Centrifugal disc finishing utilizes various compounds alongside abrasive media to enhance the finishing process and achieve specific results. Here’s a breakdown of the main types and their functions:

1. Polishing Compounds:

  • Emery-based: A traditional option for achieving a good satin finish on various materials like metals and plastics. Available in different grit sizes for coarse to fine polishing.
  • Diamond-based: Offer superior cutting capability and high-gloss finishes on metals, ceramics, and some plastics. Ideal for precise polishing and delicate parts.
  • Alox (aluminum oxide) based: Versatile compounds for polishing metals, glass, and ceramics. Provide a good balance between cutting efficiency and final finish.
  • Cerium Oxide-based: Primarily used for polishing glass, ceramics, and acrylics to achieve a high mirror finish. Gentle on softer materials and minimizes scratching.

2. Burnishing Compounds:

  • Water-based: Environmentally friendly options for burnishing and achieving a high luster on materials like stainless steel, copper, and brass. Can contain additives for additional corrosion resistance.
  • Solvent-based: Offer faster drying times and higher gloss potential compared to water-based options. However, they generally have higher VOCs and require proper ventilation.
  • Wax-based: Suitable for burnishing softer materials like aluminum and plastics. Provide a protective layer and enhance surface smoothness.

3. Other Compound Types:

  • Cleaning compounds: Formulated to remove surface contaminants like oils, oxides, and light tarnish. Often water-based for ease of use and disposal.
  • Lubricating compounds: Reduce friction and prevent media clogging during the finishing process. Can be added to improve overall efficiency and media lifespan.
  • Specialty compounds: Certain manufacturers offer compounds with specific functionalities, such as antimicrobial properties for medical applications or anti-tarnish formulations for jewelry finishing.

Choosing the Right Compound:

  • Consider the desired finish: Polishing compounds for high gloss, burnishing compounds for luster, and cleaning compounds for removing contaminants.
  • Material of your parts: Choose compounds compatible with your parts’ material to avoid unwanted reactions or damage.
  • Media type: Some compounds work better with specific media types for optimal performance.
  • Environmental considerations: Opt for water-based or low-VOC options whenever possible for a more sustainable approach.