Selection of Cutting Fluid During CNC Centering Machine Processing

Selection of cutting fluid during CNC centering machine processing

In the metal cutting process of the centering machine, the correct selection of cutting fluid can improve the productivity of metal cutting and ensure the processing accuracy of the materials being processed. Each cutting fluid has its own advantages and disadvantages, and each has its own uses. Therefore, it is necessary to use different cutting fluids when processing different metal materials on the centering machine, so that the cutting fluid and the tool can be effectively integrated into the metal cutting process.

Aiming at the problems of difficult-to-machine materials and their compatibility with cutting fluids, we summarize the following solutions to provide you with a reference:

Aluminum: soft, easy to stick to cutting tools when cutting. If the emulsion is highly alkaline, it will react chemically with aluminum, causing the emulsion to stratify. Special emulsion or paraffin-based mineral oil should be used as cooling lubricant.

Brass: A large amount of fine chips are produced during cutting, which can easily turn the emulsified oil green. Oil agents containing active sulfur can cause discoloration of processing materials. For example, oil selection agents require filtering equipment.

Bronze: Significant plastic deformation occurs before shearing, which can turn the emulsion green. For example, oil selection agents must have filtering equipment.

Copper: sticky and tough, producing fine curled chips during cutting, which can turn the emulsion green, affect the stability of the emulsion, and cause stains under the action of active sulfur. If you choose oil agent, you must be equipped with filtering equipment.

Malleable cast iron: A large amount of fine chemically active abrasive chips are produced during cutting. These active fines act like filter media, weakening the activity of the emulsion, and can produce iron soap, turning the emulsion into reddish brown, and worsening the stability of the emulsion. If oil is used, iron filings must be removed with a centrifuge or filter.

Lead and its alloys: easy to cut, can produce lead soap, and destabilize the emulsion. If you use oil, it will tend to thicken, so avoid using oils containing a lot of fat.

Magnesium: Fine chips are produced during cutting and are 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 the chips may sinter. Heavy-duty emulsions or non-reactive vulcanized oils are available.

Titanium: produces abrasive and flammable chips and is prone to work hardening. Heavy-duty emulsified oil or extreme pressure oil should be used.

Zinc: The cutting surface is irregular and it is difficult to obtain a good finish. Zinc soap forms with the emulsion, causing the emulsion to separate. A special emulsion should be selected.