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Topic: Shotwelding

	American Experience \| Streamliners \| People & Events
		Paving the way for others to use it, Budd came up with and patented the "shotwelding" process, a method that allowed stainless steel to be fabricated.
		Shotwelding preserved the strength and rust-resistance of stainless steel; this was a breakthrough, because ordinary electric welding would destroy these qualities.
		In 1931 Ralph Budd, the recently appointed president of the Burlington Railway (and no relation to Edward), suspected that stainless steel was just the sort of injection that passenger rail travel needed to give it a boost in the lean years of the Depression.
	www.pbs.org /wgbh/amex/streamliners/peopleevents/p_ebudd.html (628 words)

	Information about Pioneer Zephyr
		The train's construction included innovations such as shotwelding (a specialized type of spot welding) to join the stainless steel, and articulation to reduce the train's weight.
		On May 26 1934 it set a speed record for travel time between Denver, Colorado, and Chicago, Illinois, when it made a 1,015-mile (1,633 km) non-stop "dawn-to-dusk" dash, covering the distance in 13 hours 5 minutes at an average speed of 77 mph (124 km/h).
		In a shotweld, the two pieces of metal that are to be joined are pressed together at the joint with an electrode on each side of the joint.
	english.turkcebilgi.com /Pioneer_Zephyr (3890 words)

	Shot welding - Biocrawler (Site not responding. Last check: 2007-10-31)
		Sufficient pressure is applied to hold the two sheets of metal together and the peak current rapidly melts the interface and produces a small nugget of weld metal, which when cooled results in a shear resistant metal interface.
		Good shotwelds have twice the shear strength of a rivet of similar diameter and can be placed 50 percent closer together to each other.
		Distortion is eliminated, a problem that plagues the gas welding processes.
	www.biocrawler.com /encyclopedia/Shotwelding (366 words)

	CPR "The Canadian"
		In shotwelding : two pieces of stainless steel were joined into one uniform piece of stainless steel by attaching two electrodes on opposite sides of the desired weld location.
		Then, a precisely calculated amount of current was run for a precisely calculated instant of time between the electrodes through the spots to be joined.
		Shotwelding produced a stronger structure than rivetting, and made the attractive uniform silver skins of modern passenger equipment possible.
	members.kos.net /sdgagnon/cana.html (2257 words)

	Weld It! - TIME
		Unlike arc welding, melting of the current-feeding electrode is avoided by: 1) making the electrode partly of copper, whose resistance is very low; 2) mixing the copper, through powder-metal techniques (TIME, Sept. 29), with compounds whose melting point is far higher than steel's; 3) cooling the electrode with water.
		Shotwelding is a refinement of spot welding designed for stainless steel (usual formula: 18% chromium, 8% nickel), whose great tensile strength—four times that of ordinary carbon steel—is lost when it is heated to 1,100° to 1,600°.
		The Shotwelding electrodes stab the metal for 1/10 th 1/20 th of a second, heating it so instantaneously through its danger zone to its 2,700° fusing point that the alloy's unique strength is not affected.
	www.time.com /time/magazine/article/0,9171,772840-3,00.html (612 words)

	Pioneer Zephyr at AllExperts
		The train's construction included innovations such as shotwelding (a specialized type of spot welding) to join the stainless steel, and articulation to reduce the train's weight.
		On May 26 1934 it set a speed record for travel time between Denver, Colorado, and Chicago, Illinois, when it made a 1,015-mile (1,633 km) non-stop "dawn-to-dusk" dash, covering the distance in 13 hours 5 minutes at an average speed of 77 mph (124 km/h).
		In a shotweld, the two pieces of metal that are to be joined are pressed together at the joint with an electrode on each side of the joint.
	en.allexperts.com /e/p/pi/pioneer_zephyr.htm (3356 words)

	The Ultimate Pioneer Zephyr - American History Information Guide and Reference
		The train's construction included innovations such as shotwelding (a specialized type of spot welding) to join the stainless steel, and articulation to reduce the train's weight.
		On May 26 1934, it set a speed record for travel time between Denver, Colorado and Chicago, Illinois when it made a 1,015-mile (1,633 km) non-stop "dawn-to-dusk" dash, covering the distance in 13 hours 5 minutes at an average speed of 77 mph (124 km/h).
		In a shotweld, the two pieces of metal that are to be joined are pressed together at the joint with an electrode on each side of the joint.
	www.historymania.com /american_history/Pioneer_Zephyr (2921 words)

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