(1. 南京航空航天大學(xué) 機(jī)電學(xué)院，南京 210016；
2. 上海交通大學(xué) 金屬基復(fù)合材料國(guó)家重點(diǎn)實(shí)驗(yàn)室，上海 200030；
3. 張家港華通噴射成形有限公司，張家港 215625)
摘 要: 介紹基底往復(fù)式噴射成形制備大壁厚管坯的工藝原理。研究單層沉積軌跡特性及其數(shù)學(xué)模型，針對(duì)沉積軌跡螺旋特性，分析基底運(yùn)動(dòng)參數(shù)(ω, v)對(duì)單層沉積特性的影響。建立多旋轉(zhuǎn)周期沉積輪廓疊加的單層沉積厚度模型，利用該模型在不同沉積軌跡螺距下，對(duì)沉積厚度進(jìn)行計(jì)算仿真，獲得保證均勻沉積面的運(yùn)動(dòng)參數(shù)優(yōu)化條件。在此基礎(chǔ)上，提出單層沉積厚度的簡(jiǎn)易計(jì)算方法，并通過(guò)實(shí)驗(yàn)進(jìn)行了驗(yàn)證，測(cè)量結(jié)果與預(yù)測(cè)值一致性較好。將研究結(jié)果用于實(shí)際噴射成形管坯生產(chǎn)中，制備得到表面形貌良好、性能穩(wěn)定的管坯。
關(guān)鍵字: 管坯；往復(fù)式噴射成形；參數(shù)優(yōu)化；沉積軌跡；沉積層厚度
reciprocating spray forming tubular
（1. College of Mechanical and Electrical Engineering, Nanjing University of Astronautics and Aeronautics,
Nanjing 210016, China;
2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200030, China;
3.. Zhangjiagang Huatong Spray Forming Co. Ltd., Zhangjiagang 215625, China）
Abstract:Process principle of reciprocating spray forming large thickness-wall tubular was analyzed. Behavior of the deposit track and corresponding model of single layer were studied. Aiming at the helix characteristic of the deposit track, the influences of mandrel movement parameters (ω, v) on the deposit behavior were analyzed. A model used to simulating the deposit thickness overlapped by the deposit profiles of multiple circumrotate cycles was established. This model was applied to simulate the deposit thickness with different pitch of the deposit track, and the optimum condition of movement parameters was obtained under which homogeneous deposit surface can be prepared. Based on the above optimum condition, a simple method was presented to calculate the deposit thickness and was verified through spray experiments. It is indicated that the simulated values are in agreement with the measurements. The results were applied in spray forming tubular, and a serial of tubular with good profile and stable performance were prepared.
Key words: tubular; reciprocating spray forming; parameters optimization; deposit track; deposit thickness
