Drawing die device for double-size longitudinal welded pipe

• Main Authors: HUANG CHUNYOU, YANG GANG, WU JUNCHUAN
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The utility model discloses a double-size straight welded pipe drawing die device which is used for adjusting the pipe diameter of a pipe fitting and comprises a front drawing die and a rear drawing die which are coaxially arranged, the inner diameter of the front drawing die is larger than that of the rear drawing die, and the pipe fitting sequentially penetrates through the front drawing die and the rear drawing die. Lubricating pieces are arranged between the front drawing die and the rear drawing die and/or on the side, away from the rear drawing die, of the front drawing die, and the lubricating pieces are used for discharging lubricants to the position between the pipe fitting and the front drawing die and the position between the pipe fitting and the rear drawing die. According to the drawing die device for the double-size longitudinal welded pipe, practice proves that after the welded pipe enters the two sets of drawing dies, the dies do not need to be adjusted, the size required by the standard is di