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Expert for pre insulated duct CNC cutting machine.

build a microwave transformer homemade stick/arc welder

I don\'t know how easy it would be to make a DIY welder.
And it\'s almost free!
Also, the stick welder you get is definitely better than any cheap commercial welder you can buy.
Why is this homemade thing better than what you can buy?
Because when you consider shipping and labor and retail markups --
Companies that make typical cheap buzz box will try to reduce the price of copper as much as possible.
However, you can use enough copper in this area to make something really juicy compared to the store, and still spend less, or even nothing --
Bought arc welding machine
So you need to build a welder :-
Two dilapidated microwave ovens
Line 10-
If you stare at the curb, the wire nut man will throw away the microwave all the time.
Alternatively, you can buy a microwave at a local thrift store for $10 per unit.
Try the warehouse that handles donations
They have to pay to get rid of a lot of broken garbage.
Materials required for welding :-
Welding helmet ($16 and up)-Welding rods ($6)-
Auxiliary handle or use-
Built-in electrode holder ($6 for either)-
Grounding clip C clip-Gloves-
Thick without burning (leather)
Clothing that covers your armsdisclaim: high voltage power and a lot of current!
Heat, electricity and danger!
You may die, you may be blind.
That is to say, try this at home!
See this, a lot of welding safety tips are a very good way
Tos to be informed of this project: construction of a 70 amp welding equipmentvia afrigadget)
Comments by Dan Hartman
To is also very suitable for reference.
This is the fastest way to make a DC welder with a bunch of 12 volt batteries. Invite your non
Come and help analyze your donation device for hardware friends.
They will like it.
David Gross donated one of the microwaves while we were apart together.
Safety tip: you will find a huge capacitor in the microwave oven.
It looks like a metal tank with two labels on it.
Shorten it before you poke anywhere near it to make sure it doesn\'t have any remaining expenses.
Just put a screwdriver on the two metal terminals shown here or some metal that you don\'t have connected.
Always and eliminated middle schools (thin wire)windings.
Do not impact or damage the primary winding in any way.
If you do, you can make short circuits where the two windings conduct each other, allowing power to bypass certain parts of the coil, thus effectively creating smaller coils, and create something different than what you expect in the output.
Or, you may completely cut the connection and destroy the primary.
So try your best to keep it intact.
We picked up some heavy wires from an old steamboat.
We take off our coats, separate the inner conductors and wrap around the new secondary conductors on our transformers.
We have 10 laps, 20 laps.
Measuring wires on each transformer.
This is the problem of how many wires are installed in the available space.
It cost a little more than 20 feet per wire.
Tip: draw rational number marks on your desk to track the number of windings.
How does the transformer work?
The primary winding is an induction magnet connected to the AC.
The hum magnetic field of the primary coil generates current in the secondary winding.
If the number of turns of the two windings is the same, the output voltage is the same as the input voltage. (
Subtract a bit due to eddy current, resistance, etc. )
If the secondary has more turns than the input, its output voltage is higher.
This is the type of transformer you started using.
Output voltage = input voltage *(
Number of secondary circles)/ (
Number of primary turns)
Our primary power supply has 100 turns and is connected to a 100 v ac power supply.
We will go around 20 switches on the secondary power supply, so we will output about 20 volts.
No matter what the output voltage is, the available power remains the same. POWER (WATTS)
= AMPS * volt if the primary power supply is 1000 W (
100 V * 10 am ps)
From the wall, we can take 1000 Watts from the middle school.
With a winding of 1/5, we can draw 50 amps from the secondary coil.
Anyway, this is the cartoon version with the game number.
In our reality-filled shed, we have two of these beasts in series and plan to shorten the output with electrodes like Jennifer bear.
Let\'s say we\'re going to pull a bunch of amplifiers, which is why we need to wrap our secondary power supply around with such a thick wire.
Copper conductor in ten miles
Guage wire is exactly 1/10 \"(0. 1\")in diameter.
This is a table of conductor diameter, specification and rated current.
This is a very simple circuit.
In fact, there is nothing inside except the wire!
We need two transformers.
