Selection of Cutting Fluids, Classification of Oil-Based Cutting Fluids
发布时间：2022年08月16日 09:24
I. Cutting Fluid
Pure oil-based cutting fluid, primarily suitable for machining metallic workpieces with slow processing speeds.
Advantages:
1. Highly lubricating
2. Low maintenance
3. Good rust resistance
4. High workpiece cleanliness
5. Long tool life
6. The machine tool has a low depreciation rate.
Disadvantages:
1. The oil mist is relatively large.
2. Relatively high cost
3. Poor cooling performance
4. There is a potential fire hazard.
Water-soluble cutting fluid, fast machining speed
Advantages:
1. The cooling performance is quite good.
2. More environmentally friendly by comparison
3. Low cost in terms of material expenses
4. High compatibility for workers' use
5. Particularly suitable for use with high-speed, advanced machine tools.
Disadvantages:
1. Maintenance costs are relatively high,
2. Improper use may result in: A—odorous smell, B—rust and oxidation, C—skin allergies, D—paint peeling—leading to a high equipment depreciation rate.
II. Oil-based Cutting Fluid
Classification of oil-based cutting fluids: They can be divided into emulsified cutting fluids, semi-synthetic cutting fluids, and fully synthetic cutting fluids.
Oil-based cutting fluids based on mineral oil are semi-synthetic oil-based cutting emulsions that also contain mineral oil. Cutting fluids containing chemically synthesized base oils, such as fully synthetic cutting fluids, on the other hand, contain only chemically synthesized base oils and no mineral oil.
Metallic oil-based cutting fluids can reduce friction between the rake face and the chip, as well as between the flank face and the machined surface, forming part of a lubricating film. During the cutting process, these fluids provide lubrication that helps minimize cutting forces, friction, and power consumption. At the same time, they lower the surface temperature in the friction zone between the tool and the workpiece blank, thereby reducing tool wear and enhancing the machinability of the workpiece material.
III. Water-Soluble Cutting Fluid
1. Mineral Oil Type: With an oil content of 40% or higher, it has a milky white appearance and is primarily used in milling machines, drilling machines, and machining centers.
2. Semi-synthetic oil-based lubricants have an oil content of 10-40% and become semi-transparent when mixed with water. Occasionally, a small amount of green pigment is added to enhance visibility. These lubricants are suitable for lathes (single-point) and machining centers, offering a long service life. When the HLB value (0-12) is at 6:00, the emulsified oil will remain in a suspended state.
3. Fully Synthetic Type: This formulation incorporates additives such as rust inhibitors, biocides, defoamers, coupling agents, and passivators, making it suitable for simple grinding operations on Chinese surface grinders. It contains alkanolamines or hydroxy acids to ensure a pH value above 8, giving it a slightly alkaline nature to provide rust protection.
4. Chemical Type: Primarily uses polyether, resulting in excellent lubricity. Its drawbacks include strong corrosiveness and a tendency to cause paint chipping.
5. Vegetable Oil Type: Uses a suitable vegetable oil with good lubricity, but is significantly affected by temperature.
IV. Preparations for Adding New Oil-Based Cutting Fluid:
1. Clean the water tank using SC84 system cleaner.
2. SAE: Automotive gear oil; ISO: Industrial oil. Among these, ISO typically offers 18 grades, measured according to the 40-degree standard. Lubrication performance is optimal below 40 degrees, with a minimum value of 1 and a maximum value of 220.
V. NLGI Grease
The commonly used one is No. 2, with a needle penetration ranging from 265 to 295. The further the number goes up, the harder the butter becomes. Butter is composed of base oil, additives, and thickeners.
The above content provides a detailed introduction to the selection of cutting fluids as well as the advantages and disadvantages of oil-based cutting fluids. I hope it will be helpful to you. Stay tuned to Qingjie for more information on oil-based cutting oils.
Luoyang Qingjie Lubricants was originally a military-run enterprise under the Logistics Department of the Jinan District. In 1998, in accordance with the directive to “halt military enterprises’ production and business operations,” it was officially transferred to the management of Sinopec Group following industry-specific reorganization. In 2007, the company successfully underwent restructuring and was transformed into a limited liability company. Established in 1985, the company operates under the registered trademark “Qingjie” and is a specialized manufacturer of various lubricants. Its product range includes automotive oils, motorcycle oils, industrial oils, construction machinery oils, mechanical oils, greases, brake fluids, and antifreeze solutions. Since its establishment, the company has continuously improved its management standards and product quality. For ten consecutive years, it has been recognized as an advanced unit by the Jinan District, and was awarded the title of “Contract-abiding and Credit-worthy Enterprise” by the Henan Provincial Administration for Industry and Commerce. The “Qingjie” trademark, as a key protected brand in Henan Province, is one of the province’s most highly regarded brands.
/ Related News
Can't find the service you're looking for? Please contact us!
To inquire about our products, please leave us your email, and we’ll get back to you within 24 hours.
Phone:
Email:
Business Address:
Room 1905, Quanshun 186 Office Building, Zhanlan Road, Luolong District, Luoyang City