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Definition and History of Welding
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acetone acety acetylene adjust alloy alternating current amount amperes arc length base metal Bevel braze-welding brazing Butt Joint cable Canadian Liquid Air carbide carbon carburizing flame cast iron cause cent Chip colour connections copper Corner Joint cutting torch diameter Amperage range direct current duty cycle edge elec electric electrode Electrode angles electrode coatings electrode holder equipment EXERCISE filler metal filler rod fillet welds flame test flat position flow flux furnace gases heat hose hydrogen inner cone iron powder Lap Joint lead angle lene Liquid Air Ltd machine manufactured material melt method mild steel mixing chamber molten metal molten pool neutral flame nickel operator oxides Oxidizing Flame oxyacetylene welding pass penetration prevent produce regulator shape shield shown in Figure Silver-brazing alloys slag stringer bead sure surface tack welds temperature tion trode type of welding undercut usually valve voltage weave weld metal welder welding tip welding torch