Surface Finishing Service
YISHANG offers a wide range of surface finishing services designed to enhance both the appearance and performance of your metal components. With over 26 years of expertise, we provide customized solutions to meet the specific needs of each project, ensuring durability, aesthetic appeal, and superior functionality.
Our Surface Finishing Services
Metal surface treatments are diverse and tailored to specific needs. Here’s a detailed overview of the most common processes:
Metal Peening
Description :Metal peening involves bombarding a metal surface with small, hard particles to induce compressive stresses. This treatment improves fatigue resistance and surface hardness, enhancing the metal’s overall durability.
Advantages :
- Enhanced Fatigue Resistance : Reduces the likelihood of crack formation and extends the life of metal components.
- Increased Surface Hardness : Improves wear resistance and overall durability.
- Stress Redistribution: Helps manage residual stresses, improving structural performance.
Considerations:
- Proper Equipment Selection: Ensure correct shot size and velocity to avoid damaging the surface.
- Surface Preparation: The metal surface should be clean before peening to ensure effective treatment.
- Controlled Parameters: Monitor shot velocity and exposure time carefully to prevent unwanted effects.
- Post-Treatment Inspection: Check the treated surface for quality and any new defects.
- Material Compatibility: Ensure that the metal is suitable for peening to achieve optimal results.

Metal Polishing
Description:Metal polishing is the process of smoothing and shining metal surfaces using abrasives and polishing compounds. This treatment enhances the metal’s appearance and can remove imperfections.
Advantages:
- Improved Appearance: Achieves a high-gloss finish, making metals visually appealing.
- Increased Resistance to Corrosion: Polished surfaces often resist corrosion better due to the removal of contaminants.
- Smooth Surface: Reduces friction and wear, improving performance and longevity of the metal components.
Considerations :
- Proper Abrasive Selection: Choose the right abrasives to avoid scratching or damaging the metal.
- Time-Consuming Process: Polishing can be labor-intensive and requires meticulous work for best results.
- Surface Preparation: Ensure the metal surface is clean and free from rust or debris before polishing.
- Consistent Technique: Apply polishing compounds evenly to achieve a uniform finish.

Metal Burnishing
Description:Metal burnishing is a process used to smooth and polish metal surfaces by rubbing them with an abrasive or burnishing tool. This method can improve the surface finish and enhance the metal’s appearance and functionality.
Advantages:
- Enhanced Surface Finish: Achieves a smooth, glossy finish by reducing surface roughness.
- Increased Hardness: Burnishing can increase the surface hardness, enhancing wear resistance.
- Improved Aesthetic Appeal: Creates a bright and reflective surface, enhancing the visual appeal of metal parts.
Considerations :
- Tool Selection: Use the appropriate burnishing tools and abrasives for different metal types to avoid damage.
- Surface Preparation: Ensure the metal surface is clean and free of contaminants before burnishing.
- Uniform Application: Apply the burnishing process evenly to achieve a consistent finish across the entire surface.
- Maintenance: Regular maintenance of burnishing tools is necessary to ensure optimal performance and longevity.

Tumbling Treatment
Description: Tumbling treatment involves placing metal parts in a rotating barrel or drum with abrasive media to remove burrs, smooth surfaces, and improve finish. The process uses a combination of friction, impact, and abrasion to achieve desired results.
Advantages:
- Efficient Surface Cleaning: Removes burrs and sharp edges effectively, enhancing the overall surface quality.
- Consistent Finish: Provides a uniform finish across all parts, especially useful for bulk processing.
- Time-Saving: Automates the polishing process, reducing manual labor and time.
Considerations :
- Media Selection: The choice of abrasive media impacts the final surface finish; improper selection can lead to inconsistent results.
- Part Size Limitations: Works best for small to medium-sized parts; larger components may require different methods.
- Wear and Tear: The tumbling media can wear out over time, requiring regular replacement to maintain effectiveness.
Passivation
Description: Passivation involves treating metal surfaces, typically stainless steel, with a chemical solution to remove free iron and enhance corrosion resistance. This process forms a protective oxide layer on the surface.
Advantages:
- Improved Corrosion Resistance: Enhances the natural corrosion resistance of stainless steel, extending its lifespan.
- Enhanced Cleanliness: Removes contaminants and iron particles, improving surface purity.
- Maintained Aesthetic Appeal: Helps maintain a clean and shiny appearance of stainless steel products.
Considerations :
- Proper Solution Choice: Use the correct chemical solutions and concentrations for different types of metals.
- Surface Preparation: Ensure the metal surface is clean and free of grease or other contaminants before passivation.
- Controlled Environment: Conduct passivation in a controlled environment to avoid contamination and ensure consistent results.

Electroplating
Description: Electroplating involves depositing a layer of metal onto a surface using an electric current. This process improves corrosion resistance and enhances aesthetic appeal. Commonly used metals include chromium, nickel, and gold.
Advantages:
- Enhances surface hardness, corrosion resistance, and appearance. It is widely used in automotive, electronics, and jewelry industries.
Considerations :
- Requires careful control of current and bath composition to avoid defects such as uneven plating or poor adhesion.

Anodizing
Description: Anodizing is an electrochemical process that converts the metal surface into an oxide layer, improving corrosion resistance and surface hardness. It is commonly applied to aluminum and titanium.
Advantages:
- Provides a durable, corrosion-resistant finish with enhanced hardness. Offers a range of colors and is commonly used in aerospace, architecture, and consumer goods.
Considerations :
- The process can be expensive and requires precise control of chemical baths and electrical conditions.

