How to do a good job in the protection of argon electric welding?

Argon arc welding priming, electrode arc welding CO2 cover surface, referred to as argon electric welding.

It is to pass argon shielding gas around the arc welding to isolate the air from the welding area and prevent oxidation in the welding area.

Argon arc welding technology is based on the principle of ordinary arc welding, the use of argon to protect the metal welding consumables, through high current to make the welding consumables melt into a liquid state on the welded substrate to form a molten pool, so that the welded metal and the welding consumables to achieve metallurgical combination of a welding technology, because of the continuous delivery of argon in the high temperature melt welding, so that the welding consumables can not contact with the oxygen in the air, thereby preventing the oxidation of the welding consumables, so that stainless steel, iron hardware metals can be welded.

Extended information: The working principle of argon arc welding in the main circuit, auxiliary power supply, drive circuit, protection circuit, etc. is the same as that of hand arc welding. I will not go into more detail here, but focus on the unique control function and arc starting circuit function of argon arc welding machine.

The reason why TIG welding can be so widely used is mainly because of the following advantages.

1. Argon protection can isolate the adverse effects of oxygen, nitrogen, hydrogen and other gases in the air on the arc and molten pool, reduce the burning loss of alloying elements, and obtain dense, spatter-free and high-quality welded joints;

2. The arc of argon arc welding is stable, the heat is concentrated, the arc column temperature is high, the welding production efficiency is high, the heat affected zone is narrow, and the weldment stress, deformation and crack tendency of the weldment are small;

3. Argon arc welding is open arc welding, which is convenient for operation and observation;

4. The electrode loss is small, the arc length is easy to maintain, and there is no flux and coating layer during welding, so it is easy to realize mechanization and automation;

5. TIG welding can weld almost all metals, especially some refractory metals and easily oxidized metals, such as magnesium, titanium, molybdenum, zirconium, aluminum, etc. and their alloys;

6. It is not limited by the position of the weldment, and can be welded in all positions.

When welding, toxic gases and dust will be generated, and we must do a good job in protecting against these two hazards. Workers must use corresponding protective glasses, gas masks, masks, gloves, wear welding protective clothing, insulated shoes, never wear short-sleeved clothing or rolled up sleeves, if working in a confined space with poor ventilation conditions, must wear a long-tube respirator or air respirator with air supply performance.

1. Before work, carefully check whether the tools and equipment are in good condition, and whether the shell of the welding machine is reliably grounded. Welder's.

The repair shall be carried out by the maintenance personnel of the electrical maintenance state, and other personnel shall not dismantle and repair.

2. Before work, the working environment should be carefully checked, and the work can only be started when it is normal, and the labor insurance should be worn before construction.

Protective equipment, wear a hard hat. Wear a seat belt when working at height. Knock on welding slag, grinding wheels and wear flat glasses.

3. If the power cord of the welding machine or the welding machine fails, it should be repaired together with the electrician to prevent electric shock.

Old. 4. The grounding wire should be reliable and safe, and it is not allowed to use scaffolding, wire cables, machine tools, etc. as grounding wires.

5. Welding in close to flammable places should have strict fire prevention measures, and if necessary, the consent of the safety officer must be used before work.

After welding, it should be carefully checked to ensure that there is no trace of fire before leaving the work site.

6. Welded sealed containers and pipes should be vented first. Repair the oiled container, clean it and open it.

Manhole cover or vent hole before welding.

7. When welding operations are carried out on the used tank, it is necessary to find out whether there are flammable and explosive gases or materials, and it is strictly forbidden to weld before being identified. Welding tongs and welding wires should be checked and maintained frequently, and damage should be found.

When repairing or replacing, if a short circuit is found during the welding process, the welding machine should be turned off first, and then the cause of the short circuit should be found to prevent the welding machine from burning out.

8. Welding hanging codes, strengthening scaffolding and important structures should have sufficient strength, and knock off the welding slag to carefully check whether it is safe and reliable.

9. When welding in the container, attention should be paid to ventilation and harmful smoke and dust should be discharged to prevent poisoning. There should be 2 people welding in a small container to prevent accidents such as electric shock.

10. The paint in the container is not dry, and the combustible gas is not allowed to be welded.

11. After the work is completed, the faucet wire joint must be disconnected, the scene must be inspected, the fire must be extinguished, and the power supply must be cut off.

Argon combined welding is a welding method that uses argon arc welding to weld the bottom of the weld and then fills the cover surface with electric arc welding.

During welding, the angle and position of each welding zone are first determined for the circumferential butt weld of the pipe, and then the parameters of each zone are determined. Such as preheating temperature, welding temperature, current, welding pulse, argon flow, etc., the advantages of the two welding methods are integrated, and the quality of the project can be guaranteed. The same welder uses the argon electric joint welding process and the manual arc welding process to weld the same weld, and the welding efficiency of the argon electric joint welding process is 2 4 times that of manual arc welding and 1 2 times that of argon arc welding, which significantly shortens the construction period.

What is argon combined welding of pipelines? Why use argon and electric welding? Novice dry pipes must be understood.

Argon electric welding is also known as:Argon protection family silver weldingArgon shielding gas is introduced around the arc weld to isolate the air from the weld zone and prevent oxidation of the weld zone. The argon arc welding machine is a machine that adopts argon arc welding and uses high-voltage breakdown arc strike. Different functional argon arc welding technology is a welding technology based on the principle of ordinary arc welding, which uses argon to protect metal welding materials, and melts the welding materials into a liquid state on the substrate to form a molten pool through high current, so that the welding metal and the welding materials can achieve metallurgical repentance and trembling.

Since argon gas is continuously introduced during high-temperature melting welding, the welding material does not come into contact with oxygen in the air, preventing the oxidation of the welding material, so stainless steel and iron metal can be welded.

Argon welding is the use of argon arc welding to weld the bottom of the weld, and then use arc welding to fill the welding surface of the welding method of welding, first of all, the pipe circumferential butt weld to determine the angle and position of each welding area, and then determine the parameters of each area. Such as preheating temperature, welding temperature, current, welding pulse, argon flow rate and other holes, comprehensive slag holding the advantages of the two welding methods, can better ensure the quality of the project.