发明名称 THE FORMING METHOD & APPARATUS OF KNIFE
摘要 The method for forming a knife blade for shaving leather includes processes of: bending steel plate, heating the bended steel plate up to 1350 C, making it pass through a plurality of rollers, and spraying cooling water while passing through the rollers so that 0.1mm thick hardened layer can be formed. The apparatus comprises a column which has a screw correspondent to the pitch of the knife blade, female rollers having steps, and male rollers, inserted into the steps formed in the female rollers.
申请公布号 KR900002193(B1) 申请公布日期 1990.04.04
申请号 KR19870000347 申请日期 1987.01.17
申请人 HONG SUN-HO 发明人 HONG SUN-HO
分类号 B21H7/10;(IPC1-7):B21H7/10 主分类号 B21H7/10
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