How to adjust the voltage and current of the gas shielded welding machine?

The voltage and current adjustment of the gas shielded welding machine is as follows:

1. The oxygen welding machine is made through carbon dioxide.

Gas to protect the dissolved pool, prevent air from entering the dissolved pool to produce pores. Therefore, to adjust its current and voltage, the general machine is adjusted separately, before we said: the current is generally mainly the speed of the wire, and the role of the voltage is to turn the wire.

Therefore, when the voltage is low, the welding wire cannot be turned into a top wire, the spatter is very large, and the forming is ugly, and the weld is very high and sharp; The voltage is high, the speed of filament is fast, the voltage is too large, the molding is very bad, and the solution pool is easy to be paralyzed, not bright and not full.

2. When you don't know the size of the current and voltage, you can fix one to adjust the other one, you can first fix the current and adjust the voltage, first adjust it to a small size, because if the voltage is not well mastered, it is easy to burn off the contact nozzle mouth, and if the splash is extraordinarily large, it will be adjusted to a large one.

3. You can also keep the voltage and line current, if the splash is very large in the major key, you can also adjust the voltage to the minor key. If the wire is reburned in a minor adjustment, the voltage can be reduced by adjusting it to a major adjustment.

Application of gas shielded welding machine:

1. In the shipbuilding industry, it is also necessary to use the gas shielded welding machine, which is more important in the process of using the gas shielded welding machine, and often pays more attention to the service life of the gas shielded welding machine in the process of its use.

2. Now in the automotive industry, it is more necessary to use the gas shielded welding machine, and in the process of using it, it is often more able to pay attention to the quality of the gas shielded welding machine, and it is also more necessary to use it in the operation process of the automobile industry for the development of the gas shielded welding machine, because now many industries are very much in need of the gas shielded welding machine, and in the process of using it, it is often more noticeable to the safety performance of the gas shielded welding machine, as long as it has a certain safety performance.

How to regulate the current of gas shielded welding, and the techniques and skills of iron plate lap transport.

Novices can't adjust the matching of current and voltage, the main reason is that they don't know the relationship between the two, and they don't know what role they play.

The current is to control the penetration depth of the weld (the current can also be understood as the wire feeding speed, the larger the current, the more welding wire is sent out per unit time under the condition that the voltage is unchanged, provided that the voltage is enough to melt the welding wire), and the voltage is to control the melting width.

Now that I know what each of these two does, I'll say a dumber but most effective solution:

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.

Specific phenomena and causes.

1) The voltage is low, the right hand holding the gun will feel the stiffness of the head of the welding gun, the strong vibration of the head of the welding gun, the sound of bursting can be heard, there is resistance to moving the welding gun, observe through the mask, the welding wire is inserted into the molten pool, and there is more splashing.

Tips] This is because the voltage is too low, the wire feeding speed is much greater than the melting speed, and the sound made when the arc ignites and is extinguished by the welding wire.

2) The voltage is high, the head of the welding gun is too soft, there is almost no vibration, you can move the welding gun as you like, observe through the mask, the welding wire floats above the molten pool, and the end forms a large molten ball, and sometimes there is a large molten droplet splash.

Tips] If the melting speed exceeds the wire feeding speed too much, the arc will be burned all the way to the contact tip, the welding wire and the contact tip will be melted together, the wire feeding will be terminated, and the arc will be extinguished. This can cause damage to both the contact tip and the wire feeding mechanism, so make sure that the voltage is not too high when arcing.

3) The phenomenon when the voltage and current are matched: the arc burns steadily, emits a fine sizzling sound, the head of the welding torch vibrates slightly, the softness and hardness are moderate, the voltmeter swing does not exceed 5V, the ammeter swings no more than 30A, and there should be no vibration at the grip of the hand.

On-site operation] 1) When adjusting the welding voltage knob, the welding voltage should be slowly increased, the melting speed of the welding wire will be accelerated, and the crackling sound of bursting will gradually become a smooth sizzling sound;

2) Observe the voltmeter and ammeter, if the current is lower than the predetermined value, first increase the welding current, and then increase the welding voltage; If the current is higher than the predetermined value, the welding voltage is lowered first, and then the welding current is reduced. Hope, thank you, thank you!

The current is the speed of the wire, and the voltage is the spatter of the wire.

The voltage and current do not match, the spatter will become smaller when the voltage is larger, but not too large, the degree needs to be mastered by yourself, and the voltage is slightly larger than the current, such as the current of 300. You can adjust the voltage to 32, even if you are given a certain value, the same value of the two welding machines, the effect of welding is not the same, you can first adjust the voltage to the maximum, the current does not move, and then you will know that 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.

If the voltage does not move, adjust the current to the maximum, and find that the wire is fed quickly, and the wire may be sent out without melting, and when the current is adjusted to the minimum, it will be found that the wire feed is very slow.

There are generally two kinds of gas shielded welding machines: integrated and split, such as current and voltage knobs, do you want to find the current and voltage adjustment ratio after welding? The current is to control the wire feeding speed, and the voltage is the burning speed of the welding wire.

If the voltage is too large, the solution depth becomes shallow, the width increases, the residual height decreases, and the welding toe is smooth! If the current is large, it is the opposite, and the general current is well integrated, and in the case of small splashing, try to use a large current.

CO2 gas shielded welding current voltage regulation When the current is less than 300A, the welding voltage = (welding current 16) For example; The current you choose is 200A. Calculation method: welding voltage (0,04 200+16) 1,5=24 1,5(v). When the current is greater than 300A.

Welding voltage = (welding current 20).

How to adjust the current and voltage of carbon dioxide gas shielded welding: The oxygen welding machine is a kind of welding machine that protects the dissolved pool by carbon dioxide gas and prevents air from entering the dissolved pool and generating pores.

Zero-based teaching of gas shielded welding, how much air pressure is adjusted, how much current is adjusted......

As follows:

1. Adjust the current knob to the minimum, adjust the voltage knob to the maximum, try to weld, adjust the voltage to the maximum and do not move, and gradually increase the current until it can be welded normally.

2. On the contrary, adjust the current to the maximum, adjust the voltage to the minimum, try to weld, do not move the maximum current, and gradually increase the voltage until it can be welded normally.

Introduce. Gas shielded welding refers to the welding method of carbon dioxide or argon protection, without the use of welding rod and welding wire. CO2 welding efficiency is high, and argon shielded welding mainly welds aluminum, titanium, stainless steel and other materials.

Submerged arc welding is welding with welding wire and flux protection. The flux buries the arc like sand. It is mainly used for welding thick plates. The hazard of gas shielded welding is that arc and dust have a great impact on the health of welders.