| 摘要 |
The thread guide element (11) is a thin walled embossing component (19), which is positioned on the support rods (15,16) in a replaceable manner, and comprises a metallic material and two slotted sleeves (20A,20B) that are coupled by a connecting web. A heat-treated spring steel is applied as a material for the embossing component, and the embossing component is hardened following its molding. The embossing component is subjected to a surface treatment after hardening by hard chromium plating process. |
