CNC Milling Polycarbonate (PC) With High Toughness and Good Properties

√Milling Polycarbonate (PC)

√CNC Plastic Low Volume Parts

Plastic PC/ABS/Nylon/POM(Delrin) /PTFE/HDPE/PEEK

Products description

FAQ

QIs Polycarbonate (PC) a plastic?

A: Polycarbonate is a thermoplastic engineering plastic with excellent performance, with a density of 1.2 g/m3. Specific good toughness and rigidity, good impact resistance; molding shrinkage rate is generally 0.5%-0.8%, so the molded parts can achieve good dimensional accuracy, and maintain its dimensional stability in a wide range of temperature changes.

 

It has good creep resistance, wear resistance, heat resistance, cold resistance and good weather resistance, and excellent electrical properties. Polycarbonate has a low water absorption rate. It is resistant to water, dilute acids, oxidants and reducing agents, salts, oils, and aliphatic hydrocarbons at room temperature, but it is not resistant to alkalis, amines, ketones, esters, and aromatic hydrocarbons; the embrittlement temperature is less than- 100°C; heat distortion temperature is 135-143°C, it can be increased by about 15°C after being reinforced with glass fiber, and the normal working temperature can reach 120°C.

 

Q: What’s the main properties of Polycarbonate (PC)

A:1. It has high strength and elastic coefficient, high impact strength, and wide temperature range;

2. High transparency and free dyeability;

3. Low molding shrinkage and good dimensional stability;

4. Good fatigue resistance;

5. Good weather resistance;

6. Excellent electrical characteristics.

 

Q: Can you CNC plastic?

A: Because the performance of plastic is different from that of metal and wood, the thermal conductivity of plastic is poor, the coefficient of thermal expansion, and the modulus of elasticity are low. When the jig or tool is deformed too much, it is easy to cause deformation. When cutting, it is easy to melt due to heat and easy to wear on the tool . Therefore, when machining plastics, the tools used and the corresponding cutting speeds must be adapted to the characteristics of the plastics. Therefore, plastics can also be cut, drilled and welded with lasers.

 

Q: What is CNC plastic?

A: Plastic is a synthetic polymer material. It has many excellent properties such as corrosion resistance, high strength / weight ratio, convenient and fast forming, rich colors and excellent electrical insulation. It has been used in various industrial sectors. The production of plastic parts usually uses a mold forming process. However, small batches of plastic parts still need to be completed by CNC processing, that is, computerized digital control of precision mechanical processing, CNC machining lathes, CNC machining milling machines, CNC machining boring and milling machines, etc.

 

QCan a CNC machine cut plastic?

A1. CNC lathe for plasticIf the surface requirements of the workpiece are particularly high, the cutter head shall be designed as a wide head row. For ends used to cut profiles, design. It is in the shape of rhombic long edge to avoid excessive burr. When processing thin-walled and soft materials, it is best to use a knife head with the same structure as a knife.

2.Drilling Holes for plasticTwist drills can be used, with a helix angle ranging from 12 to 16 degrees. To facilitate chip removal, the helix groove should be smooth. When the diameter of a hole is large, it is necessary to drill it step by step or use a hollow drill or cut it directly. When drilling solid materials, pay special attention to use a sharper drill bit, otherwise the increasing pressure during drilling may cause the parts to crack. Compared with the unreinforced materials, the reinforced plastics have higher internal stress and lower impact strength in the machining process, so they are easier to crack. Therefore, if possible, heat the profile to about 120 ° C before drilling the reinforcement material (heating time is 1 hour for every 10 mm thick part). We recommend heating nylon and polyester only when they are processed.

3.Tapping threads for plastic It is better to use a thread cutter to process threads, and use a double tooth cutter to avoid flash. When tapping, the machining allowance shall be considered (the machining allowance depends on different materials and apertures, and the reference value is 0.1mm).


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