What is the reason why the same defect keeps coming back no matter how many times I convey it? The key to correction.
Although the countermeasure document arrives, the same defect arrives again. The cause is that the countermeasures have not been implemented down to the conditions of the process. This explains how to proceed with corrections with the subcontractor.
The countermeasure document has arrived. Yet, the same defects are mixed in the following month. ────────────── ■Cause of Occurrence Most of the countermeasure documents end with "work carefully" and "strengthen inspections." This means that once the person in charge changes, it will revert to the original state. ■Truth The recurring defects are caused by the fact that the conditions of the process are not defined by numbers. The temperature of the degreasing solution, the viscosity of the paint, the film thickness, and the temperature and time of curing. If there is no record of even one of these, we cannot trace back to understand why the defect occurred. ■Improvement Measures When requesting corrections, we will confirm which numbers were changed in which process. Both parties will have a sample of the acceptable limits for defects and align the criteria for pass or fail. We will receive records for three lots after the changes and confirm the effectiveness before concluding. Eiwa Kogei has processes from chemical film treatment to curing and can consult on separating causes. Please download the materials summarizing the confirmation points of the process for your use.
Inquire About This Product
Related Videos
basic information
Theme: Prevention of defects recurrence. Management items: Degreasing liquid temperature, paint viscosity, film thickness, baking temperature and time, limit samples, records of changed lots.
Price range
Delivery Time
Applications/Examples of results
Quality control of outsourced painting, selection and transition of new outsourcing partners, and the approach to corrective actions in the purchasing and quality assurance departments. Training materials for new employees.
catalog（2）
Download All Catalogs
Company information
We are not just a "subcontracted painting factory." Established in 1958, our company has a foundation of painting technology and also specializes in chemical treatment, stripping, and cleaning, functioning as the "external surface treatment department" in your organizational chart. Based on our philosophy of "preparation is eight-tenths of the work," we emphasize participation from the "upstream process" before the drawings are finalized. We conduct test painting on a wide range of metals and difficult materials, and we produce the entire process from assembly, packaging, to delivery, thereby reducing your management workload. Additionally, by being able to perform zinc phosphate treatment in-house, we achieve stable painting quality. Furthermore, our micro-heating stripping technology, which does not use chemicals, maintains the electrical state of the "jigs (hangers)" that influence painting quality. Our approach of "pre-treatment determines painting quality" ensures the stability of the paint film during mass production. Rather than simply "applying specified standards," we work backwards to achieve optimal painting specifications and prevent scratches during transportation, sparing no effort in thorough discussions from the outset. This diligent preparation is the shortest path to preventing rework and minimizing total costs. From the development stage, please utilize the expertise of our specialists as part of your production line.
