02695nam a22002177a 4500 1052 1052 OSt 20190508161216.0 170712b xxu||||| |||| 00| 0 eng d 978-93-82992-13-4 National Instructional Media Institute (NIMI) 36280 24/04/2017 12/06/17 BSDU English BSDU 671.52092 WEL National Instructional Media Institute (NIMI) Welder 1st Semester : Trade Theory Chennai National Instructional Media Institute (NIMI) 2016,c2014 180 Contents : Module 1 : Fitting & Sheet Metal -General discipline in the institute -Hand tools -Grinder pedastal and Bench -Hacksaw frames and blades -Files-Grades and specification -Sheet metal shop safety rules -Rivets and Riveting Module 2 : Gas Cutting -History of welding -Principle of gas cutting and application -Different type of common faults in gas cutting Module 3 : Gas Welding -Chemistry of oxy-acetylene flame -Gases used for welding and gas flame combinations -Properties of metals -Production of calcium carbide -Carbide to water type acetylene gas generator -Acetylene gas purifier -Oxygen gas -Properties and Production Oxygen gas cylinder -Safety rules for gas cylinders -Welding regulator -Rightward technique of oxy-acetylene gas welding -Faults in gas cutting -Filler rods used in gas welding -Flashback and backfire -Gas welding Fluxes and Function -Welding of aluminium and its alloys -Stainless steel-Properties -types and weld ability -Welding of brass -Cast Iron -Properties-type and weld ability -Module 4: Arc Welding -Introduction to welding (fusion, non-fusion and pressure -Arc welding Accessories Welding terms & its Definition -Shielded Metal Arc Welding -Methods of cleaning the base metals before welding -Basic welding joints and weld -Arc length and its effects -Basic welding positions -Arc welding machines -AC/DC welding rectifier its construction -Power source selection criteria -Inverters -Arc blow its Causes and Remedial Measures -Distortion and its control -Defect in Arc welding -its effort -Arc welding electrodes -Composition /Characteristics Flux -Sizes of Mild steel Electrodes -Choice and storage of electrodes -Coding of electrodes as per BIS,AWS and BS153 -Weld symbol and welding symbol -Description and use -Stainless steel welding ,Procedure and defects -Heat treatment Module 5: Metallic Arc cutting and Gouging -Metallic arc cutting and gouging Fabrication DGT, MSDE, Govt of India ddc BK 0 0 ddc 0 0 CTS BSDU BSDU SDL 2017-07-12 170.00 0 671.52092 WEL 013590 2020-02-12 00:00:00 2017-07-12 BK 0 0 ddc 0 0 CTS BSDU BSDU SDL 2017-07-12 170.00 0 671.52092 WEL 013591 2020-02-12 00:00:00 2017-07-12 BK 0 0 ddc 0 1 RB BSDU BSDU SDL 2017-07-12 170.00 0 671.52092 WEL 013592 2020-02-12 00:00:00 2017-07-12 BK 0 0 ddc 0 0 CTS BSDU BSDU SDL 2017-07-12 170.00 0 671.52092 WEL 013593 2020-02-12 00:00:00 2017-07-12 BK 0 0 ddc 0 0 CTS BSDU BSDU SDL 2017-07-12 170.00 0 671.52092 WEL 013594 2020-02-12 00:00:00 2017-07-12 BK 0 0 ddc 0 0 CTS BSDU BSDU SDL 2017-07-12 170.00 0 671.52092 WEL 013595 2020-02-12 00:00:00 2017-07-12 BK 0 0 ddc 0 0 CTS BSDU BSDU SDL 2017-07-12 170.00 0 671.52092 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