I’m asking forum experts: what can be used to corrode iron quickly?
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The spring in the table tennis serving machine is broken, and I want to replace it. I’ve already bought a new one ready for installation. Here are the problems: 1. The original spring seems to be stuck inside the metal tube; it can’t be removed – pulling on it causes it to break. 2. The hex screws in the base are likely severely rusted, which resulted in two wrenches breaking. I want to use a chemical solution poured into the screw holes, so that it can seep into the gaps between the threads and cause corrosion; this should make it possible to twist the screws out. The same approach is intended for removing the springs. The screws and base are likely made of cast iron, while the springs are made of stainless steel, which is an iron alloy. I’ve tried oxalic acid, but it wasn’t effective in loosening the springs or screws. I’m seeking advice from chemistry experts: what chemical solution can be used to cause rapid rusting of iron? It’s best if it’s easy to obtain, and it should be able to corrode stainless steel and iron at room temperature, as it’s not convenient to heat this large metal object. Can FeCl3 solution be used? Is hydrogen peroxide + hydrochloric acid effective? Do we have to use aqua regia?
There is a challenge associated with using corrosion as a method: if the main material is metal, it can be easily corroded. In the case of plastic parts, corrosion can be considered as a solution. For removing bolts with reverse threads, there is a method that can be used – namely, drilling them with a drill; this might help to open them.
Does that mean that both plastic and metal can be treated using corrosion? Mine is made of metal
Dear chemical experts, you are all researching how metals can resist corrosion. But we can think in reverse: I need a chemical solution that can cause severe corrosion of iron – which one should I use?
For metals, corrosion cannot be used; you can try drilling a hex socket with a drill bit.
Why is it so troublesome? Just buy a replacement part from Taobao and install it, isn’t that enough? Using it poses a high risk of corrosion.
Ordinary hydrochloric acid or ferric chloride are readily available, and they also cause corrosion at a faster rate. Another option is a rust remover/loosener, which works as well, but it’s more expensive.
You can try a loosening agent; it’s quite cheap, costing just a few dollars per bottle. It’s often used in factories to remove rust from screws during repairs, and it’s effective. :)
What was said on the 2nd floor makes sense – just use a drill to drill it out.