Finishing

One Stop service Machining to surface finishes

One Stop Finishing services

Our company specializes in delivering top-notch finishing services, suitable for both prototype development and large-scale production. We are committed to enhancing the quality of your components through a range of processes including:

  • Plating: Adding a protective and decorative layer to your parts.
  • Anodizing: Enhancing corrosion resistance and surface hardness.
  • Powder Coating: Providing a durable and aesthetic finish.
  • Pad and Silk Screen Printing: Offering custom printing solutions for detailed designs.
  • Sand Blasting: Smoothing and cleaning surfaces with precision.
  • Polishing: Creating a high-gloss, refined finish.
  • Heat Treating: Strengthening and hardening materials for improved performance.
Finishing Services for Your Components

Normal Finished Parts

What Defines a ‘Standard Finish’ Component?

These components typically display noticeable machining traces, with a surface texture characterized by a roughness measure between Ra1.6 and 3.2 μm. Due to the absence of a protective layer, these parts are more prone to minor damages like scratches and nicks due to their inherent surface texture.

Anodizing

Anodizing is an electrochemical process used to increase the thickness of the natural oxide layer on the surface of metal parts, most commonly on aluminum. It enhances the metal's durability, corrosion resistance, and aesthetic appeal. Here's a breakdown of the anodizing process and its benefits:

  1. Process: The metal part to be anodized is placed in an electrolyte solution, such as sulfuric acid, and used as the anode (positive electrode) in an electrical circuit. A cathode (negative electrode) is also placed in the solution. When electricity is passed through the circuit, an oxide layer forms on the surface of the metal part.

  2. Types of Anodizing: There are several types of anodizing, with Type II and Type III being the most common. Type II creates a thin, corrosion-resistant layer suitable for decorative purposes, while Type III, also known as hardcoat anodizing, produces a thicker and more durable surface.

  3. Benefits:

    • Increased Durability: The anodized layer is integrated with the underlying metal, providing significant resistance to wear and tear.
    • Corrosion Resistance: The oxide layer protects the metal from oxidizing, making it more resistant to corrosion.
    • Aesthetic Enhancement: Anodizing can add color to the metal through dyeing the porous oxide layer, making it popular for decorative purposes.
    • Improved Adhesion: The porous nature of the anodized layer allows for better adhesion of glues and paint primers.
    • Electrical Insulation: The oxide layer can provide electrical insulation, which is beneficial for certain applications.
  4. Applications: Anodizing is widely used in various industries for components that require a protective and decorative coating. Common applications include aerospace parts, consumer electronics (like smartphones and laptops), kitchenware, and architectural elements.

Polishing and Precision Machining

Polishing

Polishing is a process aimed at creating a smooth and highly reflective surface. This is accomplished either through mechanical rubbing or by applying a specific chemical treatment. The result is a surface with a pronounced mirror-like finish and minimal diffuse reflection. Precision machining, on the other hand, is a technique used in metalworking. It often employs electropolishing, a method particularly effective for both ferrous metals and aluminum. This technique helps achieve a desired level of surface smoothness, enhancing the quality and precision of the machined items.

Coating

Coating involves the application of a slim layer of metal onto a conductive surface. This process, often achieved through electroplating, enhances the strength, durability, and overall lifespan of metal components. Commonly utilized coatings include nickel, chrome, tin, and silver plating.

This coating process is versatile and can be applied to various metal substrates, including those used in CNC steel machining, spring steel CNC machining, and CNC machining of stainless steel materials.

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Emitech 20 years CNC
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