Quenching and reheating process for steel machine wire - allotropic transformation between rolling and drawing

摘要

Treatment process for steel machine wire, post rolling and ante drawing, and economic especially for small batches, submits loose conveyed coils to rapid air and water cooling followed by reheating in say a boiling salt solution, the magnitude of austenitic grains being controlled in the cooling stage by conveyor speed and water debit respectively and heating controller by the depth of the bath. Preferably the plant sequentially comprises three sections, descending air water temperature gradient, depot head with conveyor and coned coil collectors with thermal baths etc.