What is the problem that the welding king MS 160C argon arc welding machine has no high frequency?

MS-160C does not stand for welding machine, it is: WS-160C.

W: (tungsten) pole argon arc welding, S: (hand) welding, 160: welder rated output welding current (160) amps. c The manufacturer code of the welding machine has no practical significance.

This welding machine belongs to the tungsten argon arc welding electrode hand arc welding dual-purpose machine with a rated welding current of 160 amps.

The reasons for the absence of high frequencies are as follows:

1: High-frequency version aging.

Tungsten argon arc welding high-frequency plate is a vulnerable part, tungsten argon arc welding high-frequency plate must be high-frequency discharge every time the arc is initiated, and the high-frequency plate is replaced with a new high-frequency version of the same model when aging.

2: The gap between the discharge electrodes of the high-frequency plate is wrong; or the interstitial burn loss and oxidation are serious.

The gap between high-frequency electrodes is ablated by discharge, and the electrode gap needs to be adjusted periodically. Too much gap, too weak high frequencies will result in no high frequencies.

If the electrode discharge contact is burned, polish the ablation part of the electrode with fine sandpaper, and readjust the gap to install it.

There is no doubt that the welding machine is faulty, if the surface requirements of your workpiece are not strict, the welding machine can also produce current, and it can also be used without high-frequency arc starting, you can try it according to the following methods:

Before the arc, the tungsten electrode is firmly in contact with the workpiece, and then press the welding torch switch, gently lift the welding torch to ignite the arc, if this does not work, you can also press and hold the welding torch switch to directly scratch on the surface of the workpiece, which is called contact arc initiation, because the design of each welding machine is a little different, the welding machine of the welding king may not be suitable for scratching the arc, but you may wish to try, so as not to delay your work.

The high-frequency arc striking device of your welding machine is broken, contact the welding machine dealer for repair as soon as possible.

Argon welders do not have high frequencies. Generally, there is a problem with the high-frequency board. Generally, the high-frequency power supply is unplugged first.

Press the gun. Measure if there is an output voltage. Generally, it is about 50V direct current.

If there is an output voltage, then it is determined that it is a problem with the high-frequency board. High-frequency boards generally have problems with high-frequency capacitors and high-frequency resistors. There is also whether the relay on the high-frequency board controls the high-frequency whether there is power supply.

There is no suction normal. If there is no output voltage. Then the problem with the machine is whether there is a drive MOS tube or not.

Or the main power is not normal.

There are many kinds of problems caused by not having high frequencies:

1. The high-frequency line breaks off and falls off. (Check the line, connect the broken line) 2, the high-frequency power supply is damaged. (Check the high-frequency capacitance part and measure whether there is a power supply to the power amplifier board, which is generally 100 direct current.)

If not, replace the high-frequency capacitor, rectifier bridge, or connect the detachment line).

3. The high-frequency control part is damaged, (and it is divided into 1: the control card part is damaged, and the control card has no high-frequency control signal output.) 2：

The oscillating plate is damaged, the oscillating plate does not vibrate, and no signal is output to the power amplifier part. 3: The power amplifier board is damaged, and the above two parts are intact and the power amplifier input signal is normal, it can be determined that the power amplifier board is damaged.

The method of disposal is to replace the damaged part).

4. The high-frequency on/off of some systems or machine tools is controlled by the relay, check whether the relay is damaged. ‍

Press the handle switch to see if there is action, whether the high-frequency discharge is normal, and whether the outlet pressure of the valve is normal.

If the mains power supply is working properly, there is a problem with the high-frequency part.

Check the thyristor and rectifier diode, output capacitor, pre-500VDC loop and choke coil outside the motherboard. Of course, the motherboard will carefully check the sampling loop, trigger loop, etc.

The power of electric welding is a problem with high-frequency lines.

The high-frequency circuit is faulty. Are you **? I'm a welding machine maintenance engineer.

Which brand, in general, there are. It's just that some are internally regulated.

Argon arc welding priming, electrode arc welding CO2 cover surface, referred to as argon electric 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.

Extended information: The working principle of argon arc welding in the main circuit, auxiliary power supply, drive circuit, protection circuit, etc. is the same as that of hand arc welding. I will not go into more detail here, but focus on the unique control function and arc starting circuit function of argon arc welding machine.

The reason why TIG welding can be so widely used is mainly because of the following advantages.

1. Argon protection can isolate the adverse effects of oxygen, nitrogen, hydrogen and other gases in the air on the arc and molten pool, reduce the burning loss of alloying elements, and obtain dense, spatter-free and high-quality welded joints;

2. The arc of argon arc welding is stable, the heat is concentrated, the arc column temperature is high, the welding production efficiency is high, the heat affected zone is narrow, and the weldment stress, deformation and crack tendency of the weldment are small;

3. Argon arc welding is open arc welding, which is convenient for operation and observation;

4. The electrode loss is small, the arc length is easy to maintain, and there is no flux and coating layer during welding, so it is easy to realize mechanization and automation;

5. TIG welding can weld almost all metals, especially some refractory metals and easily oxidized metals, such as magnesium, titanium, molybdenum, zirconium, aluminum, etc. and their alloys;

6. It is not limited by the position of the weldment, and can be welded in all positions.

Check the high-frequency part, the high-frequency board,. The main thing is that high-voltage capacitors are relatively easy to break.

Chapter 39: The village grandmother is open-mouthed, and the love brother is looking for the bottom line.

TIG welding has sound, but it cannot be welded for two reasons:

First, the arc controller is short-circuited internally. Most of the causes are caused by the adhesion of impurities, dust, and metal particles. For sites with serious welding pollution, it is recommended to clean them with compressed air twice a month.

Second, the quality of tungsten electrode is lacking, coupled with the eccentricity of the grinding needle tip, which can easily lead to difficulty in arc starting.

It may be that the water-cooled cable of the welding torch is broken due to aging.

1.Welding torch damage 2Whether the ground wire is connected or not.

1.Press the handle switch to see if argon is discharged, if not, it may be that the switch is broken or the wire is broken!

2.If there is gas discharge, it is a fault of the internal high-voltage arc striking circuit of the welding machine!

3.The contact arc initiation you mentioned is the DC low-voltage electricity of the normal welding machine after a few seconds of arc initiation, and there is no high voltage before this, and the argon gas cannot be broken down and the arc is initiated!

It may be that the capacitor capacity of the ignition plate is not enough, so change the capacitor.