The hard chrome plating specialists at EN-CHRO Plating shared a question commonly asked. “Can a thicker layer of hard chrome plating be applied to last longer?” There are reasons why it is best to apply the recommended amount. There are various industrial industries that rely on hard chrome plating as it increases the hardness, durability and is corrosion resistant. Does the thickness in hard chrome plating matter? Let’s take a further look.
- Peeling or Spalling Caused by Weakened Adhesion
Peeling or spalling is a serious issue when the thickness of the hard chrome plating exceeds the ideal thickness for the items being hard chrome plated. When the adhesion between the base material and the hard chrome plating deteriorates, peeling or spalling can occur.
- Cracking and Flaking Triggered by Too Much Stress
There needs to be a balance between the substrate and the hard chrome plating. That’s because hard chrome plating develops internal stress. Professionals at EN-CHRO Plating can help determine the maximum thickness that can be safely used. If too thick of hard chrome plating is applied, microcracks, flaking or delamination can occur. Microcracks are very tiny cracks that the normal person will NOT see. These can only be found with magnification.
The issue with cracking or flaking is that the base metal can get exposed which can cause corrosion.
- Rough or Grainy Finish
Over plating with hard chrome can result in an uneven surface. This can reduce the wear resistance and aesthetic quality of the substrate.
- Increased Heat Time Can Cause the Metal to Weaken
As we are finding out, thicker is not always better. In this instance, by applying a thicker layer of hard chrome, you will need additional heat. The additional heat the base metal will absorb more hydrogen. When this occurs, cracks are more likely to happen as the metal is more fragile.
- Hydrogen Embrittlement
High strength steels are vulnerable as it weakens the metal from the inside, reducing its strength. During the electroplating process, hydrogen can move slowly and spread throughout the metal’s structure causing it to become brittle and can suddenly fail.
Longevity of the Hard Chrome Plating is Most Important
The natural thought process is that if you place a thicker layer of hard chrome plating, the product will get a longer life. Although that sounds logical, there are cases where it is best to use the recommended amount for your hydraulic cylinders or piston rods. The best course of action is to ask Enchro Plating for our expert opinion as we hard chrome plate every day. We’ll walk you through the process in order to ensure the longest wear possible. This will include the initial inspection, removal of the existing hard chrome plating, repairing any imperfections and depositing the right amount of hard chrome plating onto the surface of the metal. Our job is to keep you informed each step of the way so you are confident that the final result is to your satisfaction. Thickness in Hard Chrome Plating Matter.
Contact us today at 708-450-1250 or email us for a quote at quotes@enchro.com