Improving Quality of Seal Leak Test Product using Six Sigma

2nd International Manufacturing Engineering Conference; 3rd Asia-Pacific Conference on Manufacturing Systems

Malik, Abdullah Luthfi^1 ; Akbar, Muhammad^1 ; Irianto, Dradjad^1

Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung

40132, Indonesia^1

关键词: Critical to qualities;    Defect levels;    Delphi method;    Failure mode and effect analysis;    Fault tree analyses (FTA);    FMEA;    Organizational structures;    Polyurethane materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/114/1/012054/pdf
DOI  :  10.1088/1757-899X/114/1/012054

来源: IOP

【 摘 要 】

Seal leak test part is a polyurethane material-based product. Based on past data, defect level of this product was 8%, higher than the target of 5%. Quality improvement effort was done using six sigma method that included phases of define, measure, analyse, improve, and control. In the design phase, a Delphi method was used to identify factors that were critical to quality. In the measure phase, stability and process capability was measured. Fault tree analysis (FTA) and failure mode and effect analysis (FMEA) were used in the next phase to analize the root cause and to determine the priority issues. Improve phase was done by compiling, selecting, and designing alternative repair. Some improvement efforts were identified, i.e. (i) making a checklist for maintenance schedules, (ii) making written reminder form, (iii) modifying the SOP more detail, and (iv) performing a major service to the vacuum machine. To ensure the continuity of improvement efforts, some control activities were executed, i.e. (i) controlling, monitoring, documenting, and setting target frequently, (ii) implementing reward and punishment system, (iii) adding cleaning tool, and (iv) building six sigma organizational structure.