49 pages matching projection welding in this book
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No 2 Price 9d By Post lid MARCH 1939
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acetylene alloys aluminium amperes angle applied arc welding automatic blowpipe British butt welds carbon cast iron cent centre circuit coating connection construction copper cutting cycle diameter direct current edges electric arc Electric Welding electrode engine equipment fabrication factor fillet welds flange flash welding frame fusion gas welding gauge girder heat ignitron inch increased Institute of Welding load manufacture material maximum method mild steel motor necessary obtained oxy-acetylene oxygen pipe plate possible practice pressure production projection welding resistance welding riveted Road seam seam welding shear sheet ship shipbuilding shown in Fig side specimens speed spot welder spot welding strength stress structure suitable surface tank temperature tensile tensile strength thickness tion tons transformer tube voltage weight weld metal welded joints welding current Welding Industry welding machines welding process welding rod