Robocast LATTICE^TM Filters are engineered structures exhibiting high strengths, reproducible tortuous pathways, thermal shock resistance, and introduce no debris into the filtrate. High surface areas, no line-of-site pathways, and consistent flow improve performance.

MATERIALS
Robocasting's method of manufacturing allows for almost any material to be formed into our lattice structure. Our current experience encompasses over 30 materials ranging from alumina to zirconia.

SHAPES
There are endless possibilities. Multi-sided polygons and circular cross-sections are the most popular. The lattice structure can be incorporated into many geometric shapes with or without walls.

CUSTOMIZATION of Lattice structures includes:

Overall Dimensions (height, length/width, ,taper, diameter, etc)

Gap (or Pore) Between Rods (a small gap is less than 0.1 mm, large gaps are several mm)

Rod Size (small rods less than 0.1 mm, large rods are several mm)

Flow Rates (tuned by altering the rod sizes, gaps, and orientation of rods)

LATTICE^TM filters can be made from many ceramic, metal and polymeric materials.  Three-inch-diameter Silica, Mullite, Zirconia-Toughened Mullite, and Ca-Stabilized-Zirconia, are shown here (clockwise from top left).

LATTICE^TM filters may be able to filter a range of materials (aluminum and carbon steel are shown here).  Thermal mass can be reduced to help prevent freezing.  The superior strengths of LATTICE^TM filters may allow for more-desirable gating configurations.

LATTICE^TM filters have superior strengths and therefore have a high thermal-shock resistance.  After being subjected to this 3600 F (1980 C) torch, some of the rods in this alumina Lattice cracked but structural integrity remained and no debris were produced.

LATTICE^TM filters can be made into many shapes and sizes.  The alumina lattices shown here range from 2 to 8 inches. 

LATTICE^TM filters can also be fabricated as a one-piece tundish nozzle and filter combination (shown on the far left).

LATTICE^TM filters can have varying porosity through the thickness of the Lattice.  The top section of this 1"-thick filter has half the PPI of the middle section, and the bottom section of the filter has twice the PPI of the middle section, giving this filter three graded zones of porosity through the thickness.  This is good for trapping large and small inclusions.

LATTICE^TM filters can be integrated with other part of the casting system.  These Lattices comprise ~0.5 inches of the bottom of this funnel.

Robocasting is always expanding its design boundaries.  Current limitations are ~8 inch LATTICE^TM filters.  However, when inserted into a supporting structure, larger filters can be effectively created by using many smaller filters together.

LATTICE^TM filters can be made into many shapes.  Five and six-sided polygons are shown here.  These smaller lattices can be assembled to approximate a larger circular cross-section.

Laminar flow can be obtained when using LATTICE^TM filters.  Click on image to see how tracer particles emulate fluid flow as the lattice changes the flow from turbulent to laminar.