The Role of PEG400 (CAS 25322-68-3) in Efficient Metal Machining

In the vast landscape of industrial manufacturing, polyethylene glycol (PEG), with the CAS number 25322-68-3, is a crucial class of chemical substance. Depending on its molecular weight, it can be categorized into different types such as PEG200, PEG400, PEG600, and PEG1000, each leveraging its distinct properties to serve specific applications. Among them, PEG400 stands out in the field of metal processing due to its unique advantages.

PEG400 possesses a series of distinctive physical and chemical properties. It exhibits excellent water solubility, allowing it to disperse uniformly in various aqueous systems. It also offers outstanding lubricity, effectively reducing friction between surfaces. Moreover, it demonstrates good thermal stability, maintaining performance over a certain temperature range. Additionally, it is low in toxicity and environmentally friendly, aligning with modern industry's demand for green chemistry.

In metal wire drawing processes, PEG400 plays a pivotal role. During wire drawing, intense friction occurs between the metal wire and the die, which not only hinders the smooth progress of the process and reduces drawing speed but also increases the risk of wire breakage. As a lubricant, PEG400 molecules uniformly adhere to the surfaces of both the metal wire and the die, forming a lubricating film. This film acts as a protective layer, effectively minimizing direct contact between the wire and the die, thereby reducing friction. As a result, the drawing process becomes smoother, drawing speed improves, and wire breakage is significantly reduced, ensuring production continuity and stability.

In the stamping and forming of metal sheets, PEG400 is equally indispensable. During stamping, the high-pressure contact between the metal sheet and the die can easily cause scratches, compromising the appearance and quality of the workpiece. It can also accelerate die wear and shorten its service life. The lubricating effect of PEG400 creates a barrier between the metal sheet and the die, reducing friction and impact, thereby preventing scratches. Furthermore, it provides a certain buffering effect, mitigating the impact force on the die and extending its service life, ultimately lowering production costs.

In cutting and grinding fluids, PEG400 serves as a cooling and lubricating agent, effectively preventing workpiece overheating caused by friction-generated heat during machining. By forming a lubricating film between the tool and the workpiece, it reduces friction-induced heat. Simultaneously, its good thermal conductivity helps dissipate heat quickly, providing a cooling effect. This not only enhances machining precision but also results in a smoother workpiece surface, improving the overall quality of the product.

Compared to traditional mineral oil lubricants, PEG400 is easy to clean, leaves no residue, does not pollute the environment, and has low toxicity to humans, making it a more ideal choice for metal processing applications.

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