Welding 101
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allsierra123
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david58
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This is a thread well worth reading.allsierra123 wrote:great job on the faq page.We need it stickied.Whos the moderator over here.I think you need to be you work fast.
http://shoptalkforums.com/viewtopic.php?t=109039
Doc can make it a sticky. I was thinking his forum didn't have a Mod sorry tryout.
Hot, humid air is less dense than cooler, drier air. This can allow a golf ball to fly through the air with greater ease, as there won't be as much resistance on the ball.
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terry cloyd
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david58
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I would rather Muffler Mike post it, that's a good idea Terry.terry cloyd wrote:David maybe you can go to Muffler Mike's web page and copy his welding needs on the date 7/16/2000. It might help some of the welders
Hot, humid air is less dense than cooler, drier air. This can allow a golf ball to fly through the air with greater ease, as there won't be as much resistance on the ball.
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Muffler Mike
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- Joined: Tue Feb 20, 2001 12:01 am
no problem guys. i will copy and paste from my update.David58bug wrote:I would rather Muffler Mike post it, that's a good idea Terry.terry cloyd wrote:David maybe you can go to Muffler Mike's web page and copy his welding needs on the date 7/16/2000. It might help some of the welders
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I have finally started a project that has been put on the back burner for a while.
This is not really VW related in the normal sense, but it will contribute to a better work environment in the garage.
I am installing a new 200 amp service panel on the side of the garage.
From tips from some friends, I used a little air hammer, and chiseled the stucco to open the hole for the panel. This item works so well. I outlined where I wanted to cut, moved in about 3 inches, chiseled again, cut the wire and tare paper, and out came this solid piece that the hammer is sitting on.
Once again, an electrical contractor friend, picked up a whole kit that he can get a good price on from his wholesale house. Basically it came with the box, wire, armored ground cable, ground rod, conduit for the service entrance, the roof flashing, weather head, assorted grounding clamps and fitting, and 4 extra 20 amp single breakers. If I went down and got this same stuff from a Home Depot, it would have cost me an extra 50-75 bucks.
By Saturday night, I had the panel completely installed and just about ready for some new stucco.
The weather head is up. around my area, code states the weather head be 3 ft above roof surface. So Cal Edison wants 3 feet of wire sticking out. I went with 2/O wire with a 1 1/2" conduit for the inlet. I personally think this is a little small, but it passes code. The down side of using 3/O wire is I would have had to step up to a 2" conduit which is 2 1/2" diameter, this would have made the top sill of the garage mighty thin, and I would have had to do some extra supporting. According to the code book, the 2/O wire will take 195 amps at 90c, and I know the wire will not see 180-190 degree weather.I work in an industrial area where you size according to the book and make sure if taxed all the way it can handle it and not what you will really use. Soon I will be able to power a welder or a big compressor, etc. I still need to install ground rod, run some conduit for the power to the house, get it all inspected by the city and then I can play. Most likely another month from now.
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In the end, the ultimate goal was to run this old school, monstrosity 300 amp tig welder. Old but works good. (and the price was right at the time, free) I also have a plasma cuttiner i use on it too. its nice to know when the compressor kicks on, the house lights do not dim any more.
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terry cloyd
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Now we can get the boys to move from the 120 volt welder to the 240 volt welder -
david58
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david58
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Glossary of Welding Terms
Duty Cycle- The amount of time a machine can be used at a particular output. Expressed as a percentage of a ten minute cycle, a 150 amp machine with a 30% duty cycle will allow 3 minutes of use for every ten and a 60% duty cycle would allow 6 minutes of use for every ten. The duty cycle increases as the power setting decreases so if the 150 amp machine were to be used on a 30 amp setting the duty cycle might be 100% allowing it to be used 10 minutes out of every ten.
Keep in mind, however, that the actual total time a machine can be used continuously is not determined by a timer, but typically by a thermostat within the machine which will shut it off if the machine is too hot and needs to cool down before it does more work. Therefore, even a 30% machine can be used more than ten minutes at a stretch.
Inert gas - Used to shield the electric arc from outside contaminants and gases which may react with the weld. An inert chemical is one with a full outer shell of electrons which do not normally react with other substances. Inert gases include argon and helium. Some other non-inert gases are used for welding such as CO2.
Input Voltage- the nominal number of volts required to power the equipment. 115V is what's known as regular household current. 220V is what would normally be found in home garage, say to power a dryer.
Infrared-The portion of the light spectrum beyond visible red. It produces a penetrating heating effect.
KVA - Kilo Volt Amps. One (1.0) KVA equals 1,000 watts. This measurement is typically used to describe generators and the amount of power they supply.
MIG - Metal Inert Gas welding. Also referred as GMAW (Gas Metal Arc Welding). The "Metal" refers to the wire which is what is used to start the arc. It is shielded by inert gas and the feeding wire also acts as the filler rod. A semi-automatic process, it is fairly easy to learn and use.
