PEEK is used in cutting-edge fields, and processing requires depilation, high-quality tools, proper cooling, depressurization, optimization of parameters, selection of the right drills, and prevention of contamination; medical-grade PEEK requires special attention to safety and cleanliness.
PEEK, as a thermoplastic specialty engineering plastic, can be used to make compatible plastic parts for a variety of applications.The unique physical and chemical properties, as well as its durability, make it work well with most cutting-edge fields and working conditions.
Process tips to ensure high precision machining of PEEK parts:
1. Pre-machine depilation
Before PEEK injection molding process molding, need to depilate pre-heating treatment, through this process, can improve the degree of crystallinity, relieve the internal stress produced by peek molding parts
2. Improve cutting tool quality
In the PEEK plate and bar CNC proofing finishing, due to the high strength characteristics of the peek itself, the ordinary prop cutting will have wear and flying edge, so you need to use a special alloy cutter head for processing, such as the addition of glass fiber or carbon fiber PEEK material, you must choose a stronger tool, so that you can get a higher accuracy of the PEEK machining parts.
3. Degree of heat dissipation
As a rule, PEEK does not dissipate heat during machining, so it is necessary to ensure a proper cooling process. For this purpose, coolant must be used to effectively prevent deformation and cracking.
But for medical grade PEEK parts processing, these coolants will not work, even in the medical field is not safe to use, to cold blood medical grade PEEK, compressed air is needed to ensure that the use of the environment of medical safety.
4. Special treatment for stress reduction
Since PEEK is prone to internal stresses, only a depilatory process can ensure that the entire injection molding process runs smoothly. You should handle PEEK carefully throughout the processing works to minimize profitability and prevent potential damage to PEEK parts. Reduce cutting forces or use sharp tools. Zhejiang helps you avoid overheating and pressure buildup.
5. Optimize machine parameters
In order to effectively complete PEEK machining without any problems, setting the correct machining parameters is key. When drilling, milling and turning PEEK material, you need to use the correct cutting speed and feed rate.
6. Caution for drill bits
PEEK has a low elongation. This means that when you put pressure on it, it can't stretch like other types of plastic. Therefore, when you drill holes in it, the buildup of pressure can cause damage to it.
To overcome this problem, you should choose the right drill bit. Vacuum can be used to remove debris quickly if necessary.
7. Avoid contamination
You need to make sure that the overall processing of medical grade PEEK parts is clean, as they need to be medically safe for use