Powder Coating
Description: Powder coating involves applying a dry powder to a metal surface, which is then cured under heat to form a hard, protective layer. This process is used for a wide range of metals including steel and aluminum.
Advantages:
- Provides a tough, durable finish with excellent resistance to chipping, scratching, and fading. It is environmentally friendly as it produces minimal waste.
Considerations :
- Requires thorough surface cleaning before application, and curing ovens are necessary to complete the process.

Sandblasting
Description: Sandblasting, also known as abrasive blasting, involves propelling abrasive particles at high speeds onto a metal surface to clean or prepare it for further treatment. This process removes rust, paint, and other contaminants.
Advantages:
- Effective Surface Cleaning: Thoroughly removes contaminants like rust, old paint, and oxidation.
- Enhanced Surface Preparation: Prepares surfaces for coatings, paints, or other treatments by creating a rough texture for better adhesion.
- Versatility: Can be used on various metals and surfaces, including complex shapes and hard-to-reach areas.
Considerations :
- Proper Abrasive Selection : Choose the appropriate abrasive material based on the metal type and desired finish.
- Protective Measures : Use appropriate safety gear and equipment to protect against dust and debris.

Galvanizing
Description: Galvanizing involves coating steel or iron with a layer of zinc to protect against corrosion. The zinc coating is applied by dipping the metal into molten zinc.
Advantages:
- Provides long-lasting corrosion protection, making it ideal for outdoor and industrial applications.
Considerations :
- The process can be time-consuming and requires proper temperature control to ensure even coating.

Heat Treating
Description: Heat treating involves heating and cooling metal in a controlled manner to alter its physical and mechanical properties. This process enhances hardness, strength, and durability, and can include methods like annealing, quenching, and tempering.
Advantages:
- Improved Mechanical Properties: Enhances hardness, strength, and wear resistance of metals.
- Increased Durability: Extends the lifespan of metal components by improving their resistance to stress and fatigue.
- Tailored Characteristics: Allows precise control over the final properties of the metal to meet specific requirements.
Considerations :
- Temperature Control: Requires precise temperature management to achieve desired properties without damaging the metal.
- Cooling Rate: Proper cooling rate must be maintained to avoid unwanted stresses or distortions.
- Material Compatibility: Ensure the heat treating method is suitable for the specific type of metal and its intended application.

Chemical Conversion Coating
Description: This process involves applying a chemical solution to metal surfaces, which reacts to form a protective coating. Common types include chromate and phosphate coatings, used mainly on aluminum and steel.
Advantages:
- Enhances corrosion resistance and can improve paint adhesion. It is a relatively low-cost process.
Considerations :
- Not as durable as other coatings and may require additional protective layers for long-term use.

Factors to Consider When Selecting Surface Treatments
When deciding on the appropriate surface treatment for your project, consider these critical factors:
Material Compatibility
- Ensure the treatment is suitable for the specific metal or alloy. Different metals react differently to treatments; some may not bond well or could be damaged by certain processes.
Intended Use
- Define what the treatment needs to achieve. Consider whether it’s for enhancing corrosion resistance, improving hardness, or achieving a specific finish.
Environmental Exposure
- Think about where the treated metal will be used. Treatments must withstand environmental factors like moisture, chemicals, and temperature extremes.
Cost Considerations
- Balance the treatment’s cost with your budget. More advanced treatments may offer better performance but could be more expensive.
Aesthetic Needs
- Determine if the appearance of the metal is important. Some treatments can improve visual appeal with various finishes and colors.
Durability
- Evaluate how long the treatment will last and how much maintenance it will require. Long-lasting treatments may save on future maintenance costs.
Compliance with Standards
- Check if the treatment meets industry or regulatory standards, especially for specialized applications like aerospace or medical devices.
Environmental Impact
- Look into the environmental effects of the treatment. Choose methods that minimize waste and use fewer hazardous chemicals.
Performance Requirements
- Assess the specific performance needs of the treatment, such as resistance to abrasion or heat, to ensure it meets your technical requirements.
Why Choose YISHANG for Surface Finishing?
Comprehensive Surface Treatment Options
We provide a full suite of surface finishing options, including sandblasting, powder coating, electro-polishing, anodizing, and more. Each process is tailored to meet your needs, whether you’re looking for improved corrosion resistance, better aesthetics, or enhanced durability.
Expertise in Material and Process Selection
Our team works closely with you to select the most suitable surface treatment based on the material, application, and desired outcome. We have extensive experience in working with various metals, including stainless steel, aluminum, and carbon steel, ensuring that every part receives the most effective treatment.
State-of-the-Art Equipment and Techniques
YISHANG utilizes the latest surface finishing technology and equipment to deliver consistent, high-quality results. Whether you’re looking to improve the surface finish for appearance, durability, or functional performance, our advanced processes ensure long-lasting results.
Custom Solutions for Every Application
Every project is unique, which is why we offer customized surface finishing solutions. Whether you need a specific texture, coating thickness, or finish quality, YISHANG provides flexible, tailored services that meet your exact requirements.
Conclusion
Choosing the right surface treatment can enhance your product’s performance and durability.We offer a range of top-notch solutions tailored to meet your needs. From corrosion resistance to aesthetic finishes, we ensure the best results.
Contact us today to learn more!