Function for preventing hole filling and paint management of holes.
Clogging of bolt holes and drainage holes is an important issue that can lead to both assembly defects and the recurrence of rust.
Filling holes is a defect where bolt holes, positioning holes, drainage holes, etc., are blocked by paint. This issue is discovered at the customer site when bolts cannot pass through, parts do not fit into jigs, or water cannot drain. Particularly, if just one drainage hole is blocked, moisture can remain inside, leading to rust reoccurrence or blistering. The causes include excessive film thickness, spray direction, part orientation, jig setup, and paint pooling before drying. Initially, we check the position of functional holes, the extent of blockage, surrounding drips, and reproducibility with the same parts. The countermeasures involve identifying functional holes on the drawings and confirming them at three stages: before painting, after painting, and before shipping. Since drips and thick films are likely to occur around the holes, we confirm the passage not only visually but also using pins or gauges as necessary. It is important to make functional holes a dedicated focus for verification. Please utilize painting management documents for confirmation. Holes are parts that are directly related to functionality rather than appearance. Creating an important hole list and making it an independent inspection item will help prevent recurrence.
- Company：永和工芸
- Price：Other
