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注射和塑化相分离提高注塑质量
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作者 Thomas Kamps Johannes Wortberg michael neumann 《现代制造》 2002年第7期88-88,90,92,共3页
用螺旋推进器生产注塑件会遇到极限。较好的办法是把注射过程和塑化过程相互分离开来。为此在塑料注入时可以用挤出机来进行塑化作业,用熔料储存器对熔料进行中间储存。这样即可实现原料的连续熔化,注射过程能更好地与成型过程相协调。... 用螺旋推进器生产注塑件会遇到极限。较好的办法是把注射过程和塑化过程相互分离开来。为此在塑料注入时可以用挤出机来进行塑化作业,用熔料储存器对熔料进行中间储存。这样即可实现原料的连续熔化,注射过程能更好地与成型过程相协调。不过要达到这一点,需要设计一个新的驱动方案。 展开更多
关键词 注射 塑化 注塑质量 塑料加工
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The geoscience profession’s response to COVID-19 pandemic – An European Federation of Geologists’ overview
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作者 Marko Komac michael neumann +4 位作者 Glen Burridge Tamas Miklovicz Alberto Sánchez Miravalles María A.López Ruth Allington 《Episodes》 2022年第2期113-123,共11页
European Federation of Geologists(EFG)represents more than 45,000 professional geologists from 27 European countries and like other professions also geologists and geoscientists have been strongly affected by the COVI... European Federation of Geologists(EFG)represents more than 45,000 professional geologists from 27 European countries and like other professions also geologists and geoscientists have been strongly affected by the COVID-19 pandemic.One of the main purposes of EFG is offering support to its national associations being institutional constituents and their individual members,and based on this mission an assessment on the first impact of the pandemic was made in two steps.First,an on-line survey was performed to gather the framing issues for the virtual meeting at which representatives of national associations have elaborated on the responses and through the discussion formulated issues in more detail,suggested solutions and agreed on future measures to minimize the negative effects of the pandemic. 展开更多
关键词 solutions geoscience virtual meeting online survey national associations European Federation Geologists COVID impact
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