Knowledge

Since the welding torch needs to swing back and forth frequently, and the frequency of swing directly affects the appearance of the welding seam, the driving mechanism is required

1. Selection of welding rod: 1.1 The pipe root welding adopts argon arc electrode with a diameter of 3.2mm. Filling, cover welding using junction 507 electrode, the diameter of the

1. The arc length should not be too long during welding, and the welding pool should not be too large, otherwise it will cause poor weld formation or pores. 2. Be sure to control t

1. Welding materials must be stored in a dry and ventilated indoor warehouse. Harmful gases and corrosive media are not allowed to be placed in the welding consumable storage wareh

1. Do not knock off the coating after welding, so that the welding bead can be cooled slowly. After the welding bead is cooled, knock off the coating and clean the welding bead. 2.

1. The steel pipe should be placed at a distance of not less than 1mm from the edge of the shaped pipe trench to prevent the collapse of the pipe trench from hurting and damaging t

1. The nozzle has been cleaned up to the standard according to the cleaning requirements. 2. When hoisting the steel pipe, the special nylon sling for the hoisting pipe must be use

1. All welders who perform welding must hold the certificate of passing the examination or the certificate of employment issued by the unit designated by the owner. 2. All welders

1. When the welding consumables are taken back from the owner's warehouse, the person in charge of the materials shall inspect them together with the technical quality personnel as