I learned TIG welding for the first time, how to learn TIG welding for novices

Learn welding requirements and precautions:

The high-voltage arc generated during the short circuit melts the solder on the electrode, so the electric welding will produce arc light, which hurts the eyes, so do not directly look at the arc light with your eyes when burning the electric weld; The second is to protect your hands, not to be hurt by flying sparks, and remember to wear gloves.

Learn the requirements and precautions for TIG welding

The current density of argon arc welding is large, the light emitted is relatively strong, the ultraviolet radiation produced by its arc is about 5 30 times that of ordinary electrode arc welding, and the infrared rays are about 1 times that of electrode arc welding, and the ozone content produced during welding is higher, therefore, try to choose a place with air circulation for welding, and the protective measures for operating argon arc welding are basically the same as hand arc welding. In the work, it is necessary to combine work and rest, pay attention to exercise, and participate in more physical activities, because welders belong to special operations, and the degree of harm in the work is relatively higher than that of other types of work.

This friend, yes! Don't be upset. Did you know that learning technology is actually a step-by-step process, and if you just start learning and blindly ask yourself to do as well as other teachers, it is impossible?

The more you compare yourself to other teachers, the more it will hit your self-confidence, and it won't do you any good. Then from now on, please believe that freezing three feet is not a day's cold, and dripping water through stones is not a day's work. As long as the kung fu is at home, as long as you have worked hard, as long as you are not a fool, I believe that anyone in the world can learn to weld.

In fact, welding is not difficult at all, as long as you grasp the following points, you will be able to get twice the result with half the effort.

1: Master the welding speed - too fast, the melting temperature is not enough, it is easy to cause defects such as non-fusion, poor weld forming; If the welding speed is too slow, the high temperature residence time increases, the width of the heat-affected zone increases, the grain of the welded joint becomes coarse, the mechanical properties decrease, and the deformation of the weldment increases. When welding thinner weldments, it is easy to form burn-through.

2: Welding current - too small will make the arc unstable, resulting in defects such as unpenetrated welding, slag inclusion and poor weld forming. If the welding current is too large, it is easy to produce undercut, weld penetration, increase the deformation of the weldment and the amount of metal spatter, and also change the structure of the welded joint due to overheating.

3: Arc voltage - the arc voltage of electrode arc welding is mainly determined by the arc length: the longer the arc length, the higher the arc voltage, the reduction of the protection effect, easy to produce arc bias, etc. In the welding process, short arc welding should be used as much as possible.

5: Remember that each of the above factors will directly affect the final shape of your weld. You need to compare your own weld defects to determine the main direction you want to study.

The most important thing is to keep your hand steady and not shake, and because the welding rod is getting shorter and shorter, so the hand should have the action of pressing down, this is very important, the force of pressing should be even, keep the length of the arc unchanged, and the welding will be flat.

Come to my factory, there is a master to teach for free, and you can get a good salary.

There's an adaptation stage, don't rush, take your time.

Novices can first learn the basic methods of argon arc welding, let experienced masters teach them by hand, or they can query information online for self-study, and then practice on the spot.

Learn the basic methods of TIG welding:

1. Wire feeding: divided into internal and external wire filling. The outer filler wire can be used for priming and filling, which is to use a larger current, the welding wire head is on the front of the groove, the left hand pinched the welding wire, and constantly sent to the molten pool for welding, and the groove gap is required to be small or no gap.

The advantages are that the current is large and the gap is small, so the production efficiency is high, and the operation skills are easy to master. The disadvantage is that if it is used for priming, the operator cannot see the blunt edge melting and the reverse side residual height, so it is easy to produce unfused and undesirable reverse forming.

2. Welding handle: divided into crank and mop. The crank is to press the nozzle slightly on the weld, and shake the arm sharply to weld.

Its advantage is that the welding nozzle is pressed on the weld, and the welding handle is very stable in the operation process, so the weld is well protected, the appearance is very beautiful, the product qualification rate is high, especially the welding is very convenient, and the color of the very beautiful appearance can be obtained when welding stainless steel. The disadvantage is that it is difficult to learn, and because the arm shakes widely, it is impossible to weld where there are obstacles.

