Component i.e. sash fastener, manufacturing method for motor vehicle door, involves cooling metallic sleeve in die tool such that sleeve takes martensitic microstructure, and taking out sleeve from die tool as finished sash fastener

摘要

The method involves heating a metallic sleeve to an austenitizing temperature within a range of 850 to 950 degree Celsius such that the sleeve takes an austenitic microstructure. The sleeve is brought to desired end geometries in a die tool by a massive forming process. The metallic sleeve is cooled in the die tool such that the sleeve takes a martensitic microstructure. The sleeve is taken out from the die tool as a finished sash fastener (4). A material of the sleeve flows against a press direction of the die tool during the massive forming process.