The Art of Chrome Stripping in CNC Machining(rubber moulding Bob)

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Chrome stripping is a crucial process in the world of CNC machining, as it allows for the removal of chrome plating from various components. This article delves into the intricacies of chrome stripping and its significance in achieving exceptional precision and functionality in CNC machined products.

Understanding Chrome Stripping in CNC Machining:

Chrome stripping refers to the process of removing chromium layers from metal parts through chemical or mechanical methods. In CNC machining, this technique plays a vital role in refurbishing worn-out or damaged components and preparing them for further processing.

The Need for Chrome Stripping:

1. Restoration of Functional Surfaces:
Over time, constant use and exposure to environmental factors can result in the deterioration of chrome-plated surfaces. By employing chrome stripping, manufacturers can restore the integrity of these surfaces, ensuring optimal functioning of machined parts and enhancing their lifespan.

2. Preparation for Advanced Processes:
In some instances, chrome plating may interfere with subsequent operations such as painting, coating, or welding. Through chrome stripping, manufacturers eliminate any potential issues arising from chromed surfaces, allowing for seamless integration with additional processes.

Methods of Chrome Stripping:

1. Chemical Stripping:
Chemical stripping involves immersing the components in an alkaline solution that effectively dissolves the chrome layer. Sodium hydroxide (caustic soda) or potassium hydroxide (caustic potash) solutions are commonly used for this purpose. Manufacturers carefully control variables such as temperature, concentration, and immersion duration to achieve desired results without damaging the underlying base material.

2. Mechanical Stripping:
Mechanical stripping entails utilizing abrasive techniques to remove the chrome layer physically. This method involves sandblasting, grinding, or buffing the surface until the coating is successfully stripped away. It is particularly useful when dealing with larger or irregularly shaped components where immersion is not feasible.

Safety Considerations:

It is essential to prioritize safety during chrome stripping processes due to the potentially hazardous chemicals involved. Protective measures, such as wearing appropriate personal protective equipment (PPE), ensuring adequate ventilation, and following proper disposal protocols, must be strictly adhered to when using chemical stripping methods.

Post-Chrome Stripping Procedures:

1. Surface Refinishing:
Once the chrome layer has been effectively stripped, additional surface refinishing processes may be necessary to achieve specific requirements. This can include polishing, sanding, or applying other coatings to enhance aesthetics, improve corrosion resistance, or optimize friction properties.

2. Quality Inspection:
As with any critical manufacturing process, thorough quality inspection procedures are crucial after chrome stripping. This ensures that all tolerances, specifications, and functional requirements have been met before the components move forward in the production cycle. Proper inspections guarantee consistency, performance, and overall customer satisfaction.


Chrome stripping serves as a fundamental step in CNC machining, allowing for the restoration and preparation of components to meet various application needs. Whether by employing chemical or mechanical methods, manufacturers can ensure optimal functionality, compatibility with subsequent processes, and increased longevity for machined parts. By understanding the significance of chrome stripping and implementing it meticulously, industries can consistently deliver high-quality products that excel in precision and performance.

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