外文翻译-表面处理如何延长模具运行周期.doc
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How Surface Treatments Keep Molds Operating
Longer
Important tips and information about mold coatings to help you achieve the level of
production that you and your customers desire.
By Steven . Bales Mold making technology January 2006
Abstract
There’s an awful lot to know these days about molding plastic and how to get the very best performance
from the valuable tools you build or run. This guide has been written to provide important tips and
information about mold coatings. After reading this, you should have a very good idea of what
coatings—from the very traditional to the very latest—will help you to achieve the level of production you
and your customers desire. After all, these tools are an investment and they need to be protected for the life
of the products they mold.
Key Words
mold coatings preventive maintenance (PM) program benefit nickel Cobalt diamond-chrome
nickel-PTFE nickel-boron nitride electroless nickel texture
The Key Role of Coatings
Before introducing you to the wide range of coatings on the market today, it’s important to note the role
coatings can play in an effective preventive maintenance (PM) program.
PM is really the key to protecting your tooling, your investment. Why? Because it saves time and money.
Once you invest in a mold coating to improve tool performance, then a PM program is always a good idea to
ensure you get the maximum benefit. These two steps should be a given in any shop.
Remember, no coating lasts forever, and producing substandard parts from a mold with a worn coating is no
way to win customers and stay profitable. PM is probably the most cost-effective strategy you can put in
place. The key is to educate your personnel on how mold coatings wear during production. Every coating is
different, so it’s of benefit to have employees learn how to tell when the coating is showing deterioration,
especially in high-wear areas such as gates and runners.
For example, wear in and around gate areas plated with hard chrome is the first sign that your mold needs
servicing. How can you tell there is wear? The chrome coating is approximately 20 RC points harder than the
base steel, so exposed steel will wear much faster than the coated surfaces surrounding it, causing a slight
or pronounced edge or “step” on the surface.
Conversely, nickel will wear almost evenly, causing a kind of feathering effect, making it more difficult to
recognize wear. A more identifiable difference will be the color because when nickel coating wears, it
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