In metal forming processes, simply applying mechanical force is not enough to achieve stable production. Under high temperature and pressure, friction, heat, and die wear are the main causes of reduced productivity and quality defects. The essential solution to these challenges is metal forming oil.

In this article, we will explore the three major roles that metal forming oils play in the field.

1. Friction Reduction

During metal forming, the workpiece and the die come into strong contact while sliding or pressing against each other. Excessive friction generates heat and increases the forming load, which places unnecessary stress on equipment.

Metal forming oil forms a lubrication film that minimizes contact between the metal and the die.

• Lower forming loads → reduced energy consumption
• Suppressed heat generation → stable process control
• Reduced friction → improved precision

In other words, friction reduction is not only about “smooth operation” but also directly contributes to higher productivity and lower costs.

2. Extended Die Life

Dies are the most critical tools in metal forming—and also the most expensive consumables. Constant exposure to friction, heat, and impact often leads to rapid wear or even breakage.

Metal forming oil minimizes die surface damage by reducing friction and providing cooling effects.

• Reduced die wear
• Lower risk of thermal cracking
• Longer maintenance cycles

As a result, die replacement intervals are extended, which significantly enhances uptime and cost efficiency in production lines.

3. Improved Surface Quality of Products

In metal forming, the appearance and surface accuracy of the final product are crucial. Severe friction may cause scratches or cracks, and oxidation can lead to defects.

Metal forming oil protects the workpiece during forming, ensuring a smooth and uniform surface.

• Prevents scratches and surface flaws
• Suppresses oxidation and discoloration
• Improves post-processing quality (painting, coating, welding, etc.)

Thus, metal forming oils play an indispensable role in ensuring the aesthetic and functional competitiveness of products.

Conclusion

Metal forming oil is more than just a lubricant—it fulfills three critical functions:

1. Friction reduction
2. Extended die life
3. Improved surface quality

Through these roles, it enhances productivity, cost efficiency, and quality at the same time. In modern metalworking industries, metal forming oils are not an option but a strategic necessity for maintaining competitiveness.

Need help choosing the right metal forming oil or want to test a sample?
We Dyna offer free consultations tailored to your production conditions.
Reach out anytime—we’re ready to help you find the optimal solution, fast.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

1. The Dilemma in Manufacturing: Speed vs. Lifespan

In metal stamping, production speed and die lifespan are often seen as conflicting goals.
Increasing speed raises heat, friction, and impact, which accelerates die wear.
Reducing speed to protect the die, however, lowers productivity and weakens cost competitiveness.

Thanks to advances in lubrication technology, this dilemma is becoming increasingly solvable.

2. The Role of Stamping Oil: Beyond Simple Lubrication

High-quality stamping oil does far more than simply reduce friction.

• Friction reduction → Protects die surfaces and minimizes wear
• Cooling effect → Controls temperature rise during high-speed stamping
• Chip and debris removal → Prevents surface defects
• Uniform coating film → Improves product surface quality

In other words, lubrication is the key solution that allows for higher speed while preserving die life.

3. Features of the Latest Lubrication Solutions

Recently developed stamping oils offer the following technical features:

• Viscosity designed for high-speed operation
  → Maintains a stable lubrication film even under high-speed conditions, maximizing protection
• High-temperature additives
  → Delivers stable performance even at instantaneous temperatures above 200 °C
• Eco-friendly, water-soluble types
  → Improves workplace environment and reduces cleaning costs
• Die material-specific optimization
  → Customized lubrication for SKD11, tungsten carbide, high-speed steel (HSS), and more

4. Proven Application Results

In the case of an electronics components manufacturer that applied a latest-generation lubrication solution to its high-speed stamping line:

• 20% increase in punching speed
• Up to 1.5× longer die lifespan
• 30% reduction in defect rate

All achieved without any equipment modifications—simply by changing the lubricant.

5. Conclusion

In today’s competitive high-speed production environment,
lubrication technology is the most cost-effective solution for achieving both speed and longevity.

It’s time to choose lubrication as a process optimization solution.

