自本刊第三卷十一期拙作“我们怎样镀硬铬”一文刊出后,接到不少同志来信或径来厂提出问题和意见。爰再谈镀硬铬问题,以供同志们参考。一镀前之处理镀硬铬设备与装饰镀铬设备相同。镀层硬度主要与溶液温度、浓度、电流密度有关;而这些最重要的是温度控制。镀液之加热无论用水汀或电热,均须使溶液温度均匀,上下一律。镀时容液通过电流而产生热,这热往往和从镀缸中逸散到空气中的热不能抵消;因此在镀硬铬过程中,温度的调节是 Since the publication of the essay, “How We Chromized Hard Chromium,” published in Volume 11 of Book Three, many comrades have been sent letters or suggestions to raise questions and opinions.爰 talk about hard chrome plating for comrades reference. A pre-plating treatment of hard chrome plating equipment and decorative chrome equipment the same. Coating hardness mainly with the solution temperature, concentration, current density; and these most important is the temperature control. Bath heating Whether water or electric heating, the solution temperature must be uniform, up and down. During plating, the fluid passes through the electric current to generate heat, which is often not offset by the heat dissipated in the air from the plating tank. Therefore, during the hard chrome plating process, the temperature is controlled