Use this, shown below ( or similar model paint remover)
I've just stripped the chrome plating from some old model car wheels, and it worked very well.
I posted a thread a few days ago, showing an "in use" review, with some advice and tips, but it seems to have disappeared !
However, here's a brief description.
This particular paint remover is a non-toxic, water based gel, easy and safe to use. The instructions suggest leaving it in place for one hour, then scrape / lift the dissolved paint using a scraper.
However, I found that, if left for an hour, the dissolved paint tends to go rather sticky, making it more difficult to remove easily, although it still comes off., and the plastic beneath
might be slightly affected too. ( If this happens, let it all "set", and then lightly sand back.).
I found it best to treat small areas, and leave it between 15 to 30 minutes before removing the paint / chrome. The stripper can be "agitated" when on the surface, using an old paint brush to wipe over, lifting the dissolving paint, and this will also show how far the stripper has progressed doing its job.
When done, wipe over with a tissue or old rag, and brush off any flakes, then wash under the tap.
If required, the process can be repeated.
The 1/24th scale wheels I stripped had been painted over the chrome plating, around 40 years ago and the enamel paint, and chrome, came off easily.
I'll try to post some pics a little later, to show the wheels before and after stripping.
EDIT;- I found the "in use" review thread - I posted in the wrong section, it's in the "Weathering Questions and Tutorials" threads.