of the ball/disc has slight wear. It shows that the anti-wear performance of the optimal parameters meets the service life requirements.
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表 1 粉尘成分表
组成成分 Fe2O3 Fe3O4 FeCO3 FeO(OH) 含量/ % 96.5 3.14 0.2 0.16 表 2 试验工况参数
工况条件 参数 旋转速度 32 r/min 温度 25 ℃ 旋转直径 20 mm 时间 30 min 加载力 100 N 表 3 正交试验因素水平表
水平 A B C D 1 304 304 1.6 μm 无润滑 2 316L 316L 0.8 μm 粉尘水润滑 3 440C 440C 0.4 μm 脂润滑 表 4 正交试验设计
分组号 A B C D S1 304 304 1.6 μm 无润滑 S2 304 316L 0.8 μm 粉尘水润滑 S3 304 440C 0.4 μm 脂润滑 S4 316L 304 0.4 μm 粉尘水润滑 S5 316L 316L 1.6 μm 脂润滑 S6 316L 440C 0.8 μm 无润滑 S7 440C 304 0.8 μm 脂润滑 S8 440C 316L 0.4 μm 无润滑 S9 440C 440C 1.6 μm 粉尘水润滑 表 5 正交试验结果
分
组A B C D 摩擦因数μ 总磨损量g/10−3 S1 304 304 1.6 μm 无润滑 0.27440 8.25 S2 304 316L 0.8 μm 粉尘水润滑 0.26906 7.69 S3 304 440C 0.4 μm 脂润滑 0.11544 2.46 S4 316L 304 0.4 μm 粉尘水润滑 0.21705 7.67 S5 316L 316L 1.6 μm 脂润滑 0.11277 3.05 S6 316L 440C 0.8 μm 无润滑 0.16862 2.24 S7 440C 304 0.8 μm 脂润滑 0.09932 1.22 S8 440C 316L 0.4 μm 无润滑 0.18337 1.05 S9 440C 440C 1.6 μm 粉尘水润滑 0.16875 1.82 表 6 摩擦因数μ极差分析
因素 A B C D Kj1 0.21963 0.19692 0.18531 0.20880 Kj2 0.16615 0.18840 0.17900 0.21829 Kj3 0.15048 0.15094 0.17195 0.10918 Rj 0.06915 0.04598 0.01336 0.10911 表 7 总磨损量g极差分析
因素 A B C D Kj1 0.00613 0.00571 0.00437 0.00385 Kj2 0.00432 0.00393 0.00372 0.00573 Kj3 0.00136 0.00217 0.00373 0.00224 Rj 0.00477 0.00354 0.00065 0.00349 表 8 总磨损量方差分析表
因素 平方和
SS自由度
df均方
MSF值 F0.01(dfj, dfe) A 0.007 891 2 0.003 945 712 11.41 8.02 B 0.007 181 2 0.003 590 462 10.38 8.02 C 0.001 858 2 0.000 928 795 2.69 8.02 D 0.050 398 2 0.025 199 099 72.88 8.02 误差 0.003 112 9 0.000 345 778 总和 0.070 440 17 -
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