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IATF16949:2016
ISO13485:2016
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20% off your first order. Save up to $1,000/€1,000. Ends 31 Dec 2024.
IATF16949:2016
ISO13485:2016
ISO9001:2015
Call Us 24/7
+86 135 1000 5651
Send Mail Us
Language
Our Post-processing Services
We provide comprehensive surface treatment for all machined parts. You can choose the desired surface finishing for your parts from the following post-processing processes.
| Surface Treatment Process | Processing Services | Applicable Materials | Processing Trace Conditions | Appearance Controllability | Tolerance Impact |
|---|---|---|---|---|---|
|
CNC machining, Sheet Metal Fabrication, Vacuum Casting, Injection Molding |
Metals, plastics, ceramics, etc. |
There may be fine polishing marks. The finer the tools and processes, the less obvious the marks. |
By adjusting parameters such as polishing tools, force, and time, the surface gloss and flatness can be precisely controlled, ranging from matte to mirror - finish effects. |
Normal operation has minimal impact on dimensional tolerances. However, excessive polishing may cause a slight reduction in part size, so the amount of polishing needs to be strictly controlled. |
|
CNC machining, Sheet Metal Fabrication |
Mainly metals such as stainless steel and aluminum alloys |
Uniform and regular brush marks are produced. The quality of the brush and the operating technique determine the evenness of the texture. |
By selecting brushes with different bristle materials and thicknesses, and adjusting the brushing direction and force, the thickness, density, and direction of the brush marks can be controlled. |
It basically does not affect dimensional tolerances and mainly creates a unique surface texture appearance. |
|
CNC machining, Sheet Metal Fabrication, Vacuum Casting |
Metals, glass, some woods, etc. |
A uniform sandy - rough surface is formed. The sand grain size, spraying pressure, and distance determine the roughness. |
By precisely adjusting parameters such as sand grain parameters, spraying angle, and pressure, the surface roughness level and color evenness can be accurately controlled. |
It will cause a slight loss of surface material of the part, resulting in a slight reduction in size. A reasonable tolerance needs to be reserved before processing. |
|
CNC machining, Sheet Metal Fabrication |
Mainly easily - oxidized metals such as stainless steel |
There are almost no visible marks to the naked eye, and only a slight color change, such as a slightly darker color, may occur. |
The appearance is relatively stable and uniform. The color and gloss can be limitedly adjusted within the scope of the specific passivation process. |
It has almost no impact on dimensional tolerances and mainly improves the chemical stability of the metal surface. |
|
CNC machining, Sheet Metal Fabrication |
Specific metals such as aluminum alloys |
An anodic oxide film with certain color and luster is generated. The color and luster change during the film growth process. |
By controlling conditions such as the composition and concentration of the electrolyte, electrolysis time, and current density, the appearance properties of the film layer, such as thickness, color types (such as silver, black, colored, etc.), and hardness, can be precisely regulated. |
Due to the growth of the film layer, the part size will increase to a certain extent. Especially for high - precision parts, the impact of the film thickness on tolerances needs to be planned in advance. |
|
CNC machining, Sheet Metal Fabrication |
Metals such as steel and copper |
The surface presents a black color, and the color evenness varies depending on the blackening treatment process. |
To a certain extent, by optimizing the blackening process, controlling the treatment time and temperature, etc., the depth and evenness of the black color can be controlled. |
Under normal circumstances, it has little impact on dimensional tolerances. However, for parts with extremely high requirements for fit accuracy, attention should be paid to the possible slight impact on the fit dimensions during the treatment process. |
|
CNC machining |
Various metals such as zinc, copper, and nickel |
A metal coating is formed on the part surface. Factors such as solution concentration, current density, and electroplating time affect the coating uniformity. |
By strictly controlling various parameters during the electroplating process, the thickness, gloss (such as bright, matte), and color evenness of the coating can be accurately controlled. |
The coating will increase the part size. The coating thickness needs to be accurately calculated and controlled according to the design requirements to meet the tolerance requirements. |
|
CNC machining, Sheet Metal Fabrication |
Various metal substrates |
The quality of the coating is greatly affected by process parameters, and problems such as uneven thickness and color differences may occur. |
By finely adjusting electroplating process parameters such as the electroplating solution formula, current size, and energization time, the performance (such as hardness, wear resistance) and appearance (such as thickness, color, luster) of the coating can be precisely controlled. |
The coating thickness directly affects the dimensional tolerance and must be strictly controlled according to the tolerance requirements. |
|
CNC machining, Sheet Metal Fabrication |
Metals, some plastics, etc. |
There may be a slight granular feel on the coating surface. The powder particle size, spraying method, and curing conditions affect the smoothness. |
