CFM Corporation - Experience & Quality You Can Count On
Quality No-Bake Precision Molds
CFM was one of the first foundries to utilize
chemically bonded, No-Bake sand for both precision molds
and cores. The physical properties of the molding sand
are tested prior to introduction to the molding system.
Our sands must go through a number of tests for grain
size, sheer strength, tensile strength, moisture,
permeability, & scratch test hardness. New silica sand
is introduced in the sand system to keep the molds &
cores at peak performance. All the sand at CFM is sent
through a GK vibramill for lump reduction. Once the
lumps are reduced the sand is filtered with a Kice
Multi-Aspirator to remove any fine sand & other
contaminates to the sand system. Once the sand is
conditioned it is introduced back into the mold & core
lines.
The sand molds are checked for permeability and scratch
hardness, a "Tensile Strength" pull test is conducted to
determine the strength of the sand used to make the
molds. Mold quality is a priority, assuring casting
quality.
All of the molding machines are calibrated at the
beginning of the work day. Daily L.O.I. tests are run on
the sand from these machines to double check the
precision of the molding system.