We used to preheat our board to 100degC, be sure you measure the temperature at the board not the preheater and use a Metcal 725 tip for solid plane. It works well on our 12 layers board with 4 solid plane layers.
Regards
Yak Peng
Don_well wrote:
---------------------------------------------------Hi allAs we know hand soldering PTH component is difficult on a tens-layer boards because of high heat sink.The solder volume filling level is always less than 50%. Could you please give me any ideas to settle this problems.Below is only for referrence.
1 Preheat the board about 100 degrees before rework.
2 Design a enlarged pad before manufacture.
3 >=25% solder level is acceptable.
Thanks for your advice.
B.Regards
Don
Huawei Tech Ltd