Post-treatment
processes
For the perfect finish and durable protection of your parts.
Why are finishing processes required for my CNC machined parts?
Post-treatment processes improve surface finish, increase accuracy and extend the life of your parts, which is essential for applications requiring high precision and durability.
What materials can you post-treat?
We can post-treat a wide range of materials, including steel, aluminum, titanium and plastics. Each material is treated with the most appropriate process for optimal results.
Can you help choose the right coating?
Yes, we can customize finishing processes based on your specific requirements. This includes adjusting tolerances, surface finishes and material treatments to meet your unique project needs.
What are the tolerances and limitations with these finishes?
Yes, we are equipped to machine complex geometries and shapes, including internal corners and hard-to-reach areas. Our advanced techniques such as EDM (Electrical Discharge Machining) enable us to realize even the most challenging designs.
How do post-treatment processes affect the cost of my project?
Although post-treatment processes are an extra step in the production process, they often lead to lower costs in the long run by extending part life, reducing defects and lowering maintenance costs. We help you find the best balance between quality and cost.
What is the minimum batch size you guys can handle?
We are flexible and can handle both small and large production volumes. For specialized or custom parts, we can even handle small batches to meet your specific needs.
How long does a post-treatment process take?
Turnaround time varies depending on the specific process and complexity of the components. Please contact us for a custom estimate.
Can you meet specific tolerances?
Yes, we can achieve very close tolerances, depending on the post-treatment process chosen and material specifications.
Refinement and Precision after CNC Machining
In the world of CNC machining, precision is crucial not only during production, but also in the post-processing of parts. At Batchforce, we focus on post-treatment processes that ensure increased quality, accuracy and durability of CNC-machined components. Our standard CNC machining accuracy is ±5 μm, with a surface roughness of Ra 0.8 – 3.2 μm. Our post-treatment processes allow us to further improve this surface roughness to Ra 0.1 – 0.4 μm. This is essential for applications in sectors such as mechanical engineering and OEM companies, where strict standards and specifications are required. Find out how we can refine and perfect your CNC components with our customized post-treatment processes.
Why Post-treatment Processes?
Post-treatment processes are essential to ensure the quality and performance of CNC machined parts. At Batchforce, we not only improve surface finishes-where we can increase quality from Ra 1.6 μm to Ra 0.2 μm-but also increase dimensional accuracy through techniques such as grinding, honing, and lapping. These processes ensure that your parts meet the highest standards of precision and reliability.
- Extension of thread life: Up to 10 times higher fatigue resistance due to thread rollers.
- Reduction of defects: 30% lower probability of mechanical failures after post-treatment.
- Cost efficiency: 20% longer component life through optimized aftertreatment.
Overview of Our Aftertreatment Processes
At Batchforce, we offer a wide range of finishing processes specifically designed to optimize the performance, durability and aesthetics of CNC machined parts. Each process is carefully selected to address the unique needs of different applications and industries.
Grinding: Precision and Finishing for High Tolerance Applications
Grinding is a precision technique used to achieve highly accurate dimensions and a smooth surface finish, ideal for applications in the aerospace and medical industries where tight tolerances and reliability are crucial.
Advantages
- Extremely Precise: Allows tolerances down to ±2 micrometers, which is essential for parts with strict dimensional requirements.
- Uniform Finish: Ensures consistent surface quality, which reduces the risk of defects and extends component life.
- Improved Reliability: By minimizing surface defects, grinding increases the structural integrity of parts.
Features
- Technique: Use of abrasive grinding wheels to remove material with high precision.
- Material compatibility: Suitable for a wide range of materials, including hardened steel, titanium, and ceramic.
- Applications: Ideal for manufacturing critical components in industries such as aerospace, medical devices, and precision instruments.
Honing: Improved Cylindricity and Surface Quality for Boreholes
Honing is a process that refines the geometry and smoothness of bore holes, crucial for parts operating under high pressure, such as in hydraulic systems and engine components.
Advantages
- Increased Cylindricity: Corrects deviations in drill holes, with improvements of up to ±0.5 micrometers, which is essential for seals and pressure-resistant applications.
- Exceptional Finish: Reduces surface roughness to Ra 0.1 micrometers, which reduces friction and extends part life.
- Enhanced Performance: Provides optimal fit and functionality, especially in applications where fluid flow and pressure consistency are critical.
Features
- Technique: Fine abrasive stones turn inside the borehole to achieve the desired geometric accuracy and finish.
- Material compatibility: Works well with steel, aluminum, and cast iron.
- Applications: Widely used in hydraulic cylinders, engine components, and any application where high accuracy of bore holes is required.
Lapping: Mirror Smooth Finish for Optical Applications
Lapping is a fine machining process that delivers a mirror-smooth finish and extreme precision in flatness and parallelism, essential for optical and measuring instruments.
Advantages
- Extremely Low Surface Roughness: Achieves roughness down to Ra 0.01 micrometers, which is essential for applications where optical clarity or minimal friction is required.
- Ultimate Flatness and Parallelism: Provides precision in flatness to ±0.1 micrometer, critical for sensitive instruments.
- Improved Functional Performance: Reduces friction and wear, improving component life and reliability.
