Insufficient degreasing leads to poor adhesion. Explaining the importance of often-overlooked processes.
In the automotive parts industry, particularly in the painting of critical components like engine blocks, high adhesion and durability are required. Poor painting can directly lead to a decline in product performance and early deterioration, potentially compromising reliability. Specifically, release agents and machining oils that adhere to aluminum die-cast products are difficult to detect visually but can cause poor paint adhesion, blisters, and pinholes. These defects may not be apparent in the initial stages but can later lead to peeling and performance degradation. If the degreasing process is shortened to improve productivity, it is also necessary to consider the risk of increased costs for repainting or handling complaints. As the first step in addressing poor adhesion, standardizing the degreasing process and reviewing management conditions are essential. 【Application Scenarios】 - Painting of automotive parts like engine blocks that require high adhesion - Painting of aluminum die-cast products that are prone to adhering release agents and machining oils - Aiming to reduce repainting and complaint handling costs due to poor painting 【Benefits of Implementation】 - Improved product quality through reduced paint adhesion issues - Suppression of blister and pinhole occurrences - Reduction of repainting and complaint handling costs - Stabilization of the entire painting process and enhancement of reliability
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【Features】 - Explanation of factors causing poor adhesion, blisters, and pinholes due to insufficient degreasing - Presentation of the effects of oil that cannot be visually confirmed and countermeasures - Explanation of the importance of standardizing the degreasing process and reviewing management conditions - Provision of materials summarizing defect cases and improvement points - Rapid repainting response in case of painting defects (handling 5,000 pieces within 3 days) 【Our Strengths】 Eiwa Kogei has been dedicated to metal surface treatment since its establishment in 1958, providing a one-stop solution from pre-treatment to painting, stripping, and delivery. By in-house production of zinc phosphate treatment, we complete degreasing, chemical treatment, painting, inspection, and packaging in-house, consolidating management into a single point of contact. By integrating processes that were previously dispersed among multiple contractors, including paint stripping and cleaning by group companies, we achieve reduced lead times and lower management burdens. Even in the event of painting defects, we can utilize our own stripping equipment for a rapid repainting response. With a monthly production capacity of 300,000 pieces and the ability to handle 100 types in 30 colors, we flexibly accommodate everything from small lots to mass production.
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De-fatting process improvement, defect reduction.
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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.
