Material is S45C or C45.
It is recommended by the customer that after forging (at min850+10=B0C),
it must fall in quenching tank with polymer quenching system.
but we can't be sure that all forging will be at the same or in
850+10=B0C temp when fall in to quenching media.
we propose, forging will be re-heated at 860=B0C in our Continuous
furnace and will be quenched at 860=B0C+10=B0C 9 or 850=B0C+10=B0C in the
tank. in this way we can maintain exactly same temp before quenching
and all forgings will have same micro structure and hardness. But
customer is not agreeing, saying that micro structure obtained thus
will cause problem to machining which is very minute and precise.
I just wonder how come micro same micro structure, which obtained
through different process will affect machining.
- posted 15 years ago