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公开(公告)号：US20210094132A1
公开(公告)日：2021-04-01
申请号：US17107120
申请日：2020-11-30
发明人： Nam Chul Cho , Jeong Wook Han , Sung Mo Cho
摘要： This application relates to a method of manufacturing a knife using a multilayer material. In one aspect, the method includes preparing a multilayer material for manufacturing a knife, and heating and then forging the multilayer material to form a knife-shaped structure including a blade part and a handle part. The method also includes grinding the blade part to form a sharpened knife-edge and applying mud, including kaolin and white clay, to an entire surface of the knife-shaped structure and removing the mud applied to the blade part. The method further includes heating the knife-shaped structure applied with the mud, and quenching the heated knife-shaped structure through oil-cooling. The method further includes etching a surface of the quenched knife-shaped structure to form a pattern on the surface and grinding the surface-etched knife-shaped structure to form a knife having a final shape.
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公开(公告)号：US12064837B2
公开(公告)日：2024-08-20
申请号：US17107120
申请日：2020-11-30
发明人： Nam Chul Cho , Jeong Wook Han , Sung Mo Cho
IPC分类号： B23P15/40 , B21J5/12 , B21K11/02 , B24B3/54 , B26B3/02 , C21D9/18 , C23F1/02 , C23F1/14 , C21D1/58
CPC分类号： B23P15/40 , B21J5/12 , B21K11/02 , B24B3/54 , B26B3/02 , C21D9/18 , C23F1/02 , C23F1/14 , C21D1/58
摘要： This application relates to a method of manufacturing a knife using a multilayer material. In one aspect, the method includes preparing a multilayer material for manufacturing a knife, and heating and then forging the multilayer material to form a knife-shaped structure including a blade part and a handle part. The method also includes grinding the blade part to form a sharpened knife-edge and applying mud, including kaolin and white clay, to an entire surface of the knife-shaped structure and removing the mud applied to the blade part. The method further includes heating the knife-shaped structure applied with the mud, and quenching the heated knife-shaped structure through oil-cooling. The method further includes etching a surface of the quenched knife-shaped structure to form a pattern on the surface and grinding the surface-etched knife-shaped structure to form a knife having a final shape.
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