Plastic Pyramid Media (Pyramid Shape)
We can also make other size plastic abrasive media that not show in the table, so please contact us to get detail information
1. Why pyramid shape plastic finishing media
Pyramid shape plastic media generally is small size plastic media. Therefore, engineer use it in small and delicate components smoothing and deburring. An example is jewelry accessories and watch components finishing after casting and machining.
The jewelry parts are small size components. And they have special surface contour and geometry. Those surface need polish at same surface roughness.
2. Plastic finishing media general information
2.1 Plastic finishing media composition:
Plastic tumbling media is preformed plastics, the other workhorse media, are also available in a variety of grades or bodies, with some manufacturers having nine grades while others have as few as three.
We make plastic media mixing bonding abrasives (generally 40-70% by weight) into polyester, usually by casting. After casting, manufacturer pre-tumble the media to remove flash. Because the plastic media is softer, has a lower density than preformed ceramic media, provides a cushioning effect, and sometimes has a shorter life.
2.2 Plastic Finishing Media Advantage
Three areas exist in which plastic is really better than ceramic:
- Large size abrasive media is important to prevent lodge in, however, ceramic media may risk to scratch parts;
- Plastic finishing media prevent delicate parts damaging ;
- Plastic finishing media create a smooth surface for pre-plating or pre-anodizing finish
It is well suitable for finishing softer metals and fragile parts, achieving pre-plating requirements, and producing smooth finishes as low as 5 micrometers. During finishing the matrix which is softer than the abrasive, is eroded, leaving the abrasive to perform the desired work.
While some users believe it assures parts free of impingement, this is not true, All the mass finishing processes expert for fixed or compartmentalized operations allow part-on-part contact. We can make plastic media in various shape according to parts requirement. In practice over a decade some shapes go out of favor and new ones emerge.
Inovatec noted that the pyramid tumbling media provides no surface hardening of the parts. In addition, plastic media is also quieter than abrasive chips.