立轴冲击破碎机锤头磨损形式的确定
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摘要
为研究立轴冲击破碎机锤头的磨损形式,在现有锤头磨损计算模型的基础上,结合赫兹接触理论和断裂力学,提出一种新的优化计算模型.通过离散单元法仿真分析锤头受力特性和颗粒运动特性,并与实验后的锤头表面微观形貌进行对比.实验结果表明:优化模型具有合理性,模拟仿真手段正确,具有可行性;并确定了冲击磨损是造成锤头磨损的主要形式.
To determine the hammer wear type of vertical shaft impact crusher, a new optimization model was proposed based on the existing hammer wear calculation models, together with Hertz contact theory and fracture mechanics. The discrete element method was used to analyze the force characteristics of the hammer and the particle motion characteristics, and the simulated morphology of hammer surface was compared with that after used. The results indicate that the impact wear was the hammer wear type of vertical shaft impact crusher. The research also indicates that the optimization model is reasonable and the simulation method is feasible and correct.
To determine the hammer wear type of vertical shaft impact crusher, a new optimization model was proposed based on the existing hammer wear calculation models, together with Hertz contact theory and fracture mechanics. The discrete element method was used to analyze the force characteristics of the hammer and the particle motion characteristics, and the simulated morphology of hammer surface was compared with that after used. The results indicate that the impact wear was the hammer wear type of vertical shaft impact crusher. The research also indicates that the optimization model is reasonable and the simulation method is feasible and correct.
引文
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[17] POWELL M,WEERASEKARA N,COLE S,et al.DEM modelling of liner evolution and its influence on grinding rate in ball mills[J].Minerals Engineering,2011,24(3/4):341-351.DOI:10.1016/j.mineng.2010.12.012.
[18] 邢大伟,房怀英,杨建红,等.立轴冲击破碎机转子出料特性仿真实验[J].华侨大学学报(自然科学版),2015,36(5):500-505.DOI:10.11830/ISSN.1000-5013.2015.05.0500.
[19] 路文典.立轴冲击式破碎机制砂规律与效果改进研究[J].云南水力发电,2007,23(6):90-93.DOI:10.3969/j.issn.1006-3951.2007.06.023.
[20] ANTONOV M,PIRSO J,VALLIKIVI A,et al.The effect of fine erodent retained on the surface during erosion of metals,ceramics,plastic,rubber and hardmetal[J].Wear,2016,354/355:53-68.
[21] ALLEN C,SHEEN M,WILLIAMS J,et al.The wear of ultrafine WC-Co hard metals[J].Wear,2001,250(1-12):604-610.DOI:10.1016/s0043-1648(01)00667-6.
[22] 龚宝龙.煤液化高温调节阀流动磨损预测及校核研究[D].杭州:浙江理工大学,2014.
[2] 郑鸣皋.略谈制砂设备的开发[J].矿山机械,2004(1):18-22.
[3] DALLIMORE R,FENSOME G,KJAERRAN K.Vertical shaft impact crusher:US,US8042756[P].2011-10-25.
[4] MURATA H,CHIJI M,HINO N,et al.Analysis of wear in impact crushers[J].Resources Processing,1991,38(1):9-15.DOI:10.4144/rpsj1986.38.9.
[5] MARSHALL A,PARRY T,WILSON J.Operational wear in the impeller of a vertical shaft impact breaker[J].Wear,1993,162/163/164:1022-1024.DOI:10.1016/0043-1648(93)90115-3.
[6] CLEARY P,SINNOTT M.Simulation of particle flows and breakage in crushers using DEM:Part 2:Impact crushers[J].Minerals Engineering,2015,74:163-177.DOI:10.1016/j.mineng.2014.11.017.
[7] 吴明清.Sandvik RP系列立轴冲击式破碎机的性能和应用[J].矿山机械,2008(13):71-73.
[8] 李本仁.国外立轴冲击式破碎机发展概况[J].矿山机械,2004(1):13-14.
[9] 吕龙飞,侯志强,廖昊.基于离散元法的立轴破转子磨损机制研究[J].中国矿业,2016,25(增刊2):312-316.DOI:10.3969/j.issn.1004-4051.2016.z2.073.
[10] YANG Jianhong,FANG Huaiying,LUO Man.Load and wear experiments on the impact hammer of a vertical shaft impact crusher[J].2015,103(1):012041.DOI:10.1088/1757-899X/103/1/012041.
[11] 刘敏芳.立轴冲击式破碎机破碎及磨损仿真研究[D].济南:济南大学,2008.
[12] 邹付群,成思源,李苏洋,等.基于Geomagic Qualify软件的冲压件回弹检测[J].机械设计与研究,2010,26(2):79-81.DOI:10.13952/j.cnki.jofmdr.2010.02.002.
[13] SHELDON G,FINNIE I.On the ductile behavior of nominally brittle materials during erosive cutting[J].Journal of Engineering for Industry,1966,88(4):387-392.DOI:10.1115/1.3672666.
[14] JOHNSON K.Contact mechanics[J].Journal of Tribology,1985,108(4):96-119.DOI:10.1017/CBO978113917 1731.
[15] GREWAL H,SINGH H,AGRAWAL A.A phenomenological model for slurry erosion prediction of thermal spray coatings[J].Tribology Letters,2014,56(1):119-132.DOI:10.1007/s11249-014-0391-3.
[16] FINNIE I.Some observations on the erosion of ductile metals[J].Wear,1972,19(1):81-90.DOI:10.1016/0043-1648(72)90444-9.
[17] POWELL M,WEERASEKARA N,COLE S,et al.DEM modelling of liner evolution and its influence on grinding rate in ball mills[J].Minerals Engineering,2011,24(3/4):341-351.DOI:10.1016/j.mineng.2010.12.012.
[18] 邢大伟,房怀英,杨建红,等.立轴冲击破碎机转子出料特性仿真实验[J].华侨大学学报(自然科学版),2015,36(5):500-505.DOI:10.11830/ISSN.1000-5013.2015.05.0500.
[19] 路文典.立轴冲击式破碎机制砂规律与效果改进研究[J].云南水力发电,2007,23(6):90-93.DOI:10.3969/j.issn.1006-3951.2007.06.023.
[20] ANTONOV M,PIRSO J,VALLIKIVI A,et al.The effect of fine erodent retained on the surface during erosion of metals,ceramics,plastic,rubber and hardmetal[J].Wear,2016,354/355:53-68.
[21] ALLEN C,SHEEN M,WILLIAMS J,et al.The wear of ultrafine WC-Co hard metals[J].Wear,2001,250(1-12):604-610.DOI:10.1016/s0043-1648(01)00667-6.
[22] 龚宝龙.煤液化高温调节阀流动磨损预测及校核研究[D].杭州:浙江理工大学,2014.
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