what is the brief difference between butt welding and fillet welding?
822159
Two factors - positioning of the welding wire and the shape of the weld reinforcement - are especially important in fillet welding. In general, fillet welding requires slightly lower speeds and lower voltages than butt welding with the same welding current.\n\nfor more information pl. visit:\nhttp://www.qualitytubing.com/buttweld.html
555540
Not sure about using "welding rod", but I know you can spot weld and ultrasonically weld Polystyrene to Polystyrene quite well.  There is "General Purpose" and "Rubber Modified" Polystyrene.  The rubber modified is easier for spot welding, swaging and staking, so I'd assume is easier for other methods of welding.  If you use welding rod, it would need to be Polystyrene (You may get some bonding with Polycarbonate as well).  Haven't seen welding rod in either of these materials though....  maybe someone else has??
1083199
Well that depends... are we talking MIG, TIG or some other modern welding technique?
663481
Depends on the pressure and temperature of the system. At low pressure and temp you can use teflon tape or plumbers putty, at high temp and pressure you need to use garlock, graphite flexes or a graphite sealing compound. you should really weld any high pressure unions and then then test prior to putting the system into use.
816067
top of my head:\n- the material lining the barrel (friction)\n- the tightness of the fit of the spud inside the barrel (air leaks)\n- the length of the barrel (longer is generally more powerful)\n- the gas compression mechanism (higher presser is better)\n- the release/firing mechanism (faster is better)
399593
Look into a product called Alumaloy. It's like welding that you can do with an ordinary propane torch. They claim its stronger than steel and will bond to any kind of metal.
40085
if u are welding steel with gas wire using co2 argon pushthe wire in the direction that your welding enless u are doing virtical then start at the top of the weld with the cup pointed upward slightly ofcourse proper heat and wire feed ned 2 be use ase a rule it should sound like your fryng eggs
1044312
both.I can say from experience both are very hard work.harder than most people would think.i have waitressed and i worked fast food for 4 yrs.so trust me neither is  an easy job.
640054
very poor syntax of your question......... \n\nI guess you want to know what two different metals together can make.....\n.... a thermostat\n\nthe two metals expand/contract at different rates causing a "bend" in the Bi-metal strip which will  open/close a contact switch and turn on/off the air conditioner or heater.
161252
Welders use plasma arcs all the time to cut metal\nyou could probably go see this in action at \na body shop, exhaust repair, or steel fab plant\nor even at your school possibly
286829
Soldering is when you heat a base material expand the surface atoms and introduce a substance [solder] that will mesh between the two. When this cools the base material will shrink around the solder and the two material will be bound to each other. Welding is when you heat two pieces of material to their melting point and the materials essentialy "mix" together. When they cool, you have essentialy one peice of material.
832417
I am not a welder but I know how to,,,,,kinda. I do know that when you weld with a torch, it is called Brazing. There are a few different types of electrical welding too. MIG, TIG, and Stick. \n\nI hope someone else will help me on this, but MIG is when you have a gun that the electrode (wire off of a reel) comes out when you press the trigger, as well as turns on the electric to apply to the electrode so it sparks when you touch the metal that you want to weld that has been grounded. MIG welders often use Argon as a shielding gas while welding. It helps the weld form better.\n\nTIG welding, I don't know much about. I think TIG welding uses a different gun that shoots an electrical arc to the piece(s) you want to weld, and you melt the two pieces with the arc while adding fill metal with a metal rod.\n\nStick welding is done when you have a welder that looks like there are jumper cables sticking out. You put one on the pieces to weld, and hold a stick electrode in the other. You turn on the welder and press the electrode to the metal. The electrodes are often covered with flux. Flux is to help your welds form properly to be strong. \n\nI think that you hammer the welds when done to see if they had alot of holes in them, and too see if they were formed properly. Hammering will flake the impurities off of the top so you can see the weld.
404191
go to a local welding shop and tell them what you need ...you just might want to take the thing to them so they can get an idea of what you are looking to get ... dont be cheap about it get your money's worth... you cant put a price on saftey
241867
If you can work on and fix them, look for a broken one that someone wants to get rid of.  How about 2-3 broken welders that can be cannibalized to feed each other parts.  Maybe it just seems broken and all it needs is an adjustment or to have a lead re-connected.  I've managed to get some free or near free things that way.  Just depends on how much legwork you are willing to do.  I'm sure you don't think that its just gonna fall into your lap... good luck getting your welder.
1043620
A welding fixture is a jig to hold the parts being welded. The design depends on what you are welding. Finishing the work properly requires operator skill because hot welds can distort the piece and pull it out of shape. A welding fixture can be as simple as some guide pieces tack-welded to the table...whatever you need to get the job done.\nSimple fixtures...\nhttp://www.vansantent.com/magnetic_welding_fixtures.htm\nUniversal workstations...\nhttp://www.bluco.com/welding/systemsizes/index.html\nFixtures for automated welding...\nhttp://www.premiertool.com/id74.htm
705318
To put it most simply, Copper is a metal and sulphur is a nonmetal.  Metals are better conductors of electricity.  If you want to know why metals are better conductors than nonmetals, you should look up band theory.
1033140
Im a female and I like my breast to be played with more then my ass. The breast is so much more sensitive to touch. So I choose RACK!!! :)