A公司萃取工序铌液除钨质量控制研究

发布时间：2018-06-08 14:26

本文选题：质量管理 + 稳健设计　；参考：《华南理工大学》2015年硕士论文

【摘要】：稳健设计作为一种降低产品成本、提高产品质量的有效方法,自20世纪70年代问世以来,得到国内外学者越来越多的重视,并在工程实际中得到了广泛应用。A公司拥有五氧化二铌制造生产线,其生产技术与国内同行相近,采用高端材料生产高端产品,产品成本不具备市场优势。为降低产品成本、提升产品竞争力、增加企业效益,A公司拟扩展原材料适用范围,达到使用低端材料生产出高端产品的目的,这需要对关键工序——铌液萃取工序的工艺进行科学合理的优化和改良,提高该工序除钨效果。针对这一问题,本文采用稳健设计理论与方法对萃取工艺进行了研究,优化了其工艺参数,成功扩大了原材料的适用范围,达到了降低生产成本的目的。主要内容如下:1)叙述铌液萃取工艺的发展和现状,明确影响除钨效果的因素。2)介绍一些关于全面质量管理和稳健设计的原理及方法,说明稳健设计对A公司铌液萃取工艺的适用性。3)通过稳健设计思路进行实验,优化和改善萃取工艺设计,并利用稳健设计的结果,找出对除钨效果有显著影响的因素,并采取对应措施,改善萃取工序的现场。4)通过批量生产试验验证稳健设计,确定合适的工艺参数,并通过对比分析工艺改善前后产品经济技术指标,得出稳健设计结果切实可行结论。5)指出本文研究工作的不足,指明今后改进的方向。
[Abstract]:As an effective method to reduce product cost and improve product quality, robust design has been paid more and more attention by scholars at home and abroad since it came out in 1970s. And it has been widely used in engineering practice. A company owns niobium pentoxide manufacturing line, and its production technology is close to that of domestic counterparts. High-end materials are used to produce high-end products, and the cost of the products does not have market advantages. In order to reduce the cost of products, enhance the competitiveness of products and increase the efficiency of enterprises, the company intends to expand the scope of application of raw materials to achieve the purpose of using low-end materials to produce high-end products. It is necessary to optimize and improve the technology of the key process-niobium liquid extraction process scientifically and reasonably to improve the effect of removing tungsten in this process. In order to solve this problem, this paper studies the extraction process by using robust design theory and method, optimizes its technological parameters, successfully expands the applicable range of raw materials and achieves the purpose of reducing production cost. The main contents are as follows: (1) describing the development and present situation of niobium liquid extraction process, and defining the factors that affect the effect of tungsten removal.) introducing some principles and methods of total quality management and robust design. It shows that robust design is suitable for A company niobium liquid extraction process. 3) by means of robust design idea, the extraction process design is optimized and improved. By using the results of robust design, the factors that have significant influence on the removal of tungsten can be found out. Corresponding measures are taken to improve the field .4 of the extraction process. The robust design is verified by the batch production test, the appropriate process parameters are determined, and the economic and technical indexes of the product before and after the improvement of the process are compared and analyzed. The feasible conclusion of robust design result. 5) pointing out the deficiency of the research work in this paper and pointing out the direction of improvement in the future.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ135.12

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