Induction hardening steel to austenitic temperatures can result in temper back, or annealing of adjacent areas of the material that have been hardened previously. This is particularly important in the induction hardening of crankshafts, camshafts, gears and critical components. This publication discusses above mentioned effect along with some other important features of induction hardening and [...]
In some applications heat treating by induction faces certain challenges. Typical examples would be applications where the workpiece contains longitudinal and / or transverse holes, keyways, grooves, various orientations of hollow areas, sharp corners and other discontinuities. Existence of these features can result in undesirable appearance of hot and cold spots, cracks, and excessive distortion. [...]
The selection of forging temperatures for steels is based on carbon content, alloy composition and forging specifics, including the temperature range for optimum plasticity and the amount of reduction. Based on these considerations, optimum forging temperatures that result in the material’s lowest flow stress (lowest forging pressure) are selected. Click here to read more.
If the induction coil contains numerous brazed joints and, in particular, if there are 90° joints, then water flow in cooling coil turns could be impeded. This problem is more likely to occur if small diameter tubing is used for coil fabrication. As a result, booster pumps may be needed to provide sufficient pressure for [...]
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