What is magnetic mass for a welding machine? How to make a magnetic mass for welding Magnetic mass Welding cable contact

When working with complex structures, any welder will appreciate all the benefits of magnetic mass. This is a fairly convenient device that allows you to fix it on the parts to be welded without any problems.

As a result of using this alternative to standard crocodiles, it becomes significantly more comfortable.

Magnetic mass for welding.

As a rule, it is supplied with a cable of the clamping version. At first glance, it may seem that the use of such devices is very convenient. After all, they are securely attached to most products, especially when it comes to sheet metal.

Nevertheless, there are often situations when installation of this type of clamp is not possible. Magnetic contact is an excellent replacement for the usual crocodiles. In addition, such a device can be easily attached to any surface.

This device has a number of advantages:

  • the possibility of easy fixing on the surface of the welded product;
  • simple, almost eternal design, the probability of breakage of which is minimal;
  • this device does not burn out, as it can withstand voltage surges;
  • high reliability provided by a large contact area.

The disadvantages include only the inconvenience of connecting to small products, rods and fittings.

Outcome

Magnetic mass is a useful and simple device that makes welding work more comfortable.

This contact is more reliable. It can withstand voltage fluctuations and is more durable due to its simple design.

Often, additional accessories to the welding machine are either of poor quality and break, or they may be absent altogether. Magnetic welding mass is a convenient attachment to the workpieces to be welded and is a good alternative to standard clothespins.

What does such a contact consist of, what positive traits he has and how to make it yourself. More on this later in the article.

Usually, welding machines are equipped with a workpiece cable with a clamp-type holder. At first glance, it is convenient, such a device can be securely attached to almost any surface (sheets, rolled metal and others).

But there are situations when it is not possible to install such a mass on a workpiece, or, even more often, it burns out. The magnetic contact of the welding cable is a good alternative.

What are its advantages over the standard clothespin clip?

  • This is the ability to secure contact to almost any surface without much hassle.
  • The simple design is practically eternal to use, it will not break, since there are no springs and mechanisms.
  • Such a mass perfectly withstands voltage drops and loads, as a result of which it does not burn out.
  • The large contact area ensures a reliable closure.

But this type of contact attachment also has its drawbacks. The main disadvantage is that the magnetic mass for welding will not be well installed on small parts, for example, a bar or reinforcement. The second negative property will be the impossibility of fixing on the parts to be welded made of non-ferrous metals: aluminum, copper and others. Also, over time, the magnet will become contaminated with metal shavings and must be periodically cleaned.

Without taking into account the last two factors, this is a rather convenient device that you can even make with your own hands at no extra cost.

The device itself consists of two parts.

  • Contact. This is the point where the ground cable is attached to the holder.
  • Magnet. It can be of various shapes and sizes.

These two parts are connected by a fastener. The weight of the magnetic mass for welding will depend on the dimensions. For example, a magnetic welding clamp from ESAB weighs about 850 grams.

The main thing in this design is simplicity, due to which the reliability of functioning and uninterrupted operation is ensured.

Self-production

Of course, such fasteners for the welding compound can simply be purchased. Manufacturers who manufacture welding equipment also produce additional fixtures in the form of fasteners. But these are unnecessary financial losses, such a contact can be made on your own.

Making a magnetic contact for your own hands is quite simple. A minimum of tools are required, and parts can be at hand.

  • First, the magnet. This is the main part of the entire device, which will ensure the reliability of the fastening. Most often, you can see homemade products made from a magnet from car speakers.
  • Secondly, two washers for the size of the magnet. If you use a car speaker, then a bolt can be welded onto one of the washers for further assembly.
  • Third, a bolt and nut for clamping the cable.

The assembly of the entire system is carried out in this way:

  1. Washers can be made from sheet metal, by the size of the magnet. If it is a speaker, then it is usually round. Accordingly, the washers should be the same.
  2. At the bottom (the one that will serve as a direct contact), a hole is drilled along the diameter of the bolt head.
  3. The very top of the bolt must be ground down to the thickness of the washer.
  4. Now this structure is welded and cleaned. You should get a piece in the form of a mushroom with a thread leg.
  5. The magnet is put on the bolt, and on top is the second washer.
  6. Now the end of the mass cable is attached to the threaded rod and the whole structure is tightened with a nut.

