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公开(公告)号：US20210140896A1
公开(公告)日：2021-05-13
申请号：US16677940
申请日：2019-11-08
摘要： There is disclosed methods and apparatus for detecting contamination on cold-formed steel parts prior to subsequent press-hardening in which such contamination may be problematic, and also for detecting contamination on cold-forming machinery that might be transferred to cold-formed steel parts during cold-forming. In some aspects, the disclosure also relates to methods and apparatus for detecting splits or cracks in cold-formed steel parts prior to subsequent press-hardening. The methods and apparatus make use of ultraviolet light to detect contamination or to detect splits or cracks.
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公开(公告)号：US11149327B2
公开(公告)日：2021-10-19
申请号：US16422643
申请日：2019-05-24
申请人： voestalpine Automotive Components Cartersville Inc. , Bayerische Motoren Werke Aktiengesellschaft
摘要： A method and a device for heating a sheet metal blank or a formed sheet metal component above the austenitization temperature for the purpose of quench hardening, wherein the dew point of the furnace atmosphere is set to −15° C. to 15° C., preferably to −10° C. to 10° C., in particular for the formation of a loosely adhering oxide skin, for controlling an oxide skin on the sheet metal or component coated with a metallic corrosion protection layer or an uncoated sheet metal or component.
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公开(公告)号：US11047804B2
公开(公告)日：2021-06-29
申请号：US16677940
申请日：2019-11-08
摘要： There is disclosed methods and apparatus for detecting contamination on cold-formed steel parts prior to subsequent press-hardening in which such contamination may be problematic, and also for detecting contamination on cold-forming machinery that might be transferred to cold-formed steel parts during cold-forming. In some aspects, the disclosure also relates to methods and apparatus for detecting splits or cracks in cold-formed steel parts prior to subsequent press-hardening. The methods and apparatus make use of ultraviolet light to detect contamination or to detect splits or cracks.
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