We offer high-performance stamping oils optimized for your manufacturing environments, along with customized technical support.
Experience the ideal lubrication solution for your process through our free sample tests and on-site consulting.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

Why the Right Lubricant Makes All the Difference in Fin Quality, Productivity, and Process Stability

In the highly competitive HVAC industry, manufacturers are under constant pressure to improve productivity, ensure product consistency, and reduce operating costs. When it comes to the fin stamping process — a critical step in heat exchanger production — one factor is often underestimated: the selection of stamping oil.

Fin stamping lubricants may seem like a small detail in the overall production line, but their impact is significant. From heat dissipation and surface finish to post-processing compatibility, choosing the right oil can dramatically affect the efficiency and quality of your manufacturing process.
Here’s what HVAC manufacturers should know before choosing a fin stamping oil.

Cooling Performance: Managing Heat for Dimensional Stability

During high-speed fin stamping, friction between the dies and the metal generates substantial heat. Excessive temperature can lead to:

• Metal deformation or expansion
• Reduced die life
• Inconsistent product dimensions

A high-quality fin stamping oil should provide excellent cooling capacity, dissipating heat quickly and preventing thermal distortion. This is especially important when working with thin aluminum or copper fins, which are prone to warping under thermal stress.

Viscosity: The Right Flow for the Right Film

Viscosity isn’t just a number on a datasheet — it’s one of the most important properties in stamping oil performance. Proper viscosity ensures:

• Uniform lubricant film on the metal surface
• Smooth material flow through dies
• Reduced galling, scratching, or sticking

For HVAC fin stamping, where precision is essential, the oil must be neither too thin (causing runoff) nor too thick (causing residue buildup). An optimized viscosity helps maintain consistent lubrication even at high speeds.

Volatility and Smoke Reduction: A Cleaner, Safer Workplace

In high-volume production, volatile oils can lead to:

• Excessive smoke or fumes
• High oil consumption
• Frequent fluid replenishment

Low-volatility oils improve operator safety, air quality, and cost-efficiency by minimizing evaporation during the stamping process. For HVAC facilities seeking to maintain a clean working environment and reduce downtime, this is a critical factor.

Compatibility with Post-Processes: Brazing, Coating, and Cleaning

After fin stamping, components often go through additional processes such as:

• Brazing (high-temperature metal joining)
• Coating or painting
• Degreasing or washing

If the stamping oil leaves residues that are difficult to remove, it can interfere with brazing joint strength or coating adhesion — ultimately leading to defects or rework. That’s why it’s crucial to choose a clean-burning or easy-to-clean oil that’s compatible with downstream operations.

Long-Term Efficiency and Die Protection

High-quality stamping oils are formulated not just for lubrication, but also for protecting tooling investment. They reduce:

• Die wear and tear
• Tool sticking and downtime
• Sludge or buildup on critical surfaces

By preventing premature die failure, you can extend maintenance intervals and reduce total cost of ownership.

Conclusion: Lubricant Selection is a Strategic Decision

In HVAC fin and case production, where millimeter-level accuracy, high-volume throughput, and post-process cleanliness are essential, stamping oil selection is not a secondary concern — it’s a key performance lever.

Whether you’re launching a new production line or optimizing an existing one, consult with lubrication experts and test various formulations. The right oil can help you:

• Improve product quality
• Increase press speed
• Reduce rejects
• Lower maintenance costs
• Ensure post-process compatibility

Want help finding the optimal fin stamping oil for your HVAC application?
Contact us for product recommendations, technical support, or on-site testing.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

The heat exchanger is a key component in HVAC (Heating, Ventilation, and Air Conditioning) systems, directly affecting both the system’s efficiency and durability. The fins and cases of these heat exchangers are typically made from lightweight, corrosion-resistant aluminum, and are processed through high-precision stamping operations that demand exceptional quality. In this process, stamping oil plays a critical role by reducing friction and wear between the die and material, thereby ensuring product quality and process stability.

