इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” ISIHB MMAW (1965): ISI Handbook of Manual Metal-arc Welding for Welders [MTD 12: Welding Applications] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” MANUAL METAL-ARC WELDERS’ HANDBOOK As in the Original Standard, this Page is Intentionally Left Blank HAN\DBOOK .’ OF MANUAL META,L-ARC WELDING FOR WELDERS BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 3unua~y PRICE Rs 120*0_0 I965 0 BUREAU OF INDIAN STANDARDS, 1965 I Edition I965 Second Reprint DECEMBER l@Bl UDC 621-791-75 Printed in India by Simco Printing Press, Delhi and Published by the Bureau of Indian Standards, New Delhi 110002 CONTENTS PAOB FOREWORD . . . !hCTION 1. INTRODUCTION . . . . . . 9 2. WELDINO EQuIpMENTA ND Accmso~~~s ... ... 15 3. WELDINO TOOLS AND GAUOFS . . . ... ... 24 4. ARC WELDINO ELECTRODES . . . ... ... 35 5. WELDINO Posmom AND TYPES OF WELD ... ... 53 6. WE&NO PROCEDUREASN D TEOHM(LUES ... ... 62 7. WEmmO METALLURGY . . . ... ... 90 8. DEFECTISN WELDS . . . . . . ... ... 10s 9. hPECTION AND TESTINGO F ~%Z,DS ... ... 120 10. SAFETYIN WELDINQ . . . ... ... 134 11. COST ESTIMATINOA ND ECONOMICOS F WEIJXNO . . . 139 APPENDIXA DEFIN ITIONOSF COMMONW ELDINO TERM . . . 146 APPENDIXB THEORY OPAC AND DC CURRENTS . . . . . . 152 APPENDIX c hDIAN STANDARDSO N WELDINO . . . . . . 155 APPE&XX D EQLTIVALENfTp s VALUES OF METRIC VALUESU SED IN THE HMVDBOOK . . . . . . . . . . . . 157 APPENDIXE COMPOSITIONO F STRU~RAL WELDINO SECXIONAL CoMMITTIm,S MDC 15 . . . . . . . . . . . . 159 As in the Original Standard, this Page is Intentionally Left Blank
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