Method for the production of chassis parts from micro-alloyed steel with improved cold formability
Abstract:
The invention relates to a method for producing a chassis part from micro-alloyed steel, having an improved cold workability of cold-solidified, mechanically separated sheet-metal edges, comprising the following method steps: —providing a hot-rolled strip or a hot-rolled strip sheet of the claimed alloy composition in weight percent, cutting a blank at room temperature and optionally carrying out further punching or cutting operations, —heating exclusively the sheet metal edge regions of the blank, which have been cold-solidified by the cutting or punching operations, to a temperature of at least 700° C. with a dwell time of at most 10 seconds and subsequent cooling with air, —cold forming the blank in one or more steps to form a chassis part at room temperature.
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