Plasma - The fourth state of matter following solid, liquid, and gas. Plasma is an ionized (electrified) form of gas. In plasma cutting, a gas such as Nitrogen is sent under pressure through the torch where it begins to swirl and is forced out a small orifice at which point it passes through an electric arc and the gas is ionized. The electricity "excites" the electrons of the gas atoms.
Single Phase vs. Three Phase- 220V comes in different ways. Single phase is the type of input voltage that you'll typically find like what's used to run that dryer. It comes in a cord with three wires. One is used for ground, the other two carry 110V each. A three phase cord has four wires, one for ground, and the other three alternate carrying the two 110V legs.
TIG - Tungsten Inert Gas welding. Also called GTAW (Gas Tungsten Arc Welding) and Heliarc® which was Linde's trade name for the TIG process when it was introduced many years ago. The arc is started with a tungsten electrode shielded by inert gas and filler rod is fed into the weld puddle separately. A slower process than MIG, it produces a more precise weld and can be used at lower amperages for thinner metal and can be used on exotic metals. TIG does require quite a bit more time than MIG to learn. It is similar in technique to gas welding.
Ultraviolet- The portion of the light spectrum beyond the visible blue and violet. Excess UV exposure has been linked to cataracts.
Watt - A watt is determined by voltage times amperage. A 110 volt circuit that supplies 20 amps of power supplies 2,200 watts (110V x 20A=2,200) 1,000 watts can also be expressed as KVA (see above).
http://www.daytonamig.com/glossary.htm
For more welding terms go to:
http://www.weldguru.com/welding-terminology.html
Duty Cycle- The amount of time a machine can be used at a particular output. Expressed as a percentage of a ten minute cycle, a 150 amp machine with a 30% duty cycle will allow 3 minutes of use for every ten and a 60% duty cycle would allow 6 minutes of use for every ten. The duty cycle increases as the power setting decreases so if the 150 amp machine were to be used on a 30 amp setting the duty cycle might be 100% allowing it to be used 10 minutes out of every ten.
Keep in mind, however, that the actual total time a machine can be used continuously is not determined by a timer, but typically by a thermostat within the machine which will shut it off if the machine is too hot and needs to cool down before it does more work. Therefore, even a 30% machine can be used more than ten minutes at a stretch.
Inert gas - Used to shield the electric arc from outside contaminants and gases which may react with the weld. An inert chemical is one with a full outer shell of electrons which do not normally react with other substances. Inert gases include argon and helium. Some other non-inert gases are used for welding such as CO2.
Input Voltage- the nominal number of volts required to power the equipment. 115V is what's known as regular household current. 220V is what would normally be found in home garage, say to power a dryer.
Infrared-The portion of the light spectrum beyond visible red. It produces a penetrating heating effect.
KVA - Kilo Volt Amps. One (1.0) KVA equals 1,000 watts. This measurement is typically used to describe generators and the amount of power they supply.
MIG - Metal Inert Gas welding. Also referred as GMAW (Gas Metal Arc Welding). The "Metal" refers to the wire which is what is used to start the arc. It is shielded by inert gas and the feeding wire also acts as the filler rod. A semi-automatic process, it is fairly easy to learn and use.
Plasma - The fourth state of matter following solid, liquid, and gas. Plasma is an ionized (electrified) form of gas. In plasma cutting, a gas such as Nitrogen is sent under pressure through the torch where it begins to swirl and is forced out a small orifice at which point it passes through an electric arc and the gas is ionized. The electricity "excites" the electrons of the gas atoms.
Single Phase vs. Three Phase- 220V comes in different ways. Single phase is the type of input voltage that you'll typically find like what's used to run that dryer. It comes in a cord with three wires. One is used for ground, the other two carry 110V each. A three phase cord has four wires, one for ground, and the other three alternate carrying the two 110V legs.
TIG - Tungsten Inert Gas welding. Also called GTAW (Gas Tungsten Arc Welding) and Heliarc® which was Linde's trade name for the TIG process when it was introduced many years ago. The arc is started with a tungsten electrode shielded by inert gas and filler rod is fed into the weld puddle separately. A slower process than MIG, it produces a more precise weld and can be used at lower amperages for thinner metal and can be used on exotic metals. TIG does require quite a bit more time than MIG to learn. It is similar in technique to gas welding.
Ultraviolet- The portion of the light spectrum beyond the visible blue and violet. Excess UV exposure has been linked to cataracts.
Watt - A watt is determined by voltage times amperage. A 110 volt circuit that supplies 20 amps of power supplies 2,200 watts (110V x 20A=2,200) 1,000 watts can also be expressed as KVA (see above).
http://www.daytonamig.com/glossary.htm
For more welding terms go to:
http://www.weldguru.com/welding-terminology.html
Last edited by david58 on Wed Apr 04, 2007 5:40 pm, edited 1 time in total.
