Shot welding
Shot welding is a specific type of spot welding used to join two pieces of metal together. This is accomplished by clamping the two pieces together and then passing a large electric current through them for a short period of time. Assuming the right amount of current for the right time, this will weld the two pieces of metal together. Shot welding was invented by Earl J. Ragsdale, a mechanical engineer at the Budd Company, in 1932 for the purposes of welding stainless steel. This welding method was used to construct the Pioneer Zephyr.
The method
The E. G. Budd Company of Philadelphia recognized the important metallurgical characteristics of 18/8 stainless steel (known today as SAE 304 austenitic stainless steel) and developed a spot welding process to take advantage of the oxidized layer on the surface of stainless steel. Heat treating the 18-8 stainless steel leaves a metal with non-magnetic and ductile properties. Repeatedly reheating the metal to 1000–1100 °C impairs the mechanical and chemical properties of the metal. The metal becomes susceptible to corrosion due to carbide precipitation, and loses fatigue resistance. The important factor in controlling the metal's properties is the dwell time at those temperatures. Using a controlled time element and recorder, a power supply with smooth current, and very brief high currents, a satisfactory spot weld may be produced.
Podcasts:
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by Uriah Heep
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by Status Quo
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by 3LW
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by Angel Taylor
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by Ani Lorak
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by Stepanian
SHADY LADY
by: Uriah HeepOut from St. Louis
I wasn't choosy
I just wanted to get
Back on the road
I hitched in cars
And worked in bars
Lookin' for a place
To lay down my load
I met a lady, a shady lady
And someone told her
I was all on my own
She poured a beer
And said when I'm finished here
Hang around ‘cause
I'm taking you home
Don't worry
I'll treat you all right
Don't worry
You can stay all night
I thought it was any easy ride
But I didn't know where
I was until I got inside
She said, ok sonny
Give me your money
And don't start any foolin' around
I said what, I said what
Don't you think you're
Turning me upside down
She said, I don't care
I've been everywhere
And I've not been looking for you
But I'll take you in
And give you a spin
You'll know some tricks
By the time we get through
Shady lady
You want it all your own way
Shady lady
You won't let go of your prey
Shady lady
Eat me up and spit me out
But let's get started now
I know what you're talking about
Now in the morning
As the day was dawning
Shady asked me if
I'd stay there awhile
I said stay, baby no way
But I couldn't keep myself
From a smile
I said now no bye-bye's
Go in and dry your eyes
That ain't fittin'
For a lady like you
Why not be smart
And give your life another start
But take care now
Whatever you do
Shady lady
I'm on my way
Shady lady
We'll meet again one day
And don't worry 'cause when we do
I'm gonna make sure
That there ain't
Very much left of you