Precision Surface Engineering

Surface Finishing Solutions

Enhance functionality, aesthetics, and performance with our advanced surface finishing technologies. We deliver precise, consistent, and application-specific surface treatments for critical components across industries.

Ra 0.1μm
Surface Roughness
±0.001mm
Dimensional Control
100%
Inspection Coverage

Surface Finishing Processes

Physical surface modification processes that alter texture, remove material, or create specific patterns.

Precision Grinding

Abrasive material removal process achieving tight tolerances and fine surface finishes.

Specifications:
roughness:Ra 0.1-0.8μm
applications:Bearing surfaces, sealing faces, precision mating components
advantages:Excellent dimensional control, superior flatness, consistent finish
Suitable Materials:
Hardened steels
Tool steels
Ceramics
Carbides

Lapping

Ultra-precision abrasive process for achieving extremely flat, smooth surfaces.

Specifications:
roughness:Ra 0.025-0.2μm
applications:Optical components, sealing surfaces, gauge blocks
advantages:Superior flatness, excellent surface finish, minimal subsurface damage
Suitable Materials:
Hardened steels
Ceramics
Glass
Semiconductor materials

Polishing

Progressive abrasive process to create smooth, reflective surfaces.

Specifications:
roughness:Ra 0.025-0.4μm
applications:Mold components, optical surfaces, aesthetic finishes
advantages:Mirror-like finish, minimal material removal, stress-free surface
Suitable Materials:
Steels
Aluminum
Copper alloys
Plastics

Micro-Blasting

Controlled abrasive blasting for specific surface textures and preparation.

Specifications:
roughness:Ra 0.8-3.2μm
applications:Surface preparation, texture creation, selective cleaning
advantages:Controlled texture, excellent adhesion preparation, stress relief
Suitable Materials:
Metals
Ceramics
Glass
Composites

Surface Measurement Parameters

We utilize comprehensive surface metrology to quantify and control surface characteristics for optimal performance.

Roughness (Ra)

Definition:

Arithmetic average of absolute values of profile deviations from the mean line.

Significance:

Affects friction, wear, fatigue resistance, and fluid retention.

Typical Range:

0.025μm to 6.3μm depending on application

Waviness (Wa)

Definition:

Longer wavelength deviations in the surface profile, often caused by machining vibrations.

Significance:

Impacts sealing ability, bearing contact patterns, and noise generation.

Typical Range:

0.5μm to 100μm depending on component size

Surface Texture

Definition:

Directional characteristics and pattern of the surface irregularities.

Significance:

Affects fluid flow, light reflection, adhesion properties, and appearance.

Typical Range:

Specified by pattern type and orientation requirements

Bearing Ratio (Tp)

Definition:

Material distribution across the assessment profile height.

Significance:

Critical for bearing surfaces, seals, and wear components.

Typical Range:

Typically specified as a curve or at specific depth values

Industry Applications

Medical

Requirements:

Biocompatibility, sterilizability, wear resistance, and precise functionality

Common Finishes:
Electropolishing
Improves corrosion resistance and eliminates micro-crevices that could harbor bacteria
Passivation
Enhances biocompatibility and corrosion resistance of implantable devices
Precision Grinding
Creates precise bearing surfaces for orthopedic implants and surgical instruments
Critical Factors:
  • Biocompatibility certification
  • Process validation
  • Complete traceability

Aerospace

Requirements:

Fatigue resistance, corrosion protection, and weight optimization

Common Finishes:
Shot Peening
Induces compressive stress to improve fatigue life of critical components
Hard Anodizing
Provides wear and corrosion protection for aluminum components
Superfinishing
Reduces friction and improves performance of bearing surfaces
Critical Factors:
  • NADCAP certification
  • Material certification
  • Process control documentation

Automotive

Requirements:

Wear resistance, friction control, and aesthetic appearance

Common Finishes:
DLC Coating
Reduces friction and wear in engine components
Microfinishing
Creates precise bearing surfaces for transmission components
Decorative Chrome
Provides corrosion protection and aesthetic appearance for trim components
Critical Factors:
  • PPAP documentation
  • IATF 16949 compliance
  • Cost-effectiveness

Semiconductor

Requirements:

Ultra-cleanliness, precision, and particle-free surfaces

Common Finishes:
Electropolishing
Creates ultra-clean surfaces for gas and fluid handling components
Precision Lapping
Achieves extreme flatness for sealing and mounting surfaces
Chemical Cleaning
Removes all contaminants from critical surfaces
Critical Factors:
  • Cleanliness verification
  • Particle testing
  • Material compatibility

Surface Quality Verification

Our comprehensive inspection capabilities ensure surface finishes meet exact specifications and performance requirements.

Profilometry

  • Contact and non-contact surface measurement
  • Roughness parameters (Ra, Rz, Rq, etc.)
  • Waviness analysis
  • 3D surface mapping

Optical Inspection

  • Surface defect detection
  • Pattern verification
  • Color and appearance evaluation
  • Automated visual inspection

Material Testing

  • Coating adhesion testing
  • Hardness measurement
  • Wear resistance evaluation
  • Corrosion testing

Dimensional Verification

  • Pre/post-process dimensional comparison
  • Coating thickness measurement
  • Geometric tolerance verification
  • CMM inspection

Certifications

  • ISO 9001:2015 Quality Management System
  • AS9100D Aerospace Quality Standard
  • ISO 13485 Medical Device Quality System
  • NADCAP Surface Enhancement Accreditation

Client Testimonials

"

Their electropolishing process transformed our medical components, eliminating micro-burrs and significantly improving corrosion resistance. The consistency of their work is outstanding.

Director of Manufacturing, Medical Device Company
"

We've relied on their precision grinding services for our aerospace components for years. The surface finish quality and dimensional control are always exceptional.

Quality Manager, Aerospace Manufacturer
"

The DLC coating they applied to our automotive components extended service life by over 300%. Their technical expertise in surface engineering is unmatched.

Chief Engineer, Automotive Systems Supplier

Ready to Enhance Your Component Surfaces?

Our surface finishing expertise can help you achieve optimal performance, appearance, and durability for your components.

Partsproto

Professional CNC machining and custom parts manufacturing services, meeting your precision machining needs with rapid delivery of high-quality components.

Contact Us

  • Email: [email protected]
  • Address: 11 Longjiangyi Rd, Dong Guan Shi, Guangdong Province, China, 523690

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