Cold extrusion process to produce enclosing screw ring for steel tank as packing container

During the production of the helicoid, the hem part is formed through cold extrusion in a press, rather than cutting, and this can raise the smoothness of the hem part and result in long service lifeof the enclosing helicoid. The technological process includes blanking and drawing, cutting upper end...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YOULONG ZHANG, XIAOFU YAN, YANGLONG JIANG
Format:	Patent
Sprache:	eng
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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