Troubleshooting: Spots, Over-melt, Uneven Oven
常见问题：色斑、过热、烘烤不均
标签：色斑, 过热, 熔化, 烘烤不均, 故障排查
①色斑/不均：底材有油或厚氧化皮→重抛光去油再作。②局部黑斑（火焰）：定点停留→改为扫动。③色一闪而过难控：环境太亮→暗处操作、用色卡比对。④薄件过热熔化：铜熔点 1083℃，薄件(<0.5mm)极易熔→降火力、远距、快速，或改用低温烘烤。⑤烘烤不均：工件叠放/遮挡→平铺互不接触、炉内气流均匀。⑥变色后发雾：冷却沾水→自然空冷。
①Spots/uneven: oily base or heavy scale → re-polish and degrease. ②Local black (torch): dwelled flame → keep moving. ③Color flashes by: too bright to see → work dim, use a color chart. ④Thin part melts: Cu melts at 1083℃, <0.5 mm fuses easily → lower flame/distance/speed, or switch to low-temp oven. ⑤Uneven oven: pieces overlapped → lay flat, no contact, even airflow. ⑥Hazy after color: quenched → air-cool naturally. ---