Main symbol 1.1 G—Cast steel Such as GS-35, GG (Gray cast iron) 1.2 According to the use of steel and its mechanical and physical properties S —Steels for construction P —Steels for pressure vessel L —Steels for line pipe engineering E —Machinery engineering steels B —Concrete ...
Many things around us are welded Pipelines that bring fresh water Towers that carry electricity to housesCars and buses that take people where they n 4、eed to go6Why is Welding Important?Many7Why Learn to Weld?Welding is so HOT . its COOL!Welding can help build a successful career so ...
There are three main operations in the heat treatment of steel:hardening,tempering,and annealing.钢的热处理主要有三种方法:淬火、回火和退火。 The hardening operation consists of heating the steel above its critical range and then quenching it,that is,rapidly cooling it in a suitable medium such ...
Not used or rarely used for aluminum and its alloys, copper alloys, and titanium Gas Metal Arc Welding (GMAW) Uses a consumable bare metal wire as electrode with shielding by flooding arc with a gas Wire is fed continuously and automatically from a spool through the welding gun ...
(decrease)thevoltage.Itisnecessarytochangethevoltagewhenweldingthickerordifferenttypesofsteel.TheTransformer.Electric-Arc-Welding教学讲解课件Transformer-rectifiercircuitTransformer-rectifiercircuitTransformer-rectifiercircuit-A.C.toD.C.ThetransformercircuitelementofthecircuittakeACcurrentandpassitthroughastepdown...
CHAPTER4WELDINGANDJOININGPROCESSES * Threadedfastenersarecomponentsthat have external or internal threads for assembly of parts. The common threaded fastener types are screws, bolts, studs and nuts. bolt is an externally threaded fastener that is inserted through holes in the parts and screwed into a...
–Giventheresistanceweldingtrainingmaterial,youwillbeabletoidentifyandexplaingeneralresistanceweldingprinciplesandconceptstohelpimprovetheweldingqualityofvariousresistance-weldedproducts.5 Section2:PerformanceObjectives •EnablingObjectives –Discussresistanceweldingsafety.–Identifyresistanceweldingequipmentandexplainitsoperation...
Uses•Carbonsteels,lowalloysteels,stainlesssteels,mostaluminumalloys,andzincbasedcopperalloyscanbeweldedwiththeMIGWelder.•Canweldverythinsectionsandmetalsthatcannotbeeasilyweldedwithothertypesofwelding.WeldingArea WELDINGAREA Helmets ElectricalOutlet Ventilation Gloves Tablefor SafetyConcerns •Alwayswearnon-...
Residential,commercial,andindustrialconstruction Sheetmetal Steelmillequipment Tanksandboilers Toolsanddies Watercraft IndustriesWhereWelding isanAdvantage Occupations Employmentfoundinmanytypesofbusinessesthatsupplyprojectequipment Stamping Finishing Forming Fabrication ...
• A plasma is produced between the tungsten cathode and the base metal which heats the base metal to its melting point • Filler metal can be added to the weld pool Tungsten Inert Gas (MIG) Tungsten Inert Gas (MIG) BASE METAL PUDDLE ...