How can the stainless steel bar 310 be welded?
Preparation before welding: 4mm the thickness should not be opened, welded directly, and welded on one side at one time. 4 to 6 mm thickness, butt welding can be used without open weld, double face welding. 6 mm or more, usually open V or U, X shaped groove.
Hand welding is a very common and easy to use method of welding. The length of the arc is adjusted by the hand, which is determined by the size of the gap between the electrode and the workpiece. At the same time, when used as an arc carrier, the welding rod is also the filling material of the weld.This method of welding is simple and can be used to weld almost all materials. For outdoor use, it has good adaptability, even under water. In the electrode welding, the arc length depends on the man's hand: when you change the gap of the electrode and the workpiece when you change the length of the arc. In most cases, welding using DC electrode as arc carrier, as well as the weld filler material. The electrode is composed of alloy or non alloy metal core wire and electrode coating. This layer protects the welding seam from the air and stabilizes the arc. It also causes the formation of slag layer and protects the welding seam to form it. The electrode can be either a titanium electrode or an alkaline one, depending on the thickness and composition of the coating. The titanium electrode is easy to weld, the welding seam is flat and beautiful, and the welding slag is easy to remove. If the electrode is stored for a long time, it must be re baked because the moisture from the air will soon accumulate in the welding rod.
Butt welding parts, filler wire for degreasing and oxidation skin. To ensure welding quality.Welding parameters: welding current, tungsten pole diameter, arc length, arc voltage, welding speed, protection air flow, nozzle diameter, etc..(1) welding current is the key factor to decide the formation of weld. Usually determined by the material, thickness, and groove shape of the weldment.(2) the welding pole diameter is decided by the welding current size. The bigger the current is, the bigger the diameter is.(3) arc welding and arc film, the arc length range is about 0.5 to 3mm, and the corresponding arc voltage is 8~10V.(4) welding speed: the current size, welding material sensitivity, welding position and mode of operation should be taken into account when choosing the welding speed.
The most commonly used welding methods for stainless steel are manual welding (MMA), followed by metal gas shielded welding (MIG/MAG) and tungsten inert gas welding (TIG).