So from the simplest material, an elementary mass is collected for welding with a magnet. Its smooth operation will be proof of correct assembly. The dimensions of such a contact will depend on the dimensions of the magnet. Prefabricated round masses usually have a diameter of about 50-60 millimeters.

For an experienced welder who knows how the mass works on a welding machine, it will not be difficult to make the required fastener. The most primitive contact can be a piece of a bar fixed to the cable, which is fixed to the workpiece with a pair of welding points. But, of course, such a device is very inconvenient to use.

You can also make your own magnetic electrode holder. Which, too, already depends on personal preferences in the convenience of work.

Homemade magnetic terminal a good option cost savings. Although to use such a mount or not - this is already looking at personal convenience in work. If welding is rarely used (as is usual in everyday life), then you can simply do with a standard clamp.


Arc welding people are familiar with the irritation and frustration that occurs when work is interrupted unexpectedly because the welding machine's ground cable suddenly stops contacting the workpiece. Traditionally, spring "crocodiles" are used for its fastening, the grip of which weakens with frequent use.


In addition, there are situations when it is simply impossible to attach such a clamp to the workpiece. An alternative to the crocodile clip is the magnetic adaptation for fixing the ground cable, which can be done from the old speaker from the radio.


The speaker needs a large diameter. It is not necessary to dismantle the working radio tape recorder to extract it; if you wish, you can find one at the nearest car dump.


How to make a magnetic mass for welding
It is not difficult to make a magnetic mount for the ground wire of the welding machine from it. For this:
1. Unscrew the magnet fastening screw located with back side dynamics.


2. Separate the magnet from the structure by simply picking it up with a screwdriver.


3. Grind the surface of the magnet to a smooth state using a grinder equipped with a flap disc.


4. Disassemble the standard spring clamp of the welding machine earth cable and release the end of the wire from it.


5. Select a bolt that matches the diameter of the cable lemma hole.


6. Insert the bolt into the hole of the magnet.


7. Assemble the fixture completely.



The result is a convenient magnetic attachment of the workpiece cable, which has a large area and, therefore, provides sufficient pressing force to the surface of the workpiece.


During the operation of the welding machine, the magnet of such a device and the mass cable do not heat up; with moderate use, the magnetic mass can last long enough.


I like things that make life easier and easier. This device will help the welder and save him from unnecessary actions. It will be about how to make a magnetic ground contact for a welder from an ordinary unnecessary speaker. I'll tell you more ...
Usually, to attach a common wire to the metals being welded, a clamp is used. Such a connection does not always give a tight and reliable contact, and there are times when it is not very convenient. With the help of a magnetic contact, you can get a durable and reliable connection large section, meaning a good contact area.

It will take

  • The dynamic head is naturally inoperative.
  • Hairpin.
  • Cheburashka nut.
  • Washers.

Making a magnetic contact for a welding cable


We disassemble the speaker, or rather, disconnect the magnet. To do this, you need to knock down the rivets. To do this, you can clamp the dynamic head in lathe and waste. Or just drill with a regular drill. In general, it is not difficult.


And the magnet comes off without any problem.


The core, in my case, almost came off by itself.


If it does not work out for you, then heat it up gas burner and pick it up with a screwdriver.


We take a piece of hairpin 8-10 cm long and try it on to the core. It will attach like this.


We drill with back side... The hole is not a through hole, but about 80% of the total length.


Clamp in a vice and cut the thread for the stud.


We put two nuts on the hairpin and tighten them together.


And now we screw this improvised bolt into the core to the maximum, it will no longer be necessary to turn it out.


Now we twist the nuts.
In order not to lay the wire straight on the base, we first put on a small sleeve, and then the washer. Next is the welding wire.


We fix it from above with a washer and a wing nut.


Pay attention to the large area of ​​the applied contact.


Now we put the magnet together.


For proper retention, you can plant everything on glue or epoxy.


The magnetic contact is ready. We are trying to weld. We put it on the sheet.

 

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