1. Lubrication Effects and Process Stabilization of Stamping Oil

1) Friction Reduction and Die Protection

The stamping process forms metal sheets into desired shapes by applying high pressure between dies. During this process, direct contact between the die and material generates friction. Excessive friction can damage both the die and the material. Stamping oil forms a thin, durable lubricating film between them, drastically reducing friction and preventing die wear or breakage. This not only extends die life but also significantly reduces maintenance costs.

2) Prevention of Galling Defects

Aluminum tends to adhere to die surfaces, often causing galling defects—a condition where the material sticks to the die during stamping. Properly formulated stamping oil minimizes adhesion between the die and the material, reducing defect rates and preventing surface damage to the product. This also enhances the efficiency of subsequent processing steps.

3) Heat Dissipation and Process Stability

The stamping process generates substantial heat due to its high-speed, high-pressure nature. This heat can cause deformation of the die and material and degrade lubricating oils, posing a threat to process stability. High-performance stamping oils with excellent heat resistance absorb and dissipate heat effectively, keeping the temperature stable during operation and ensuring consistent lubrication performance.

4) Ease of Post-Cleaning

Excessive oil residue on the product surface can lead to contamination and require additional cleaning, causing bottlenecks in the production line. Low-residue stamping oils greatly reduce cleaning time and cost, ensure cleaner surfaces, and contribute to higher quality in downstream processes.

2. Key Considerations When Selecting Stamping Oil

• High Lubricity and EP (Extreme Pressure) Additives
  Due to the thin and intricate design of heat exchanger components, high-performance lubricants are essential. Stamping oils containing EP additives maintain a stable lubricating film under extreme pressure, minimizing wear.
• Thermal Resistance and Stability
  As stamping processes become faster, exposure to high temperatures increases. Heat-resistant stamping oils resist thermal decomposition and oxidation, maintaining lubrication performance over time.
• Eco-Friendliness and Safety
  Water-soluble stamping oils that are safe for workers and the environment are increasingly becoming the industry standard. Choosing oils that comply with environmental regulations (e.g., REACH, RoHS) helps protect worker health and supports sustainable corporate practices.
• Cleanability
  Oils with low residue content make the cleaning process easier and reduce the use of water and chemicals, thereby lowering the environmental footprint.

3. Latest Technological Trends and Innovations in Stamping Oil

In the heat exchanger manufacturing field, stamping process speed, automation, and eco-friendly lubricants are advancing rapidly. Recent innovations in stamping oils include:

• High-Performance Lubricants with Nano Additives
  Nano-particle additives significantly enhance friction reduction and die protection, extending die life far beyond conventional lubricants.
• Biodegradable and Non-Toxic Water-Soluble Oils
  These environmentally safe and worker-friendly lubricants provide high performance while improving workplace safety.
• Custom Lubricant Solutions
  Tailored stamping oils and technical support customized to each client’s process and die characteristics enable optimal production efficiency.

4. Practical Application Tips and Maintenance Guidelines

• Regular Lubricant Condition Checks
  Contaminated or degraded stamping oil can cause defects in the process. Regular inspections and timely replacement are crucial.
• Keep Die Surfaces Clean
  Ensure die surfaces are free from foreign substances and residues. Die maintenance is just as important as lubricant selection for quality assurance.
• Maintain Proper Oil Application Levels
  Lubricant volume should be neither excessive nor insufficient. Automated lubrication systems should be adjusted for precise delivery.

5. Conclusion

In the stamping process for HVAC heat exchanger fins and cases, stamping oil is more than just a lubricant—it is a key factor that determines process efficiency, product quality, die lifespan, and workplace safety. The right choice of stamping oil, along with systematic management, can reduce defect rates, cut die replacement costs, and promote both safe and environmentally friendly operations.

6. Consultation and Free Sample Test Request

We offer high-performance stamping oils optimized for heat exchanger manufacturing environments, along with customized technical support.
Experience the ideal lubrication solution for your process through our free sample tests and on-site consulting.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

In any metal cutting, stamping, or punching process, the die is one of the most valuable assets. Yet many manufacturers constantly struggle with shortened die life, frequent wear, and unexpected damage.
Surprisingly, something as simple as using the right Punching Oil can dramatically extend the life of your die.
Today, let’s take a closer look at how Punching oil impacts die performance—and what to consider when choosing the right one for your operation.

