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MAGNETIC
RUBBER INSPECTION MATERIAL
MagRubber is a highly reliable, non-destructive
inspection technique for detecting cracks and
flaws in ferro-magnetic parts. The MagRubber System
combines the principles of Magnetic Particle Inspection
with a rubber replicating system resulting in
crack indications and other flaws vividly displayed
on a cast impression of the inspected parts.
MagRubber was developed to inspect aircraft
parts for cracks and to extend inspection capabilities
in areas with limited visual or mechanical access
such as bolt-holes, blind holes, thread or gear
root areas, and tubular components. Other useful
applications are, inspection of parts with complex
shapes, coated surfaces, or classifying defects
requiring magnification for interpretation. In
addition to the aerospace industry, MagRubber
is widely used in power plant inspections and
many other applications in general industry.
MagRubber consists of two componets, a
vulcanizing rubber material containing specialized
magnetic particles, and a hardener. MagRubber
cures at room temperature so no special equipment
is needed. To inspect a part such as a threaded
hole in a metal component, the rubber material
is mixed with the hardener, per instructions,
and poured into the hole to be inspected. A magnetic
field is applied which causes the particles to
migrate and concentrate at the flaw area. After
allowing as little as ten minutes to cure, the
rubber replica is removed from the part and examined
for defects. Any defects in the part being inspected
will be displayed as vivid dark lines on the replica
and all other surface defects and conditions will
be accurately reproduced. After examination, the
replica can then be stored and becomes a permanent
record of the inspection.
Advantages of Magnetic
Rubber Inspection Material
• Excellent
Sensitivity: Flaws to 1/2 Micron in Width
• Allows In-Situ Inspections of Portions
of Large Parts in the Field
• Will Inspect Areas Where Visual
Inspection is Impossible
• Replicas Easily Examined at a Time
and Place of Your Choosing
• Works Through Paint or Plating,
on Roughness, and on Parts of Any Shape
• Only Easy Method for Inspecting
Very Small or Threaded Holes Accurately
• Replicas Also Display Machining
Quality, Surface Conditions and Physical Dimensions
• Indisputable Physical Evidence--A
Permanent Record
• Minimal Shrinkage of Replicas
• Fast--Requires as Little as 10 Minutes
to Complete Test
PLEASE SEE SPECIFICATION
TABLES FOR TYPES OF MAGNETIC RUBBER INSPECTION AND SPECIFICATIONS
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