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Laser Alloying
( Aluminum Brake Disc )
After studying for a few of years, Yiu Hwa Technology
Co. has been succeeding the laser alloying in Aluminum
alloy products, like aluminum alloy brake disks and
aluminum alloy pistons. Laser alloying is a process
of melting additive material, such as Nickel, Chrome
alloy or metal matrix of ceramic powder, and substrate
aluminum metal or other metal by high power-density
laser beam. Laser beam exits high energy and low heat
effected characteristic, and it progresses the surface
modification very well for modifying the wearing, bearing,
corrosion and temperature properties of aluminum alloy
or other metals.
Aluminum alloy disks with laser alloying in bicycle
or machinery have more resistance in wearing property
especially in higher temperature environment than the
one without alloying. Comparing with stainless disk,
there exists similar wearing property but the aluminum
disk has lower or only one third of temperature than
on the surface of stainless disk during working. Beside
temperature rising, stainless also exits three times
of in density when comparing with aluminum. Considering
the strength and stiffness of a disk, aluminum alloy
has similar serving life with stainless, but the weight
is only one half in aluminum alloy, and the temperature
is around one third in laser alloying disk, such as
450 ＄ in stainless and 150＄ degree during the serious
serving. Thus, the hydraulic breaking system will be
avoiding damage during the service period when the alloying
aluminum alloy disk is used.
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