| dc.description.abstract | Injection molding has always been one of the most favorable production methods for product quantification. However, in order to improve the mechanical strength, rigidity, corrosion resistance, wear resistance, etc. of products, and at the same time need to be light in weight, glass fiber reinforced plastics are often used instead. FRP, Fiber-reinforced plastic) to meet the requirements, that is, the material to be tested in this study is nylon + 50% glass fiber (PA66 + 50% GF).
In order to make the glass fiber reinforced plastic meet the dimensional accuracy, geometric tolerance, surface roughness, assembly requirements, etc. after injection, it is generally necessary to use Computer Numerical Control (CNC) for secondary processing to meet the requirements.
However, due to the discontinuity and inhomogeneity of the material itself, the fibers are easily fragmented, etc., the tool will be extremely abrasive during processing, which will increase the tool wear, affect the stability of production quantification, and increase the manufacturing cost. Therefore, Choosing the right tool and coating is a very important issue for the processing plant.
In this study, KYOCERA′s blade and Physical Vapor Deposition (PVD) evaporation method were used to coat four kinds of coatings on the blade, namely: diamond-like carbon (DLC), high-aluminum titanium nitride (AlTiN), nitrided Aluminum-titanium-silicon (AlTiSiN), aluminum-titanium-zirconium-silicon nitride (AlTiZrSiN), and three sets of processing parameters are used to turn PA66+50%GF injection molded products, and record the flank wear to find out the suitable processing PA66 +50% GF tool coating.
The results show that the DLC coating has a long cutting length and cutting time in the three sets of experimental data because of its low friction coefficient and smooth surface. Even if the Vc value is increased, it still maintains a long tool life.
Therefore, if the tool life is From the point of view, DLC coating will be recommended, but the cost of DLC coating is relatively high, and it is necessary to pay attention to whether it can still maintain a competitive advantage in total cost control. | en_US |