Features
- Technique: The use of an abrasive mixture between two surfaces to remove very fine layers of material.
- Material compatibility: Ideal for soft to medium-hard materials such as copper, aluminum, and optical glass.
- Applications: Essential for manufacturing mirrors, lenses, and other optical components, as well as precision instruments.
Threaded Coils: Strong Screws for High Load
Thread rollers strengthen threads through cold forming, making them stronger and more durable, essential for automotive and construction applications.
Advantages
- Higher Tensile Strength: Increases the tensile strength of threads by 30%, essential for applications under heavy loads.
- Improved Fatigue Resistance: Increases fatigue resistance of screw threads by leaving material fibers intact.
- Durability: Produces more robust threads that are more resistant to wear and mechanical stress.
Features
- Technique: Cold forming of screw threads without removing material, which strengthens the structure.
- Material compatibility: Suitable for materials such as steel, aluminum, and copper alloys.
- Applications: Widely used in automotive components, aerospace structures, and industrial machinery.
Widening (Boring): Precise Extension of Drill Holes for Perfect Fits
Reaming is a process used to accurately enlarge drilled holes to desired dimensions, ideal for critical fits in precision instruments and mechanical parts.
Advantages
- High Accuracy: Enables precise adjustments with tolerances down to ±1 micrometer, essential for perfect fits.
- Cylindrical Consistency: Ensures a consistent cylindrical profile, which is crucial for the assembly of moving parts.
- Improved Fit: Improves functional fit of parts, increasing reliability and performance.
Features
- Technique: Using a drilling tool to accurately expand the hole to the exact size.
- Material compatibility: Effective in machining metals such as steel, brass, and aluminum.
- Applications: Essential in applications such as precision instruments, motors, and gears.
Reaming (Reaming): Fine Tuning of Drill Holes for Maximum Precision
Reaming is the process of accurately finishing drilled holes to achieve very tight tolerances and smooth surfaces, ideal for industrial applications that require a perfect fit.
Advantages
- Tight Tolerances: Achieves tolerances down to ±2 micrometers, essential for accurate assemblies.
- Smooth Finish: Provides excellent surface quality with a roughness of Ra 0.4 – 0.6 micrometers.
- Consistent Results: Provides repeatable results, which is crucial in mass production of parts.
Features
- Technique: Fine finishing of drilled holes by removing minimal amounts of material.
- Material compatibility: Suitable for steel, aluminum, and other machinable metals.
- Applications: Widely used in the production of gears, motor parts, and precision instruments.
Knurling: Increased Grip for Manual Operation Applications
Knurling is a technique that creates a ridged texture on the surface of parts, which increases grip and ease of use, especially in manual handling applications.
Advantages
- Improved Grip: Increases friction resistance, which is essential for parts such as screw heads and handles.
- Aesthetic Enhancement: Gives a professional and functional appearance to parts.
- Durability: Provides a long-lasting structure that can withstand wear and use.
Features
- Technique: Mechanical operation that applies ridges or patterns to a surface.
- Material compatibility: suitable for metals and plastics.
- Applications: Used in the manufacture of hand tools, screw clamps, and control knobs.
Inserts (Helicoils): Threaded Solutions for Soft Materials
Inserts such as Helicoils are used to create strong and durable threads in softer materials, essential for applications requiring frequent assembly and disassembly.
Advantages
- Reinforced Thread: Increases the tensile strength of threads in materials such as aluminum.
- Durability: Prevents thread misalignment, extending the life of parts.
- Easy Maintenance: Helicoils can be easily replaced, reducing maintenance costs.
Features
- Technique: Inserting spiral thread into pre-drilled holes to strengthen screw threads.
- Material compatibility: Ideal for aluminum, magnesium, and other soft alloys.
- Applications: Widely used in aerospace, automotive, and electronic applications.
Deburring: Removal of Burrs for Safety and Functionality
Deburring is the process of removing sharp edges and burrs created during production, crucial for improving the safety, aesthetics and functionality of the final product.
Advantages
- Safety: Removes sharp edges that may cause injury or damage to other parts.
- Enhanced Aesthetics: Provides a smooth and attractive surface, which is important for visible parts.
- Increased Functionality: Reduces the likelihood of mechanical failure by eliminating irregularities.
Features
- Technique: Mechanical, thermal, or chemical removal of burrs from the surface.
- Material compatibility: Suitable for all machinable materials, including metals and plastics.
- Applications: Widely used in automotive, aerospace, and consumer products.
Polishing: Improved Aesthetics and Corrosion Resistance
Polishing is a surface treatment process that provides a smooth, shiny surface and improves corrosion resistance, essential for parts used in visible or corrosive environments.
Advantages
- Enhanced Aesthetics: Creates a high gloss finish, which improves the appearance of the part.
- Increased Corrosion Resistance: Reduces surface imperfections that can cause corrosion.
- Easy Maintenance: The smooth surface makes it easier to clean and maintain the part.
Features
- Technique: Mechanical or chemical treatment to refine the surface and add luster.
- Material compatibility: Suitable for metals such as stainless steel, copper, and aluminum.
- Applications: Widely used in medical devices, food processing, and luxury consumer products.
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