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What are the common tool materials for medium and large PTFE film chippers? How do tools of different materials differ in cutting speed, service life and applicable film thickness range?
The tool materials for medium and large PTFE film chippers are usually the following, and they differ in cutting speed, service life and applicable film thickness range:
High-speed steel tools
Cutting speed: relatively moderate. Since high-speed steel has good toughness and a certain hardness, it can withstand the impact during cutting to a certain extent and can adapt to medium-speed cutting of PTFE film. The general line speed is about 50-150m/min.
Service life: When processing PTFE film, if the cutting parameters are selected appropriately, for general production intensity, the service life can meet certain processing batch requirements and can be used multiple times after proper sharpening. However, if the processing environment is harsh or the cutting parameters are inappropriate, the wear will be relatively fast.
Applicable film thickness range: more suitable for processing PTFE film with a thickness of about 0.05-0.5mm. For thinner films, the sharpness of the high-speed steel tool can better control the cutting and avoid film tearing; for films of a certain thickness, its strength and toughness can also ensure the stability of the cutting process.
Carbide tools
Cutting speed: It can achieve a higher cutting speed, generally reaching 150-300m/min or even higher. Carbide has higher hardness and heat resistance, and can maintain better cutting performance during high-speed cutting, reduce tool wear, and improve production efficiency.
Service life: It has a long service life. The high hardness and wear resistance of cemented carbide enable it to withstand greater cutting force and friction when cutting polytetrafluoroethylene film, and the wear rate is slower. Under normal production conditions, a large number of films can be processed continuously, reducing the frequency of tool replacement.
Applicable film thickness range: It is suitable for polytetrafluoroethylene films of various thicknesses, from thinner films of about 0.03mm to 1mm or even thicker films. For thick films, the high strength and wear resistance of carbide tools can ensure smooth cutting; for thin films, their sharp edges and high precision can also ensure processing quality.
Diamond tools
Cutting speed: The cutting speed is extremely high. Theoretically, it can reach a very high linear speed, usually above 300m/min. When processing polytetrafluoroethylene films, ultra-high-speed cutting can be achieved, greatly improving production efficiency.
Service life: The service life is very long. Diamond is the hardest substance in nature. It has extremely high wear resistance and corrosion resistance. It will hardly produce wear when cutting polytetrafluoroethylene films, and can maintain the sharpness and precision of the tool for a long time.
Applicable film thickness range: It has unique advantages when processing extremely thin polytetrafluoroethylene films, such as 0.02-0.05mm films. Its edge can be sharpened to achieve high-precision cutting, ensuring the integrity and surface quality of the film. However, for overly thick films, due to the high cost and relatively large brittleness of diamond tools, they are generally less used.