Apply the voltage of the secondary winding on them with a thick wire.
We will connect our electrode to the workpiece.
We will put the primary on the wall.
I really like the way aaawelder says: \"Don\'t include yourself in this circuit\", why are we using two Transformers?
Only one of them is not big enough to be a really juicy welder.
If you happen to find a transformer somewhere large enough, feel free to use it.
Here\'s how to connect two transformers.
First, we connect two primary windings in parallel to the wire on the wall.
We then connect the thick sub-grades in series so that they can \"push\" and \"pull\" in the same direction \".
Take out your voltmeter: this is the test to make sure the secondary voltage moves in the same direction.
The two secondary power supplies of our series generate 38 v ac at no load.
This seems right.
If they are wrong in stages, they can be fixed by reversing the line to any winding.
Tim said in the video \"does not meet the stage\" and he meant \"in the stage \".
That is to say, the center tap should be smaller than the external two leads, and if this is not the case, the transformer will fight each other or go wrong in stages.
Those 1/16 thin electrodes cost about twice as much as thick ones.
We would like to see how our welder uses thicker electrodes.
The next size is 3/32 \"but we have a box of 1/8\" 6011 electrodes.
When we took one out of the box, we all said \"Wow, it\'s too thick \".
We started our welder and I welded this bead on a diamond board with a 1/8 \"rod.
The arc was short but burned well and felt good once I got used to it.
I have to push a little more than I have in the past to keep the arc running, but persistence is not a problem.
I welded a long bead and ran out of more than half of the poles without stopping.
This is the long Weld in this photo.
Then I put the \"torch\" in this plastic tub so it doesn\'t lack anything.
I checked the Transformers and they were not even warm!
However, 3/32 \"fewer than 1/8\" strike circuit breakers.
For your first weld, get 3/32 \"6013 sticks.
The flux of the 6011 rod is thinner, it is easier to see what the weld metal is doing, but it will splash more.
The next picture is from hobartwelders for reference only.
This is my favorite welder now.
I made a new lead for it with a pair of jumper cables.
I left a crocodile clip for a ground clip and added a $6 electrode holder.
I have taught many people to weld with it.
The next photo is the first welding of the Ita, making a awning frame.
The project is welded by this welder for beginners using a total of 3/32 \"6013 sticks.
We have other kinds of welders as you can see, but homemade ones are more interesting.
The Mitzen mast in Solola needs some support.
So we went to the welding shop and bought about 3/32 \"\"
Stainless steel electrode.
They are only 12 \"long because the stainless steel has a high resistance and it becomes very hot.
After many designs and drawings Victor, Kenny and I cut, drilled, bent and welded these brackets. Very easy.
When it cools, the flux \"tik\" falls off the weld.
The dark area around the weld is soot from the flux.
Welders can handle thicker rods because of unclean high resistance and low thermal conductivity.
Important: Use New grinding wheel on stainless steel or grinding wheel only on stainless steel.
If you use anything that is already in the non-Stainless steel.
The same is true of the wrong line brush.
It will apply rustable iron on stainless steel, and it will rust quickly if wet due to current effect. Hooray!
Where do I get the idea that you need stainless steel TIG?
Great welding on stainless steel!
The welder is too hot, too thin.
Wall tube frame, I have been melting holes even with 1/16 \"6013 sticks.
So I plugged the welder into a multiplier and the power was turned down about 30%.
This gives me a good control over power.
Marc Lander and I did some very good welding here.
After a few times, we have enough capacity to do the same welding with 3/32 \"6013 sticks, no dimmer, no holes burned. More tricks -
I fed a piece of MIG welding wire to the weld with my left hand to add more metal and absorb heat.
That\'s what Marc did.
For this case, any wire is OK and coathangers is working on a traditional silencer.
If you don\'t like smoke, polish off the paint first.
It was also very helpful to stop for lunch.
Your weld will not be very good when you shake and fatigue.
I bought my variac for free and don\'t buy it for it, they are as high as welders. A solid-
State dimmers rated for induction loads do the same, and the cost is much lower.
If you feel particularly like it, you can add it to your own scr-
Like this guy, change the power based on the switch circuit.

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