A-Z Tube Dusseldorf 2018 Previews
CONDAT - Booth 5 C10
Compliant Lubes for Copper Tubes
Leader in the mechanical wire drawing market,
Condat has earned an international reputation
for supplying lubricants with added value to the
industry. For the tube industry, CONDAT has
recently developed drawing lubricants dedicated
to copper tubes used in air conditioning and
refrigeration service. New products to be discovered
on Tube Düsseldorf.
Refrigeration tubes imply strong lubrication
requirements
Copper tubes for air conditioning and refrigeration
service must usually comply with various standards
such as ASTM B280, EN 12735 and NBR 14665.
In order to draw the tubes, an oil based product is
often used for the lubrication between the tube
and internal mandrel or plug. According to the
fore-mentioned standards, the lubricant residues
14 TUBE NEWS
April 2018
must be very low. Additionally, some systems’
manufacturers request the residues to be compatible
with refrigeration gas such as R134-a.
Reducing the drawing residues often means
drawing with a thinner lubricant layer between the
tube surface and the tooling. A high-performance
lubricant is therefore required to avoid contact
between the surfaces even at high speed. The various
drawing steps impose a large range of viscosities to
cover the different dimensions, deformation ratios
and speeds.
Compatibility of the lubricant residues with R134-a
gas leads to high technological constraints for which
a reliable knowledge and control of the product’s raw
materials (oil, ester, additives…) is required.