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Top Tips for CNC Turning Copper Parts: A Comprehensive Guide for Manufacturers

Copper is a highly sought-after material in the manufacturing industry due to its excellent electrical conductivity, thermal conductivity, and corrosion resistance. This makes it a popular choice for producing various components, including electrical connectors, heat sinks, and intricate parts for various industries. However, working with copper can be challenging due to its soft and ductile nature. To help you overcome these challenges, we've compiled a comprehensive guide on CNC turning copper parts for manufacturers.

Understanding the Characteristics of Copper

Before diving into the CNC turning process, it's essential to understand the properties of copper that make it both desirable and challenging to work with. Copper is:

An excellent conductor of electricity and heat

Highly resistant to corrosion

Soft and ductile, making it prone to deformation when machined

These characteristics make copper an ideal material for various applications, but its softness and ductility can lead to difficulties during the machining process.

Choosing the Right CNC Turning Tools

Selecting the appropriate tools for CNC turning copper parts is crucial for achieving the desired results. Some factors to consider when choosing tools include:

Tool material: Opt for carbide or polycrystalline diamond (PCD) tools, as they offer better wear resistance and longer tool life compared to high-speed steel (HSS) tools.

Tool geometry: Use tools with large rake angles and low cutting forces to minimize the risk of deformation and improve surface finish.

Tool coating: Consider using coated tools, such as those with titanium nitride (TiN) or titanium carbonitride (TiCN) coatings, to increase tool life and reduce friction.

Optimizing CNC Turning Parameters

To ensure successful CNC turning of copper parts, it's essential to optimize the machining parameters, including cutting speed, feed rate, and depth of cut. Some general guidelines include:

Cutting speed: Use high cutting speeds to minimize the risk of workpiece deformation and improve surface finish.

Feed rate: Employ moderate to high feed rates to prevent tool rubbing and reduce the risk of built-up edge (BUE) formation.

Depth of cut: Opt for shallow depths of cut to minimize cutting forces and reduce the risk of deformation.

Implementing Proper Coolant and Lubrication Techniques

Copper's high thermal conductivity can lead to rapid heat generation during the CNC turning process. To manage this heat and minimize tool wear, it's essential to use proper coolant and lubrication techniques. Some tips include:

Use a high-quality coolant or cutting fluid to dissipate heat and reduce friction.

Ensure proper coolant delivery to the cutting zone by employing flood cooling or high-pressure coolant systems.

Regularly check and maintain the coolant concentration and pH levels to maximize its effectiveness.

Post-Processing and Quality Control

After CNC turning copper parts, it's crucial to perform post-processing and quality control checks to ensure the parts meet the required specifications. Some steps to consider include:

Inspect the surface finish, dimensions, and tolerances of the turned parts using appropriate measuring instruments.

Perform any necessary secondary operations, such as deburring or polishing, to improve the part's appearance and functionality.

Conduct material testing, such as hardness testing or conductivity testing, to ensure the copper parts meet the required performance criteria.

By understanding the unique properties of copper, choosing the right tools, optimizing machining parameters, and implementing proper coolant and lubrication techniques, manufacturers can successfully produce high-quality CNC turned copper parts. With attention to detail and adherence to best practices, you can overcome the challenges associated with machining copper and create components that meet the demands of various industries.

CNC Copper Machining

CNC Machining Copper Material is good electrical conductivity, thermal conductivity, it is soft and good for machining as it has high plasticity, it is easily and rapidly to carry out desired shape as machining cutter can run faster than other steel materials, and also reach high precision.

Copper has a shiny reddish-orange finish, which varies slightly based on the surface finish method. Copper can be media-blasted and polished to achieve many different cosmetic surface finishes.

CNC Machining Copper Parts are widely used in the manufacture of electrical wires, cables, electric brushes, electric spark, and other electrical devices and products.

CNC Copper Machining

Benefits of CNC Copper Machining

1/ CNC Machining Copper Parts are excellent in electricity conductivity, supporting very good electric function

2/ CNC Machining Copper Parts are soft, easy to design into different shape, also suitable for many processes

3/ Copper is easy for cutting and machining, its production efficiency is much higher than steel series

4/ Good propriety for bending and shaping

5/ Heat transferring function very good, high resistance, temperature stability, long durable using

6/ Stable surface, non-surface treatment is durable, electroplating is also used on copper parts

CNC Copper Machining

Composition And Property of CNC Machining Copper

Copper Property Alloy Type Content Melting Point Hardness Tensile Strength Density
Cu-based Zn, Sn, Si, Al, Ni 1083°C HB35-45 Low 8.9 g/cm3

Common Materials Code of CNC Machining Copper

Copper Alloy Workable Processes Surface Finishing for Copper Parts Materials Code
CNC Turning, CNC Milling, CNC Drilling, Molding, Forging, Fabrication, Welding, etc. Passivation, Anodizing, Plating, Chemical Polishing, etc. Copper 110
Copper 101
Copper 145
other more Copper Alloy

Asianstar: Professional CNC Machining Supplier

From year of 2005, Asianstar Company establish the CNC Machining Factory in Guangdong Province, China.
We mostly provide CNC Turning, Milling, Drilling, Grinding, and Multi Machining processes service on various materials.
With the Belief of becoming a key supplier in the supply-chain of Precision Components, we strictly control our product quality, keep high precision on our components production, buildup the whole-process QC System and submit the satisfaction for every order.
By long term development, we have buildup partnership with world-wide clients, supporting our partners in Designing, Optimizing, Producing and Testing on each type of components.


Advantages of Asianstar CNC Copper Machining

Strong Facilities

Asianstar many CNC and stamp machines allow us to produce various copper parts, different sizes, and structures are all well done by suitable solution

Long-term Skills

Asianstar professional engineers team has experience from year 2005, producing copper parts for world wide electric products

Stable Quality

Asianstar QC system and QC tools guarantee our products are perfect result. We have procedures to control copper parts quality during production

Competitive Price

Asianstar aim to buildup partnership with clients, always choose best suitable facilities to carry out the components in competitive prices


CNC Brass Machining


CNC Machining Brass material is used for wide range components, we support clients to produce a variety of parts such as gears, locks, electronics, pipe fittings, etc.

CNC Copper Machining


CNC Machining Copper material is soft and easy to machining on different shape of components. We mostly produce copper components for electric devices by machining and stamping

CNC Aluminum Machining


CNC Machining Aluminum materials is one of our most used materials. We support clients to turning, drilling or milling on aluminum material from size 0.5mm to 470mm

CNC Stainless Steel Machining

Stainless Steel

CNC Machining Stainless Steel are common material for wide range components, we produce Stainless Steel turning parts, milling parts, high smoothness components, etc.

CNC Titanium Machining


CNC Machining Titanium material brings components superb features, we use titanium to produce high precision work-piece for clients from aircraft, aerospace, medical devices

CNC Plastic Machining


Our CNC Machining Plastic materials includes ABS, HDPE, LDPE, Nylon, POM, Peek, Polycarbonate, etc. We produce them in high precision and high smoothness.


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