Pulse argon arc welding machine is a device that uses pulse current for argon arc welding, which can achieve high-quality, high-efficiency, and low deformation welding effects. The usage techniques of pulse argon arc welding machines mainly include the following aspects:

1. Select appropriate welding parameters:

The main parameters of pulse argon arc welding machine include base current, peak current, pulse frequency, duty cycle, arc length, etc. These parameters can affect the penetration depth, width, heat input, forming, etc. of the weld seam. Generally speaking, the base current should be selected within the range that the tungsten electrode can withstand, the peak current should be selected within the range that can ensure the stability of the molten pool, the pulse frequency should be selected within the range that can improve arc stability and reduce splashing, the duty cycle should be selected within the range that can control the size and temperature of the molten pool, and the arc length should be selected within the range that can ensure good protection and penetration. The specific parameter selection also needs to be adjusted based on factors such as welding material, thickness, joint form, position, etc.

2. Choose the appropriate tungsten electrode and gas:

Tungsten electrode is an important component of pulse argon arc welding machine, which directly affects the ignition and stability of the arc. The diameter, length, end shape, and added elements of the tungsten electrode can all affect the welding effect. Generally speaking, the diameter of the tungsten electrode should be selected based on the welding current and material, the length should be selected based on the nozzle size and welding position, the end shape should be selected based on the current type and material, and the added elements should be selected based on the current type and material.

The commonly used tungsten electrode additives include pure tungsten, thorium tungsten, cerium tungsten, lanthanum tungsten, etc., each of which has its own advantages and disadvantages and needs to be selected according to specific circumstances. Gas is another important component of pulse argon arc welding machines, which mainly plays a protective and control role. The type, purity, and flow rate of gas can all affect the welding effect. Generally speaking, the type of gas should be selected based on the material and current type, with a purity of over 99.99%. The flow rate should be selected based on the nozzle size and welding position.

3. Use the correct operating method:

The operation method of pulse argon arc welding machine mainly includes steps such as arc striking, wire feeding, rod transportation, and arc stopping, all of which require mastering certain skills. Arc striking is a key step for the pulse argon arc welding machine to start working. It requires maintaining an appropriate distance between the tungsten electrode and the workpiece, using high-frequency or touch methods to quickly ignite the arc, and adjusting the arc length in a timely manner. Wire feeding is a key step in filling metal in pulse argon arc welding machines. It requires the wire feeder and rod handler to coordinate and feed the filling metal into the molten pool at a certain angle and speed to avoid excessive or insufficient feeding. Rod transportation is a key step in controlling the formation of weld seams in pulse argon arc welding machines. It requires the rod operator to maintain a stable speed and direction, and to swing or stay appropriately according to the changes in the molten pool to ensure the uniformity and continuity of the weld seam. Arc stopping is a key step in completing the work of a pulse argon arc welding machine. It requires gradually reducing the current or intermittent arc stopping before the molten pool completely solidifies, avoiding shrinkage holes or cracks, and cooling under gas protection.

4. Pay attention to safety and maintenance:

During the use of pulse argon arc welding machines, attention should be paid to safety and maintenance to avoid accidents or equipment damage. In terms of safety, the following points should be noted:

Wear protective equipment such as gloves, masks, protective clothing, etc. to avoid electric shock, burns, eye injuries, etc.

Check whether the power supply, gas source, and water source are normal to avoid leakage, explosion, water seepage, etc.

Weld in a well ventilated area to avoid inhaling harmful gases or dust.

Stay away from flammable and explosive materials to avoid causing a fire.

After welding, turn off the power, gas, and water sources, and disconnect the connecting wires to avoid electric shock or waste of resources.

In terms of maintenance, the following points should be noted:

Regularly clean the surface and interior of the equipment, remove dust, oil, etc., and keep it clean and tidy.

Regularly check the working status of various components of the equipment, such as switches, indicator lights, sockets, circuits, etc., and promptly replace or repair any abnormalities found.

Regularly replace consumable parts such as tungsten electrodes, nozzles, and welding wires to maintain good welding performance.

Regularly maintain and maintain the equipment, adjust or lubricate according to the instructions.