Second, how to adjust the current and air pressure for the welding of thin plate materials

This depends on your manual operation, and the welding techniques are different in various places, and the current is of course different.

There are two categories. One is to weld the black needle out of the tip of half a centimeter from the mouth, the advantage is that the eyes are easy to see, the weld pool is relatively small, some places are very practical, and easy to learn, but the most unbearable thing is that the smell of welding is heavier, easy to stab the face and eyes, and the harm to the body has a certain impact, his arc light is 8-10 times that of electric welding (if memory serves). The second is that the black needle is in the mouth, operate with a sunglasses, the eyes are far away from the spot welding for a day do not feel tired, people are very relaxed (especially when there is a little wind), gas protection is stronger than the first one, the welding of high proficiency is also very beautiful, more efficient than the first welding method, in addition to a little difficult to learn for novices, there are some corners that are not suitable for accidents and can not find shortcomings, but burning welding is not very suitable.

As for the current, if it is the first category.

Spot welding can reach 80-200 (the difference is very large.)

Individual operating habits).

Sintering welding 10-30

The second type of current is 45-55

Nor can this be used as a criterion entirely.

It depends on the actual situation.

It's already thin.

Experiment with your scrap.

As long as the welding wire can form a molten pool, it is fine.

The meaning can be as small as it can be.

You've come to ask.

It shows that you are very studious.

Very good. Be sure to take care of your eyes.

Eyes accompany you for a lifetime.

He can't be healed like any other organ.

Or it will get better if it is repaired.

No, it won't. None of this is a problem.

I usually learn how to adjust by watching how the masters adjust.

See more. Think more.

More hands-on.

Draw experience. Everything is not too much of a problem.

The airflow you're talking about is very simple.

Generally, it is enough to feel the gas flowing out with your hands.

That is, it can blow the floating ash on the ground.

There are very few exceptions.

The air pressure does not need to be adjusted, the current and voltage are adjusted a little smaller, and the base metal is not welded through.

Second, the welding and vertical welding techniques and skills and current regulation are:When welding, a smaller diameter electrode and a smaller welding current should be selected, so that the molten pool is small in size, cools and solidifies quickly, and can reduce and prevent the molten metal from flowing down. Short arc welding is adopted, the arc length is not greater than the diameter of the welding rod, the arc blowing force is used to support the molten pool, and the short arc operation is conducive to the transition of molten droplets.

The working angle of the electrode is 90°, and the forward tilt angle is -10 -30°, that is, the electrode is inclined in the opposite direction of the welding direction to prevent the molten metal from flowing down.

Vertical welding is the angle of the electrode 60 to 80 degrees, from the bottom of the arc from the bottom of the weld to the direction of the direction of welding, in the welding process of the electrode left stone uniform swing, at both ends to pause a little to achieve the base metal and the molten iron fully fused. Since the molten pool is very easy to flow under the action of gravity, the key to mastering vertical welding is to choose the right welding parameters and the correct operation method.

During vertical welding, the molten pool metal and molten droplets have a tendency to fall due to gravity and are separated from the weldment, so it is easy to produce welding nodules. However, due to the low melting point and strong fluidity of the slag, the molten pool metal and the slag are easy to separate, and it is not easy to produce slag inclusions. However, due to the fact that the molten pool is partially separated from the protection of the slag, it is easy to generate porosity if the operation or the angle of the transport bar is improper.

Solid core welding wire vertical welding adopts short-circuit transition to call out the "zizi" sound.

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 a lot of 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 torch is too soft, there is almost no vibration, you can move the welding torch 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 melt 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, and the voltmeter.

Swing no more than 5V, ammeter.

The swing should not exceed 30a, and there should be no vibration in 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.

Hello dear, it's a pleasure to serve you!For the second welded aluminum material, the adjustment of current and voltage and the plate thickness comparison table are important references. Here are some general considerations and recommendations:

1.Current and voltage regulation: When welding aluminum, a high current density is required to ensure the quality of the weld due to the high thermal conductivity of aluminum.

