High frequency heat treatment of several common heat treatment concept

High frequency heat treatment of several common heat treatment concept

Normalizing: steel or steel heated to a critical point AC3 or ACM more appropriate temperature keeping time, cooled in the air after get pearlite heat treatment process of the organization.
2. Annealing: hypoeutectoid steel workpiece heated to above AC3 20 to 40 degrees, heat preservation after a period of time, with the slow cooling furnace (or buried in the sand or lime cooling) to 500 degrees Celsius inair cooling heat treatment process
3. The solution heat treatment: keep single-phase zone temperature alloy is heated to high temperature, the excess phase dissolves into solid solution, and then rapidly cooling, to get the supersaturated solid solution heat treatment process
4. Aging: alloy after solution heat treatment or cold plastic deformation at room temperature or slightly above room temperature to keep, the phenomenon of its performance change with time.
5. Solid solution treatment: make various phase in the alloy dissolves, solid solution and improve the toughness and corrosion resistance performance, eliminate stress and softening, in order to continue processing molding
6. Aging treatment: in the precipitation strengthening phase temperature heating and heat preservation, make the strengthening phase precipitates out, hardening, increase the intensity
7. Quenching: the steel austenitizing with proper cooling, cooling speed after all or certain parts within the cross section within the scope of martensite and unstable organization structure change of heat treatment process
8. Tempering: after hardening of the workpiece heated to a critical point AC1 under proper temperature keeping time, method of cooling, then used to meet the requirements to obtain required by the organization and performance of heat treatment process