How to adjust the current and voltage of the second welding?

Satisfactory answer Enthusiastic Ask Friends 2011-10-02The current is the speed of the wire, and the voltage is the spatter of the wire. The voltage and current do not match, the voltage is larger, and the splash will become smaller (not too large, degree, you need to master it yourself, the voltage is slightly larger than the current 2Generally, for example, a current of 300.

Voltage adjustment 32Even if you are given a certain value, the same value of the two welding machines, the effect of welding is not the same, the main thing is that you accumulate experience by yourself, you can first adjust the voltage to the maximum, the current does not move, and then weld it and you will know, it seems that the molten iron in the molten pool is very thin, and you are adjusting the voltage to the minimum, you will find that the molten iron is very thick. Then you don't move the voltage, adjust the current to the maximum, you will find that the wire is fed very quickly, and the wire may be sent out without melting, you are adjusting the current to the minimum, you will find that the wire is sent very slowly, don't you know what the current and voltage do?

Typing so many words, my hands hurt, let's add points Follow-up question: I know what you said, but thank you! However, I think that there are many people who know the role of current and voltage, but when welding large and long welds, there is a kind of ingenious cooperation between the two, which not many people know.

After adjustment, it is welded out with a special pendulum welding method, and there is not much oxide scale, which is shiny and straight, quite perfect. I'm afraid that if I can't find this kind of ingenuity with an unfamiliar welding machine in a strange place, it is not solid, hehe!

Second, the welding current and voltage regulation.

Summary. Second, the current and voltage adjustment methods of welding are as follows: under the condition of a certain current, the voltage and wire feeding speed should be reversed;

Second, the current and voltage adjustment methods of welding are as follows: under the condition of a certain current, the voltage and wire feeding speed should be reversed;

In welding, when the welding current is constant, the faster the wire feeding speed, the smaller the welding depth; The current is large, the voltage is small, and the top wire will be raised; When the current increases, the penetration depth increases, but the width will also increase.

The first step is to adjust the current knob to the minimum, adjust the voltage knob to the maximum, test welding, do not move the voltage knob at this time, gradually increase the current, and stop it until it can be welded normally; The second step, in turn, is to adjust the current knob to the maximum first, and then adjust the voltage knob to the minimum, test welding, do not move the current knob, gradually increase the voltage, until it can be welded normally and stop; I believe that after such debugging, you should already feel the effect of current and voltage. The third step is to minimize the current and voltage knobs, and gradually increase the voltage and current (you need to adjust it repeatedly in the process) until you find the match that you think is the best weld formed, the softest sound, and you can control it yourself. At this point, congratulations, you've found a way.

You can adjust the current and voltage corresponding to various welding positions of vertical welding, flat welding, horizontal welding, and vertical welding.

Adjust the current or voltage first.

Current. The first step is to adjust the current knob to the minimum, adjust the voltage knob to the maximum, test welding, do not move the voltage knob at this time, gradually increase the current, and stop it until it can be welded normally; The second step, in turn, is to adjust the current knob to the maximum first, and then adjust the voltage knob to the minimum, test welding, do not move the current knob, gradually increase the voltage, until it can be welded normally and stop; I believe that after such debugging, you should already feel the effect of current and voltage. The third step is to minimize the current and voltage knobs, and gradually increase the voltage and current (you need to adjust it repeatedly in the process) until you find the match that you think is the best weld formed, the softest sound, and you can control it yourself.

At this point, congratulations, you've found a way. You can adjust the current and voltage corresponding to various welding positions of vertical welding, flat welding, horizontal welding, and vertical welding.

It is still good to use the contact noop.

What is the reason for the plugging of the contact nozzle.

There may be reasons such as backburning caused by mismatch of current and voltage, improper gas flow or blockage of the gas outlet, and the contact tip being worn by the welding wire or splashing into and out of the wire.

Okay, please give it a thumbs up.

The adjustment method of the current and voltage of the second welding machine is as follows:According to the relationship between the stability of the welding process and the matching of the specification, under the premise of ensuring that the peripheral system (wire feeding, conductivity) is good:

1) When i<200a, u=(14+2) When I >200A (especially with extended wire), the voltage is slightly higher U=(16+

The second protection welding machine is the abbreviation, the full name is carbon dioxide protection welding machine.