Why Punching Oil Is Essential for Die Longevity

Punching oil is not just a lubricant—it’s practically the lifeline of your die. Here’s why:

1. Protective Film to Reduce Friction and Wear
Punching processes involve high pressure and intense friction between the die and the material. Punching oil acts as a lubricant, minimizing wear and friction.
In many cases, using the right oil can extend die life by 1.5 times or more.

2. Cooling Effect to Control Heat Buildup
High-speed punching generates significant heat. If not managed, this heat can lead to thermal deformation or reduced hardness of the die.
Punching oil helps absorb and dissipate heat quickly, keeping die temperatures under control.

3. Better Product Quality? Absolutely.
Proper lubrication reduces burr formation and results in cleaner shear surfaces.
This lowers uneven loads on the die and distributes impact forces more evenly, significantly reducing the risk of die breakage.

4. Clean, Residue-Free Processing
Modern operations are increasingly looking for low-residue, easy-to-clean punching oils.
Using such oil prevents sludge buildup or debris accumulation, which can otherwise clog the die or reduce dimensional accuracy.

How to Choose the Right Punching Oil

Factor	What to Consider
Material Type	Choose oils optimized for specific materials like aluminum or stainless steel.
Punching Speed	For high-speed operations, opt for oils with excellent cooling and fluidity.
Environmental Standards	Look for eco-friendly oils—e.g., chlorine-free, sulfur-free, easy to wash, with anti-rust properties.
Target Die Life	For heavy-load conditions, consider high-viscosity and high-pressure lubrication types.

Final Thoughts: The Easiest Way to Reduce Die Costs

Manufacturing a single die can cost anywhere from thousands to tens of thousands of dollars.
If choosing the right punching oil is all it takes to extend its life—why not take a closer look at the oil you’re currently using?

Need help choosing the right punching oil or want to test a sample?
We Dyna offer free consultations tailored to your production conditions.
Reach out anytime—we’re ready to help you find the optimal solution, fast.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

Aluminum is a lightweight yet durable material widely used across numerous industries. Thin aluminum sheets, in particular, play a vital role in sectors such as automotive, aerospace, and electronics. However, aluminum Stamping—especially of thin sheets—often presents several processing challenges. These issues can significantly impact both product quality and manufacturing efficiency, making it essential to adopt appropriate solutions.

Let’s examine the common problems encountered during aluminum Stamping and how Stamping oil effectively addresses them.

1. Surface Damage (Scratches and Irregular Finish)

One of the most frequent issues in aluminum Stamping is surface damage. During the process, contact between the aluminum sheet and Stamping tools can cause scratches or create an uneven surface. This not only detracts from the product’s appearance but may also require additional post-processing.

How Stamping oil helps:

Stamping oil serves as a lubricant that reduces friction between the aluminum surface and the tool. Its lubricating properties minimize scratching and irregularities by enabling smoother material flow. When the oil’s viscosity and lubricity are properly optimized, it also helps manage frictional heat, thereby preserving surface quality throughout the process.

2. Inconsistent Thickness

In Stamping thin aluminum sheets, variations in material thickness can occur due to uneven pressure distribution or irregular material flow. This inconsistency can reduce product quality and lead to problems in subsequent processing steps.

How Stamping oil helps:

High-performance Stamping oil promotes uniform material flow during the process. By maintaining consistent friction levels between the sheet and the tool, the oil helps distribute pressure more evenly, thereby reducing thickness variations and ensuring better dimensional control.

3. Thermal Deformation and Excessive Heat Generation

Friction during Stamping generates heat, and excessive temperatures can soften aluminum, making it prone to deformation. Elevated heat can also alter the mechanical properties of aluminum, negatively affecting product integrity.

