Brake dust
The
brake pad material (semi-metallic, carbon resins, asbestos or ceramics
formulations) rubbing against the rotor disperses tiny particles of black dust,
which forms a cohesive bond to the wheels and adheres to localized paint
surfaces. Brake dust comprises is a combination of ferrous metal particles,
which tends to oxidize and when they come into contact with moisture will form
rust and set-up galvanic corrosion.
Finally there is brake pad adhesive, modern brake pads are complex compounds of
metals, synthetic materials and adhesives (the binder system) which is designed
to wear away under friction like the rest of the pad. The adhesives used in
brake pads can be very difficult to remove and they are also corrosive and will
etch the wheel surface, the metal particles from the pads and rotors will
become a conduit for rust compromising the paint surface of the paint surface.
The adhesives used can be very hard to remove, use a safe solvent like Stoner’s
Tarminator™
Ceramic
brake pads incorporate a formula that includes ceramic materials and utilizes
less metal (approximately 15% metal content by weight). Ceramic brake pads
combine exceptional braking power with very quiet and low-dust braking
Detailer’s
clay will remove most but not all of the iron particulate that is the cause of
the rust "blooming", to for a corrosion decontamination system to be
effective requires the complete removal of all particulates and the corrosive acids they generate that have
penetrated the wheels surface or the
paint's resin system.
Decontamination Treatment- heavy deposits of ferrous oxide will require removal with a
decontamination treatment (C.Quartz IronX)
this will remove the deposits and ensure against rust formation.
Using
detailer’s clay with will remove any surface contaminants after the ferrous
oxide removal process. The front wheels are usually more soiled, as this is
where most of the vehicle braking effectiveness is.
For
badly soiled surfaces use an undiluted citrus-based APC (P21S®
Total Auto Wash), then use detailer’s clay followed by a pH controlled cleaner (Sonax
Extreme Wheel Cleaner) apply a polymer surface protection to ensure easier future
cleaning (Klasse All-In-One)
To
remove brake dust stains use a mildly abrasive cleaner (Zaino
Z-AIO All-In-One or P21S® Multi-Surface Finish)
A warning about acids and HF
Of all the chemicals used in
the detail business, wheel acids are the most dangerous to the wheel, the
employee and the environment. Many contain Hydrofluoric (HF) acid which is extremely
harmful if you get it on your skin, in your eyes or inhale it and is not
recommended.
With any wheel acid, you
should always wear safety equipment. This means glasses and gloves; and the
work should be done in a well-ventilated area.
Non-acid wheel cleaners,
while not as dangerous, have a high pH (12 or 13). They are harmful to your
eyes and will severely dry out your hands if not used with gloves. So do not be
fooled into thinking that they are not dangerous. They will also etch a paint
surface just like an acid
Also, repeated use of wheel
acid can break down in the resin in the clear-coat and cause it to cloud and/or
deteriorate. So use acid only when absolutely necessary.
Zinc Aero Rotors are
available either drilled or slotted, an optional anti-corrosion gold zinc
coating benefits those who live in cold climates, where snow and road salt are
commonly encountered. Zinc coating also benefits Concours d’élégance detailers
who prefer no visible surface rust on the vanes and outer circumference of
rotors Quick Stop Pro
Removing
Rust from Rotors
Hyde’s Rustopper was designed to prevent “rust dust” – the initial brake
dust on clean wheels that occurs after washing. Acid-free, pH-neutral formula
will not attack wheel coatings, lug nuts or braking systems, contains Sodium Nitrite. Avoid contact
with eyes and skin. Use in well ventilated areas. Safe on all types of steel and alloy wheels
(including chrome and polished wheels), anodized finishes and single stage
paints. (Detailers Domain)
1. After cleaning wheel and braking system, rinse
thoroughly with water and let excess water drip for several seconds.
2. From a close distance, apply liberally to brake rotor
surface, spraying in a sweeping motion around the rotor face at least two
times.
3. The liquid may fizz as it reacts with the iron rotor.
Finally, wipe any excess liquid inside wheel.
And remember: Just because
it cleans faster than non-acid does not mean you should always use it.
Safe Degreaser
If you want to safely
degrease your vehicles callipers, Optimum Power Clean is
an excellent choice. It is an environmentally safe product that can also clean
your paint, wheels, tires, engine bay, wheel wells, trim and etc. The strong
cleaning agents break down bug smear, road grime, brake dust, dirt, etc. Optimum
Power Clean is also a great value because you can dilute it 3:1 with distilled
water or use it full strength.
Callipers:
Brake callipers are rough cast
ductile iron on most production cars, so it's not something you can polish to remove any stains, on ultra-high performance cars they are
usually aluminium.
