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首页> 外文会议>2003 International Thermal Spray Conference Vol.1; May 5-8, 2003; Orlando, Florida, USA >Modelling and Design of an Attachment to the HVOF Gun
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Modelling and Design of an Attachment to the HVOF Gun

机译：HVOF喷枪附件的建模和设计

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摘要

Although the HVOF process has shown to be a technological alternative to the many conventional thermal spray processes, it would be very advantageous to design a nozzle that provides improved performance in the areas of deposition efficiency, particle in-flight oxidation, and flexibility to allow coating of ceramic powders. Based on a numerical analysis, a new nozzle was modeled, designed, tested, and used to produce thermal spray coatings according to the industrial needs mentioned above. Performance of the new nozzle was investigated by spraying several coating materials including metallic (Nickel, MCrAlY, Stainless Steel), carbide (WC-Co), and ceramic (Al_2O_3) powders. Particle spatial distribution, velocity, and temperature corresponding to the new nozzle and the standard HVOF gun were compared. The new nozzle provides a superior particle spatial distribution, as well as higher and more uniform particle velocity and temperature.
机译：尽管已显示HVOF工艺是许多常规热喷涂工艺的技术替代方案，但设计喷嘴在沉积效率，飞行中的颗粒氧化和可涂覆性方面具有改进的性能将非常有利。陶瓷粉。在数值分析的基础上，根据上述工业需求对新型喷嘴进行了建模，设计，测试，并用于生产热喷涂涂层。通过喷涂几种涂料，包括金属（镍，MCrAlY，不锈钢），碳化物（WC-Co）和陶瓷（Al_2O_3）粉末，研究了新喷嘴的性能。比较了与新喷嘴和标准HVOF喷枪相对应的粒子空间分布，速度和温度。新的喷嘴提供了优越的粒子空间分布，以及更高，更均匀的粒子速度和温度。

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