what type of oven heats metal (solder) more than (cured) polymyers?

Hi All,

I'm working with some silicon chips and I'm looking for a type of oven that can heat up the solder finish rather quickly (in seconds would be great) but not so much for the body of the chips.

I was thinking that an IR furnace will probably do it but someone said it could do just the opposite.

Can someone here answer this question for me?

Thanks!