The second welding machine is composed of transformers, control circuit boards, switches, frames, etc., as well as auxiliary equipment such as carbon dioxide cylinders, wire racks, and wire feeders. **The transformer of the second welding machine, due to the large welding current, generally has hundreds of amperes, so its wire is very thick, most of them are copper coils, and there are also aluminum coils.

The current regulation voltage of the second welding is actually very simple: the current size is to adjust the melting speed of the welding wire, and the voltage is to adjust the speed of the automatic welding wire. Generally, the current is between 200-250 and the voltage is between 21-26.

In fact, there is a trick, that is: when the current is large, the welding wire melts too quickly, and it feels like the welding wire is not enough, and it is about to burn to the nozzle, and there is a feeling that the wind blows the candle and is erratic!

P.S. When the current is high, there is a lot of spatter, of course, it is impossible to have no spatter at all. ）

When the voltage is high, it feels like the welding wire is sent out too quickly, and it has come out before it has time to melt, and then there is a feeling that the welding wire is always the top base metal.

The relationship between the stability of the welding process and the matching of specifications On the premise of ensuring that the peripheral system (wire feeding, conductivity) is good, it is recommended that: When i<200A, u=(14+ i>200A) (especially with extended wire), the voltage is slightly higher u=(16+

Key Features of Best Welding Practices:

a.The weld is well formed.

b.The welding process is stable and the spatter is small.

c.The sound of sand 、、、 is heard while welding.

d.When welding, I saw that the pointer of the ammeter and voltmeter of the welding machine was stable and the swing was small.

Adjustment Steps for Best Welding Practices:

a.According to the thickness of the workpiece, the position of the weld, the diameter of the welding wire, the gas flow, and the welding current are selected.

b.Test welding on the test board, according to the selected welding current, carefully adjust the welding voltage and arc thrust, the best welding voltage is generally between 1 2V.

c.According to the forming of the weld on the test board, the welding current, welding voltage and gas flow are appropriately adjusted to achieve the best welding specifications.

d.In the formal welding process on the workpiece, attention should be paid to the welding circuit, the voltage drop caused by the contact resistance, and the welding voltage should be adjusted (fine-tuned) in time to ensure the stability of the welding process (for the case of large workpieces).

The current and voltage adjustment of the second welding is as follows:

First of all, the hand should be steady, that is, the hand must have the strength to control the welding gun. Breathe carefully, the chest expands and contracts when breathing, which will drive the arm to move, and it is also unstable during welding. To practice breathing, keep your fingers in a position and breathe carefully, and use your will to control your hands not to move or your fingers to walk in a straight line.

Welding materials: 1. CO2 gas purity requirements; The water content of the friction does not exceed; The carbon content does not exceed.

2. Copper plating on the surface of the welding wire is not allowed to have rust spots.

1. Before welding, the joint cleaning requires that the burrs, oil, rust, and oxide scale that affect the quality of the weld within 30mm on both sides of the groove must be cleaned.

2. When the construction environment temperature is lower than zero or the carbon equivalent of the steel is greater than that, and the structural rigidity is too large, and the object is thicker, preheating measures should be used before welding, the preheating temperature is 80 100, and the preheating range is 5 times the thickness of the plate, but not less than 100mm.

3. When the thickness of the workpiece is greater than 6mm, in order to ensure the welding penetration strength, the butt edge of the plate should be cut V-shaped or X-shaped, the groove angle is 60°, the blunt edge p is 0 1mm, and the assembly clearance B is 0 1mm; When the thickness difference is 4mm, the butt edge of the thicker plate should be skewed.

Hello, the current and voltage adjustment method of the second welding is as follows: when the welding current is constant, the faster the wire feeding speed, the smaller the welding depth, and the larger the welding voltage, the smaller the welding depth; In the case of a certain current, the voltage and wire feeding speed should be adjusted in the opposite direction. If the wire is ; The voltage is 18V, the wire feeding speed is 60cm min, and the general adjustment machine only moves the voltage.

According to the relationship between the stability of the welding process and the specifications, on the premise of ensuring that the peripheral system (wire feeding, conduction) is good: 1. When I < 200A, U I) When I > 200A (especially when using extension cables), the voltage is slightly higher U I) 2V.