In general, the recommended current density is 200-250A mm². The voltage is adjusted according to the characteristics of the specific welding equipment and the thickness of the imitation material. In actual operation, it can be fine-tuned according to the results of the test welding to ensure the quality and stability of the weld.

Please note that this is only a general reference and should be adjusted according to the actual situation and equipment requirements. -1-3 mm: current 200-250A, voltage 18-20V - 3-6 mm:

Current 250-300A, Voltage 20-22V - 6-10 mm: Current 300-350A, Voltage 22-24V - 10-15 mm: Current 350-400A, Voltage 24-26V3

Precautions: - Ensure the proper operation and maintenance of welding equipment and tools. - Before welding, the surface of the aluminum should be cleaned and deoxidized to improve the quality of the weld.

Use suitable welding consumables and shielding gases, such as pure argon or argon gas mixtures, to protect the welding area from contamination by oxygen and water vapor. -Control the welding speed and avoid being too fast or too slow to ensure the fullness and quality of the weld. -For larger plate thicknesses, multi-pass welding can be employed to obtain better weld quality.

Please note that the above is only a general recommendation and reference, and the actual welding parameters and precautions may vary depending on factors such as specific welding equipment, aluminum quality, and welding requirements. It is recommended that you follow the instructions of the equipment and material manufacturer in the actual operation and follow the welding safety regulations.

Each brand is different, the current is between 80 and 120, and the voltage is about 20, mainly depending on the flow of molten iron, and the flow is solidified and formed.

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.

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 of the plate is 4 mm, the butt edge of the thicker plate should be skewed.

Summary. Step 1: Determine the welding current:

1. According to the characteristics of the welding material, adjust the welding current, generally based on the characteristics of the semiconductor welding material, and the welding current of different materials will be very different; 2. The welding current should be kept in the best position to improve the welding effect; 3. The welding current should be stable and try to avoid current fluctuations. Step 2: Determine the welding voltage according to the welding position:

1. For the welding of the clamping piece, the welding voltage should be adjusted to the lowest to avoid burning the welding position. 2. For the welding of plug-ins, the welding voltage should be adjusted to the highest to ensure the welding effect. 3. For the welding of through holes, the welding voltage should be adjusted to the middle to ensure the welding effect.

Step 3: Determine the welding time according to the welding current and voltage: 1. Determine the welding time according to the welding current and voltage to ensure the welding effect;2. The welding time should be controlled within the set range to avoid damage to the welding material3. If the welding time is too long, the welding point may be damaged, which will affect the welding effect.

Step 1: Determine the welding current: 1. Adjust the welding current according to the characteristics of the welding material, generally based on the characteristics of the semiconductor welding material, and the welding current of different materials will be very different;2. The welding current should be kept in the best position to improve the welding effect; 3. The welding current should be stable and try to avoid current fluctuations.

Step 2: Determine the welding voltage according to the welding position: 1. For the welding of the clamping piece, the welding voltage should be adjusted to the lowest level to avoid burning the welding position.

2. For the welding of the cherry spring parts, the welding voltage should be adjusted to the highest to ensure the welding effect. 3. For the welding of through holes, the welding voltage should be adjusted to the middle to ensure the welding effect. Step 3:

Determine the welding time according to the welding current and voltage: 1. Determine the welding time according to the welding current and the electric stamping to ensure the welding effect;2. The welding time should be controlled within the set range to avoid damage to the welding material3. If the welding time is too long, the welding point may be damaged, which will affect the welding effect.

Hello. After the welding is completed, if you want to drill, you should do a good job of drilling design in advance to ensure that the thermal influence range of the welding part and the surrounding area will not affect the rigidity of the drilling orifice.

Is the current a little bigger or the voltage a little bigger.

When the welding thickness is large, the current adjustment range is small, and it may be necessary to adjust the fibrillation and voltage to obtain the welding quality of Zhengchang Xiaozhen. In general, voltage adjustment can make the weld pool deeper and the weld seam wider, resulting in a rigid weld joint. However, the adjustment range of the voltage should not be too large, otherwise it may affect the welding quality.