3. Arc initiation: arc initiation device (high-frequency oscillator or high-frequency pulse generator) is generally used, tungsten electrode and weldment do not contact to ignite the arc, contact arc initiation is used when there is no arc initiator (mostly used for construction site installation, especially high-altitude installation), copper or graphite can be placed on the weldment groove to ignite the arc, but this method is more troublesome, less used, generally with a slight stroke of the welding wire, so that the weldment and tungsten electrode are directly short-circuited and quickly disconnected and ignited the arc. The maximum current that a welder can output when welding an arc.

Each time the arc starts, the given voltage is increased for a short time, so that the arc current is larger and the arc is easy to start.

4. Welding: After the arc is ignited, it should be preheated at the place where the weldment starts for 3-5 seconds, and the wire feeding will start after the molten pool is formed. When welding, the angle of the welding wire and the welding gun should be appropriate, and the welding wire should be fed evenly.

The welding torch should move forward smoothly, swing left and right, be slightly slower on both sides and slightly faster in the middle. Pay close attention to the changes in the molten pool, when the molten pool becomes larger, the weld becomes wider or the concave appears, the welding speed should be increased or the welding current should be re-adjusted.

5. Arc retraction: If the direct arc retraction is easy to produce shrinkage holes, if it is a welding torch with an arc initiator, the arc should be intermittently retracted or adjusted to the appropriate arc retraction current to slow arc retraction, if there is no arc reducer welding machine, the arc will be slowly led to the side of the groove, do not produce shrinkage holes, such as shrinkage holes should be polished clean before welding. If the arc is at the joint, the joint should be polished into a bevel first, and then welded forward 10-20mm after the joint is fully melted, and then slowly close the arc, so as not to produce shrinkage holes.

Welding beginners learn to weld, mainly based on learning and practice. To learn welding technology, you can go to Shijiazhuang North School, which is a formal and professional welding school, and its reputation in China is trustworthy.

Now the social development is getting better and better, the technical requirements are getting higher and higher, there are not many professionals engaged in electric welding, but the demand for talents is very large, the salary is high, and the current Shijiazhuang North School. It has opened common welding majors such as electric welding, argon arc welding, argon electric welding, and second guarantee welding, which are not limited to the number of hours, and the employment is also arranged, which is worth recommending! Currently Shijiazhuang North School.

It has opened common welding majors such as electric welding, argon arc welding, argon electric welding, and second guarantee welding, which are not limited to the number of hours, and the employment is also arranged, which is worth recommending!

1. Understand the principle, characteristics and classification of arc welding.

2. Master the preparation and welding methods before argon arc welding.

3. Master the defects and solutions of argon welding in the welding process.

4. It is suitable for basic welding personnel, whose weldments need to be tested non-destructively, and standard weldments with higher internal and external requirements.

To master the pre-welding preparation of TIG welding, it is necessary to learn its principles, characteristics, welding methods, and to be accompanied by personnel with professional welding knowledge.

After the arc is ignited, it is necessary to preheat the place where the weldment starts for 3-5 seconds, and start wire feeding after forming a molten pool. When welding, the angle of the welding wire and the welding gun should be appropriate, and the welding wire should be fed evenly. The welding torch should move forward smoothly, swing left and right, be slightly slower on both sides and slightly faster in the middle.

1.Teaching Purpose: Master the specific requirements of manual tungsten argon arc welding skills such as pre-welding preparation, welding handle, wire feeding, arc initiation, welding and arc retraction.

2.The principle of TIG welding.

3.The definition of argon arc welding is a welding method of gas-electric shielded welding that uses the inert gas argon as a shielding gas.

4.Characteristics of argon arc (1) The weld quality is high, because argon is an inert gas, it does not react chemically with metal, the alloying elements will not be burned, and argon will not melt to the metal.

5.Classification of TIG welding TIG welding can be divided into tungsten TIG welding (non-melting electrode) and melting electrode TIG welding according to the different electrode materials.

Follow the master to learn, if you are regular, you can go to a professional school to study, or self-study, be sure to pay attention to safety and do what you can.

Novices are new to learning the technique of shaking soldering joints, pay attention to holding down. After the line of time, the material can be felt by yourself according to some of the materials, and the welding wire feeding interval plays with melting fusion welding penetration is not rigid. Rusty steel materials are handled gently.

Beginner's tips for getting started with TIG welding.

1. First of all, master the specific requirements of manual tungsten argon arc welding skills such as pre-welding preparation, welding handle, wire feeding, arc initiation, welding and arc retraction.

In addition to going to a professional skills school to study, or go to a factory to find a master to learn.

