共查询到19条相似文献,搜索用时 62 毫秒
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ASS电弧喷涂快速制模技术,可大大缩短制模周期,其制模周期由几个月缩短到几天,提速产品开发,最大限度地适应市场竞争的需要。该技术广泛适用于各类简易快速模具制造,具有十分良好的经济效益。 相似文献
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对等离子弧喷涂法快速制模技术进行了基础实验研究。介绍了等离子弧喷涂法快速制模的工艺过程,分析了影响等离子弧喷涂成形的主要因素,试验研究了等离子弧喷涂层的结构和质量,井将该技术用于模具的快速制造。 相似文献
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对快速成型和电弧喷涂相结合的快速制模关键工序进行了实验研究和分析,包括原型零件快速制造、电弧喷涂材料选择、电弧喷涂工艺参数确定等;同时还对这种快速制模方法的优缺点进行了评价。 相似文献
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金属电弧喷涂快速制模工艺,是近几年发展起来的新技术,在制造业中发挥了越来越重要的作用。通过对其制模工艺的研究,得出了最佳的工艺参数,展望了快速模具制造技术的发展前景。 相似文献
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对快速成型和电弧喷涂相结合的快速制模技术的关键工序进行了实验研究。分析,如快速原型零件的制作,电弧喷涂材料的选择。电弧喷涂工艺参数的确定等,同时对这种快速制模方法的优缺点进行了阐述。 相似文献
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Faster,Less Expensive Dies Using RSP Tooling 总被引:2,自引:0,他引:2
James R. Knirsch 《Journal of Materials Engineering and Performance》2007,16(4):432-439
RSP Tooling is an indirect spray form additive process that can produce production tooling for virtually any forming process
and from virtually any metal. In the past 24 months a significant amount of research and development has been performed. This
resulted in an increase in the basic metallurgical understanding of what transpires during the rapid solidification of the
metal, significant improvements in the production machine up time, ceramic developments that have improved finish, process
changes that have resulted in a shorter lead time for tool delivery, and the testing of many new alloys. RSP stands for Rapid
Solidification Process and is the key to the superior metallurgical properties that result from the technology. Most metals
that are sprayed in the process leave the machine with the same physical properties as the same metal normally achieves through
heat treatment and in some cases the properties are superior. Many new applications are being pursued including INVAR tools
for aerospace composite materials, and bimetallic tools made from tool steel and beryllium copper for die casting and plastic
injection molding. Recent feasibility studies have been performed with tremendous success.
This article was presented at Materials Science & Technology 2006, Innovations in Metal Forming symposium held in Cincinnati,
OH, October 15-19, 2006. 相似文献
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P. S. Fussell H. O. K. Kirchner F. B. Prinz L. E. Weiss 《Journal of Thermal Spray Technology》1994,3(2):148-161
Shells made of sprayed ferrous materials are feasible for prototype and limited production tooling. A systematic study of
the microstructure of arc-sprayed ferrous structures is presented, demonstrating why these structures display a degree of
mechanical anisotropic behavior. The results of controlling oxide formation with inert atomization gases are given, and methods
for tailoring the composition and orientation of the lamellae through robotically controlled deposition are discussed. 相似文献
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The effect of severe substrate topography on the microstructure of thermally sprayed coatings has been relatively neglected,
but is critical in controlling the performance of thick electric arc sprayed steel shells for rapid tooling applications.
This paper shows how the spray angle and the atomizing gas pressure control the distribution of porosity and oxide in steel
sprayed in and around cylindrical holes of different diameter and depth. Droplet splashing and the secondary deposition of
splash droplets caused systematic variations in microstructure. In particular, the origin of the phenomenon of “bridging,”
the premature closure of features, has been revealed by microstructural analysis and explained in terms of the trajectories
of droplets. The filling of features with higher-quality material can be aided by using a low atomizing gas pressure, reducing
the oxygen partial pressure of the surrounding atmosphere and careful selection of the spray angle. 相似文献