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与传统磷化相比,电解磷化工艺采用电能,具有速度更快,膜层更牢固、覆盖更完整,质量控制更方便等优点。对比了传统工艺与该电解磷化工艺的原理,说明了该工艺无铁淤泥生成的原因。通过统计试验讨论了化学成分对磷化膜质量、表面形貌、组分的影响及膜层质量对其暗度的影响。结果表明,膜层质量与溶液中的锌含量有直接关系,但膜层结构基本不受化学成分的影响,而膜层微观形貌与暗度与其质量有关。由此说明,通过控制磷化液中的锌含量可控制膜层质量,而通过检测膜层外观也可有效监控膜层质量。
Compared with the traditional phosphating electrolysis phosphating process using electricity, with faster, more solid film, covering a more complete, more convenient quality control and so on. The principle of the traditional process and the electrolytic phosphating process is contrasted, and the reason of the iron-free sludge is explained. The influence of chemical composition on the quality, surface morphology and composition of phosphating film and the influence of film quality on its darkness were discussed through statistical tests. The results show that the film quality is directly related to the zinc content in the solution, but the film structure is basically not affected by the chemical composition, while the film morphology and darkness are related to its quality. This shows that by controlling the phosphating solution of zinc content can control the quality of the film, but by detecting the appearance of the film can also effectively monitor the quality of the film.