| Reverse Machining is a trade mark of
W R Associates Inc.
This newsletter can be found on the following web
sites:
www.ldcbrushplate.com
www.wrainc.com
If you have any questions or comments E-mail us at:
coatings@wrainc.com
or
ldc@bblink.net
We look forward to hearing from you. And working with you
Thanks,
Bill Wachtler
SKIN COVER
First, we would like to introduce a new product for your
people. It is a LIQUID GLOVE. A lotion applied as you would a hand cream; HOWEVER, it
provides significant benefits to the user. It acts as a barrier to chemicals as well as
VIRUSES such as ANTHRAX. It evaporates over a 4 hour period but does not come off with
soap and water. It provides protection from solvents, chemicals both water and petroleum
based. It may provide some peace of mind for you and your employees as well as act as an
invisible glove for those doing brush plating and working with various chemicals.
More info at WRAINC.com.
REVERSE MACHINING:
In order to best understand the capabilities of your
Brush Plating system see if you can consider it Reverse Machining.
We all understand machining as a controlled, precision method of metal
removal.
Brush plating, however, is generally thought of as a 'coating process',
and, in fact it is. But of the coating processes brush plating is the only one that, in
fact, can be considered as a "Reverse Machining" process. Brush Plating is the
only metal adding or coating process that can precisely add metal at the tolerances of and
with the precision of machining. If you look at brush plating as a form of Reverse
Machining the applications of the process for reducing the cost of product in production
can be as much as 10% depending on the tightness of the tolerance of the finished part.
How can there be a cost reduction by adding a process to the
manufacturing sequence? An example based on an actual program: The manufacturer wanted to
reduce the tolerance on a bearing journal by half. At that time he was experiencing a 6%
rejection rate. A rule of thumb is, if you half a tolerance you can expect a doubling of
production cost. To avoid this what we did is open the tolerance of the initial grind,
measure the parts produced, take the rejects and bring them back to size using brush
plating. The tolerance was halved and the cost reduced at the same time.
More info at LDC or WRA
ADDITIONAL USES FOR YOUR BRUSH PLATING
CAPABILITY:
Generally a brush plating system is obtained to provide
a solution to a requirement or problem a company has. The system performs the function it
was purchased for and is used in that application.
The problem is that the process is multi-functional. In most cases it
is used for either a coating process or possibly as a REVERSE MACHINING application- What
we are presenting here are additional ways the brush plating equipment can be possibly
useful to your company. We will cover both application areas as well as functions.
FILLING SCORES AND PITS:
The process can be used to fill scores or dents in
surfaces. Its high speed of deposit, .001" of hard material or .010" of copper
per minute allow for repairs on scored hydraulic pistons, scored pump housing faces and
scored impellers. It requires the development of operator technique but there are
certified shops that can provide this service.
BLACK DEPOSITS:
Brush Plating equipment can also be used to provide:
Back Nickel LDC 2809
Black Chromium LDC 2409
Immersion Black LDC 60E
While all of the black coatings perform their function and the
information for their use can be gotten from the Solution data sheets the Black Chromium
is probably the most useful of the three. It's applications are coating:
Solar Energy Collectors
Heat Production Exchangers
Anti Glare Surfaces
Low Reflectivity Applications
Decorative Applications
The Black Chromium Deposits have excellent durability, resistance to
wear and can operate at high temperatures. Its properties are similar to regular chrome
deposits with one major difference other then the color. It has a higher degree of
micro-porosity which absorbs lubricants and paints better. Improved wear and corrosion
resistance and appearance result.
ELECTRO POLISHING:
The next area the equipment has unique applications in
is electropolishing. The solution used is LDC 1620. It allows for the cleaning up of
stains and discoloration from such things as over temperature on stainless steels or
chrome. It also is used to clean up weld heat marks. The brush plating equipment is run in
reverse and is effective when used as indicated on the solution data sheet.
ANODIZING:
Another use of the brush plating equipment you have is
the anodizing of aluminum.
There are four types of anodizing solutions available from LDC.
Chromic LDC 2410
Sulfuric LDC 1610
Hard LDC 1612
Anodize HC LDC 1615
The primary use of the brush anodizing is for the touch up of damaged
anodize or incomplete or possibly small areas that would be better serviced if the masking
could be minimized or the part were too large to be easily immersed. It can be colored
also but the tone of the coloring may vary slightly because of the different grain
structure of the anodize.
CHROMATE:
There are two separate conversion
coatings available from LDC.
Dichromate LDC 1720
Cad Coat LDC 1721
The Dichromate can be used on Zinc and Cadmium.
The Cad Coat is a single step conversion coating for Cad. It is unique
in two ways. It is diluted significantly for use and can be made to match the color
requirements of your customer.
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