The existing problems of black phosphating process for solenoid valve were analyzed,including unstable phosphating quality,imperfect technics,incongruous rack design and low post-treatment quality.

• 分析了电磁阀本体黑色磷化工艺存在的问题,包括磷化质量不稳定,工艺不完善,挂具设计不合理、后处理质量低等。