By selecting powder coatings with different particle sizes and colors, and optimizing the spraying process and curing parameters, the color, texture (such as flat, sand - like, hammer - like), and gloss of the coating can be precisely controlled. |
The coating will increase the part size. The coating thickness needs to be accurately controlled according to the design tolerance requirements. |
|
CNC machining, Sheet Metal Fabrication, Injection Molding |
Planar or nearly - planar metals, plastics, glass, etc. |
The edges of the printed pattern may have jagged or blurred phenomena, which are affected by the precision of the screen mesh, ink characteristics, and printing pressure. |
The content, color, and clarity of the printed pattern can be controlled, but there is a certain upper limit to the accuracy due to the silk - screen printing process itself. |
It basically does not affect dimensional tolerances and mainly serves to present specific patterns or markings on the part surface. |
|
CNC machining, Sheet Metal Fabrication, Vacuum Casting, Injection Molding |
Metals, woods, plastics, etc. |
Phenomena such as sagging, orange - peel effect, and bubbles may occur. The paint quality, spray gun operation, and spraying environment are the main influencing factors. |
By selecting high - quality paint, optimizing spray gun parameters (such as air pressure, flow rate), controlling the spraying environment (such as temperature, humidity), and operating techniques, the color, gloss, and surface texture effects can be effectively controlled. |
The thickness of the paint layer will cause an increase in part size. The paint spraying thickness needs to be reasonably controlled to meet the tolerance standards. |
|
CNC machining, Sheet Metal Fabrication, Vacuum Casting, Injection Molding |
Vary depending on the specific coating, covering a variety of materials |
The appearance effect varies greatly depending on the coating material and process used. Problems such as bubbles, particles, and pinholes may occur. |
According to the specific coating type selected, by adjusting the corresponding preparation process parameters, such as the coating material formula, curing conditions, etc., the appearance characteristics such as color, gloss, and hardness can be controlled. |
Different coatings have different impacts on dimensional tolerances. The impact on tolerances needs to be comprehensively considered according to the coating characteristics and thickness requirements. |
Surface Treatment
Appearance treatment is a series of physical or chemical processing operations performed on the external surface of products, including electroplating, spraying, anodizing, polishing, and other processes. Its effect is remarkable. It can not only improve the aesthetics and change the color, gloss, and texture of parts but also play a protective role in preventing corrosion, wear, and oxidation. It can also improve surface properties in terms of functions, such as anti-slip and anti-fingerprint properties.
Non-aesthetic post-processing
Non-aesthetic means that the parts directly processed by these post-processing processes will still retain some processing traces.
Fine machining
Passivation
Electroplating
Chemical plating
Radium engraving
Powder coating
Blackening (black oxide)
Anodizing type III (hard coating)
Aesthetic post-processing
Aesthetic or non-aesthetic treatments can be provided according to customer requirements.
Sandblasting
Wire drawing
Wire drawing + anodizing type II
Sandblasting + anodizing type II
Sandblasting + anodizing type II + laser engraving
Sandblasting + anodizing type II + screen printing
Default aesthetic
These surface treatments usually have aesthetic effects.
Mirror polishing
Vacuum plating
Wire drawing + electrolytic polishing
Put Your Parts Into Production Today
Global Custom Parts Surface Treatment
As the world's leading supplier of parts surface treatment, we offer you a wide range of customized post-processing services. No matter where you are or what parts processing requirements you have, we can create a unique surface treatment solution for you with our excellent craftsmanship!
Cross-Industry Advantages
| Need | Our Commitment | Your Benefit |
| Save Cost | Standard processes replace premium tech | 20-40% cost reduction |
| Reduce Risk | Full inspection reports (salt spray/hardness/thickness) | 48h quality issue response |
| Save Time | Shared fixture design → <30min changeover | 72h rush delivery |
| After-Sales | Free reprocessing for process defects | 90% client retention rate |
Our Principles:
Focus on production stability, not lab specs
All data is verifiable on-site
Fair pricing with zero hidden costs
Next Step: Send drawings/samples → Get process quote + test pieces in 24h!
*All solutions use conventional equipment.
Parts Appearance Acceptability Standards
All the appearance components produced by RT Manufacture follow our appearance acceptability standards:
Consistency Standards
All components in the same batch must maintain a high degree of appearance consistency, and no differences visible to the naked eye are allowed. That is:
Color consistency
Marking consistency
Assembly consistency
Shape and size consistency
Surface texture and pattern consistency
Visual Inspection Conditions
The surface quality of each part must strictly meet the following specific conditions:
Lighting conditions: The illumination is above 540LX, and the light source should be evenly distributed. It can be natural light or artificial light.
Background conditions: Generally, a black or dark background is used to enhance the contrast of surface defects of components and facilitate observation.
