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PTJ Manufacturing Shop

What cutting fluid is better for aluminum alloy machining?

What cutting fluid is better for aluminum alloy machining?

Some problems often encountered by aluminum machining manufacturers are summarized as follows:

The working fluid is prone to odor and deterioration, which has a greater impact on the working environment of the workshop;1. The working fluid is prone to odor and deterioration, which has a greater impact on the working environment of the workshop;

2. The lubrication performance is not enough, the quality of the workpiece is poor, and the surface roughness is not as good as expected;

3. The cutting fluid has a strong odor and emits a headache-induced odor;

4. Injured hands, skin rash, erosion, and allergies;

5. Oxidation, rust and decay of aluminum;

6. Additives containing toxic ingredients pose a risk of carcinogenesis;

7. Inadequate cooling and lubricity, and stick-knife phenomenon;

8. Management troubles and high staff turnover rate;

9. The tool wears and costs increase.

The choice of lubricants should be solved from the problem, and analyzed and treated according to customer needs and the physical properties of aluminum materials. Compared with most steel and cast iron materials, aluminum alloys have many obvious characteristics in terms of physical properties: strength, hardness and Compared with pure aluminum, it has a lot of improvement, but it has lower strength and hardness compared with steel, less cutting force and good thermal conductivity. Because the aluminum alloy is soft and has high plasticity, it is easy to stick to the knife during cutting and build up chippings on the tool. Welding may occur on the cutting edge during high-speed cutting, which will cause the tool to lose cutting ability and affect machining accuracy and surface roughness. In addition, the aluminum alloy has a large thermal expansion coefficient, and the cutting heat easily causes thermal deformation of the workpiece, reducing the machining aluminum accuracy. The corrosion forms of aluminum alloys are mainly discoloration and pitting. The surface of aluminum changes from brown to black, and large areas of discoloration will not cause pitting. The pitting corrosion is small and deep erosion, but sometimes the pitting corrosion communicates with each other to form a large hole, which precipitates a white powder, commonly known as white rust.

In summary, the choice of cutting fluid for aluminum alloy machining is very important. It must ensure good lubricity, cooling, filtering and rust resistance. Therefore, the cutting fluid used for aluminum alloy machining is different from ordinary cutting fluid. A suitable cutting fluid is necessary. PTJ has good experience in selecting lubricants. For the speciality of aluminum materials, choose the appropriate cutting fluid to ensure that aluminum machining is fast and good.


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Automatic Bar Machining capacity for parts from 1/16" to 2 5/8”
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Screw Machine Products – precision components from a broad variety of materials & Equipment
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High Volume Machining – Specialized in machined parts exceeding 1,000 pieces up to millions of pieces for optimum efficiency
CNC Milling - Machining from bar stock, plate or block metal using up to 3 axis of motion
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