Surface Finishing in First Part

FIRST PART Surface Finishing:

Surface Finishing is an extensive range of industrial processes that involve altering the texture of a manufactured part or product to achieve the manufactured item’s desired property.

First Part offers surface finishing for various CNC Machining parts as the CNC Machining leaves certain tool marks on the elements because of its subtractive knowledge.

Hence, First Part surface finishing helps to eliminate any wear resistance, surface brutality, and visual properties of the CNC machined items and parts.

In First Part, different processes and treatments are used to improve and alter CNC machined items’ textures. If you’re interested in knowing about the types of surface finish treatments offered by First Part, you can move on to the paragraphs below.

Types of surface finishing treatments offered by First Part:

First Part surface finishing includes the below-listed treatments:

1. As-Milled Finish:

As-Milled Finish: As-Milled is one of the standard surface finishing treatments that target surface harshness of up to 125.

Usually, the parts have slight visible tool marks so, As-Milled surface finishing is done to improve the surface roughness to 63, 32, or 16 in.

Lastly, it would help if you kept in mind that reducing standard roughness might increase the costs because bringing the surface roughness to such in usually develops processes that increase in number.

2. Bead Blast Finish:

Another type of First Part surface finishing is the Bead Blast Finish. In this treatment, a light surface is created with a dull finish. This is done using the glass beads, which are rubbed against the client’s equipment or product.

Usually, this kind of treatment of surface finishing is used for visual purposes. Plus, the glass beads used in this kind of surface finishing are available in different sizes too.

Nevertheless, you may incur additional costs if the design or items need a considerable covering on the surface or on the holes: which does not involve glass beads for the finish.

3. Type II Sulphuric Acid Anodizing:

This treatment involves the electrolytic oxidation of the parts. In this process, the details are made anodes in an electrolytic solution, and Type II Sulphuric Acid coatings are made the cathodes.

This facilitates an even coat on the parts and gives them a uniform finish that is rust-resistant. In this type of surface finishing, you can choose the coating’s desired color from several options such as black, red, and gold.

Furthermore, anodizing surface finishing involves the usage of coatings, with varying thicknesses which go up to 25 μm. Usually, the coating’s thickness depends on the chosen color; for the layer, for example, the coating thickness for black is 8-12 μm and  4-8 μm for the undyed.

4. Type III Hard Anodic Anodizing:

The next surface finishing treatment is Type III Hard Anodic Anodizing. In this treatment, hard attire resistance layer of coatings is produced along with the corrosion-resistant coatings produced using the Type II Sulphuric Acid.

Different dyes are also available for this surface finishing. Moreover, this kind of surface finishing implicates thick and sturdy ceramic coatings that have a greater density: which is remarkable against daily wear and tear.

5. Powder Coat Finish:

The fifth type of treatment offered by First Part for surface finishing is Power Coat Finish. In this treatment, the parts are coated with powdered paint, and then the coated details are sent to the oven to bake the paint. This gives the pieces a rigid and robust finish that is effective against wear and corrosion.

However, before powdered paint coating is done, the parts go through a chromatin or phosphate coat so that the wear corrosion capacity of the parts can be increased. Powder Coat Finish is available in numerous colors so that customers can choose the colors of their own choice.

Besides, you can get the parts coated several times according to your preference to increase the paint coatings’ density and thickness.

Applications of surface finishing:

Many parts and components are refurbished, finished, and fabricated with the use of surface finishing for various applications. The list below highlights the most prominent applications of surface finishing:

1.Optical Reference Surfaces including Optical Flats and Reference Cubes

2.Air Bearings

3.FPD Vacuum Chucks

4.Wafer Chucks and Wafer Mounting Blocks

5.Heart Pump Stator

6.Hydraulic Cylinders

7.Molding and Extrusion Equipment

8.Pumps, Seals, and Bushings

9.Fuel Injectors and Hydraulic Control Valves

10.Shafts, Journals, and Gear Faces

11.Refractory Metal Substrates, Nozzles, Gaskets, and Reservoirs

12.Precision Spacers

13.Gauge Tooling and Fixtures

14.Medical Devices and Pharmaceuticals

15.Heat Sinks

16.High-Energy Physics

17.Interferometric Positioning Mirrors

18.Low-Scatter Mirrors

19.High Reflectivity Gold Coatings


If you are looking for a surface finishing service provider, you can go for the First Part surface finishing as they have multiple surface finishing treatments to choose the best type of treatment for your machine parts, fuel injectors shafts, and other types of equipment.

Moreover, if you don’t know anything about surface finishing but want to get your equipment finished, this article can prove helpful and informative.