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    题名 作者 年代 出处 被引量
1头孢噻肟酸合成新方法研究显示文摘研究了以二甲基乙酰胺 ( DMA)为催化剂 ,7-氨基头孢烷酸 ( 7- ACA)与苯并噻唑活性酯( MEAM)为原料 ,一步合成头孢噻肟酸的实验过程。探讨了催化剂用量、反应物用量、反应溶剂选择、结晶 p H等对反应的影响 ,在最佳条件下 ,头孢噻肟酸的合成摩尔收率超过 97%方时亮 丁自更 邵明华 2001化学世界2001,42,8:17
2Improvement of machining quality of copper-plated roll mold by controlling temperature variation显示文摘Micro prism film used in LCD industry can be manufactured by roll to roll method with copper-plated roll mold. As copper-plated roll mold is getting larger, pitch error is getting severer. The pitch error drops the quality of micro prism film. The main cause of the pitch error was investigated during machining large roll mold whose machined length was 1 200 mm. The temperature of machining system was elevated during machining roll mold, and this elevation induced thermal expansion of the system. The temperature variation around the roll mold also made thermal expansion of the roll mold. The amount of thermal expansion had strong relationship to the amount of pitch error. Therefore, the roll mold was machined after warming-up of machining system and precise temperature controller around copper-plated roll mold was installed, which minimized the temperature variation. Finally, precise micro prism patterns without pitch error were machined on the large roll mold.Tae-Jin JE Eun-Chae JEON Sang-Cheon PARK Doo-Sun CHOI Kyung-Hyun WHANG Myung-Chang KANG 2011Transactions of Nonferrous Metals Society of China2011,21,A01:4
3辊筒表面微沟槽超精密加工精度影响因素的研究显示文摘研究了采用仿形法加工辊筒模具上微沟槽时,影响超精密加工精度的因素,分析了主轴转速和切削深度对辊筒模具上微沟槽表面粗糙度和形状精度的影响,探索了最优加工参数,并利用最优参数成功实现辊筒表面上正弦微沟槽的加工。因此,该成果可为实际加工提供指导,并达到避免重复性加工、节约加工时间和提高加工效率的目的。张俊凤 王素娟 2020制造技术与机床2020,,10:4
4超精密切削镍磷合金镀层模辊及刀具磨损特性研究显示文摘研究了金刚石刀具对具有镍磷合金(NiP)合金镀层的压印模辊进行长距离连续切削时刀具的磨损情况。首先,通过金刚石超精密辊筒车床对大尺寸NiP合金镀层模辊进行精密V槽切削。然后,利用加工好的V槽模辊进行卷对卷压印实验,通过压印片材上不同位置的表面粗糙度测量分析了刀具从切削开始到结束过程中的磨损情况。最后,利用Advant Edge软件进行了有限元模拟切削过程中刀尖温度分布状态,同时对比了切削过程中不同位置处刀尖的轮廓线。实验结果表明:金刚石刀具切削NiP合金镀层模辊时刀具的磨损过程是有一个先慢后快的规律,即刀尖切削刃发生石墨化转变产生为崩刃以后,刀具的磨损速率明显加快。于海鹏 2017机械设计与制造2017,,7:0
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