Observation distance: The distance between the human eye and the surface of the object to be measured is generally 15-20cm, so that the details of the component surface can be seen.
Observation angle: The inspection surface of the component should form an angle of about 45° with the desktop, and all angles, front and back, left and right, should be inspected to ensure that nothing is missed.
Observation time: For each observation surface of each component, the visual inspection time is usually not less than 5 seconds to ensure that possible appearance defects can be fully discovered.
Post-processed parts - Exhibiting Exquisite Craftsmanship
Welcome to our post-processed parts display area! Here you can find various carefully processed parts, which exhibit their unique charm. Through advanced post-processing technology, we endow the parts with excellent performance and outstanding appearance. From the surface smoothness to the detail accuracy, each part demonstrates our persistent pursuit of quality, presenting you with a feast of vision and quality and meeting your various needs for high-quality parts.
Yellow anodized parts
Sandblasting + anodizing + laser engraving CNC part
Anodizing + Silk Screen Printing
Anodized compressor parts
CNC sandblasted anodized parts
Mirror polished parts
FAQs About Post-processing
All you care about is here
How do you ensure brake bracket zinc plating lasts 480h in salt spray tests without affecting assembly precision?
Reliable Process: Standard blue/white zinc plating (8-12μm) + sealer. Passes 480h salt spray test—dimensional tolerance <0.1mm (secured by fixtures).
Cost Advantage: 30% cheaper than zinc-nickel plating. Monthly capacity: 500k pcs. Supports JIT delivery.
How can surgical instruments be processed for easy cleaning without residual fluid retention?
1. Electrolytic polishing (Ra≈0.4μm) → Reduces residue by 80%
2. Passivation (nitric acid-based) → Enhances saline corrosion resistance
3. Track Record: Zero cleaning-related complaints from medical clients in 3 years.
How can threaded holes be prevented from cracking after anodizing aluminum brackets?
Insert high-temp plugs into holes before anodizing → Remove after processing
Control anodizing thickness ≤25μm (meets HB/Z 233 standard)
Result: <0.1% crack rate in 2M+ annual fastener deliveries.
How to control color variance for sandblasted & anodized earphone cases?
Uniform sandblasting grit (#180 aluminum oxide)
Dye bath temperature control (±1°C)
Output Quality: ΔE≤1.5 (visually consistent), defect rate <3%.
How to prevent washing machine panels from fading for 5+ years?
Standard phosphating + epoxy powder coating (≥60μm)
1000h UV test = 5+ years outdoor color retention
Pricing: 20% cheaper than electrophoretic coating. Monthly capacity: 200k m².
Can QPQ-treated gears withstand abrasion in mining dust environments?
Nitrided layer depth: 0.15mm → Surface hardness HV650
Field result: 3x lifespan vs. untreated gears in coal mines
Transparent Pricing: $1.1-1.7/kg (volume discounts available).
What friction coefficient can be achieved with hard-anodized robot joints?
Standard hard anodizing (40-50μm)
Dry friction coefficient ≈0.15 (50N load)
Cost-Saving Tip: Pair with graphite grease → 20,000+ service hours.
Customer Voice
John Smith
Mechanical Engineer
The post-processing service provided by this company is outstanding. Their attention to detail and precision is remarkable. The parts I received after treatment not only met but exceeded my expectations. The surface finish was flawless, and the durability was impressive. I would highly recommend them to anyone looking for top-notch post-processing solutions.
Li Müller
Production Manager
I have been working with various post-processing suppliers, but this one stands out. They offer a wide range of options, and their team is very professional. The communication throughout the process was excellent. They helped us choose the most suitable post-processing method for our parts, and the end result was perfect. We will definitely continue our partnership.
Pierre Dubois
Quality Assurance Supervisor
I am quite satisfied with their post-processing work. They adhere to strict quality standards, and the quality control measures they have in place ensure that every part is processed to the highest quality. The environmental friendliness of their processes is also a big plus. It shows that they are a forward-thinking company. Great job!
Carlos Rodriguez
R & D Manager
I am impressed by the innovation in their post-processing techniques. They were able to apply a new coating method to our components that significantly enhanced their performance and aesthetics. It's clear that they invest in research and development, which is a valuable asset. Their team was able to handle our unique requirements with ease, and the final products have been performing exceptionally well in our applications.
Sophie Lefèvre
Supply Chain Coordinator
The turnaround time for their post-processing services is remarkable. We had a tight deadline, and they managed to deliver our parts on time without compromising on quality. Their logistics and scheduling are top-notch. Additionally, the customer service was very helpful, always ready to answer our questions and provide updates. It made the whole process very smooth and stress-free.
Case Study
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