In all kinds of machine tools, what is the role of cutting fluid and what are the hazards

The effect of cooling, but it is easy to corrode the surface of the workpiece, and the finish is not very good.

The functions of cutting fluids are as follows:

1. Lubrication. The lubrication effect of metal cutting fluid in the cutting process can reduce the friction between rake face and chip, flank face and machined surface, form part of the lubrication film, thereby reducing cutting force, friction and power consumption, reducing the surface temperature and tool wear of the friction part between the tool and the workpiece blank, and improving the cutting performance of the workpiece material.

2. Cooling. The cooling effect of the cutting fluid is through it and the heating is caused by the cutting.

The convection and vaporization between the tool (or grinding wheel), the chip and the workpiece take the cutting heat away from the tool and the workpiece, so as to effectively reduce the cutting temperature, reduce the thermal deformation of the workpiece and the tool, maintain the hardness of the tool, and improve the machining accuracy and tool durability.

3. Cleaning. The flow of cutting fluid washes away fine chips and dislodged abrasive particles in the cutting area and on the machine guide, which is important for grinding, deep hole machining, and automatic line machining. The cleaning ability of the cutting fluid is related to its protective film, or the combination with the metal to form a passivation film, which can play a good permeability, fluidity and use pressure on the workpiece, machine tool and tool, and is also affected by surfactants.

Performance impact.

4. Anti-rust. After adding anti-rust additives to the cutting fluid, it can form a strong anti-rust and anti-corrosion effect on the surface of the metal material.

5. Other functions.

In addition to the above four functions, the cutting fluid used should have good stability, and there should be no precipitation or stratification, oil separation, soap separation and aging during storage and use. It has a certain resistance to bacteria and mold, and is not easy to grow mold and biodegradation and cause odor and deterioration.

Cutting fluid is a kind of industrial liquid used in the process of metal cutting and grinding to cool and lubricate tools and workpieces, cutting fluid is made of a variety of super functional additives through scientific compounding, and has good cooling performance, lubrication performance, anti-rust performance, degreasing and cleaning function, anti-corrosion function, easy dilution characteristics.

Moreover, cutting fluids are also divided into: semi-synthetic cutting fluids, fully synthetic cutting fluids and emulsified cutting fluids.

Water-based cutting fluids can be divided into emulsions, semi-synthetic cutting fluids and fully synthetic cutting fluids.

The classification of emulsions, semi-synthetic and fully synthetic usually depends on the type of base oil in the product, which is a water-soluble cutting fluid that uses only mineral oil as the base oil; Semi-synthetic cutting fluids are water-soluble cutting fluids that contain both mineral and synthetic base oils, while fully synthetic cutting fluids are water-soluble cutting fluids that use only chemically synthesized base oils (i.e., no mineral oils).

Each type of cutting fluid will contain a variety of additives other than base oils: rust inhibitors, non-ferrous corrosion passivators, defoamers, etc. Some microemulsions are classified as being between emulsions and semi-synthetic cutting fluids.

The dilution of the emulsion is milky white in appearance, the dilution of the semi-synthetic solution is usually translucent, there are also some products that are milky white, and the dilution of the all-synthetic solution is usually completely transparent like water or slightly colored in a certain color.

The role of cutting fluid is to improve machining quality, reduce costs and improve machining efficiency.

The cutting fluid can absorb and take away the heat generated during the cutting process, effectively reduce the cutting temperature, prevent the tool and workpiece from overheating, reduce tool wear and deformation, and prolong the tool life. Cutting fluid can reduce friction in the cutting process, reduce cutting force and power consumption, and improve machining efficiency. It lubricates the contact surface between the tool and the workpiece, reducing frictional heat and wear.

The cutting fluid can flush the cutting area, take away the chips, cutting oil residue and other impurities generated during the cutting process, maintain the cleanliness of the machined surface, and avoid clogging the tool and cutting area.

Anti-guessing rust agent is usually added to the cutting fluid, which can form a protective film on the surface of the workpiece and the tool to prevent oxidation and corrosion, and prolong the service life of Changzhaoxing workpiece. In general, the correct selection and use of cutting fluids can improve the stability and reliability of the cutting process, reduce cutting failures and tool wear, and improve the results of metal cutting.

Precautions for purchasing cutting fluid

1. Choose cutting fluid according to the cutting material: Different cutting materials need to use different types of cutting fluid. For example, for steel cutting, steel-specific cutting fluids can be selected; For aluminum cutting, you can choose a special cutting fluid for aluminum.

Choosing the right cutting fluid according to the cutting material can improve the cutting effect and tool life.

2. Consider the processing method: The selection of cutting fluid should also consider the processing method, such as milling, turning, drilling, etc. Different processing methods have different requirements for cutting fluids.

For example, good cooling and lubrication properties are required for milling, and good cooling properties are required for drilling.

3. Pay attention to environmental performance: pay attention to its environmental protection performance when selecting cutting fluid. A good cutting fluid should be low in volatility and toxicity to reduce the impact on the environment and people. You can choose products that meet environmental standards.

