How much current and gas volume is required to weld stainless steel by TIG welding

TIG welding. The amount of gas required for welding stainless steel: the welding current of argon arc welding is usually selected according to the material, thickness and spatial position of the joint, and the gas flow range of the general gas back inflation protection is.

The current required for argon arc welding to weld stainless steel: the general welding current of stainless steel welding is about 60, and the welding current is the key factor that determines the formation of the weld.

TIG welding is a welding technology that uses argon as a shielding gas. [1] Also known as argon gas shielded welding.

It's arc welding.

argon shielding gas is used around the area to isolate the air from the welding area and prevent oxidation in the welding area.

Argon arc welding technology is based on the principle of ordinary arc welding, the use of argon to protect the metal welding consumables, through high current to make the welding consumables melt into a liquid state on the welded substrate to form a molten pool, so that the welded metal and the welding consumables to achieve metallurgical combination of a welding technology, because of the continuous delivery of argon in the high temperature melt welding, so that the welding consumables can not contact with the oxygen in the air, thereby preventing the oxidation of the welding consumables, so that stainless steel, iron hardware metals can be welded.

TIG welding is GTAW.

Generally, the tungsten electrode specification is cerium tungsten electrode, and the current is controlled between 80 and 140, which is determined according to the plate thickness or wall thickness.

If welding thin steel sheets, 40 60 currents are enough.

Gas is generally said to be the flow rate, rarely talk about the pressure, the flow rate is generally 10 15l min.

The basic skills of the welding method of argon arc welding should be the basic skills of gas welding, the practice of gas welding is good, and the argon arc welding is fast, which is why people with a foundation in gas welding choose a powerful business when buying a machine, that is, a business that can provide guidance on the use of the machine, and you can use it under the guidance of the business when you buy it.

Non-melting electrode argon arc welding is the arc between the non-melting electrode (usually tungsten electrode) and the workpiece, and a kind of inert gas (argon gas commonly used) that does not react with the metal flows around the welding arc to form a protective gas hood, so that the tungsten terminal, the arc and the melt pool and the high-temperature metal adjacent to the heat-affected zone are not in contact with the air, which can prevent oxidation and absorb harmful gases. The result is a dense welded joint with very good mechanical properties.

The current regulation of TIG welding is shown in the following table:

TIG welding is a welding technology that uses argon as a shielding gas. It is also known as argon gas shielded welding. It is to pass argon shielding gas around the arc welding to isolate the air from the welding area and prevent oxidation in the welding area.

Argon arc welding technology is based on the principle of ordinary arc welding, the use of argon to protect the metal welding consumables, through high current to make the welding consumables melt into a liquid state on the welded substrate to form a molten pool, so that the welded metal and the welding consumables to achieve metallurgical combination of a welding technology, because of the continuous delivery of argon in the high temperature melt welding, so that the welding consumables can not contact with the oxygen in the air, thereby preventing the oxidation of the welding consumables, so that stainless steel, iron hardware metals can be welded.

(1) The working principle and characteristics of the non-melting electrode:

Non-melting electrode argon arc welding is the arc between the non-melting electrode (usually tungsten electrode) and the workpiece, and a kind of inert gas (argon gas commonly used) that does not react with the metal flows around the welding arc to form a protective gas hood, so that the tungsten terminal, the arc and the melt pool and the high-temperature metal adjacent to the heat-affected zone are not in contact with the air, which can prevent oxidation and absorb harmful gases. The result is a dense welded joint with very good mechanical properties.

2) The working principle and characteristics of the melting electrode:

The welding wire is fed through the wire wheel, and the contact tip conducts electricity, which generates an arc between the base metal and the welding wire, melts the welding wire and the base metal, and uses inert gas argon to protect the arc and molten metal for welding. The difference between it and tungsten argon arc welding is, one is the welding wire as the electrode, and is continuously melted and filled into the molten pool, and the weld is formed after condensation, and the other is the use of shielding gas, with the application of the technology of melting pole argon arc welding, the shielding gas has developed from a single argon gas to a variety of mixed gases are widely used, such as argon or helium as the shielding gas, which is called molten inert gas shielded arc welding (referred to as MIG welding in the world), and the mixture of inert gas and oxidizing gas (O2, CO2) is used as the shielding gas. or CO2 gas or CO2+O2 mixture gas as shielding gas, it is collectively referred to as MIG/MAG welding (internationally referred to as MAG welding). From the perspective of its operation mode, the most widely used at present is semi-automatic melting pole argon arc welding and argon-rich mixed gas shielded welding, followed by automatic melting pole argon arc welding.

Summary. Hello kiss happy to answer for you, kiss the wire 1 mm.

The current is between 60-90, depending on your proficiency level.

The technique of welding is that the wire follows the arc and swings slightly. Welding parameters: manual welding:

Tungsten electrode diameter 2mm, welding wire diameter, welding current 7 28A, argon flow rate 3 4L min; Automatic welding: tungsten electrode diameter, wire diameter, welding current 50 80A, argon flow rate 5L min.

Usually butt welding below 4mm, can use the I-joint without groove on one side of the weld, when the assembly gap is zero, there is no need to fill the wire, otherwise it is necessary to fill the wire or use the crimp joint, the latter is especially suitable for the following thin plates. 4 6mm butt weld can be double-sided welding of non-beveled I-joints. I hope mine can help you.

Have a great day

I use argon arc welding to weld 1mm thick stainless steel Choose what diameter of the electrode and how much current is more appropriate to solve. Have rich welding experience...

