How to maintain the CO2 protection welding machine

Daily maintenance of carbon dioxide protection welding machine.

1. Contact tip:

1. The length is equal to the length of the nozzle or 2-3mm shorter than the nozzle.

2. When the inner hole is worn large, it should be replaced to ensure the stability of the arc.

3. It must be tightened (the user needs to be equipped with the corresponding tools).

4. Ensure the dry elongation length during welding to ensure the welding quality.

2. Nozzles:

1. Be sure to tighten it when using it to prevent air leakage and length changes.

2. Clean up the splash in time, but not by tapping.

3. Ensure the concentricity with the contact tip to avoid turbulence and eddy current.

3. Gas sieve:

1. It must be used when welding, and must be replaced when damaged. Yes: uniform outgas; Prevents the nozzle from sticking to the contact tip; Isolation to protect the nozzle joint.

Fourth, the barrel:

1. It must be in place and firmly tightened with a 4mm Allen wrench when installing.

2. The insulating sleeve is intact, and if it is damaged, it should be dealt with in time.

5. Wire feeding tube:

1. The length meets the requirements (subject to the original Panasonic gun), and should not be too short.

2. It is necessary to regularly check the resistance of wire feeding, clean and dust in time, and use the beating method, kneading method and wire drawing method.

6. Welding torch:

1. Install the wire feeder in the correct position and tighten it firmly with a 6mm hexagon wrench.

2. Gently tighten the tracheal joint with a wrench.

3. The bending radius should not be less than R300mm during welding, otherwise the air supply and wire feeding will be affected.

4. It is strictly forbidden to drag the wire feeder with a welding gun.

7. Welding cable:

1. All connection points in the welding circuit are firm, and no false connection and loose connection are allowed.

2. Ensure that the cross-sectional area of the cable matches the maximum current of the welding machine, and cannot be replaced by steel and iron bars.

3. The cable cannot be coiled when lengthened to prevent inductance.

8. Wire feeder:

1. The groove diameter of the wire feeding wheel, the selection of the wire diameter on the welding power panel, and the pressure of the handle correspond to the diameter of the welding wire.

2. The welding current is in line with the allowable current range of the wire diameter.

3. Avoid impact when moving, so as not to cause deformation and damage to the frame, and do not pull the welding torch to move.

9. Gas supply system:

1. When using CO2, the flowmeter must be heated, and the scale tube is perpendicular to the horizontal plane.

2. The gas flow rate is determined according to the current, generally between 15 and 25l min.

3. The gas cylinder must be fixed upright, and the gas cylinder must not fall, otherwise the flowmeter will be damaged.

4. There should be no gas leakage in any part of the gas supply pipeline to save gas.

You don't have to be so poor, just open the case and blow the dust once every 2 months.

Open the machine cover and blow the ash once a month.

Hello, how to adjust the carbon gas shielded welding host of the dioxygen section mountain roundization (1) power regulation; Voltage regulation is divided into two steps: 1. Coarse adjustment: The coarse adjustment switch is divided into three gears, and the voltage increases gradually when adjusting.

Two. Fine adjustment: The fine adjustment switch is divided into ten gears, and the voltage of the micro adjustment switch knob will increase step by step when adjusting on the base of coarse adjustment.

2) Wire feeding speed adjustment: wire feeding speed adjustment is current adjustment, in the welding process according to the welding process requirements, adjust the wire feeding speed knob on the front panel to obtain the best welding current. (3) Inductance selection:

The negative output of the welding machine is multi-terminal, and the inductance of different output terminals is different, which is easy to choose. 1.First of all, energize the welding machine.

2.Turn on the control "Power" switch located on the front panel of the welder, and the indicator light is on. 3.

Pass the welding wire through the wire feeding wheel, welding torch and contact tip, and check the condition of the welding wire, and there should be no blockage. 4.Open the opening and closing of the preheater and the pressure reducing valve, turn on the "gas detection" switch, check and adjust the shielding gas flow, and turn off the "gas detection" switch after completion.

5.After the above-mentioned preparatory work is completed, welding can be carried out, and the welding button is located on the welding gun, and the welding can be carried out by pressing, and the welding can be stopped when the welding is released.

How to use carbon dioxide protection welding machineHello dear, there are two ways to use carbon dioxide protection welding machine: 1. Short-circuit transition welding CO2 arc welding is the most widely used in short-circuit transition, mainly used for thin plate and full-position welding, and the standard parameters are arc voltage welding current, welding speed, welding circuit inductance, gas flow and wire extension length, etc. Arc voltage and welding current, for a certain wire diameter and welding current (i.e., wire feeding speed), the appropriate arc voltage must be matched to obtain a stable short-circuit transition process, and the spatter at this time is minimal.

2. The fine particles are transitioned in CO2 gas, for a certain diameter of the welding wire, when the current increases to a certain value and is accompanied by a higher arc voltage, the molten metal of the welding wire will fly freely into the molten pool with small particles, and this transition form is the transition of fine particles. The arc penetration is strong during the transition of fine particles, and the base metal has a large penetration depth, which is suitable for medium and heavy plate welding structures. The reverse DC method is also used for fine-grain transition welding.

Extended information: When normal welding, the flow rate of CO2 is 10L min and 25L min for thin plate welding below 200A; For thick plate welding above 200A, the flow rate of CO2 is 15L min 25L min; The automatic welding of coarse wire is 25l min and 50l min. Specific process parameters current:

Generally: 150-350 amps, common specifications are 200-300 amps. Voltage:

General range value: 22-40 volts, common specification is 26-32 volts. Dry elongation length:

The length of the wire protruding from the tip of the contact tip is generally 10-15 times the diameter of the wire, i.e. 10-15 mm long. Welding speed: the length of the weld seam welded per minute, 300-500 mm per minute for a single weld bead, up to 25000 mm per minute for individual (such as LQ605 for picking wire), 120-200 mm min for swing welding.