There will be no harm.

The current cutting fluid is clean, environmentally friendly, non-odorous, non-toxic and tasteless, and has no adverse reactions to the world.

Cutting fluid (coolant) is an industrial fluid used in the process of metal cutting and grinding to cool and lubricate tools and machined parts.

It is made of a variety of super functional additives through scientific compounding, and has good cooling performance, lubrication performance, anti-rust performance, degreasing and cleaning function, anti-corrosion function, and easy dilution characteristics. And it has the characteristics of non-toxic, tasteless, non-erosive to the human body, non-corrosive to equipment, and non-polluting to the environment.

The water-soluble cutting fluid on the market is an environmentally friendly product, which itself will not cause harm to the human body, but in the process of cutting fluid use and metals, oils, impurities, other pollutants after long-term contact with bacteria, if the cutting fluid is not purified, there will be dermatitis after hand contact.

Is water harmful to people? Sometimes water is used as cutting fluid? So don't worry.

Common ones are emulsified oil with water (fast wire cutting, grinder), oil (CNC), spark oil, purified water or distilled water (WEDM).

Several major functions of cutting fluid!

1.Reduce the temperature.

2.Wash away the processed residue.

3.Increase surface finish.

4.Acts as a discharge medium (WEDM).

Let me tell you that the main role of cutting fluid is cooling, lubrication, to help the tool reduce wear - improve the product smooth and clean degree, as for the cleaning of the words as long as the liquid can wash away the processed metal foam, cutting fluid is generally divided according to the oil content, there is pure oil metalworking oil, the oil content is relatively high emulsion, the oil content is a little lower semi-synthetic, completely oil-free fully synthetic, the choice is according to the metal grade you need to process, the processing form to determine, is it grinding or cutting, or grinding? It's all about it.

The main ones are cooling, reducing prop wear, accelerating the cutting speed, etc. I divided it according to material or phase and forgot ......

The use of metalworking fluid is an indispensable part of the metalworking manufacturing process, and it is even more powerful for cutting tools, of course, this is often due to the powerful four properties of metalworking fluid. Grinding machine cutting fluids also have the following basic functions.

1. Lubrication performance.

1) Lubrication during the cutting process.

The lubricity of metal cutting fluid can reduce the friction between rake face and metal chips, flank face and machined parts, and also form a layer of lubrication protective film, which can reduce friction resistance and power consumption during cutting, and also reduce the surface temperature of tools and workments, reduce tool wear to a certain extent, prolong tool life, and improve production efficiency.

2) Lubrication during grinding.

In the grinding process, when the metal cutting fluid penetrates into the workpiece, the grinding wheel grinding and the abrasive grinding chips, the lubricity of the metal cutting fluid will form a lubricating film at a certain interface, thereby reducing friction and avoiding the adhesion of abrasive chips.

Cause wear on the grinding wheel, improve the use of the grinding wheel and the quality of the workpiece.

2. Cooling performance.

The coolability of metal cutting fluid is not closely related to its thermal conductivity, specific heat, heat of vaporization and viscosity, for example, the cooling performance of some water-based metal cutting fluids is higher than that of oil-based cutting fluids, so the thermal conductivity of water is much higher than that of oil.

Therefore, the coolability of metal cutting fluid is to take away the heat of the department when cutting at high speed when the chips are cut at high speed, but most of the heat is the cooling of the cutting fluid, which can effectively reduce the cutting temperature and avoid the result of deformation of the tool or workpiece due to high temperature, so as to improve the hardness of the tool and machining accuracy.

3. Cleaning performance.

In addition to increasing the durability of the tool and the accuracy of the workpiece, metal cutting fluid also has excellent cleaning properties during machining. For the chips, abrasive chips, oil stains and grit and other substances generated during metal cutting, they can be washed to avoid contamination of the machine tool, tool and workpiece, so that the tool can remain sharp and bright, and does not affect the metal cutting effect.

As a new generation of products, the water ** is a cutting fluid, which contains surfactants that can form an adsorption film on the surface of tools, workpieces or grinding wheels, easily remove impurities such as oil stains and chips, and can also penetrate into the interface of oil stains and grit adhesion to make the two separate, and the cleaning power is strong.

4. Anti-rust performance.

In the process of metal cutting, the material of some workpieces is relatively special, and it will react or deteriorate in the atmospheric environment, and then contact with the corrosive medium produced by the decomposition or oxidation of some components in the cutting fluid, so that the machine tool and the workpiece are corroded or rusted, so in the storage and use of the cutting fluid, the metal cutting fluid is required to have a certain rust resistance, which can prevent all the dirt in contact with the processing process from corroding the workpiece. Especially in some humid or rainy areas in the south, it is necessary to pay more attention to the anti-rust measures of machine tools and workpiece processing.

In addition to the above four properties, metal cutting fluids also have other advantages, such as good stability, excellent sterilization, and long-term storage.