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Both are shielded metal welders but differ in the electricity they use. Ac welders can weld heavier metal while dc welders are better for thinner metals. Ac welders can weld magnetized metals. Dc welders can not. The arc in an ac welder is harder to control because of the pulsating current. Dc welders are more expensive. Some welding machines offer both options.
Wiki User
∙ 10y ago
Wiki User
∙ 13y agoac arc welding work on ac current after step down voltage to 80volt, dc arc welding machine step down voltage to 50volt and convert ac current to dc .
Wiki User
∙ 11y agoIn dc eaf
50% less electrode consumption & 5% less in power consumption and also uniform melting are advantages
Wiki User
∙ 10y agoWelding needs a large current flowing at a low voltage. That is most conveniently produced by using a transformer designed for the prpose, and that needs AC to work on.
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What are the three types of machines used in manual metal arc welding?
I am not sure your question is clear enough but here I go... Stick Arc Welding (AC or DC), MIG (Metal Inert Gas) and TIG (Tunsten Inter Gas). All three of these are the basic metal welding machines.
What is MMA welding?
MMA stands for manual Metal Arc welding. In short "arc welding" and can be used in either AC or DC mode. Usually incorperated with Mig, Tig and plasma cutters for arc welding machines as an optional extra. submitted by Ken.Benson - Clarke. sales@edacomputers.co.uk from saffon walden, essex, uk.
Mig welding or arc welding?
Technically speaking, MIG welding is arc welding because it uses an intensely hot electrical arc to heat and join the metal together. Usually arc welding means stick welding. The difference between the processes is the manner in which the filler metal is applied. With MIG welding, the filler metal is usually applied with a wire fed through a gun type device with an inert gas such as argon shielding the weld. Arc (or stick) welding uses a solid electrode of the same type of metal as is being joined shielded by a layer of flux. The method of welding depends on the user's skill and what is to be welded.
What is balance welding?
When welding on AC on a TIG welder you have to option to adjust how your arc passes from your torch to your metal and vice versa. This allows you to clawed your puddle clean of contaminants or burn your weld deeper while welding. When set on balanced, the arc equally passes in both directions.
Is Welding set a high voltage or high current load?
The arc utilized for arc welding is low voltage high current discharge. The voltage required for maintaining an arc is less than for striking the arc. Voltage drops & current increases as the arc is developed. The voltage required to strike DC arc is about 50-55 V & for AC is 80-90 V.It is difficult to maintain the arc with voltage less than 14V or more than 40V.READ ELECTRICAL TECHNOLOGY BY B L THAREJA / AK THAREJA
What is the difference between an arc welder and a stick welder?
Stick welding is also more difficult to learn and use, particularly the ability to strike and maintain an arc. Arc welders are available in AC, DC or AC/DC, with AC being the most economical. It's used for welding thicker metals of 1/16 inch or greater.
What is the difference in welding rods for ac welders and dc welders?
The difference in the ac/ dc , or polarity of welding rods is in the makeup of the flux coating , or the alloy of the metal, and in the case of SMAW ( Shielded metal arc welding ) rods , which have a flux coating, are usually marked on the base of the rod.
Which type of welding is preffered ac arc welding or dc arc welding and why?
Both currents have their ups and downs but both are used in the maufacturing industry, in reality it depends on your base metal and electrode.
What are the three types of machines used in manual metal arc welding?
I am not sure your question is clear enough but here I go... Stick Arc Welding (AC or DC), MIG (Metal Inert Gas) and TIG (Tunsten Inter Gas). All three of these are the basic metal welding machines.
What is MMA welding?
MMA stands for manual Metal Arc welding. In short "arc welding" and can be used in either AC or DC mode. Usually incorperated with Mig, Tig and plasma cutters for arc welding machines as an optional extra. submitted by Ken.Benson - Clarke. sales@edacomputers.co.uk from saffon walden, essex, uk.
What would happen if you use 6010 welding rod on an AC welding machine?
6010 is intended for DC welding. It has no additives in the covering to keep the arc going each time the AC voltage reverses, so it is very hard to keep the arc struck. The result is usually poor quality welds. The solution is to switch to a rod designed for AC, such as 6013.
What would happen if you use a 6010 welding rod on an AC welding machine?
6010 is intended for DC welding. It has no additives in the covering to keep the arc going each time the AC voltage reverses, so it is very hard to keep the arc struck. The result is usually poor quality welds. The solution is to switch to a rod designed for AC, such as 6013.
Mig welding or arc welding?
Technically speaking, MIG welding is arc welding because it uses an intensely hot electrical arc to heat and join the metal together. Usually arc welding means stick welding. The difference between the processes is the manner in which the filler metal is applied. With MIG welding, the filler metal is usually applied with a wire fed through a gun type device with an inert gas such as argon shielding the weld. Arc (or stick) welding uses a solid electrode of the same type of metal as is being joined shielded by a layer of flux. The method of welding depends on the user's skill and what is to be welded.
What type of welding can you do with an ac welding machine?
You can do Shielded Metal Arc Welding (stick) with an appropriate electrode. If the machine has a high frequency arc stabilizer then you can also TIG (tungsten inert gas) weld aluminum. Wire feed processes require a DC machine
What is the effect of AC and DC in arc welding?
DC WELDING:We gain a smoother welding because of constant and linear direction of current.The arc will be more stable and easier to handle.DC welder can use both AC and DC welding rods.AC WELDING:The arc is not stable here and needs to be stuck again because of the fluctuating nature of AC.It is not as smooch as DC welding.These welders cost less when compared to DC welders.
What is balance welding?
When welding on AC on a TIG welder you have to option to adjust how your arc passes from your torch to your metal and vice versa. This allows you to clawed your puddle clean of contaminants or burn your weld deeper while welding. When set on balanced, the arc equally passes in both directions.
Why ac is more popular then dc for metal arc welding?
A: Very simply efficiency. DC requires rectification from AC. Which will waste this process as non working heat
