Hard chrome plated glass mold causes of poor adhesion

 Adhesion is poor for two main reasons: First, cast-iron structure is not dense, porous, easily infiltrated the solution not easy to clean; the second is a higher carbon content of cast iron, a slight erosion over the surface will have a floating carbon, resulting in binding bad. Chrome-plated cast iron should be carried out strictly in accordance with the following: First, to be plated polished surface, do not have any rust, first carefully hand degreasing, electrolytic degreasing and then, thoroughly washed with hot water, using a more dilute sulfuric acid or hydrochloric acid activated a short time, with thoroughly washed with water, quickly into the slot, first with the impact of current (nominal current of 2 to 3 times) plated 2 to 3 minutes, turn the normal current plating, until the end. Also note, installed and insulation can not be left hanging cracks, or cracks in the plating solution in the process of slowly leaking, not only caused problems with the coating, but also pollution of the bath.

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