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What is the current and voltage character of flash butt welding?
Wiki User
∙ 11y ago
Voltage is typically quite low, around 4v to 10v. Current though will fluctuate highly during the flashing as short circuit is made and broken, perhaps 15,000 amp at peaks. Often continuous current would be also applied during the butting part of the cyle, this also would be be of a similar order.
Wiki User
∙ 11y ago
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What is difference between seam welding and spot welding?
The only difference between the two is that projection welding requires preparation of the joint members in the way of adding a preformed dimple or projection. Spot welding is used without such preparation to the joint members. it's just heat and pressure.
Is there a different when electrocuted with a current of high and low voltage?
High-voltage systems have extremely high levels of energy and, so, coming into contact* with a high voltage conductor will likely cause catastrophic external burns at the current's entry/exit points, as well as internally along the current path. The likely of recovery from high-voltage electrocution is low. Anyone who does recover may have irreversible organ damage. (*It's not even necessary to come into physical contact with a high-voltage conductor, as merely approaching within its vicinity may be enough for flash-over to occur.)
What detemines the intensity of an arc flash?
-- the current in the arc -- your definition of 'intensity'
Does the iPad 3 have a flash?
Flash as in camera? No. Flash as in Flash Player? No
Why busbar melted on circuit breaker primary side?
due to heat only it has malted . when over current is flowing in the Al. or cu. conductor at that time it will get damage or flash over will come.
Where did flash welding come from?
writing a paper and was wanting info
Are there capacitors involved in a camera flash?
Generally, yes, there are capacitors in a flash unit for a camera. The flash needs a lot of energy "right now" in order to work properly. And at suffiencient voltage to cause the flash tube to flash, too. Let's look at some particulars. Jump with me. Any battery stores energy and delivers it (when it is not damaged or run down), but the battery only has a limited ability to supply a large amount of current. In fact, most all batteries in flash units (either the ones built into the camera or the independent ones you by and plug into your camera) don't have the ability (or the output voltage!) to deliver what the flash needs to work properly. That big shot of current, and at a high enough voltage to ionize the gases within the flash tube, can't be delivered by battery. That's why the flash unit will, when turned on, take a steady amount of current from the battery, put it through a "chopper" or voltage multiplier to step it up to a sufficient level, and pour it into a capacitor to store it in preparation for discharge through the flash tube to create the flash. This also explains the few seconds needed in recovery time before you can use the flash again.
What is difference between seam welding and spot welding?
The only difference between the two is that projection welding requires preparation of the joint members in the way of adding a preformed dimple or projection. Spot welding is used without such preparation to the joint members. it's just heat and pressure.
Can welding cause cataracts?
Flash Burn and Blindness
What is the voltage supply used in flash lights?
Because a flash light is a portable piece of equipment, it operates on batteries. The power source is a DC voltage.
What the flash cw character are you?
Barry Allen The Flash
Would the flash butt welding of rails by the use of mobile flash butt welding machine can be called a railway engineering activity?
Yes, the procedure and specifications are covered in the AREMA (American Railway Engineering and Maintenance Association) manual Chapter 4.
Where you use transformer?
Transformers are use in those places where we want to step up or step down the voltage of current. Common examples of transformer are. 1.In camera flash light. Batteries which we use in camera are insufficient to provide enough voltage to cathode tube that it can cause such a bright light therefore two transformers are use which one by one higher the voltage of current and the voltage reaches up to 300 to 350 volts. 2. Another example is in transportation of current, from the source where current is made to the consumer like us, in order to reduce the losses during the long wire movement of current the supplier higher the voltage by transformer and through wire current reaches to urban cities where we use it but before it reaches us, the current is again passes form transform which lower down the voltage of current. by Syed Ahmed Nasir Tirmizi (Pakistan, karachi)
What is the flash welding?
This is the process where you use direct electrical heating on the ends of the pieces to be welded and then forge them together. This type of welding process comes under the category of resistance welding and this process is commonly known as FLASH BUTT WELDING.By this process material are joined axially.the two workpieces to be joined are placed end to end on a same axis . a small gap is maintained between the workpiece and a very high current(100000A) is passed through the workpiece. once the gap between the two material reaches a critical value the air present between workpiece ionizes with a FLASH. this flash removes the oxide layer ( due to this oxide layer its difficult to weld) from the material surface and also makes the material little soft near the ends. Once the material becomes sufficiently soft AXIAL PRESSURE is increased to make a joint. This process is used to weld sometimes railway tracks(Delhi metro track),automobile axle,joining blades of a band saw etc. VOLTAGE <10volts , CURRENT = 100000amp , POWER = 200kva
Is there a different when electrocuted with a current of high and low voltage?
High-voltage systems have extremely high levels of energy and, so, coming into contact* with a high voltage conductor will likely cause catastrophic external burns at the current's entry/exit points, as well as internally along the current path. The likely of recovery from high-voltage electrocution is low. Anyone who does recover may have irreversible organ damage. (*It's not even necessary to come into physical contact with a high-voltage conductor, as merely approaching within its vicinity may be enough for flash-over to occur.)
What is critical impulse flash over voltage?
This is the peak voltage for a 50% probability of flashover or disruptive charge.
Can Flash beat your character in a race?
never in a million years. My character has super speed and could beat flash with his eyes close.
