The manufacturing precision of dental machinery molds is very high because of the small size of dental machinery components and tight tolerances. For example, some small connecting accessories in dental implant tools, the size deviation of the mold cavity must be controlled at the micron level to ensure the dimensional accuracy of the finished injection parts and ensure the precise fit with other parts.
The fine control of temperature, pressure, speed and other parameters in the injection molding process is very important. Taking the production of dental orthodontic brackets as an example, different materials need to adapt to different process parameters. If the temperature is too high, the material degradation may affect the performance, and if the temperature is too low, it can not be fully fused and formed. Too much pressure may cause parts to flash, deformation, pressure is too small and there will be a lack of material phenomenon. By optimizing the process parameters, the internal structure of injection parts is compact and the appearance is smooth, which can meet the high performance requirements of dental machinery.
Quality inspection and control:
There are strict requirements for the appearance quality of the injection molding workpiece, and there should be no bubbles, flow marks, scratches and other defects on the surface, because these defects not only affect the appearance, but also may contain dirt and increase the risk of cross infection. Multiple rounds of screening are performed through eye inspection, optical detection equipment, etc.
Dimensional accuracy testing uses high-precision measuring tools, such as coordinate measuring instruments, to accurately measure key dimensions to ensure that they are consistent with the design drawings, and any product outside the tolerance range will be judged unqualified.
Performance test, simulate the actual dental operating environment, fatigue test, wear test, chemical stability test and so on. For example, repeated impact tests are carried out on the dental mobile phone shell to simulate the collision situation in daily use and test its durability; A chemical tolerance test is performed on the dental mold tray to verify that it can withstand the erosion of impression materials and disinfection agents. Only through layers of quality control, injection molding parts can be applied to dental machinery for oral medical services.