How Stamping oil helps:

Stamping oil helps dissipate frictional heat and enhances thermal conductivity, preventing excessive temperature buildup during processing. Oils with superior cooling properties lower the risk of thermal deformation and maintain material stability, resulting in higher quality parts.

4. Reduced Processing Speed

Maintaining high processing speeds is crucial for productivity. However, excessive friction can slow down operations by increasing resistance between the material and the tooling. This not only delays the process but also increases production costs.

How Stamping oil helps:

By significantly lowering friction, Stamping oil facilitates faster material flow and smoother tool operation. When viscosity and lubrication are properly balanced, processing speed increases, productivity improves, and operational costs are reduced.

5. Tool and Equipment Wear

Tool wear is an inevitable issue in Stamping operations, especially when working with materials like aluminum. Accelerated tool degradation can compromise quality, shorten tool life, and result in frequent maintenance and unexpected downtime.

How Stamping oil helps:
Stamping oil acts as a protective barrier that minimizes wear by reducing direct metal-to-metal contact. Effective lubrication extends tool life and reduces mechanical wear on equipment. As a result, maintenance costs decrease and unplanned interruptions are minimized.

Conclusion: The Importance of Stamping Oil

The various challenges in aluminum Stamping—from surface damage to tool wear—not only lower productivity but also threaten the overall quality of finished products. Stamping oil plays a vital role in solving these problems. Its lubrication and friction-reducing properties improve surface quality, stabilize processing conditions, and increase throughput. Additionally, the use of appropriate Stamping oil extends the life of machinery and tools while reducing unnecessary operational costs. As such, stamping oil is an essential factor in optimizing the aluminum Stamping process.

At DYNA, we continuously strive to develop high-performance stamping oil technologies and have been recognized for our technical expertise, supplying our products to various domestic and international companies. If you are seeking better performance and quality than your current punching oil or require technical consultation, please do not hesitate to contact us.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

As electric vehicles (EVs) revolutionize the auto industry, motor cores have emerged as critical components at the heart of EV powertrains. Yet, one essential element behind the scenes plays a decisive role in motor core manufacturing: Stamping Oil.

Dyna specializes in high-precision Stamping oil solutions, optimizing both productivity and quality in automotive motor core production with advanced industrial lubrication technologies.

Why Are Motor Cores So Important?

Motor cores are the core components of electric motors, which convert electrical energy into rotational force – powering the movement of EVs. Their performance depends on a combination of cutting-edge technologies:

• Electrical steel lamination: Layering thin electrical steel sheets to reduce eddy current loss
• Precision stamping: Micron-level forming of complex shapes
• Advanced magnetic materials: Including SMCs, amorphous alloys, and high-silicon electrical steel
• AI-powered design: Optimizing efficiency through electromagnetic field analysis

All of these processes rely on ultra-precise Stamping, cutting, and stacking — and Stamping oil is vital in ensuring these operations run reliably and efficiently.

The Global Motor Core Market: A High-Stakes Technology Race

Motor core technology is a fiercely competitive global field. Here are five of the leading players shaping the industry:

1. Mitsui High-tec (Japan)

• Founded: 1969
• Global presence in 30+ countries
• Fully integrated production from die design to manufacturing
• Market leader in motor core production
• Clients include automotive, electronics, and industrial motor manufacturers

2. POSCO International (South Korea)

• EV motor core specialist
• Global expansion:
  • Mexico Plant: 2.5 million units/year
  • Poland Plant: Targeting 1.2 million units/year by 2030
• Major client: Hyundai-Kia (secured orders of 1M+ units)
• Focus: Enhancing EV performance with high-efficiency motor cores

3. EuroGroup Laminations (Italy)

Founded: 1967

• Global manufacturing in Italy, USA, Tunisia, Russia
• Leading supplier for motors, generators, and transformers
• Expert in magnetic steel lamination and stamping

4. JFE Steel (Japan)

Key products: Super Core, JFE N-CORE, JFE G-CORE

• Pioneer in high-frequency, low iron-loss electrical steel
• Supplies base materials for EV motor cores
• Innovative use of Pure Iron Powder for complex core shapes

5. Xinzhi Group (China)

Founded: 1990 (Listed company: 002664)

• Specializes in motor stators, rotors, and assemblies
• Strong focus on in-house R&D and mold design
• Leading Chinese supplier of automotive alternator stators
• Global vision: Become a premier motor technology provider

What these companies have in common? Precision stamping. This makes the stability and reliability of the Stamping process — and by extension, Stamping oil — a critical competitive factor.

