In the swiss machining metal cutting process, the correct choice of cutting fluid can improve the productivity of metal cutting and ensure the processing accuracy of the processed material. Each cutting fluid has its own advantages and disadvantages, and each has its own use. Therefore, when swiss cnc machining different metal materials, different cutting fluids need to be selected, so that the cutting fluid and the tool can be effectively integrated into the metal cutting process. For the difficult-to-machine materials and their compatibility with cutting fluids, we provide you with a summary of the following solutions:

• Aluminum: Soft and easy to cut. If the emulsion has strong alkalinity, it will chemically react with aluminum, causing the emulsion to delaminate. Special emulsion or paraffin-based mineral oil should be used as cooling lubricant.
• Brass: a lot of fine chips are generated during cutting, which makes the emulsified oil green. The oil agent containing active sulfur can discolor the processed materials. For example, the oil selection agent needs filtering equipment.
• Bronze: Significant plastic deformation occurs before shearing, which can make the emulsion green. If the oil selection agent needs filtering equipment.
• Copper: viscous and tough, with fine curling chips during cutting, which can turn the emulsion into green, affect the stability of the emulsion, and cause stains under the action of active sulfur. If the oil agent is used, filter equipment should be equipped.
• Malleable cast iron: a large amount of fine, chemically active abrasive chips are produced during cutting. These active fines are like filter media, weakening the activity of the emulsion, and can generate iron soap, making the emulsion reddish brown, and the stability of the emulsion is deteriorated. If you use oil, you must use a centrifuge or filter to remove iron filings.
• Lead and its alloy: easy to cut, can produce lead soap, destroy the stability of emulsion. If oil is used, there is a tendency to thicken the oil, and it is necessary to prevent the use of oil containing large amounts of fat.
• Magnesium: generates fine chips during cutting and is flammable. Generally, water-based cutting fluid is not used, and low-viscosity oil can be used as cutting fluid.
• Nickel and high-nickel alloys: high heat is generated locally during cutting, and chips may sinter. Can choose heavy-duty emulsion or non-active sulfurized oil.
• Titanium: produces abrasive, flammable chips, prone to work hardening, and uses heavy-duty emulsified oil or extreme-pressure oil.
• Zinc: The cutting surface is irregular, and it is difficult to obtain a good finish. Zinc soap is formed with the emulsion to separate the emulsion. Special emulsion should be selected.