A way to spice up the look and at the same time protects the callipers from corrosion. The Calliper Paint System features aircraft quality paint, available in six different high gloss colours, Red, Yellow, Blue, Silver, Black, & Purple. The paint is heat resistant up to 925 oF; this paint won't start running into your brake pads, it also seals and protects against corrosion.
A way to spice up the look and at the same time protects the callipers from corrosion. The Calliper Paint System features aircraft quality paint, available in six different high gloss colours, Red, Yellow, Blue, Silver, Black, & Purple. The paint is heat resistant up to 925 oF; this paint won't start running into your brake pads, it also seals and protects against corrosion.
Brake dust and dirt will not
adhere to the calliper surface since adding the paint.
The kit includes
everything you'll need to get the job done, besides paint you'll also get
reactor (special bonding agent), high tech calliper cleaner, mixing sticks, and
a brush. Do not attempt to paint the rotor contact surface.
Application- a multi-layer gives the
best results; the first coat thin, second coat medium thickness, allowing
cure/dry time between coats and the final coat will act as filler, providing a
gloss finish. G2-Performance Engineering Inc.
Cleaning- use caution when cleaning as the finish on some callipers use a
powder coating (Brembo, etc.) that can be stained by some wheel cleaners.
Always ensure that the brake callipers are cool to the touch; never use a
cleaner on hot callipers, wheels or brakes. Use a pH balanced cleaner just for
an extra level of safety.
Spray the cool calliper with d-limonene (citrus)
based solvent P21S®
Wheel Cleaner Gel or
P21S® Polishing
Soap, which
contains micro-abrasives, agitate with a soft brush (Swissvax Detail Brush) and then rinse off with
clean water. Wipe surfaces with a soft wash mitt, sponge or micro fibre towel.
Protection - apply
a protection to the face of the calliper using a polymer sealant (the melting
point of most waxes is too low for the heat attained by wheel / calliper
surfaces) similar to that used on your paint (Wheel Wax, Zanio,
Duragloss, Opti-Seal, etc.)
MGP
Calliper Covers -• Enhance your wheel appearance
and protects the wheels from brake dust. Ideal as a semi-permanent installation
(lease vehicles, etc.) Easy installation, less than 10 minutes Construction-
6061-T6 aerospace aluminium, bridge union is TIG welded for strength. CNC
precision engraving for customization, hydraulically formed to fit each
calliper with a patented fastening system, powder coating and custom paint
match
Powder
Coated
This process typically involves temperatures ranging
from 345 -410.OF (175 to 210.OC) for 30 minutes.
Aluminium alloy wheels made of alloy 6061 contain magnesium and silicon to help
improve strength and resistance to hot cracking, and would not be expected to
suffer a significant decrease in its strength following powder coating that
involved temperatures of up to 410.OF degrees for up to 30 minutes.
This type of coating that is applied as a free-flowing,
dry powder. The main difference between a conventional liquid paint and a
powder coating is that the powder coating does not require a solvent to keep
the binder and filler parts in a liquid suspension form. The coating is
typically applied electrostatically and is then cured under heat to allow it
to flow and form a "skin".
The powder may be a thermoplastic or a thermoset
polymer. It is usually used to create a hard finish that is tougher than
conventional paint. Once installed, maintaining the initial appearance of a
powder coating is a simple matter.
Powder coated surfaces are more resistant to chipping,
scratching, fading, and wearing than other finishes. Most dirt and oil will
come off with simple soap and water.
Powder coating provides a robust
finish and polishing can be done with a micro fibre towel and polishing
compound (Menzerna FF 3000 – Final Finish Polish (PO85U)) and a Lake County (LC) White or Black foam pad to restore scratched
surfaces. C heck surface temps as heat will drive scratches deeper into the
finish.
DO NOT attempt to clean hot wheels surfaces; allow
cooling down time, otherwise you may cause structural damage to the wheels and
cause the rotors and/or callipers to warp, making them inoperative. Be
cognizant that if any surfactant, high alkaline or acid based cleaner is
applied, it will cause discoloration to powder coating. Brake cleaner will dry
the seals out; Brembo lost a (US) lawsuit when someone had brake failure
after fitting replacement seals so now they will only sell the complete
calliper.
Other automotive cleaning products also work well. Do not use break cleaners, or other
harsh chemicals. Powder coat is much more resistant to these types of chemicals
but may dull glossy finishes.
The road dirt and grime which builds up on surfaces from
time to time contains moisture and salts which will adversely affect the powder
coating and must be removed
Polishing can be done with a micro fibre towel and
polishing compound (Menzerna PO 85) and a Lake
County (LC) White or Black foam pad to
restore scratched surfaces
Cleaning
- Allow wheel surface to cool down
- Hose off as much initial grime as you can.
