本文關鍵詞：糖基快速成型工藝參數的優(yōu)化　出處：《西安科技大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： 糖基材料 快速成型 激光燒結 工藝參數 正交實驗

【摘要】：糖基快速成型是基于選擇性激光燒結技術的一種快速成型方法,成型材料來源廣泛,綠色環(huán)保,成本低廉,對人體和環(huán)境無危害,且可以食用。因此,對糖基快速成型機理和工藝參數進行研究具有重要的理論意義和實用價值。本論文根據糖基快速成型方法的成型要求,尋求適合于該方法的糖基材料,并對該糖基材料的性質與特點進行了研究;分析了糖基快速成型設備的主要性能參數,研究了糖基快速成型的成型機理;理論分析了影響糖基快速成型工藝的工藝參數,重點對成型過程中可以調節(jié)控制的工藝參數如激光功率、掃描間距、掃描速度、鋪粉厚度、預熱溫度等幾個重要的工藝參數進行了分析,并通過正交設計試驗對激光功率、預熱溫度、掃描速度、鋪粉厚度四個工藝參數進行正交設計試驗分析,以其制件的抗彎強度為衡量指標,通過正交設計試驗法尋求出最優(yōu)工藝參數組合。對所得到的最優(yōu)工藝參數進行實驗驗證。首先理論分析了影響糖基快速成型制件的尺寸精度和強度的因素,其次對影響其尺寸精度和強度的主要可控的工藝參數通過單因素實驗進行了驗證,最后在不同的工藝參數組合下燒結制件,并測量其尺寸精度和強度,發(fā)現在最優(yōu)工藝參數組合下制件的尺寸精度和強度是最好的,證明用正交設計試驗法獲得最優(yōu)工藝參數是可行的,同時此研究不僅具有重要的理論意義,而且對快速成型技術的應用具有一定的參考價值。
[Abstract]:Sugar-based rapid prototyping is a kind of rapid prototyping method based on selective laser sintering technology. It has a wide range of material sources, green and environmental protection, low cost, no harm to human body and environment, and can be edible. It is of great theoretical significance and practical value to study the mechanism and technological parameters of sugar base rapid prototyping. According to the forming requirements of the sugar base rapid prototyping method, this paper seeks sucrose base materials suitable for this method. The properties and characteristics of the sugar-based material were also studied. The main performance parameters of sugar base rapid prototyping equipment were analyzed and the mechanism of sugar base rapid prototyping was studied. Theoretical analysis of the influence of sugar based rapid prototyping process parameters, focusing on the process parameters such as laser power, scanning distance, scanning speed, powder thickness can be adjusted during the molding process. Several important process parameters, such as preheating temperature, were analyzed, and the orthogonal design tests were carried out on four process parameters: laser power, preheating temperature, scanning speed and powder laying thickness. The bending strength of the parts is taken as the index. The optimal process parameters were obtained by orthogonal design test. The optimal process parameters were verified by experiments. Firstly, the factors affecting the dimensional accuracy and strength of sugar based rapid prototyping were analyzed theoretically. Secondly, the main controllable process parameters which affect its dimension precision and strength are verified by single factor experiment. Finally, the size precision and strength of the sintered parts are measured under different process parameters combination. It is found that the dimension precision and strength of the parts are the best under the combination of the optimal process parameters, which proves that it is feasible to obtain the optimal process parameters by orthogonal design test, and this research is not only of great theoretical significance. And it has certain reference value for the application of rapid prototyping technology.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB30;TG665

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