Гричин С.В., Ульянова О.В. - Английский язык для инженеров сварочного производства, страница 3

Welding processDesigncourse is to introduceselection. Types of weldedwelding engineers to thejoints. Welding Accessibilitysubject of welding design.and Inspection. EconomicalMany factors have to beAnalysis. Design information.considered in this issue.Welding symbols. CaseThese factors include:studies.consumer requirement,technical specifications, andenvironmental andeconomical constrainsWelding processes: ShieldedWeldingThe main objective of thismetal Arc welding, ArcFundamentals course is to familiarizeengineers and inspectors to welding, Gas tungsten Arcwelding, Submerged Arcvarious aspects related towelding & Oxyfuel welding &welding techniques,electric resistance.

Cuttinginspection and qualityprocesses: Oxygen cutting,procedures in weldingplasma cutting and laserindustry. The course iscutting. Inspection ofdesigned for engineers ofweldments: Nondestructivescientists with no or littletesting of welments.experience in the weldingMechanical testing offield.14WeldingInspectionweldments (tensile, bending,impact).Significance of weldThe course discusses bothqualification inspections and discontinuities.

Weldinginspection (non-destrutiveon-line inspections ofwelded joints. These include testing techniques: surfaceinspection, magnetic particle,mechanical tests (tension,volumetric, radiography, andbending, impact, ...etc, andultrasonic). Destructive testingnon destructive tests.techniques: hardness, tension,bending, ...etc. The control ofquality during shop operations.The control of quality duringsite welding.NonDestructivetestingCertification:MagneticParticle &LiquidPenetrantTesting (MT& PT)Level I: Is to train inspectorsto be able to pass level Iexamination and to be ableto inspect using the chosentechnique. Level II: Is toupgrade level I inspectors tobe able to pass level IIexamination and to be ableto inspect, write a report, etcin the chosen technique.WeldingMetallurgyThe course delineates themain changes in themicrostructure and/or themorphology of the metalsand alloys during weldingthat lead to changes inproperties. Alloys discussedin the course include alltypes of steels, Cast Iron,Nickel, Copper alloys, ...etc15Physical principals of test.Processing.

Test equipmentand materials. Codes,standards, procedures andsafety. Test physicalprincipals. Equipment andradiation source. Radiographicrecording. Work parametersand conditions. Defectology.Selection of techniques. Testmethods according tostandards. Personal safety andprotection.Heat flow in welding. Effectof pre-and-post weld heattreatment. Introduction towelding metallurgy(hardenability andweldability). Metallurgy ofsteels. Welding of ferrousalloys: Carbon-steels, Lowalloy steels, Stainless steels,and Cast Iron. Welding of nonferrous alloys: Al- Ni- andCu-alloys.

Identification andspecifications of welding fillerWeldingQualityAssuranceFor each application, thewelding process iscontrolled by specific codeor standard. The courseincludes discussions ofASME boiler and pressurevessel code AWS steelstructure code and otherstandards.WeldingTechniquesSelection of the weldingprocess is very important.The course discusses thevariables of each weldingprocess and gives directionsfor selecting the properprocess for specificapplication. Weldingprocesses discussed include:SMAW, GMAW, GTAW,etc.The highest level ofcertification in the field ofweldingAWSCertifiedweldingEngineerVocabularytechniquecase studyoxyfueltensile testbending testimpact testdiscontinuityvolumetricmetals. Case studies.Welding co-ordination: tasks& responsibility.

Qualityrequirements for welding.Qualification of weldingprocedures and welders.International codes andstandards. Mechanical testingof welds. Non-destructivetesting of welds. Documentsfor weld quality assurance.Case studies.Overview of weldingtechniques and processes.Conventional techniques: arc,Oxy fuel and resistancewelding. Non-conventional:plasma, electron beam, laserwelding. Flame and arc cuttingof metals.

Computerapplications in welding. Casestudies.To get certified as a weldingengineer you need to attendfour exams: Fundamentals ofscience. Applied science.Fundamentals of welding.Applied welding.1) техника, способ, технические приемы 2) метод,методика,учебный пример, разбор конкретного случаягазоплазменныйиспытание на растяжениеиспытание на изгибиспытание на ударную вязкостьотсутствие непрерывности, нарушениепоследовательности, несплошностьобъемный16hardnesstensionsite weldingheat flowheat treatmentwelding metallurgyhardenabilityweldabilitynon-ferrousalloyASMEAWS23твердость, прочность, сопротивляемость(механическим воздействиям)натяжение, растяжение, растягивание, удлинениемонтажные сварочные работытепловой потоктермическая обработкаметаллургия сварки1) закаливаемость 2) прокаливаемость3) способность к закаливаниюсвариваемостьцветной (о металле), не содержащий железасплавсокр.

