Manufacturing process for porous opening metal pipe

Abstract

The multi perforated metal tube is made by crushing the metal blank, cold rolling and strap opening to form the metal plate, punching holes on the metal plate, welding perforated round tubes through mold locating, grinding the round tube to get the final product, and finally compressing the got round tube to multi perforated square tube, rectangular tube or shape tube through molds. It is easy in process, low in cost, high in efficiency, good in material quality, strong in structure, less in welding joint, high in material recovery rate, low in mold scrap and strong in repairing.

Description

technical field

[0001] The invention relates to a preparation process of a metal pipe, in particular to a preparation process of a metal pipe with a porous opening. Background technique

[0002] Metal pipes with porous openings are mostly used in daily life, and are often used in coffee tables, dining tables, beds, shoe racks, shelves, fitness equipment, stairs, guardrails, protective nets, doors, carports, grids and billboards, etc. At present, the production of metal pipes with porous openings is the secondary processing of finished round pipes, square pipes, rectangular pipes, and special-shaped pipes. The mouth is assembled and combined to form the pattern, and then welding, grinding, and surface treatment are completed to complete the finished metal pipe engineering product. The existing process of producing metal pipes with porous openings is to punch holes and punch holes on the pipes, so that the mold scrap rate is high and the repairing force is poor, which brings ...