Precision machiningInside, a very important thing is used when processing parts, that is, oil for processing. Before this, there were two kinds of diesel and cutting oil in mechanical processing. Then after experiments, it was found that the cutting oil is better than Diesel is much better, cutting oil contains extreme pressure anti-wear agent, anti-rust agent and other additives, some may also add very good anti-wear agent, but diesel oil Without these, the choice of cutting oil during machining is the best choice at the moment. So what kind of material is matched with what kind of cutting oil? Today we will talk about it. First, choose different cutting oils according to the required material of the workpiece. Cutting oil will produce oil mist and is not conducive to observing the processing status. Be careful when doing this. Workpieces of different materials often use different cutting oils, with cold oil or hot oil, etc. Here are some instructions for different materials with different cutting oils, just for your reference.
    The processed materials have different physical and chemical properties, which reflects new problems such as the difficulty of cutting and the compatibility with cutting fluid in cutting operations. The more difficult materials and their compatibility with cutting fluids are briefly introduced as follows.
    Aluminum: Soft and easy to cut. Emulsions, such as strong alkaline, chemically react with aluminum, causing emulsion layering. Special emulsion or paraffin-based mineral oil should be used as cooling lubricant.
   Brass: A lot of fine chips are produced during cutting, which makes the emulsified oil green. Oils containing active sulfur can discolor the processed materials. For example, oil filtering agents require filtering equipment.
    Bronze: Significant plastic deformation occurs before shearing, which can make the emulsion green. If the oil selection agent requires filtering equipment.
    Copper: sticky and tough, producing 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 you choose oil, you need to be equipped with filtering equipment.
    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 deteriorates. 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, and 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 alloy: high heat is generated locally during cutting, and the chips may sinter. Can choose to use heavy-duty emulsion or non-active sulfurized oil.
    Titanium: Produces abrasive, combustible cutting, and is prone to work hardening. Use 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.

There are other materials and cutting fluids, which are not listed here.