Plastic Abrasive Media (Parabolod 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 paraboloid shape plastic abrasive media
1.1 Prevent Lodging
Paraboloid shaped media is popular in various parts deburring and smoothing. However, this is a special media shape design for specific application. Because it allows partially to enter holes of various diameters without lodging problems. An example is stainless steel gear components with gear teeth and flanks.
1.2 More contact area compare with cone shape
The photo above gear components that need to improve surface Ra value. So friction force during transmission can be lower. Energy consumption can be save as well.
To reach all contact surface, a ceramic media with paraboloid shape can fit better into gear tooth flanks. As a result, it almost leave no gap and unpolished area.
2. Plastic abrasive media general information
2.1 Plastic Abrasive 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 Abrasive 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 abrasive media prevent delicate parts damaging ;
- Plastic abrasive 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 plastic tumbling media provides no surface hardening of the parts. In addition, plastic media is also quieter than abrasive chips.