Can argon arc welding machine weld aluminum?

Yes, argon arc welding can weld aluminum, and argon arc welding can weld stainless steel, superalloy, titanium alloy, aluminum alloy and other materials, which are used in nuclear energy, aerospace, shipbuilding, electronics, metallurgy and other industries.

Argon arc welding machine is a machine using argon arc welding, which uses high voltage breakdown to start arc. Argon arc welding, that is, tungsten inert gas shielded welding, refers to the welding method with industrial tungsten or active tungsten as non-melting electrode and inert gas (argon) as protection, which is called TIG for short. Generally used for 6 ~ LOMM thin plate welding and thick plate single-sided welding and double-sided forming back cover welding.

Argon arc welding machine and hand arc welding machine are similar in main circuit, auxiliary power supply, driving circuit and protection circuit. But it adds several controls on the basis of the latter: 1, manual switch control; 2. High frequency and high voltage control; 3. Boost arc control. In addition, in the output loop, the argon arc welding machine adopts the negative electrode output mode, and the output negative electrode is connected to the electrode needle and the positive electrode is connected to the workpiece.

principle of operation

The arc initiation of argon arc welding adopts high voltage breakdown. First, high frequency and high voltage are applied between the electrode needle (tungsten needle) and the workpiece, and argon gas is broken down to make it conductive, and then continuous current is introduced to ensure arc stability.

The working principle of argon arc welding machine in main circuit, auxiliary power supply, driving circuit and protection circuit is the same as that of manual arc welding machine. I won't describe it here, but mainly introduce the unique control function and arc initiation circuit function of argon arc welding machine.

Operation guide

1, argon arc welding switch must be operated by special personnel.

2. Check whether the equipment and tools are in good condition before work.

3. Check whether the welding power supply and control system have grounding wires, and add lubricating oil to the transmission part. To rotate normally, argon and water must be unblocked. If there is water leakage, it should be repaired immediately.

4. Check whether the welding torch is normal and whether the grounding wire is reliable.

5. Check whether the high-frequency arc ignition system and welding system are normal and whether the wire and cable joints are reliable. For automatic TIG welding, check whether the adjusting mechanism and wire feeding mechanism are in good condition.

6. Select the polarity according to the workpiece material and connect the welding circuit. General materials are directly connected by DC, and aluminum and aluminum alloys are connected by reverse connection or AC power supply.

7, check whether the welding groove is qualified, groove surface can not have oil, rust, etc. , remove oil and rust within 200mm on both sides of the weld.

8. Check the reliability of the fixture, and check the preheating equipment and temperature measuring instrument for the butt welding parts that need preheating.

9, argon arc welding control button shall not be far away from the arc, so that in case of failure can be closed at any time.

10, using high frequency arc ignition must always check whether there is leakage.

1 1, the equipment fault should be repaired without power, and the operator shall not repair it by himself.

12. Exposure or other parts are not allowed near the arc, and smoking and eating are not allowed near the arc to avoid inhaling ozone and smoke.

13, when grinding thorium tungsten electrode, you must wear masks and gloves, and abide by the operation procedures of the grinder. It is best to choose cerium tungsten electrode (less radiation). The grinder must be equipped with an exhaust device.

14. Operators should always wear electrostatic dust masks. Minimize the time of high-frequency electric action during operation. Continuous work shall not exceed 6 hours.

15, argon arc welding work site must be ventilated. Start ventilation and detoxification equipment at work. When the ventilation device fails, it should stop working.

16, argon bottles are not allowed to be smashed, and there must be a bracket when standing, and stay away from open flames for more than 3 meters.

17, when argon arc welding is carried out inside the container, special masks should be worn to reduce the inhalation of harmful smoke. Outside the container, there should be a person to supervise and cooperate.

18. Thorium-tungsten rods should be stored in lead boxes to avoid injury caused by radioactive dose exceeding safety regulations when a large number of thorium-tungsten rods are gathered together.