I think this could be done as a resource request under existing tags, as you are in essence looking for a resource.
I think there is an argument for making these type of question (technical translation requests) an explicit category (tag) of their own with the proviso that such questions are for translations of small parts - not long documents.
I think we've all found old papers we would like to read or examine but which are in languages (and old versions of languages at that) which we do not have the knowledge to translate. As they are technical documents these require specialist knowledge to properly translate. I think it's not unreasonable to ask for help from Physics SE and for Physics SE to supply it when someone can.
It seems pointless having a global membership on Physics SE and not accepting that as an asset.