Stamping Oil: The Hidden Hero of Motor Core Quality

Stamping oil is far more than just a lubricant. In high-speed, high-precision EV motor core production, it directly impacts product quality, yield, and equipment longevity.

Key functions of Stamping oil include:

• Lubrication: Reduces friction, extending die life
• Cooling: Prevents heat buildup during high-speed stamping
• Rust prevention: Keeps electrical steel clean and corrosion-free
• Cleanability: Ensures smooth post-processing and surface cleanliness

What Sets Dyna’s Stamping Oils Apart?

Dyna offers cutting-edge Stamping oil solutions tailored specifically for EV motor core manufacturing.

Key Features:

• Chlorine-free, eco-friendly formulation with excellent thermal stability
• Optimized for high-speed stamping: Maintains lubrication under extreme conditions
• Engineered viscosity for ultra-thin materials (under 0.1mm)
• Minimizes burrs for enhanced precision and product consistency
• Custom formulations available to match your die and process conditions

Bottom Line: High-Performance Motor Cores Require High-Performance Stamping Oil

No matter how advanced your technology, unstable base processes will compromise overall quality and productivity. Stamping oil is not a consumable — it’s an invisible yet essential technology that protects the performance of high-value components.

Dyna is committed to developing and delivering lubrication technologies that power the future of the automotive industry.

Discover how our differentiated Stamping oil solutions can elevate your motor core production today.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

What is EDM?

Electrical Discharge Machining (EDM) is a non-contact machining method that uses electrical energy to shape metal without the tool directly touching the workpiece. Unlike cutting, grinding, or polishing, EDM removes material through thermal energy generated by electrical discharges.

Let’s explore the basic principles and advantages of EDM.

What is Electrical Discharge?

An electrical discharge occurs when a high voltage is applied to an insulating material, causing dielectric breakdown and allowing current to flow. Common examples include lightning and static electricity.

Even the flow of electricity from a battery to power a device is a form of discharge—current flows from the positive to the negative terminal, completing the circuit.

How EDM Works

EDM creates a series of electrical sparks between an electrode and a workpiece submerged in dielectric fluid. These sparks generate intense heat that melts the material locally. The molten metal is then rapidly cooled and expelled by vaporization, removing unwanted material and forming the desired shape.

Electrodes made of copper or graphite are typically used, and the process takes place inside specialized insulating oil or fluid (dielectric).

Types of EDM

1. Die-Sinking EDM

Uses a pre-shaped electrode with the inverse of the desired geometry. The electrode is controlled via NC (Numerical Control) machinery to move across the X and Y axes and form complex shapes.

Micro-hole EDM, using thin rod electrodes, allows the machining of deep, narrow holes that are difficult to achieve by traditional drilling.

2. Wire EDM

A thin wire acts as the electrode and cuts through the workpiece like a wire saw. It’s also automated using NC controls and is ideal for precise profile cutting.

Advantages of EDM

1. High-Precision Machining
   Achieves micrometer-level accuracy, suitable for intricate and delicate features.
2. Can Process Hard Materials
   Materials like tungsten carbide and hardened steels can be machined without needing expensive cutting tools.
3. Non-Contact Machining
   No mechanical stress is applied, reducing the risk of residual stress, deformation, or burrs.
4. Continuous Cooling During Machining
   The dielectric fluid keeps the workpiece cool, preventing thermal distortion.

Disadvantages of EDM

1. Slow Machining Speed
   Material is removed gradually, making the process unsuitable for high-volume production.
2. Cannot Machine Non-Conductive Materials
   The workpiece must be electrically conductive; otherwise, no discharge occurs.
3. Electrode Wear
   Electrodes erode during use, especially at the edges, requiring replacement to maintain precision.

