Restoration of Engine Block

Recently, Sterling Impreglon Asia was entrusted with a highly precise repair assignment involving the restoration of multiple engine block top bearing pockets using our proprietary Brush Plating technology.

The Challenge

The customer required the restoration of five engine block top bearing pockets. Due to operational wear and dimensional loss, these surfaces needed to be rebuilt with extreme precision to meet the original tolerance requirements.

Because these pockets support critical engine bearings, the repair required careful control of plating thickness and uniformity.

Any deviation from the required tolerance could affect bearing seating and engine performance. Achieving this level of dimensional restoration demanded a highly controlled process, precise measurement, and strict adherence to procedure throughout the repair.

Our Approach

To restore the bearing pockets, our technical team utilized Sterling’s Brush Plating Technology, a selective metal deposition method that allows controlled material build-up directly on the damaged surface.

The process involved several key steps:

1. Surface Preparation

The bearing pockets were thoroughly cleaned, degreased, and activated to remove any contaminants and ensure optimal bonding conditions.

2. Controlled Copper Build-Up

Using our Brush Plating process, copper was gradually deposited onto the worn surfaces until the required thickness was achieved. This step required careful monitoring to maintain uniformity across the entire bearing pocket.

3. Precision Finishing Layer

Once the copper build-up was completed, a thin nickel layer was applied. This finishing layer enhances surface durability while maintaining the precise dimensions required for proper bearing fitment.

4. Dimensional Verification

Throughout the process, frequent dimensional checks were conducted to ensure the restored surfaces remained within the specified tolerance limits.
 

Execution and Timeline

Given the precision required, the repair was carried out methodically to ensure accuracy and consistency across all five bearing pockets.

The entire project was completed over approximately 10 working days, during which our technicians carefully controlled plating thickness and surface finish to meet the exact specification.

The Result

The restored bearing pockets now allow the engine components to operate with the correct alignment and load distribution, ensuring reliable performance.

Why Brush Plating Was the Ideal Solution

For applications such as engine block bearing pockets, conventional repair methods like welding or extensive machining can introduce heat distortion or require more invasive procedures.

Brush Plating offers several advantages:

• Localized repair without removing large material sections
• Excellent adhesion through metallurgical bonding
• Precise control of plating thickness
• Minimal heat input, reducing risk of distortion
• Ability to restore critical dimensions accurately

This makes it particularly suitable for restoring precision surfaces in heavy industrial machinery.

Supporting Reliable Equipment Performance

With over three decades of experience, Sterling Impreglon Asia continues to support customers across multiple industries by delivering reliable repair solutions for complex mechanical components.