Preparation method of special-shaped cross-shaped copper pipe with outer grooves

• Main Authors: QIAO GAOPAN, HUANG HONGBING, CHEN JINGWEI, MAO XIANGFEI
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• 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 invention discloses a preparation method of a special-shaped outer groove cross copper pipe, which comprises the following steps: S1, carrying out fusion casting, rolling and disc drawing on copper liquid to prepare a pipe blank; S2, flattening a pipe head of the pipe blank, installing a floating core head from the flattened part of the pipe blank, and carrying out head manufacturing treatment on the flattened part of the pipe blank so as to limit the floating core head and the head manufacturing part of the pipe blank; and S3, the head manufacturing position of the pipe blank sequentially passes through a pre-oval module and a cross-shaped groove module to manufacture the cross-shaped copper pipe, when the pipe blank passes through the pre-oval module, the pipe blank is stretched to form an oval-shaped copper pipe, when the oval-shaped copper pipe passes through the cross-shaped groove module, the oval-shaped copper pipe is stretched and used in cooperation with a floating core head, and a plurality of p