Rolled Linings - Mineral Fibers, Brown Color | Excellent Heat Stability, Dependable Friction Coefficient, Long Service Life

Rolled Linings

Brake linings are a combination of Friction Material. Prior to the
mid-1970s, the most common friction materials in use for normal duty
were termed Organics. These friction materials usually contained about
30 - 40 % wt of organic components and were asbestos base. After
mid-1970s, the introduction of front wheel drive vehicles brought about
the widespread usage of a new class of friction materials called
semimetallics, also called semi Mets and carbon- metallic. Because of
the allegedly adverse health effects associated with asbestos fibers, a
second new class of friction materials called Non Asbestos Organics (
NAOs) came out. In the case of automotive friction materials, the
Coeff.of friction is usually found to decrease with increasing unit
pressure and sliding speed at a given temperature. For a Fixed amount of
braking the amount of wear of automotive friction material tends to
remain fairly constant or increase slightly with respect to brake
temperature, but once the temperature reaches >200^oC , the wear
increases exponentially with increasing temperature because of thermal
degradation of organic components and other chemical changes.

At MK in Brake linings Glass fibers, ceramic fibers,
acrylic fibers and cellulose fibers are being used in replacement of
asbestos as they are more thermally resistant than asbestos.

The methods for producing most friction materials are
concerned with the placement of the reinforcement strand or wire within
the matrix using some sort of winding operation. Cermet materials are
manufactured using the powder metallurgy technique.

The manufactured friction materials are characterized by
various chemical, physical and mechanical tests in addition to friction
and wear testings.The properties like Hardness, sp. Gravity, strength
etc. are measured. The much attention has been placed on Noise vibration
Characteristics. The friction materials are evaluated in the laboratory
for a variety of tests, the full brake Dynamometer reflects the actual
performance of the friction material. Numerous test procedures are
followed for the same.

At MK Group in Four wheeler Brake Liners structural
integrity of friction material is attended through a blend of mineral
fibers, acrylic and glass fibers. This material is ideally suited for
brake system in commercial vehicles. This material has excellent heat
stability and is gentle on mating surface. It is consistent in
performance at variable temperatures having dependable Coeff. Of
friction. It has smoother braking and long service life. The testing is
carried out in our labs and also on roads on fully instrumented
vehicles.