Hot, humid air is less dense than cooler, drier air. This can allow a golf ball to fly through the air with greater ease, as there won't be as much resistance on the ball.
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Muffler Mike
- Posts: 3186
- Joined: Tue Feb 20, 2001 12:01 am
well this was the most recent weld project. a stainless down pipe, but doenst really show much detail.David58bug wrote:That's a welder Muffler Mike, nice price. Show us some welding.
welded up some aluminim tubing and intercooler mounts for a friends Scion last year.
And always using it for making tools, brackets, etc. like this crows foot type of tool made from a socket and wrench to go over 12 point nuts.
(torqing down raceware head studs on a comp eliminator head)
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david58
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speedy57tub
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david58
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Go to:speedy57tub wrote:YES, a welding forum would be GREAT!!! Please do!
http://shoptalkforums.com/viewtopic.php ... highlight=
and vote.
Hot, humid air is less dense than cooler, drier air. This can allow a golf ball to fly through the air with greater ease, as there won't be as much resistance on the ball.
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david58
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- Joined: Sun Oct 23, 2005 6:14 pm
Re: Welding 101
Come one guys what are the best welding books and videos to buy?allsierra123 wrote:In attempts to make a place where those learning to weld as well as old pros,Can come to exchange ideas and help one another to learn.If we can get enough interest in this subject we may get ourselves a welding and fab forum.So lets see if we can get some posts on this threads about where to start what to start with what to purchase,And what would be good to start reading.As well as new Ideas and techniques.
Hot, humid air is less dense than cooler, drier air. This can allow a golf ball to fly through the air with greater ease, as there won't be as much resistance on the ball.
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fusername
- Posts: 6806
- Joined: Sun Jan 28, 2007 11:26 am
Since this is called welding 101, Im gonna ask my question here before I blow my money. A 220 line is out of the question, so so is a 220 welder. I have found a decent price on a used blue point 110 mig. what CAN I do with this? people say don't waste your money on 110, but i need a welder, and can't get a 220 (living with parents, moving in weeks, broke student). I got a stick 70amp as a gift, used, well used. I heard its basicly useless, except for very crude work on thinish steel. is this true? I figured I would just use it as a cutting torch till I ran out of stick, then sell it for a buck or two.
what is 110 mig good for?
What is a 70 amp stick good for?
body work?
suspension?
cutting "torch"?
fabbing tools?
paper weight?
etc
what is 110 mig good for?
What is a 70 amp stick good for?
body work?
suspension?
cutting "torch"?
fabbing tools?
paper weight?
etc
give a man a watch and he'll allways know what time it is. give him two and he can never be sure again.
Things are rarely just crazy enough to work, but they're frequently just crazy enough to fail hilariously.
Things are rarely just crazy enough to work, but they're frequently just crazy enough to fail hilariously.
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david58
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- Joined: Sun Oct 23, 2005 6:14 pm
Which MIG welder should I buy?
If most of your welding will be performed on material less than 1/8" thick, a 115v MIG machine is probably your best bet for economic reasons. For flux-cored welding, an 115v machine will generally allow you weld material up to ¼". An 115v unit is less expensive and will well suit your needs. When choosing a machine, look also at the amperage ratings of the machine - you don't want to overburden a machine by continuously welding at amperage higher than what is recommended.
The material thickness that you most often weld will not only determine the process that you choose; it will also determine the voltage of the unit you need. For instance, if you plan to weld over 1/8" material the majority of the time using a MIG process, it is recommended that you invest in a 230v system. The higher amperage range of this machine can better handle your welding needs in a single pass and you won't have to waste time with second or third passes.
One important thing to remember is that you need not use an extension cord and the breaker needs to be right ampherage for the welder. Or it would weld properly.
If most of your welding will be performed on material less than 1/8" thick, a 115v MIG machine is probably your best bet for economic reasons. For flux-cored welding, an 115v machine will generally allow you weld material up to ¼". An 115v unit is less expensive and will well suit your needs. When choosing a machine, look also at the amperage ratings of the machine - you don't want to overburden a machine by continuously welding at amperage higher than what is recommended.
The material thickness that you most often weld will not only determine the process that you choose; it will also determine the voltage of the unit you need. For instance, if you plan to weld over 1/8" material the majority of the time using a MIG process, it is recommended that you invest in a 230v system. The higher amperage range of this machine can better handle your welding needs in a single pass and you won't have to waste time with second or third passes.
One important thing to remember is that you need not use an extension cord and the breaker needs to be right ampherage for the welder. Or it would weld properly.
Hot, humid air is less dense than cooler, drier air. This can allow a golf ball to fly through the air with greater ease, as there won't be as much resistance on the ball.