Steel forging temperature range

Thermal specification refers forging forging the selected thermodynamic parameters, including forging temperature, the degree of deformation, strain rate, stress state (forging method), the heating plus cooling rate. These parameters directly affect the microstructure and properties of metallic materials, and forgings malleable, reasonable choice of several thermodynamic parameters above, is to develop an important part of the forging process.

Forging temperature range is the temperature interval period before forging temperature and the final forging temperature. Determining the basic principle is forging temperature, we can ensure that the metal has a high plasticity and smaller deformation resistance in the forging temperature range and get the desired microstructure and properties. Forging temperature range should be as wide as possible a number, in order to reduce fire forging times and increase productivity.

Carbon steel forging temperature range, after adding other alloying elements in iron-carbon alloys, make iron a change in the form of carbon state diagram. Some elements (such as Cr, V, W, Mo, Ti, Si, etc.) reduce the r-phase zone, elevated points A3 and A1; others elements (e.g., Ni, Mn, etc.) to expand the r-phase region, to reduce the point A3 and A1 . All alloying elements are the S and E points to the left. Thus, alloy structural steel and alloy tool steel can also refer to the iron - carbon diagram to determine the initial forging temperature range, but the phase transition point (such as melting point, A3, A1, ACm, etc.) is required for each specific use of steel phase transition point.