B 公司作为一家专业生产工业卷材涂料的跨国公司，其产品主要应用
于自动化的彩涂生产线。将涂料涂覆于钢板及铝板上，在数秒钟的加热固
化后即可成为彩涂板成品并重新卷成卷备用，在客户处可以加工成建筑物
内外墙和屋顶板面以及用于家用电器设备面板。分析近期涂料产品投诉数
据，发现其颜色投诉的比例占有超过50%的比例，究其原因发现颜色投诉的
问题基本都是因为批次间的颜色差异引起的。为了改善涂料产品不同批次
间的颜色出现差异的质量问题，本文提出导入六西格玛的管理方法。运用
DMAIC 模型构建针对 B 公司涂料批次间色差稳定性的改进研究框架。以颜色
A 产品为例，首先界定需要解决的问题---过程能力指数（Complex Process
Capability index，简称为 Cpk）是否合格；然后运用实际的测量结果，通过
Minitab 软件分析 B 公司涂料产品批次间色差的现状及问题；接着对 B 公司
量测系统进行分析，了解量测系统是否可信，再运用鱼骨图、DOE（Design
of Experiment）等质量工具对 B 公司涂料的批次间色差稳定的影响因素进行
分析，找出相应的改进方案；之后根据所提供的方案进行实际涂料生产的
改进，验证方案的改进效果。最后为保证该方案的长期有效实施，将所有
的改进措施用文件的形式进行制度化管理
论文采用 DMAIC 方法，借助 Mintab 等软件工具，应用 Cpk 对生产过
程进行监控，便于及时发现问题、分析问题、解决问题，实现产品问题的
不断改进及过程管理的不断完善，最终通过提高 Cpk 的方法解决不同批次
间的色差稳定性问题，从而降低客户对涂料不同批次间的颜色投诉，减少
处理质量问题的成本，增加企业信誉度，最终达到提高客户满意度的目的。摘要
Ⅰ
关键词：工业卷材涂料，批次间色差稳定性，质量管理体系，六西格
玛，过程能力指数ABSTRACT
III
STABILITY IMPROVEMNET ON COLOR DIFFERENCE OF
THE PAINT PRODUCTS BETWEEN BATCH TO BATCH IN
COMPANY B
ABSTRACT
With increasing industrialization developed in paint and coating application field, the batches are
greatly growth for a same coating color according to the growing volume of paint consumption. To avoid
the color difference in a same project with paints batch to batch, Color stability between batches should be
the critical performance to be solved urgently for a paint manufacture company. B company is a
multinational corporation, which specially makes coil coatings, and its products mainly apply on the
automatic color coil coating line. The paint, curing in some seconds, is coated on the metallic substrate, for
example, steel, aluminum etc., then it will be recoiled as a finish products. The color coils can be used as
the wall or roof for the buildings and door or body side of domestic appliance also. B company did the
analysis for recent customer complaints, the color difference account for 50% up. All the color complaints
are caused by the color difference between batch to batch. in this paper, To solve the color problem issue,
six sigma program was installed to build the structure for the improvement of stability of color difference
between batch to batch with DMAIC model. Use product PE silver as the sample, define the problem,
Complex Process Capability index(Cpk), which need to be solved, then analyze the current color data to
understand the quality situation, after that do the MSA(measurement system analysis) to check the MS can
adapt to the test or not, do analyze for color stability between batch to batch of B company with some
quality tools just like fishbone diagram and DOE（Design of Experiment）, and try to find the influence
factor, then find the solutions, make producton following the solutions and check the result to verify the
effect of action. Finally in order to ensure the long-term effective implementation of the scheme, all files,
including SOP, WI and so on, should be controlled with document. The Cpk, calculated by the software of
Mintab, is used as performance of production process and monitor the whole process including raw
materials, the process of production, QC and delivery, people analyze the trend of Cpk graph to find and
solve the problem when it goes down, and amend the documents of process management. Which will
decrease the quantity of complains, and save cost, and increase credit of company and satisfaction of
customers as the target.
Wu Jianbo(MBA)
Supervised by
KEY WORDSThe stability of color difference in batches, Industrial coil coatings, Quality
management system, six sigma, DMAIC, Cpk
_Wang Xiaofeng目录
IV
目录
摘要... I
ABSTRACT III
目录 IV
图目录........ VI
表目录.......VII
第1章绪论...1
1.1研究问题的提出....1
1.2论文研究的意义....3
1.3研究内容....4
1.4论文的研究方法和技术路线........4
第2章理论及文献综述.......6
2.1涂料行业的色差控制现状6
2.2产品过程控制的现状分析7
2.3六西格玛质量管理的方法及应用8
2.4文献述评..11
第3章B公司涂料色差控制现状及问题分析......12
3.1 B公司涂料产品分析.........12
3.2 B公司涂料产品的客户需求分析.15
3.3 B公司质量管理体系.........16
3.4 B公司涂料产品存在的问题.........18
3.5本章小结...19
第4章涂料生产批次间色差稳定性改进方案.....20
4.1引入六西格玛的必要性分析......20
4.2引入六西格玛的可行性分析.......20
4.3基于DMAIC的批次间涂料产品色差稳定性改进框架设计......22目录
V
4.4本章小结...23
第5章基于DMAIC的批次间色差稳定性改进研究........24
5.1界定阶段（D阶段）........24
5.2测量阶段（M阶段）......27
5.3分析阶段（A阶段）........31
5.4改进阶段（I阶段）.........36
5.5控制阶段（C阶段）........37
5.6批次间色差稳定性改进的效果分析......39
5.7本章小结......
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