Soldering Shields
|

Click on above to see full size photo |
The ISA shield is on the
right. The leading selling brand's shield is on the left.
Standard ISA shields are
11.5" x 11.5" with a grommet in each corner. ISA performed a flame
test to determine the effect of an open flame on both shields.
|
|
Each test was 60 seconds
exposure to the open flame.
|

Click on above to see full size photo |
|

Click on above to see full size photo |
For the first test, the flame was 5" from the shields. After 60
seconds, there was very little change to either shield.
|
|
For the second test, the
flame was 4" from the shields. After 60 seconds, each shield
changed color but stayed flexible.
|

Click on above to see full size photo |
|

Click on above to see full size photo |
For the third test, the flame was 3" from the shields. After 60
seconds, the shields showed definite differences in color and
flexibility. ISA's shield was discolored but retained its original
flexibility. The leading brand's shield was discolored and turned
brittle.
|
|
For the fourth test, the
flame was 1" from the shields. After 60 seconds, ISA's shield was
discolored in a large spot but remained flexible.
|

Click on above to see full size photo |
|

Click on above to see full size photo |
The leading brand's shield had a quarter size burn hole.
|
|
A test at 3" was performed
on the edge of each shield to determine how the stitched edge would
withstand the flame.
|

Click on above to see full size photo |
|

Click on above to see full size photo |
After 30 seconds, both shields discolored. After 60 seconds, ISA's
shield was still flexible and the stitching stayed intact. The
leading shield turned very brittle and the stitching melted.
|
|
This photo shows a close-up
of the stitching of both shields after the edge test was completed.
|

Click on above to see full size photo |
|

Click on above to see full size photo |
This photo shows the overall results after all testing were completed.
|
|
Another photo of both shields after all tests were completed.
|

Click on above to see full size photo |
|
|
 |
MAPP gas is a combination of
liquefied petroleum and Methylacetylene-Propadiene. It is a
stable, high-energy fuel with excellent performance for glass bead
making, brazing, soldering, flame-hardening, and many other
applications.
The MAPP gas flame produces
2,405 BTU/cubic foot with a 5301°F (2927°C) flame
temperature, which is much better heating than a propane-only torch.
However, MAPP gas does not have the flexibility with oxidation and
reduction flame control which you have with an oxygen & propane torch.
|
Many materials to choose from
Why spend extra for a shield that withstands a temperature of 2,300°F
when you only need one to handle 1,500°F? When you order from ISA
you no longer need to.
|