Process-Specific Drawbacks

• Die-Sinking EDM: Requires custom electrode fabrication for each shape, increasing time and cost.
• Wire EDM: Since the wire is vertically aligned, it’s limited in applications where through-cuts are not possible.

About EDM Oil

In wire EDM machines, water is mainly used as the working fluid, whereas in shape EDM machines, hydrocarbon-based EDM oils are used. Initially, kerosene (paraffin), spindle oil, and hydraulic oil were used as EDM fluids, but with the development of low-viscosity petroleum-based oils, they became widely used. Later, due to concerns regarding fire hazards, odors, and skin irritation, synthetic hydrocarbon-based oils began to be more widely adopted. However, synthetic oils generally result in slower processing speeds compared to petroleum-based oils, which can reduce productivity. This has led to increased interest in the development of synthetic EDM fluids with better performance.

Reasons for Using EDM Oil in the EDM Process

1. Quick Recovery of Insulation and Stable Processing
   The use of EDM fluids helps quickly restore insulation, ensuring stable processing throughout the operation.
2. Cooling and Removal of Debris
   EDM generates debris during the process, which is rapidly cooled and removed by the fluid, maintaining the insulation state of the discharge gap. This allows for a continuous EDM cycle without loss of processing efficiency.
3. Maintaining Discharge Uniformity
   If conductive debris remains between the workpiece and the wire, the discharge can become irregular, leading to instability in the discharge gap and affecting processing accuracy. EDM fluid helps maintain uniform discharge.
4. Higher Flashpoint for Fire Prevention
   Compared to previously used kerosene or petroleum, EDM fluids with a higher flashpoint (average 100°C) reduce the risk of fire and prevent property loss. Kerosene and petroleum had lower flashpoints, exposing many companies to fire risks.
5. Reduced Consumption and Cost Savings
   The low volatility and reduced natural consumption of high-flashpoint fluids help reduce costs and improve overall cost efficiency.

For all of these reasons, EDM fluids play a critical role in ensuring “stable processing” in EDM operations.

Oxidation and Maintenance of EDM Oil

Although EDM fluids do not oxidize easily, using oxidized fluid can lead to several issues:

• Insulation recovery is impaired, causing increased processing time.
• The discharge gap widens, reducing precision.
• Abnormal discharges occur.

To prevent these issues, regular maintenance, including fluid replacement, is essential.

Our EDM Fluid Products

Our company has long recognized these issues and has developed high-quality EDM fluids using polymerized hydrocarbon-based formulas. Our EDM fluid excels in cooling and cleaning properties, offers low viscosity and high flashpoint, providing excellent insulation and reducing extreme wear, making it ideal for ultra-precision machining. Additionally, we use additives to prevent smoke and odor, maintaining a clean working environment and ensuring stability for the user.

We offer various resources and solutions to assist in your processing needs. Please feel free to contact us with any inquiries.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

In this first blog post of the year, we’ll explore one of the most essential components of electric vehicles — the drive motor, and its crucial relationship with lubricants used during manufacturing.

What is a Drive Motor?

A drive motor converts electric energy into mechanical power, enabling an EV to move. It works by delivering torque from the motor shaft (via a reduction gear) directly to the wheels.

There are two main types of electric motors: DC (Direct Current) and AC (Alternating Current) motors. Modern EVs primarily use synchronous AC motors for their superior efficiency, low noise, and high torque density.

Key Advantages of EV Drive Motors

• High Efficiency & Low Maintenance
  With fewer moving parts than internal combustion engines, EV motors offer better energy efficiency and lower long-term costs.
• Instant Torque & Responsiveness
  EVs can generate powerful torque instantly, providing strong acceleration and smooth handling.
• Regenerative Braking
  Drive motors can recover energy during braking, improving overall driving range.
• Reduced Noise & Vibration
  A smoother and quieter ride offers enhanced comfort and a better driving experience.

