Rigid Glasweve Filters for Sand and Permanent Mould Casting

Overview

Pyrotek's Rigid Glasweve™ (RGW) filter is a shaped, rigidized filter made from woven fibreglass that is used in permanent mould and sand casting applications to capture impurities in molten metal, regulate metal flow rates, and prevent metal bypass. RGW filters have successfully replaced traditional ceramic foam filters (CFF) with performance benefits and without process changes or modifications to existing filter pockets.

Aluminium foundries that cast aerospace, automotive, and other commercial parts see process benefits when using RGW filters. Benefits include more consistent pouring times, easier recycling of gating, reduced abrasion on moulds and mould coatings, and improved fit with the filter pocket to prevent metal bypass. Rigid Glasweve filters are less dense than aluminium, so they float to the top of the melt and are removed during regular fluxing and dross removal. After a casting has solidified, RGW filters are remelted with the gating. Compared to CFFs, Rigid Glasweve filters provide foundries with a more cost-effective solution with no distinguishable difference in casting quality.

Pyrotek Offerings

Pyrotek Rigid Glasweve filters are manufactured with tight dimensional tolerances—within 0.5 millimetres—and are available in a variety of shapes, sizes, and materials to fit filter pocket dimensions and match flow rates of 10, 15, 20, and 30 pore-per-inch (ppi) CFF filters. Since the material, shape, and weave style filter can affect the flow rate, Rigid Glasweve filters can be designed to replicate the existing filter and flow rate so as to not affect the casting process.

 

Rigid Glasweve Filters for Sand and Permanent Mould Casting
Rigid Glasweve Filters for Sand and Permanent Mould Casting
  • Equivalent or better casting quality as CFF
  • Tight dimensional control in manufacturing Rigid Glasweve filters reduces or completely prevents metal bypass
  • Increased savings and process efficiency by remelting gating
  • More consistent pour times and improved pouring consistency with Pyrotek AutoPour ladles and robotic pouring systems
  • Reduced wear on mould and mould coatings

Gallery

Rigid Glasweve Square Box 2 Rigid Glasweve Square Sombrero 2 Rigid Glasweve Square Box Square Sombrero 2 Rigid Glasweve Square Box Square Sombrero Rigid Glasweve Mould Filters 3 Rigid Glasweve Mould Filters