![]() If you wish to discuss this further, I will be happy to give you pros and cons. I have found that copper corrodes in a sulphuric acid atmosphere. I recommend lead cathodes connected to aluminum buswork. I have 30 years of experience running anodizing lines. Hope this answers some of your questions. ![]() Keep the copper below the top of the tank to minimize the possibility of copper dissolution into the anodize tank. I would suggest that you bring the aluminum cathodes out of the tank and connect to either flexible copper cable or aluminum bus conductor (if the distance from the tank to the rectifier is not too far). ![]() Depending upon the total amperage being used, this could add up to considerable energy savings. In many instances, a 2-3 volt saving is noted when aluminum is used. 4.5%, therefore, much of the energy from the power supply is utilized overcoming the high resistance of lead or SS, whereas the aluminum conducts the energy to the anode (parts) for better anodizing response. Lead cathodes or SS cathodes are not as good conductors as aluminum (Al = approx. All welds should be made with 5356 alloy welding rod, not 4043, which is a common welding material.Īnode:cathode ratio should be approx. Alloy 6101, NOT 6061, is a substitute! Do not use the overaged 6063 T52 temper as it will dissolve rapidly. As stated above, 6063 T6 or T5 is the recommended alloy for aluminum cathodes. 1981 issue of Plating & Surface Finishing.Ī. Charlie Grubbs' article on aluminum cathodes can be found in the Nov. Does anyone have experience with this matter? Any other information (recommended alloy of aluminum, proper anode to cathode ratio, recommended way to connect to copper bussing, etc.) would be greatly appreciated. A more even coating thickness across the workbar and elimination of lead from the waste stream are also given as benefits. The case for aluminum cathodes is that less current and less cooling is required do to the greater current carrying capacity of aluminum vs. We currently use lead cathodes, but are considering switching to aluminum, based on supplier recommendations. I am looking for advice on using aluminum vs. ↓ Closely related postings, oldest first ↓ But my understanding, as a non-metallurgist, is that 6063 IS a precipitation hardening alloy. Sorry, I'm not sure if that is a refutation of the claims on this page or just a question. Clock Selection Fuse Bits Configuration 5.A. Video Tutorial – Part1 Tips and Tricks 1. Creator(s) of this blog, or this blog, will not be responsible for your decisions, choices, actions, or inactions based on these materials.Įmbedded Electronics Blog © 2023 Home » Atmel AVR AVR Tutorials 1. This blog is created with a spirit of helping fellow human beings by sharing knowledge and experience. Please read license deed here and legal code here. In simple words you are free to remix, tweak, and build upon this work, use images and photographs published here as stock images for your blog or websites, even for commercial purposes, as long as you mention credits (by providing a link) to this page or site, clearly and unambiguously, in your work and license your new creations under the identical terms. All the content (articles, and images) on this Blog are licensed under Creative Commons Attribution-ShareAlike License (Unless otherwise specified).…and this will be True for almost all LEDs that you purchase from general retail electronic shops. That’s the cathode !!!! and other one is anode. You will find, on one side, this ring is flat.Look at the border ring which is slightly projected out.Take LED in your hand and look carefully at the place where leads go into LED.What if you feel (like me □ ) this method is also too boring and time consuming … If you get some reading on DMM, then lead connected to COM is cathode and other one is anode.Connect one lead of LED to COM probe of DMM and another to RED probe.Take multimeter and keep it on Diode testing mode.What if you don’t have breadboard or you are too lazy (like me □ ) to do this testing … If LED glows, lead connected to VCC is anode and other one is cathode. Take one resistor between any value between 100Ohm to 500Ohm and connect it in series with the LED on bread board.What if you have cut the two leads to same length ? read on … When you purchase an LED … longer leg is anode while shorter leg is cathode. How you can determine anode and cathode of LED?
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