Market Outlook for Drive Motors

Driven by global climate goals and the transition toward carbon neutrality, the automotive industry is shifting rapidly from internal combustion to electric propulsion.
With heavy investments in EV technologies and supportive government policies, the global market for automotive drive motors is set for significant growth.

Lubricants: A Key to Precision and Performance

Both the stator and rotor — key components of a drive motor — require high-precision stamping during manufacturing.
At this stage, our metal-forming lubricants play a vital role in ensuring optimal performance and surface quality.

At Dyna, we supply specialized lubricants tailored for motor core production across various industries, including the fast-evolving EV sector.
Through continuous R&D and product refinement, we deliver premium solutions that meet our customers’ demanding standards for efficiency, durability, and quality.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/

What is Electrical Discharge Machining (EDM)?

Electrical Discharge Machining, commonly known as EDM, is a manufacturing process that removes material from a workpiece using electrical sparks generated between two electrodes — an anode and a cathode.

These electrical sparks generate extremely high temperatures, which melt or vaporize the material, allowing for precise shaping of the workpiece.

Because the sparks occur in rapid succession and affect only very small areas, EDM is particularly suitable for high-precision machining.

As a result, EDM is widely used in applications requiring fine detail and accuracy, such as micro-drilling (super drill) and wire cutting processes.

Mold manufacturing, where consistent replication of parts is critical, heavily relies on EDM due to its precision capabilities.

Key Features of EDM

1. Can machine even hard and tough materials thanks to the high heat generated during discharge.
2. Compatible with CNC systems, enabling automated and programmable operations.
3. Excellent for precision and complex shapes, making it ideal for intricate molds or components.
4. Minimal deformation of the base material, unlike some other machining methods.

Disadvantages of EDM

Despite its advantages, EDM also has some limitations:

1. Requires a specially prepared electrode for each machining job.
2. Limited choice of electrode materials, which can impact process flexibility.
3. Potential risk of fire, which is a critical safety concern.

Among these drawbacks, fire risk is the most serious and should never be overlooked.

In fact, it’s quite rare to find an EDM-specialized facility that hasn’t experienced a fire incident at least once.

Why Does Fire Risk Occur in EDM?

The fire risk associated with EDM arises from two primary causes:

1. The flammability of EDM fluids, especially when traditional oils like diesel or kerosene are used.
2. Starting the machining process before EDM fluid is properly filled, leaving sparks exposed to open air.

EDM fluids serve several essential purposes:

• Cooling the machining area
• Insulating the electrodes
• Flushing away machining debris (chips)
• Enhancing overall precision and stability of the process

In the past, diesel or kerosene was commonly used due to its low cost and resistance to high heat. However, considering that the spark temperatures during EDM can reach 8,000 to 12,000°C, these traditional fluids can pose significant fire hazards.

Importance of High-Quality EDM Fluids

Due to the extreme heat and potential ignition from electrical sparks, modern EDM fluids must have high flash points and low volatility to prevent fires.

In addition, they must:

• Provide excellent cooling and insulation
• Effectively flush out chips
• Contribute to improved machining precision

Dyna’s EDM Fluid – Product Overview

At Dynasolution, we have over 30 years of experience in manufacturing and supplying high-quality EDM fluids.

Key Features of Our EDM Fluids:

1. Highly refined, colorless, and odorless, ensuring a cleaner working environment.
2. Low-viscosity with outstanding thermal stability, suitable for extended operations.
3. High dielectric strength, enabling ultra-precise machining with minimal electrode gap.
4. No residue formation during heat treatment, resulting in excellent cleanability.
5. Special additive formulation prevents soot and odors, keeping the workspace clean and pleasant.
6. Non-irritating to skin, reducing the risk of dermatitis or other skin damage for operators.
7. Low viscosity and high flash point provide excellent operational safety.
8. Higher flash point than conventional petroleum-based oils, reducing fire risk and cutting consumption by over 70%.

For any inquiries about EDM fluids, feel free to contact Dyna Co., Ltd.
We are committed to delivering the best quality and value to our customers.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/