An Overview of Chrome Stripping in CNC Machining(metal surface finish chart Zara)

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Chrome stripping is a crucial step in the process of CNC machining. It involves the removal of chrome plating from a metal surface, making it ready for further modifications or refinishing. This article aims to provide a comprehensive understanding of chrome stripping and its importance in the realm of CNC machining.

Understanding Chrome Stripping:

Chrome stripping refers to the process of removing chrome plating that is often applied to objects for decorative purposes or to enhance their corrosion resistance. In CNC machining, this procedure becomes necessary when working with chrome-plated components that require modifications or repairs.

The Chrome Stripping Process:

1. Surface Preparation:
Before chrome stripping can begin, the object must undergo thorough cleaning to remove any dirt, grease, or other contaminants. This step ensures better adhesion during subsequent processes.

2. Acid Bath:
Once cleaned, the object is immersed in an acid bath. The choice of acid solution depends on factors such as the type and thickness of the chrome layer. Commonly used acids include hydrochloric acid (HCl), sulfuric acid (H2SO4), and nitric acid (HNO3). The chosen acid dissolves the chrome layer systematically to expose the underlying material.

3. Rinse and Neutralize:
After the desired level of chrome has been dissolved, the object is rinsed thoroughly to remove any residual acid. Following this, a neutralizing agent is applied to prevent any remaining acidic residue from causing damage to the exposed surface.

4. Final Cleaning:
To ensure complete removal of all chemicals and residues, the object undergoes a final cleaning process involving detergent solutions and deionized water. This step prepares the surface for further treatments like polishing, painting, or re-plating.

Importance of Chrome Stripping in CNC Machining:

1. Precise Modifications:
In CNC machining, precise measurements and modifications are essential. Removing the chrome plating allows precision adjustments to be made, such as resizing a component or correcting any dimensional errors. By stripping chrome, intricate modifications can be achieved with accuracy.

2. Enhanced Bonding:
For certain applications requiring additional coatings or finishes, such as powder coating or electroplating, the exposed metal surface after chrome stripping provides an ideal base for improved adhesion. This results in more durable and reliable end products.

3. Cost-Effectiveness:
Rather than replacing an entire chrome-plated object, chrome stripping offers a cost-effective option by allowing only the necessary changes to be made without discarding the existing materials. This saves both time and money in manufacturing and repair processes.

4. Better Material Evaluation:
Chrome stripping facilitates a detailed examination of the underlying material, revealing any imperfections, blemishes, or cracks that may require corrective measures. This ensures the production of high-quality components that meet specific standards and regulations.


Chrome stripping plays a vital role in CNC machining, enabling efficient modifications and enhancing the overall quality and durability of components. By following a meticulous process involving cleaning, acid bath, neutralization, and final cleaning, skilled professionals ensure precise results while adhering to industry standards. The practice of chrome stripping not only saves costs but also enables superior bonding capabilities, providing long-lasting performance for various applications.

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