1results about How to "Reduce tissue stress" patented technology

The application relates to the technical field of heat treatment, and particularly discloses a heat treatment method for a super-large whole frame. The method comprises the following steps: preliminary annealing: placing a titanium alloy whole frame on a hollowed-out type tray, and keeping the temperature at 850 DEG C + / - 10 DEG C for 3-4 hours; pre-air cooling: transferring to an air cooling area within 150 seconds, and rapidly cooling to 600 DEG C through four corner air blowers and middle air blowers of four sides; strong air cooling: transferring to an air cooling rack, and forcibly cooling through circumferential air outlets of a middle air outlet platform; stress relief annealing: pressure block annealing at 560 DEG C + / - 10 DEG C; slow cooling: furnace cooling at <= 30 DEG C / h to below 300 DEG C, and then slow cooling to room temperature at <= 15 DEG C / h in an adiabatic box. Through stage cooling, tooling cooperation and block deformation inhibition, the application solves the warping problem of the titanium alloy whole frame, the warping amount is reduced by more than 90%, and the room temperature and high temperature mechanical properties are better than the technical standard.