Questions tagged [surface-preparation]

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How is EPD different / related to anodising?

What is the process of applying dye to anodized surfaces (specifically aluminum)? Is electrophoretic deposition (EPD) just the process used to apply the dye to anodised surfaces? Or is it a ...
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1answer
39 views

Engineering standards or testing standards for hot punched metal holes for rolled steel

So, I have a problem with fatigue cracking originating from hot punched holes. From failure forensic reviews, it seems like surface conditions contributed to some of the failures, especially where ...
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3answers
243 views

Surface Finish and Strength

Does surface finish affect steels strength properties? If so, how does strength increase or decrease with the type of surface finish applied?
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4answers
1k views

How land is made flat at scale

For building something like a big building or a parking garage, there is a need for a large flat surface of concrete. Wondering how they make the dirt and the concrete flat. It's hard to make a tiny ...
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2answers
59 views

Would it be possible to put an anti-condensation coating on, say, an ice bag such that it will not get wet in use?

I have seen anti-condensation coatings for glass, but as far as I know they're designed to cause any moisture that does form on them to sheet rather than bead. They do not, however, actually prevent ...
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2answers
118 views

In what cases are the roughness values Rt and Ra used?

Roughness measurement instruments output those two values, where Rt is the distance between the top of the highest peak and the bottom of the lowest valley, and Ra is the average distance of every ...
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1answer
35 views

How to avoid oxidation of Si using a sub nanometer layer

Which material can be used to protect a Si layer from Oxidation by a sub nanometer layer?
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1answer
2k views

How to do gold plating on Anodized aluminum and stainless steel?

I have done some research and asked in a few forums for gold plating on anodized aluminum and stainless steel but haven't yet found the answer to my questions. What are the chemicals for pre-...
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1answer
132 views

How can I get a quick 2B shine on grade 316 stainless steel?

I have a stainless steel (316) 2B finish strip. I tried buffing the material for a shiny surface but it takes lot of time to finish my production. So, I want to know if there is any chemical ...
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2answers
831 views

Cleaning anodised aluminium

We have some metal parts in our machines, which are anodised aluminium. Those machines are due to be shipped to the customer in the near future, but I have noticed some pitting or slight rust ...
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2answers
160 views

Buffing/Polishing bulk Aluminum

I'm buffing the years of built up dirt off a aluminum grain tipper trailer, using a woolen buffing pad mounted on a angle grinder. I'm going in a upwards & downwards motion with great success, ...