How to know about the hardness of aluminum profile?

To strictly in accordance with the process requirements for aging, insulation time should be appropriate to prevent under-aging or over-aging resulting in hardness is not enough. Blank loading and furnace loading, aluminum profile extrusion loading frame can not be too dense, material and material between the space, especially the ventilation of the small material, thick material interval is even larger, pipe material and small material, plate material combined with a box, pipe material down so as to facilitate the aging cycle of air supply.