от American Society of Mechanical EngineersАмериканское общество инженеров-механиковсокр. от American Welding Society Американскоесварочное обществоTranslate the following sentences into Russian.1. Кислородная, плазменная и газовая резка изучаются в курсе «Основысварочного производства».2. Методика проведения разрушающих испытаний изучается в курсе«контролер сварочного участка» («приемщик сварочных изделий»).3.

К традиционным типам сварки относятся: электродуговая,кислородно-газовая и контактная электросварка.4. Каждый сварщик должен знать правила личной безопасности ииспользовать индивидуальные средства (equipment) защиты, а такжеразбираться в международных кодах и стандартах.5.

Во время сварки происходит изменение микроструктуры металла, чтоприводит к изменению его свойств.6. При проведении монтажных, сварочных работ особенно важноконтролировать качество шва.24Match the words (a-h) with definitions (1-8).a) alloy, b) joint, c) inspection, d) welding, e) laser, f) property, g) plasma,h) arc1. Joining pieces of metal (or nonmetal) at faces rendered plastic or liquid byheat or pressure (or both).172. A junction or mode of joining parts together; b) the place where two thingsare joined together3. The luminous arc or bridge across a gap between two electrodes when anelectric current is sent through them.4.

A careful, narrow or critical examination or survey; b) an officialexamination.5. An instrument which amplifies light waves by stimulation to produce apowerful, coherent beam of monochromatic light, an optical maser.6. Metal blended with some other metallic or nonmetallic substance to give itspecial qualities, such as resistance to corrosion, greater hardness, or tensilestrength.7. Peculiar or inherent quality.8. A hot, ionized gas containing approximately equal numbers of positiveions and electrons.Writing25Make a description of the welding course you are following at theUniversity.

Use the information in Activity 22 as an example.The name of the courseThe course descriptionThe course outline………Reading 426You will read a text about underwater welding. Before you read makea list of questions which you would ask about this career opportunity if youwere going to try it.27Read questions (A – F) commonly asked by those who have expressedan interest in underwater welding, but were unsure how to get start. Thenread the answers (1 – 6) provided by AWS. Match each question with thesuitable answer. The first is done.A.What are the age limitations of a welder-diver?B.I am already a certified diver, what other training do I need to qualifyas a welder-diver?18C.What skills are prerequisite to entering the field of underwaterwelding?D.What salary can I expect to make as a welder-diver?E.I am a certified surface welder, what other training do I need to qualifyas a welder-diver?F.What future career opportunities are there for an experienced welderdiver?Taking the Plunge:A Guide to Starting an Underwater Welding Career1CThe skills suggested for entering thefield of underwater welding canbest be defined by the followingtypical description of a welder-diverfrom the AWS D3.6 Standard."Welder-diver: A certified welderwho is also a commercial diver,capable of performing tasks associated with commercial subsea work, weldsetup and preparation, and who has the ability to weld in accordance with theAWS D3.6." By description, an experienced welder-diver must possess:commercial diving skills (i.e., be familiar with the use of specializedcommercial diving equipment, have an understanding of diving physiology,diving safety, rigging, the underwater environment, communication, etc.);weld setup and preparation skills (i.e., the ability to perform tasks typicallyassigned to a fitter or rigger, such as materials alignment and materialspreparation including beveling, stripping of concrete, fitting a steel patch orrepair plate, etc.,); and the ability to certify to a required underwater weldprocedure.2The majority of work performed by an average welder-diver does notinvolve the welding operation itself, but rather executing the tasks that leadup to and follow the actual welding activities.

Except under specialcircumstances, a welder-diver in most cases must posses both certifiedwelder skills and commercial diving skills. It is suggested that if you have noprior commercial diving experience you should attend one of the recognizedcommercial diving schools.

The candidate may be required to pass a divingphysical prior to school acceptance and in some cases a written exam. It issuggested that a dive physical be taken regardless, to avoid going through the19expense of training only to later find you have a disability that prevents yourentering the profession.3The welding processes, classes of weld and qualification testsassociated with underwater welding are described in ANSI/AWS D3.6. Werecommend the specification as a reference for weld procedure and welderqualification.

It is also a good source of other helpful information. If you arealready certified as a "commercial diver" and work for a company that offersunderwater welding services, it is recommended that you communicate toyour company your career objectives and ask what welder skills they arelooking for. If you are certified as a "scuba diver", it is suggested that youattend a commercial diving school. Sport dive training does not include thesafe use of commercial diving equipment, offshore commercial workenvironment/safety, and other education. Underwater welding is a skill youalso have to master once you obtain the basic commercial diving skillsrequired.4There is no age restriction on commercial welder-divers.