- Rinse up into the wheel well to wash away road kill, mud and other debris.
- Use detailing clay and lubrication to remove any embedded contaminants Use a d-limonene (citrus) based cleaner to remove any road tar or oil(P21S® Total Auto Wash) to wheel surfaces and let soak in, agitate with a long-handled boar’s haired brush before rinsing
- Remove bake dust with C.Quartz IronX or Sonax Wheel Cleaner
- Rinse wheel surface and then dry thoroughly
- And then apply a clear WOWO protectant (Zaino Z-CS Clear Seal)
Ceramic Disc Pads
Asbestos pads caused health
issues and organic compounds can’t always meet a wide range of braking
requirements. Unfortunately the steel strands used in semi-metallic pads to
provide strength and conduct heat away from rotors also generate noise and are abrasive
enough to increase rotor wear. Wear also cause ferrous oxide dust that looks
unsightly and is also corrosive. First used as original equipment manufacturer
(OEM) in ’85, friction materials that contain ceramic formulations
· Ensure that the ceramic brake pads and rotors match (a ceramic
system) otherwise you will have problems with stopping when the pads / rotors
are cold or wet, which could warp the rotors and cause bearings to fail due to
overheating.
· Although a ceramic brake disc absorbs heat faster than a steel
brake disc, it is also able to disperse it quickly. A consistently high braking
performance is therefore guaranteed.
· One of the characteristics that make ceramic materials
attractive is the absence of noticeable dust. All brake pads produce dust
(including ceramics) as they wear. The ingredients in ceramic compounds produce
a light coloured dust that is much less noticeable and less likely to stick to
the wheels. Consequently, wheels and tires maintain a cleaner appearance
longer.
· To avoid brake-generated noise and dust brake friction materials
have evolved significantly over the years, going from asbestos to organic to
semi-metallic formulations. Each of these materials has proven to have
advantages and disadvantages regarding environmental friendliness, wear, and
noise and stopping capability.
· Using ceramic compounds and copper fibres in place of the
semi-metallic pad’s steel fibres, allows the ceramic pads to handle high brake
temperatures with less heat fade, provide faster recovery after a stop, and
generate less dust and wear on both the pads and rotors.
· From a comfort standpoint, ceramic compounds provide much
quieter braking because the ceramic compound helps dampen noise by generating a
frequency beyond the human hearing range. Another characteristic that makes
ceramic materials attractive is the absence of noticeable dust. All brake pads
produce dust as they wear. The ingredients in ceramic compounds produce a light
coloured dust that is much less noticeable; consequently, wheels and tires
maintain a cleaner appearance longer.
· Ceramic pads meet or exceed all OEM standards for durability,
stopping distance and noise. According to durability tests, ceramic compounds
extend brake life compared to most other semi-metallic and organic materials
and outlast other premium pad materials by a significant margin; with no
sacrifice in noise control, pad life or braking performance. What is important
though is that car's rotors are designed for ceramic pads; otherwise the rotors
will typically wear faster. (Check with
the vehicle manufacturer)
· Ceramic rotors will absorb
any material that comes in contact with them. On vehicles that are equipped
with ceramic braking components; car-wash shampoo and water or P21S Wheel Cleaners
will not cause damage, or create unsafe conditions, and /or void their
warranties. Avoid using any products that contain silicone as it can permeate
the carbon-ceramic material and negatively affect the friction and thereby the braking
efficiency.
Cleaning
Any diluted car wash
concentrate, d-limonene (citrus) based cleaner (P21S® High Performance Total Auto
Wash) or pH neutral cleaner (P21S Wheel Cleaner)
should be fine to use on ceramic brakes as they produce very little brake dust
(being non-metallic) they just attract the normal amount of road dust, dirt and
grime
Always be
willing to learn; because the more you learn, the more you’ll realize what you
don’t know. It is said
that knowledge is power, with the caveat that it includes access to a reliable
information sources. I would like to think that these
articles become an asset to anyone who is new to detailing and to
professional’s alike, as well as industry experts who seek to advance their
knowledge.
I hope these articles are informative. They are
based on the current status of technical development as well as my experience
with the products.
By having some
understanding of the ‘What’ and ‘Why’ as well as the ‘How’ along with a little
science to help you understand how the chemicals we use react, you can achieve
the results you desire.
I would appreciate it if you
would share these articles as it helps other detailers further their knowledge.
As always if you have questions,
I’ll do my best to answer; bear in mind the only stupid questions is the one
that was unasked. Questions and/ or constructive comments are always
appreciated
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© 2002 - 2015 TOGWT® (Established 1980) all rights reserved
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