Low sulfuric acid content- prolongs the process time. High chloride content in chrome bath hazy deposit, abnormal crack patterns. Electrolytes- should be analyzed on regular basis. Uneven distribution of ions in electrolyte- polarization. Works again even flow of current from rectifier.
High polarization increases the likelihood of imperfections in the deposited layer.
What percentage of the cylinder sufrace is immersed in electrolyte at any point of time- active surface. More current can be conducted through larger surface. Larger immersion factor- requires a larger anode. Cathodic current density- of interest. Current density is given by electric field at cathode.