No matter what welding you are studying, the first important thing is to put the welding helmet on well. Otherwise, your eyes will hurt.

It should be a good grasp of the specific requirements of manual tungsten argon arc welding pre-welding preparation, welding handle, wire feeding, arc initiation, welding, and arc retraction.

Learning argon arc welding is a very popular profession now, and novices only need to follow the master to learn seriously.

The first thing to appreciate is to learn the basic theoretical knowledge, and then in the process of practical operation, some masters will tell you what details to pay attention to in the operation, and then what protection work should be done? In the specific operation, you must pay attention to safety.

To learn technology, there must be a good master. The master led the way through the door. Cultivation depends on the individual.

It's no problem for you to learn argon arc welding from a master, but it's impossible for you to be self-taught on the Internet or in reality.

For a novice who doesn't understand argon arc, it feels like argon arc is very simple. I often think that I can learn it in a few days, ignoring some basic movements.

1 The working principle and characteristics of non-melting pole argon arc welding Non-melting pole argon arc welding is the arc burning between the non-melting electrode (usually tungsten electrode) and the workpiece, and an inert gas (argon gas is often used) that does not react with the metal flows around the welding arc to form a protective gas hood, so that the tungsten terminal head, arc and molten pool and the metal that has been at high temperature are not in contact with the air.

Generally, novices learn argon arc welding, to have a master to teach, first make the adjustment of the current, and then according to the size of your solder joint.

1. Turn on.

1. Turn on the power switch on the front panel so that the power switch is in the "on" position. The power indicator is on. The fan in the machine starts to rotate.

2. The selection switch is divided into argon arc welding and hand welding.

2. Argon arc welding adjustment.

1. Put the switch to the argon welding position.

2. Open the valve of the argon cylinder and adjust the flowmeter to the required flow rate.

3. Turn on the power switch on the panel, the power indicator light will be on, and the fan in the machine will work.

4. Press the handle button of the welding gun, the solenoid valve works, and argon gas output begins.

5. According to the thickness of the workpiece, select the welding current.

6. The distance between the tungsten electrode of the welding torch and the workpiece is 2-4mm, press the button of the welding torch to ignite the arc, and the high-frequency arc discharge sound in the machine disappears immediately.

7. Pulse selection: the lowest end is no pulse, the middle is the medium frequency pulse, and the top is the low frequency pulse.

T 4T selector switch: 2T is ordinary pulse argon arc welding, 4T is full-function welding. Adjust the arc start current, current rise time, welding current, base current, current fall time, arc closing current and rear gas supply time according to the desired welding process.

The tungsten electrode of the welding torch is 2-4mm away from the workpiece. Press the welding torch switch, ignite the arc at this time, release the hand switch, and the current slowly rises to the peak current for normal welding. After the workpiece is welded, press the hand switch again, the current slowly drops to the arc closing current, and after the pit of the solder joint is filled, the hand switch is released, and the welding machine stops working.

9. Attenuation time adjustment: Attenuation time can be from 0 to 10 seconds.

3. Hand welding adjustment.

1. Place the switch in "hand welding".

2. According to the thickness of the workpiece, select the welding current.

3. Thrust current: under welding conditions, adjust the thrust knob according to the need, the thrust knob is used to adjust the welding performance, especially in the range of small current, it can be used with the welding current adjustment knob, which can easily adjust the size of the arc starting current, and is not controlled by the welding current adjustment knob. In this way, in the process of small current welding, a large thrust can be obtained, so as to achieve the effect of simulating a rotary DC welding machine.

Fourth, shut down. 1. Disconnect the main power switch.

2. Disconnect the control button of the meter box.

Master the skills of manual tungsten argon arc welding pre-welding, welding handle, wire feeding, arc initiation, welding, and arc retraction.

1. Understand the principle, characteristics and classification of arc welding.

2. Master the preparation and welding methods before argon arc welding.

3. Master the defects and solutions of argon welding in the welding process.

4. It is suitable for basic welding personnel, whose weldments need to be tested non-destructively, and the internal and external requirements are to stare at the standard weldments with higher requirements.

The operation method of TIG welding:

Argon arc is a kind of operation with both left and right hands at the same time, which is the same as the left hand to draw a circle and the right hand to draw a square in our daily life, so it is recommended to carry out similar training for those who have just begun to learn argon arc welding, which is helpful to learn argon arc welding.