共查询到10条相似文献,搜索用时 62 毫秒
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武汉钢铁(集团)公司第一炼钢厂方坯连铸机结晶器振动装置采用的是目前国际上比较先进的液压振动技术,但使用中一直存在着突发性的停振现象,本文对产生停振的原因及解决对策进行了深入的分析与探讨。 相似文献
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Taohong Zhang Tianyuan Xiao Bingru Yang 《The International Journal of Advanced Manufacturing Technology》2008,37(7-8):690-697
This paper focuses on solving the bottleneck problem-process simulation in virtual manufacture (VM), a solution of whole process
simulation including geometrical aspect and physical aspect is put forward in the domain of laser surface hardening. For the
difference of mechanisms among the different laser machining modes, the architecture integrated with the common and the distinction
is constructed for the whole process simulation, and it is suitable for all laser machining modes. The virtual processing
equipments for the laser machining are built by IGRIP software. The processing model is the map of the processing mechanism
and the different models mapping to different machining modes. The whole process modeling of laser surface hardening is described.
The extracted modeling parameters comprise geometrics, laser characters, material properties and mechanical properties, the
model is built by artificial neural network method, and the finished model is embedded to IGRIP by quadric development. The
whole virtual processing is implemented combining the whole model and the visualization simulation, the simulation result
including the joints movement of the processing robot, collision-free report, processing effect prediction etc. are output.
The analysis for the simulation result and the influence of parameters on processing effect are discussed to guide the real
laser machining.
This work is financially supported by the Key Projects for Device Development (No.[1997]167) and for Knowledge Innovation
(No.KGCX1-11) of the Chinese Academy of Sciences, which are gratefully acknowledged. 相似文献
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Injection molding is a plastic transformation process to produce complex parts; an efficient way of decorating a part is to do it during the molding cycle, introducing decorated film or fabric inside the mold.One of the most important tools to optimize the injection cycle is to make simulations, but the recognized software do not have potential to simulate IMD (In Mold Decoration) process because the behavior of the polymer flowing over fabric is unknown.This article is focused on the design of a methodology to characterize polymer rheological behavior from a macroscopic point of view, in order to estimate a useful viscous model for use in CAE software by means of a spiral mold and pressure sensors located in it, instead of a rheometer. However, the test temperature of polymer is not constant during the test when the spiral mold method is used, and it is necessary to introduce corrections.For authors, this study is a novelty because any author has used a spiral mold to characterize the rheological behavior of polymers injected over fabric, and the exposed methodology will be very useful to adjust IMD pressure drop on computer programs. 相似文献
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为了优化拖车连杆头铸件的浇注工艺,以Pro/E软件为前处理平台,以ProCAST软件为模拟平台,结合工厂实际生产的需要,对拖车连杆头铸件进行了数值模拟。通过对模拟结果与试制结果的比较,在充分肯定ProCAST软件分析准确性的基础上,从浇注系统和补缩系统入手,对铸件进行了工艺参数的优化设计。研究结果表明:通过充型凝固数值模拟分析以进行工艺参数的优化,有效地避免了铸件体中出现缺陷,提高了产品的质量。 相似文献