Method for the optimized production of a component with at least one ancillary formed element

Abstract

The invention relates to a method for the optimized production of a component, in particular from steel, with at least one secondary formed element, comprising the steps of a) providing a blank which has been cut to size at room temperature from a strip or a sheet and in which cut-outs and/or holes have optionally been created by stamping or cutting operations; b) thermal treatment of selected edge regions of the blank that have been cold-hardened by the stamping or cutting operations, in which the edge regions are heated to a temperature of at least 600° C. for a maximum 10 seconds; c) forming the thermally treated edge regions of the blank at ambient temperature to obtain a component with an unfinished secondary formed element; characterized by an additional step d), a calibrating step for obtaining the component with the secondary formed element, wherein the unfinished secondary formed element is formed at ambient temperature into a secondary formed element that has an increased and/or more uniform wall thickness in comparison with the unfinished secondary formed element.

What is claimed is: 
     
         1 .- 14 . (canceled) 
     
     
         15 . A method for the optimized production of a component, in particular of steel, with an ancillary formed element, comprising the steps of
 a) providing a blank cut from a strip or metal sheet at room temperature and optionally produced with recesses and/or openings by punching or cutting operations;   b) temperature-treating selected edge regions of the blank that have been strain-hardened by the punching or cutting operations, by heating the edge regions to a temperature of at least 600° C. for a period of maximal 10 seconds;   c) forming the temperature-treated edge regions of the blank at ambient temperature to obtain a component with raw ancillary formed element; and   d) executing a calibration for obtaining the component with ancillary formed element by forming the raw ancillary formed element at ambient temperature into the ancillary formed element which has increased and/or homogenized wall thickness compared to the raw ancillary formed element.   
     
     
         16 . The method of  claim 15 , wherein the ancillary formed element is a collar or a flange. 
     
     
         17 . The method of  claim 15 , further comprising, prior to the temperature-treating step, forming selected edge regions of the blank that have been strain hardened by the punching or cutting operations at room temperature. 
     
     
         18 . The method of  claim 15 , wherein the raw ancillary formed element is generated in step c) by forming the edge regions in a defined direction and wherein the formation of said edge regions in step d) is implemented in a direction opposite to the defined direction. 
     
     
         19 . The method of  claim 15 , wherein the temperature-treating step is carried out for a period of 0.02 to 10 seconds. 
     
     
         20 . The method of  claim 15 , wherein the temperature-treating step is carried out for a period of 0.1 to 2 seconds. 
     
     
         21 . The method of  claim 15 , wherein the temperature-treating step is carried out at a temperature of 600° C. to a solidus temperature. 
     
     
         22 . The method of  claim 15 , wherein the temperature-treating step is carried out at a temperature between a transformation temperature Ac 1  and a solidus temperature. 
     
     
         23 . The method of  claim 15 , wherein the edge regions are heated to the temperature of at least 600° C. Inductively, conductively, by radiation heating, or laser radiation. 
     
     
         24 . The method of  claim 15 , further comprising coating the blank with an organic and/or metallic coating. 
     
     
         25 . The method of  claim 15 , wherein the temperature-treating step of the edge regions, starting from an edge, takes place in a region which corresponds at most to a thickness of the blank. 
     
     
         26 . The method of  claim 15 , further comprising flushing a region about a location of the temperature treatment during and optionally before and/or after the temperature-treating step with inert gas for protection against oxidation. 
     
     
         27 . A component, in particular of steel, comprising an ancillary formed element with high and/or homogeneous wall thickness, wherein for the production of the component a blank is provided which is cut at room temperature from a strip or a sheet metal and in which recesses and/or openings are optionally produced by punching or cutting operations, wherein a temperature treatment of selected edge regions of the blank that have been strain hardened by the punching or cutting operations is carried out, with the edge portions being heated to a temperature of at least 600° C. for a period of maximal 10 seconds, wherein the temperature-treated edge regions of the blank was formed at room temperature to obtain a component with raw ancillary formed element, and wherein the raw ancillary formed element was formed to obtain the component with ancillary formed element at room temperature into an ancillary formed element of increased and/or homogenized wall thickness compared to the raw ancillary formed element. 
     
     
         28 . The component of  claim 27 , wherein the ancillary formed element is a collar or a flange. 
     
     
         29 . The component of  claim 27 , produced from a steel with the following alloy composition in wt.-%: 
       
         
           
                 
                 
                 
               
                     
                     
                 
                     
                   C 
                    0.01-0.2% 
                 
                     
                   Si 
                       0.2-4.0% 
                 
                     
                   Mn 
                       0.5-4.0% 
                 
                     
                   Al 
                   0.02-0.1  
                 
                     
                   Ti 
                   0.0-0.2 
                 
                     
                   V 
                   0.0-0.3 
                 
                     
                   Nb 
                   0.0-0.1 
                 
                     
                     
                 
             
                
               
               
                
                
                
                
                
                
                
                
               
            
           
         
       
       with optional addition of Cr, Ni, Mo, B, balance iron, including impurities resulting from smelting. 
     
     
         30 . A blank of steel for use in the production of a component with at least one ancillary formed element, wherein the blank previously cut at room temperature from a strip or a metal sheet is subjected, after undergoing punching or cutting operations at room temperature for realizing recesses or openings, in selected edge regions that were strain hardened by the punching or cutting operations to a temperature treatment in which the edge regions are heated of at least 600° C. for a period of a maximal 10 seconds, wherein the temperature treated edge regions of the blank are formed at room temperature to obtain a component with raw ancillary formed element, and wherein the raw ancillary formed element is formed at room temperature into an ancillary formed element having a wall thickness which is increased and/or homogenized compared to the raw ancillary formed element.