Quote:
If you are looking for more details, kindly visit China Custom Coil Springs For Automotive Distributor.
Using the great info from this forum I made an electric de-rustifier from a 50 gallon plastic drum and used it on my coil springs. Now that they are clean, what can I put on them or do to them to keep them that way?
Will paint stay on them or will it crack when the load is put on? How about powder coating? Is there something else?
Thanks,
Jamie B
Can you point me to this de-rustifier information?
Jamie B Wrote:Can you point me to this de-rustifier information?
Did you know that most springs require plating or finishing
for both cosmetic reasons and to prevent rusting? Today, we have endless
choices when it comes to spring surface treatment, but only a few of them are common.
On the other hand, most mechanical springs are
still manufactured using spring steel due to its low cost. This is the primary
reason why you will need some coating/finishing to be applied in the spring to
provide some degree or corrosion protection.
Although this may take up the overall cost of the spring, it
is much better than working with uncoated spring. Here are some of the common
finishing and coating options in mechanical springs.
Organic Zinc Flake Coatings
Zinc flake coatings provide excellent corrosion resistance
with zero risks of hydrogen embrittlement. The organic zinc flakes mainly
consist of flakes of zinc in a unique suspension of resin that can be applied
to the spring by spraying, dipping, or spinning.
For more information, please visit Auto coil spring material types.
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Most custom
spring manufacturers recommend using this finish where the consequences of
spring failure may be severe. However, it is good to note that the cost of
organic zinc coatings is a little higher compared to the price of other coating
methods.
Electroplating
This is one of the most common types of spring coating used
in precision spring design. The two most notable benefits of electroplating are
low cost and effectiveness.
During electroplating, a lot of hydrogen is formed, and some
of it may get absorbed into the steel surface. The absorbed hydrogen will soon
render the steel fragile and subject to failure. To avoid this problem, the
spring must be heat immediately after electroplating at approximately 200
degrees for up to eight hours to get rid of as much hydrogen as possible.
Other elements that can be applied to steel springs by
electroplating include gold, silver, tin, and nickel. Tin and nickel are mostly
used in situations where good electrical conductivity is necessary.
Powder Coating
If you are looking for good finishes for larger springs, invest
in powder coating. You can achieve a wide range of colors for decorative
purposes, corrosion resistance, or for unique identification. The paint adheres
quite lightly to the spring.
However, powder coating isn’t always ideal for smaller
springs since the thickness can be substantial. The cost of powder coating can
also be a significant disadvantage since the price of a powder coated spring is
much higher than that of an uncoated spring.
Pre-Plated Wire
Mechanical springs can also be coated using a pre-plated
wire. This can be achieved by drawing the spring wire through molten metal
which also lowers the risk of hydrogen gas embrittlement. Zinc is used as the
primary coating material and wires treated in this manner are usually referred
to as “galvanized” wires.
The primary advantage of using a pre-plated wire is that it
is a low-cost method of coating springs and ensures full coverage of the wire
surface. Even the closed ends of the spring are treated. However, you need to
keep in mind that the cut ends of the sire aren’t coated, but it isn’t a big
issue.
The less common coatings include manganese
phosphate, colored dye, black oxide, and many others. Make sure that you consult with experts at The
Yost Superior Co. to determine the right coating for your springs.
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