Share some knowledge of brake pads
1- Why we need know brake pad materials?
Brake pad is the safety component for automobiles. A well knowledge and wise choice for your brake pads will not only a guaranty for road safety, but
also reduce the maintenance costs. But which one will be the right one for mine? Semi-metallic
? Or ceramic pads
? Of course, for a better choose,
engineers will give you some useful suggestions.
2- Does the OEM brake pad are the best?
There are number of brake pads manufacturers
. It is dazzling to make a choice. Generally, we may simply
buy original/genuine (OEM) brake pads, based on a belief that it is the best quality. But we may ignore that original/genuine (OEM) brake pad does not
means the best brake pads. Automotive manufacturers prefer to adopt “capability sufficient” brake pads, to the performance best ones. That’s why
modifying parts so flourish in the markets. In other words, OEM brake pads will competent in normally road conditions, and moderate driving habits.
But they may not efficient enough when facing emergencies, for example, when sudden brakes during traveling on long descent or highways. You may feel
the braking force fading, or even gone; stop distance turning longer; or taking more time to stop, or brake noise, etc.
In the past 20 years, majority of brake pads (including OEM brakes) are consisted of traditional semi-metallic materials & low-metallic materials.
They are low in heat tolerance, corrosion resistant, comfort, another hand, noise in some degree. However, they have been improved or disuse by many
well known brands, like FEROD, LAND FORSCHER
, TRW, TEXTAR, TMD and so on, because In short, the
development of brake friction material is a history of material science and engineering, along with the demanding change of automotive industry.
3- Brake materials history in brief
With the development of automotive industry, and improving of material science, brake pad materials have gained much development according to the
change of car speed and weight of the body. Brake pads have gone through a process of wood material, asbestos material, semi-metallic material,
low-metallic material & ceramic material.
Woody material & Asbestos material have been eliminated, because of low heat tolerance or harmful dust.
The earliest chance that ceramic material be selected was for F1 car racing, because it’s outstanding performance under high strength or extreme
conditions. Generally, F1 divers can only overtake other competitors by delayed emergency braking before entering a curve. In these conditions, cars
will come off the track, if the brakes material has any flaw. It is a violent situation for drivers, also an ordeal for the brake friction material.
Finally, ceramic material stand the racket, gain its status & reputation, rely on the short stop distance, less fading, and minimal wear rate etc.
But for the cost reason, ceramic brake pads
are not well accepted by market for a long time.
However, along of the material tech become maturing, the ceramic brake pads price also getting down. It has been widely use in luxury cars.
4- Does ceramic material made up of ceramic?
There is a common mistaken concept among customers that ceramic brake pads made of ceramic. Actually, ceramic materials for brake pads are a sort of
materials or a concept for formula. Their basic components can be ceramic fibers, steel-free structural materials, mineral fibers, Kevlar fibers,
resin adhesive and copper fibers in small amount, its color appear be lighter than other formulations. The technological core is proportion between
materials, use of modifying components and the treatment technology. All in all, before it called ceramic brake pads, it must pass the following
technical indications: Low dust remains on brake rotors/ wheel Hubs; minimal wear to discs & friction materials itself; friction coefficients stable
enough to stand from 100°C -400°C without obvious fading.
5- Why the markets rely on Ceramic brake pads
A- Low to no metallic fibers, free of noise.
In fair average quality brake pads, metallic is the main functional material, they deliver strong stopping power, however, wear rate are large and not
easy to control the brake noise. LAND FORSCHER’s ceramic materials, 528 DCI
cars & 518DCI for bus/trucks
, are free of metallic fibers; avoid the screaming
produced by brake friction & brake discs.
B- Steady brake friction coefficient
Friction coefficient is the most important performance indicator. A fair quality brake pads material will be easy to be influenced by high temperature
and involve into a friction coefficient to sharp fading process. In practice, stopping power will be reduced, stopping distance will unwelcome be
elongated. However, another condition, they maybe holding an unseasonable high stopping power, generated brake system locked, runaway the path, brake
pads burn up, or other dangers.
LAND FORSCHER’S ceramic materials, 525DC for cars
515DC for bus/trucks
, offer a steady friction coefficient, FF grade (0.44-0.395).
Guaranty the automotive a supper and steady brake performance.
C- LAND FORSCHER ceramic materials
have excellent heat stability, good wearing resistance & low thermal
As LAND FORSCHER’s tests, the mighty brake force will produce as much as 900 °C (even higher) high temperature in the ceramic friction surface,
when stopping a high speed car. And the friction material surface will produce a perfect sintered layer, enhance friction properties and wear life.
D- Less thermal decay & fast recovery
Even the first generation ceramic material 611, 614, or the fourth generation ceramic material 528DCI, 518DCI, 525DC & 515DC, they all performance
supper in even though the brake disc heat constantly at 650 °C. They still firmly out put the wonderful friction coefficient at around 0.45-0.55,
ensuring good stops, protect a safety driving. LAND FORSCHER always making the best brake pads
E- Comfortable pedal feeling
Noise level is an important factor among the comfortable tech indicators. Noise comes from the abnormal attrition between brake pads & discs. People
in the cars, cannot feeling the noise when frequencies lower than 550HZ. Only when frequencies higher than 800HZ, it will be noticed by passengers.
LAND FORSCHER set a higher level in noise indicators to control it lower than 550HZ. You will just enjoy your safety & ultra-quiet
F- Long life-span
Average quality brake pads’ (including some so-called “OEM brakes”) normally last around 20,000KM or less. But ceramic material
525DC for cars
& 515DC for
, will last around 50,000 to 60,000KM. Another hand, LAND FORSCHER adopt a particular antistatic component, the dust will very hard to
adherence to the wheel hub, your brake system will always looks shine and fresh. It is a recessive benefits for you.
The article is original by LAND FORSCHER
research team. April 20 2010
edit on 26-7-2013 by landforscher because: modify some spelling flaws