The Application of Chlorinated Paraffin in Cutting Oils and Industrial Lubricants
In the metalworking and machining industry, friction and heat are the two main enemies of equipment. When cutting tools come into contact with hard metals at high speeds, the temperature at the contact point rises drastically. This is exactly where the application of Chlorinated Paraffin in cutting oils becomes vitally important.
Chlorinated Paraffin is known as one of the most important “Extreme Pressure” (EP) additives in the formulation of industrial oils. In this article from the Maad Chlor Azarabadegan blog, we will examine the role of this chemical in the lubricant industry, its mechanism of action, and the benefits of using it in detail.
Why Do Cutting Oils Need Chlorinated Paraffin?
Base Oils alone cannot withstand the harsh conditions of heavy-duty machining. When the pressure between the drill bit and the workpiece becomes too high, the film of ordinary oil ruptures, causing metal-to-metal contact, which leads to microscopic welding and tool failure.
Chlorinated Paraffin is added to the oil as an EP Additive to become active at high temperatures and pressures. By creating a protective chemical layer on the metal surface, this substance prevents wear and facilitates the cutting operation.
4 Key Advantages of Using Chlorinated Paraffin in Lubricants
Using Chlorinated Paraffin (especially the 52% grade produced with the highest purity at Maad Chlor) offers the following benefits for oil manufacturers and industrial workshops:
- Significant Increase in Tool Life: By reducing friction, blades and drill bits dull much slower and require less frequent replacement.
- Improved Surface Finish: Preventing chips from welding to the tool ensures the workpiece surface remains smooth and polished.
- Reduced Energy Consumption: When friction is low, the machine endures less pressure and consumes less electricity.
- Cost-Effectiveness: Compared to other EP additives like sulfur or phosphorus compounds, Chlorinated Paraffin has a more reasonable price and offers high chemical stability.
Mechanism of Action: How Does Chlorinated Paraffin Work?
You might wonder how this viscous liquid prevents extreme friction. The answer lies in high-temperature chemistry.
When the temperature rises during cutting (usually between 200 to 600 degrees Celsius), the chlorine atoms present in the paraffin are released and react with the metal surface. This reaction results in the formation of a thin layer of metal chloride (such as iron chloride).
This solid yet slippery layer acts like a shield, preventing the cutting tool and the workpiece from grinding directly against each other. Interestingly, this reaction happens exactly when it is needed (i.e., when the temperature rises).
Investigating Compatibility with Metals (Crucial Technical Note)
Limitations and Important Points in Machining Non-Ferrous Metals
One of the key points that chemical engineers and production managers must consider is the reactivity of chlorine with specific metals. Although Chlorinated Paraffin works miracles for alloy steels, stainless steel, and hard metals, caution must be exercised regarding non-ferrous metals.
- Sensitivity of Copper and Brass: Chlorine atoms released at high temperatures can react with copper, causing staining on the workpiece.
- What is the Solution? If your produced oil is to be used for machining copper or brass, you must use Chlorinated Paraffin with very high stability and definitely utilize Corrosion Inhibitors in your formulation. Maad Chlor’s produced Chlorinated Paraffin, due to its high purity and appropriate stability, poses the lowest risk in this regard, though consulting with the technical unit for specific formulations is recommended.
Chlorinated Paraffin 52%; The Best Option for Soluble Oils
Among various grades, Chlorinated Paraffin 52% is the most widely used type in the lubricant manufacturing industry. The reason for this popularity is the excellent balance between viscosity and active chlorine content.
This product is used in the production of various lubricants, including:
- Neat Cutting Oils: For heavy operations like threading and gear cutting.
- Soluble Oils: Also known as “coolant” or soluble oil emulsions used in CNC machines.
- Deep Drawing Oils: For shaping metals under extremely high pressure.
Maad Chlor Specialist Note: The viscosity and light color of our produced Chlorinated Paraffin ensure that the final color of your industrial oil does not change and the emulsion stability in soluble oils is maintained.
Dosage and Formulation (For Manufacturers)
Recommended Composition Percentage in Industrial Oil Formulations
The amount of Chlorinated Paraffin used varies depending on the type of operation and the hardness of the metal. Based on common lubricant industry standards, the following percentages are recommended to achieve the best performance:
| Type of Machining Operation | Recommended CP Percentage | Main Goal |
| Light & General Turning | 3% to 5% | General lubrication and cooling |
| Drilling & Milling | 5% to 10% | Preventing drill breakage and tool wear |
| Gear Cutting | 10% to 20% | Withstanding very high instantaneous pressures |
| Deep Drawing | 30% to 50% | Complete prevention of metal sheet tearing |
Important Note: Exceeding the allowed limit may cause an excessive increase in oil viscosity. Maad Chlor products, with standard viscosity, allow formulators to precisely adjust the concentration.
Is There a Substitute for Chlorinated Paraffin?
Although efforts have been made in recent years to use polymer esters, no material has yet been able to compete with Chlorinated Paraffin in terms of the performance-to-price ratio. For this reason, this material remains the undisputed king of high-pressure additives in the global metalworking industry.
Detecting Paraffin Quality (Buying Guide)
3 Signs of Low-Quality Chlorinated Paraffin That Will Ruin Your Oil
Unfortunately, low-quality or recycled samples of Chlorinated Paraffin exist in the market, which can challenge the oil production line. When purchasing raw materials for your factory, be sure to pay attention to these 3 items:
- Low Thermal Stability: If the paraffin decomposes at temperatures lower than the standard, it causes the oil to darken quickly and creates a very bad smell (acidic burnt smell) in the workshop.
- Cloudy Color: High-quality Chlorinated Paraffin 52% should be transparent and clear (Water White or at most very pale yellow). Dark color indicates petroleum impurities.
- High Acidity: The presence of free acid in a low-quality product causes corrosion of tanks and CNC machines.
In the Maad Chlor Azarabadegan Quality Control Laboratory, all shipments are tested for thermal stability and acidity before departure so that oil manufacturers can be assured of the final product’s health.
Conclusion and Guide to Buying Chlorinated Paraffin from Maad Chlor Factory
As we reviewed, Chlorinated Paraffin in the lubricant industry is not just a simple additive; it is the guarantor of the health of expensive CNC machines and the final quality of your industrial parts. For oil manufacturers, using paraffin that does not turn black at high temperatures (thermal stability) and has real purity is the production red line.
Maad Chlor Azarabadegan Company, understanding the sensitivity of your work, produces and supplies standard Chlorinated Paraffin 52% adhering to the strictest quality protocols and safe packaging (HDPE). We have eliminated intermediaries so you can obtain the best quality at direct factory prices (from East Azerbaijan).
Why Choose Maad Chlor?
✅ Purity Guarantee: Providing a precise laboratory analysis sheet with every shipment.
✅ Color Stability: No darkening or phase separation in your final oil.
✅ Nationwide Shipping: Fast supply in bulk and drums to all points of Iran.
📞 Price Inquiry and Specialist Consultation
To receive the current price (bulk and drum) and free technical advice regarding usage, contact our sales team right now:
📞 Direct connection with sales experts: +98 (21) 88287251
💬 Price inquiry and online order registration: +98 9120199853
Factory Address: Professor Hashtroudi Industrial Estate, East Azerbaijan
