刘佳,都建京,王晔.基于精益六西格玛方法的K418C壳型小棒质量控制研究[J].精密成形工程,2020,12(2):114-120.
LIU Jia,DU Jian-jing,WANG Ye.Quality Control on K418C Shell Type Stick Based on Lean Six Sigma Approach[J].Journal of Netshape Forming Engineering,2020,12(2):114-120. |
| 基于精益六西格玛方法的K418C壳型小棒质量控制研究 |
| Quality Control on K418C Shell Type Stick Based on Lean Six Sigma Approach |
| 投稿时间：2019-07-03 修订日期：2020-03-10 |
| DOI：10.3969/j.issn.1674-6457.2020.02.019 |
| 中文关键词: 精益六西格玛方法 K418C壳型小棒 质量控制 氧化物夹杂 |
| 英文关键词: lean six sigma approach K418C shell type stick quality control oxide inclusion |
| 基金项目: |
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| 摘要点击次数: 2468 |
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| 中文摘要: |
| 目的 通过改善K418C壳型小棒的合格率，提高生产效率并降低生产成本。方法 通过精益六西格玛的方法、DMAIC II模型和D-M-A-I-C改进的5个阶段，利用因果图、方差分析等分析手段，结合扫描电镜和能谱分析等检测手段，准确定义出坩埚掉砂级别和壳型吸灰时长为两个影响产品质量的关键因素。结果 采用精益方法对这两个因素进行了优化和改善，工艺流程优化后的批量生产中，由于氧化物夹杂而导致报废的小棒根数大大降低，改善效果非常明显，其DPMO由改善前的53 034降低至10 355。结论 该方法的运用不仅有效提高了产品的合格率，而且节省了大量的材料费，提高了企业的竞争力。 |
| 英文摘要: |
| To improve the qualification rate of K418C shell type stick, increase the production efficiency and reduce the production cost, the lean six sigma approach was introduced in this paper. The two key factors affecting the quality of products-crucible off sand level and the shell mold suck ash time were accurately defined with DMAIC II model, the D-M-A-I-C five stages of improvement and the analysis methods, such as causality diagram and variance analysis, in combination with scanning electron microscopy and energy spectrum analysis. After optimization of these two factors by lean methods, the number of scrap stick caused by oxide inclusions was reduced greatly in batch manufacturing. The improvement was very obvious. The DPMO reduced from 53 034 to 10 355 after the process optimization. It not only effectively improves the qualification rate of products, but also saves a lot of cost of raw materials, and therefore improves the competitiveness of the enterprises. |
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