Tinning belt plates

[2biggij]

I recently purchased some old belt plates that I thought were brass. They were very tarnished so I cleaned them up using a chemical solution, but I was a little too rough with them, and it turns out they were brass plated copper, and now all the brass is gone. I really dont like the look of the copper, so I was thinking about tinning them. I was wondering if someone who has tinned belt plates could explain the process to me. I have looked for some tutorials online, but the only info I can ever find is on tinning copper bowls and pots. 

Thanks for any help!

Joseph Biggie