What causes rust juice to come out from the seams? Pre-treatment liquid for gaps.
Although the paint is beautiful, rust is leaking from the overlaps of the boards and the seams of the welds. The cause is the residual pretreatment solution and water in the gaps. Measures will be explained.
Brown rust juice has emerged from the seams of the painted parts. You might be wondering why, even though the paint looks nice. 【First, take a look here】 □ Rust juice only comes from overlapping plates or welded seams → Pre-treatment liquid or water is remaining in the gaps □ After baking, there were traces of bubbles or liquid at the seams → The liquid inside is being forced out by heat □ The paint has not reached deep into the gaps → The metal inside is left exposed 【Why does this happen?】 Liquid that enters narrow gaps is difficult to remove even with washing and does not dry completely. The remaining liquid causes the metal inside to rust, leading to rust juice seeping out later. 【Countermeasures you can implement starting today】 1. Hang the parts in a direction that allows the liquid to drain out 2. Allow for longer drainage and drying times 3. Consult during the design phase to create shapes that do not have gaps or include drainage holes 【Free Material】 We have compiled how to identify rust and countermeasures in the related catalog "Eiwa Kogei_Painting Trouble Introduction_Identification and Countermeasure Guide." You can download it for free from this page.
- Company：永和工芸
- Price：Other
