1) Homogenization annealing: heating to 475~490℃; holding for 12~14h; furnace cooling.
2) Complete annealing: heating to 350~400℃; depending on the effective thickness of the material, the holding time is 30~120min; cooling in the furnace to 300℃ at a speed of 30~50℃/h, and then air cooling.
3) Rapid annealing: heating 350~460℃; holding time 30~120min; air cooling.
4) Quenching and aging: Quenching at 495~505℃, water cooling; natural aging at room temperature for 96 hours.
7075 aluminum plate is a super-hard aluminum plate, also known as aviation aluminum plate. What is the hardness of Henan Mingtai Aluminum's national standard 7075 aluminum plate? The hardness of the national standard 7075 aluminum plate is generally based on HB, and the general range is between 130-180.