Hello kiss hello I am happy to answer for you, kiss the welding wire 1 mm current between 60-90 to see your proficiency to choose the welding technique is the wire with the arc, slightly with swing. Welding parameters: manual welding:

Tungsten electrode diameter 2mm, welding wire diameter, welding current 7 28A, argon flow rate 3 4L min; Automatic welding: tungsten electrode diameter, wire diameter, welding current 50 80A, argon flow rate 5L min. Usually butt welding below 4mm, can use the I-joint without groove on one side of the weld, when the assembly gap is zero, there is no need to fill the wire, otherwise it is necessary to fill the wire or use the crimp joint, the latter is especially suitable for the following thin plates.

4 6mm butt weld can be double-sided welding of non-beveled I-joints. I hope mine can help you. Have a great day

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The current control of TIG welding is between 200-250.

The welding wire is selected above the diameter specification, and the short welding and long welding are selected according to their own requirements, the pulse is easier to use, and the gas delay time is negligible, because the welding machine has a gas delay time of about 30 microseconds or more.

TIG welding current regulation techniques.

The size of the welding current is mainly selected according to the thickness of the weldment, the type of joint, the welding position, and the type and diameter of the welding rod. In vertical welding, horizontal welding, and vertical welding, the welding current is 10% or 20% smaller than the flat welding current. Stainless steel electrode and alloy steel electrode have high thermal expansion coefficient due to high resistance, and when the welding current is large, the electrode will fall off due to redness, which will affect the welding quality.

In welding, the welding current should be reduced accordingly.

Welding current is the main factor affecting the quality and productivity of welded joints. The current is too large, the metal melts quickly, the penetration depth is large, the metal splash is large, and at the same time, it is easy to produce defects such as burn-through and undercut; If the current is too small, it is easy to produce defects such as unwelded penetration and slag inclusion, and the productivity is low. When determining the welding current, factors such as the diameter of the electrode, the thickness of the weldment, the type of joint, the position of the weld, etc., should be considered, the main of which is the diameter of the electrode.

As if it is next to a liquid, the thin electrode selects a small current, and the coarse electrode selects a large current.

Non-melting electrode argon arc welding is the arc between the non-melting electrode (usually tungsten electrode) and the workpiece burning, in the oak welding arc flow around a kind of inert gas that does not react with the metal (argon gas is commonly used), forming a protective gas cover, so that the tungsten terminal, the arc and the molten pool and the adjacent heat affected zone of the high-temperature metal do not contact with the air, can prevent oxidation and absorb harmful gases. The result is a dense welded joint with very good mechanical properties. <>

The kind of no-load with Tanqiao welding rod is about 50-75 volts, about 30 volts when welding, 14---18 volts when argon arc welding is used, and about 18---30 volts when CO2 protective welding work, and the welding current is different and the voltage is different, which is related to the design of the welding machine.

For 1mm stainless steel, the current should be controlled below 80A, and the welding wire is generally used.

The length of the tungsten electrode protruding from the gas nozzle for argon arc welding is 4 5mm, 2 3mm in the fillet welding and other places with poor shading, and 5 6mm in the deep slotting places, and the distance from the nozzle to the working is generally not more than 15mm. In order to prevent the appearance of welding pores, the welding parts must be cleaned if there is rust and oil stains.

When welding arc length, when welding ordinary steel, it is better to use 2 4mm, and when welding stainless steel, it is better to use 1 3mm, and if it is too long, the protection effect is not good. In order to prevent oxidation of the backside of the bottom weld bead, gas protection is also required on the backside of the bottom weld bead during butt priming.

Summary. Hello, TIG welding current regulation skills : current regulation:

Adjust the welding current to the required current according to the plate thickness and welding position. Base current: The starting current at the time of welding.

I have never used this kind of welding machine, I don't know if the understanding is correct) In operation, the current of the welding machine during arc initiation is less than the current during normal welding, such as current adjustment of 120 amperes, base value current (starting current) adjustment of 40 amperes, and the current of 1 to 2 seconds of arc initiation (some welding machine speed adjustment time) is 40 amperes, and then rises to 120 aFirst, it plays the role of "lighting", which is convenient for observing the starting point of welding, some important materials, and there is no arc abrasion in the non-weld area. Sheet start, and so on.

Delay adjustment: At the end of welding, after the arc is extinguished, the black pole and arc pit are in a red hot state, and if there is no argon protection, the arc pit and the black pole will be oxidized. The length of cooling time depends on the welding current and material used.

Generally, it is s (seconds) = current 10

Hello, TIG welding current regulation skills: Current regulation: adjust the welding current, according to the plate thickness, welding position, adjust to the required current.

Base value of the high current: the initial current during welding. (I haven't used this welding machine, I don't know if the understanding is correct) in operation, the current of the welding machine arc is less than the source flow of the electric wheel during normal welding, such as current adjustment of 120 amperes, base current (starting current) adjustment of 40 amperes, in the arc of 1 to 2 seconds (some welding machine speed adjustment time) current of 40 amps, and then rise to 120 a

First, it plays the role of "lighting", which is convenient for observing the starting point of welding, some important materials, and there is no arc abrasion in the non-weld area. Sheet start, and so on. Delay Adjustment:

At the end of welding, after the arc is extinguished, both the black pole and the arc pit are in a red hot state, and if there is no argon protection, the arc pit and the black pole will be oxidized. The length of cooling time depends on the welding current and material used. Generally, it is s (seconds) = current 10

Pipes, argon arc welding priming, can you use carbon dioxide to protect the welding cover surface?

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