Introduction

Black stone is widely favored in the decoration industry for its deep color and premium texture. However, this type of stone may face issues such as corrosion, contamination, and color variations during use. This article will detail the maintenance and restoration processes for black stone, providing specific solutions.

Types and Characteristics of Black Stone

Black stone primarily includes black granite, black marble, and engineered quartz. These stones have different mineral compositions and structures, leading to variations in durability, glossiness, and color retention.

Challenges

The color of black stone may gradually fade due to natural weathering, friction, and contamination, affecting its decorative appeal.

Limitations of Traditional Solutions

Traditionally, stone processing plants use coloring techniques to address color variation issues, but these methods are limited in effectiveness on installed stone and typically only last for a short time.

Steps of the Innovative Solution

1. Cleaning and Preparation
   First, clean the stone surface with water to remove dust and impurities, preparing it for further treatment.

2. Grinding and Polishing
   Use a 1-4# light polishing pad (5 inches) to grind and polish the stone surface. This step helps remove minor surface damage and scratches.

3. Color Restoration
   Mix CR-7B (dark color) with POTEA black powder to form a paste. Use a polishing machine with #0 steel wool to evenly apply the paste on the stone surface, then dry-polish until it shines.

4. Brightening Treatment
   Use a polishing machine with a soft white polishing pad to dry-polish with CR-6A, further enhancing the stone's glossiness.

5. Final Protection
   After completing color restoration and brightening, apply an appropriate stone sealer to the surface to prevent contamination and improve weather resistance.

Advantages of the Process

• Simple and Quick Operation: Compared to traditional methods, the new process significantly reduces processing time and increases efficiency.

• High Color Restoration Rate: The new process achieves a color restoration rate of over 95%, closely matching the original stone color.

• Low Technical Requirements: The use of light polishing pads instead of traditional grinding discs lowers the technical difficulty and reduces the occurrence of grinding marks.

• Enhanced Glossiness: The new process not only restores color but also significantly enhances the stone's glossiness.

Conclusion

Maintaining and restoring black stone is a meticulous and technical process. By adopting innovative processes and materials, issues such as fading and color variation can be effectively addressed, restoring the stone's original beauty. With continuous technological advancements, stone maintenance processes will become more efficient and environmentally friendly, ensuring the lasting beauty of the stone.