世界各地有很多钢管舞学校,在这里,姑娘们穿上12厘米的高跟鞋,就像芭蕾舞者套上舞鞋一般,随着音乐开始,在教练的带领下,用两手抓着钢管做动作,让自己慢慢绕着钢管走动,一边优雅的微笑,一边把身体的重量交付到钢管上。她们会将大 V 舞、...世界各地有很多钢管舞学校,在这里,姑娘们穿上12厘米的高跟鞋,就像芭蕾舞者套上舞鞋一般,随着音乐开始,在教练的带领下,用两手抓着钢管做动作,让自己慢慢绕着钢管走动,一边优雅的微笑,一边把身体的重量交付到钢管上。她们会将大 V 舞、女郎坐姿、火红太阳、埃及回旋等高难舞步组合起来,有时还会只用一条腿高高倒挂在钢管上。展开更多
The working principle of cement roller press and current development of wear resistance on the cement grinding system status at home and abroad was described. The main improvement of previous research on the wear resi...The working principle of cement roller press and current development of wear resistance on the cement grinding system status at home and abroad was described. The main improvement of previous research on the wear resistance of roller press was proposed from three aspects of wear-resistant material, roller press roller structure, and surface morphology.展开更多
The graphite （Gr）/MoS2 reinforced Mg self-lubricating composites were prepared through powder metallurgy. The composites were characterized for microstructure, physical, mechanical and wear properties. Gr/MoS2 p...The graphite （Gr）/MoS2 reinforced Mg self-lubricating composites were prepared through powder metallurgy. The composites were characterized for microstructure, physical, mechanical and wear properties. Gr/MoS2 phase in the composites was identified by XRD analysis. Microstructural observation showed that the Gr/MoS2 particles were homogeneously dispersed within the magnesium matrix. Micro-hardness was measured using an applied load of 5 g with a dwell time of 15 s at room temperature. Hardness of all the composites was measured to be in the range of VHN 29？34. The mechanical properties were studied using micro-hardness, tensile and compression tests. A fractographic analysis was performed using scanning electron microscope. The highest values of hardness, compressive strength and tensile strength were attained using Mg-10MoS2 composite. A pin-on-disk tribometer was used to measure the friction coefficient and the wear loss of the sintered composites. In addition to that, the friction and wear mechanism of the composites were systematically studied by worn surface characterization and wear debris studies using SEM analysis. The reduced friction coefficient and wear loss were achieved in MoS2 rather than Gr.展开更多
文摘世界各地有很多钢管舞学校,在这里,姑娘们穿上12厘米的高跟鞋,就像芭蕾舞者套上舞鞋一般,随着音乐开始,在教练的带领下,用两手抓着钢管做动作,让自己慢慢绕着钢管走动,一边优雅的微笑,一边把身体的重量交付到钢管上。她们会将大 V 舞、女郎坐姿、火红太阳、埃及回旋等高难舞步组合起来,有时还会只用一条腿高高倒挂在钢管上。
基金Supported by the Planning Project of Science and Technology Development of Jilin Province (09ZDGG001)~~
文摘The working principle of cement roller press and current development of wear resistance on the cement grinding system status at home and abroad was described. The main improvement of previous research on the wear resistance of roller press was proposed from three aspects of wear-resistant material, roller press roller structure, and surface morphology.
文摘The graphite （Gr）/MoS2 reinforced Mg self-lubricating composites were prepared through powder metallurgy. The composites were characterized for microstructure, physical, mechanical and wear properties. Gr/MoS2 phase in the composites was identified by XRD analysis. Microstructural observation showed that the Gr/MoS2 particles were homogeneously dispersed within the magnesium matrix. Micro-hardness was measured using an applied load of 5 g with a dwell time of 15 s at room temperature. Hardness of all the composites was measured to be in the range of VHN 29？34. The mechanical properties were studied using micro-hardness, tensile and compression tests. A fractographic analysis was performed using scanning electron microscope. The highest values of hardness, compressive strength and tensile strength were attained using Mg-10MoS2 composite. A pin-on-disk tribometer was used to measure the friction coefficient and the wear loss of the sintered composites. In addition to that, the friction and wear mechanism of the composites were systematically studied by worn surface characterization and wear debris studies using SEM analysis. The reduced friction coefficient and wear loss were achieved in MoS2 rather than Gr.
