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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” IS 15777 (2008): Selection of hacksaw tooth for metal cutting - Recommendations [PGD 32: Cutting tools] “!ा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” IS 15777 : 2008 CJOfHri1'4 4HCfJ ~Cf>fbT*~ ~ amT*~ Cf)J~-~ Indian Standard SELECTION OF HACKSAW TOOTH FOR METAL CUTTING - RECOMMENDATIONS ICS 25.100.40 © BIS2008 BUREAU OF INDIAN STANDARDS MANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 June 2008 PriceGroup1 MillingCutters, Saws,GearCutting Toolsand Broaches Sectional Committee, PGD II FOREWORD This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Milling Cutters,Saws,GearCuttingToolsand BroachesSectional Committeehadbeen approved bytheProductionand GeneralEngineering DivisionCouncil. Thisstandardisformulated basedon theprevalentpractice followed byIndian industry. Forthepurpose ofdeciding whether aparticular requirementofthis standardiscomplied with, thefinal value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS2: 1960'Rulesforrounding offnumericalvalues(revised)'.The number ofsignificantplacesretained inthe roundedoffvalueshould bethesame asthatofthespecified value inthis standard. IS 15777:2008 Indian Standard SELECTION OF HACKSAW TOOTH FOR METAL CUTIING - RECOMMENDATIONS 1SCOPE This standard covers the recommendations for selection oftooth,feed rate and other parameters for hacksaw cuttingfor different materials. 2 RECOMMENDED FEED,SPEEDANDPITCH OFHACKSAW BLADE SINo. Material Feed Speed Pitch Pressure mm/Stroke Strokes/min ForMaterialUpto ForMaterial kgf andIncluding50 Over50mm mm i) Aluminium: a)Pure 25 0.075-0.3 100-135 4 b)Alloy 25 0.075-0.3 100-150 4 ii) Brass: a)Freemachining 25 0.075-0.3 120-150 4,2.5 4 b)Hard 25 0.075-0.15 100-135 4,2.5 4 c)Tubing 120-150 2.5, 1.8 2.5, 1.8 iii) Bronze: a)Commercial 25 0.075-0.15 90-120 4,2.5 4 b)Manganese 25 0.075-0.15 60-90 4,2.5 4 iv) Copper 25 0.15-0.225 90-120 4,2.5 4 v) Iron: a)Pipe 25 0.075-0.225 90-120 2.5, 1.8 2.5,1.8 b)Cast 25 0.225-0.3 90-120 4,2.5 6.3,4 c) Malleable 25 0.15-0.225 90 4,2.5 4 vi) Magnesium 25 0.225-0.375 120-150 4 6.3 vii) Nickel silver 25 0.075-0.15 60 4,2.5 4 viii) Nickel alloy: a)Nickel 25 0.075-0.225 60-90 4,2.5 4 b)Inconol 25 0.075-0.225 50-80 4,2.5 4 c)Monel 25 0.075-0.225 60-90 4,2.5 4 ix) Steel: a)Alloy 25 0.075-0.225 60-120 4,2.5 4 b)Carbon tool 25 0.075-0.225 60-90 4,2.5 4 c)Coldrolled 25 0.15-0.3 100-135 4 4 d)Hotr('lI~d 25 0.15-0.3 100-135 4 4 e) Highspeed 25 0.075-0.15 60-90 4,2.5 4 f) Machinery 25 0.15-0.225 100-135 4,2.5 4 g)Stainless 25 0.075-0.225 60-90 4,2.5 4 h)Structural 25 0.075-0.15 90-135 4,2.5 4,2.5 j) Tool 25 0.075-0.225 60-90 4,2.5 4 x) Pipeand tubing 25 0.15-0.225 90-135 2.5, 1.8 4, 1.8 NOTE- Powerhacksawlechniques: a) Ifteethrippingoccur,reduce pressureby10percent. IS15777 :2008 b) Ifpitchisloweredthanspecified. thecuttingefficiency willreduce. c) Correctbladeinstallationisalsoimportant.Pinsshouldbeasperpinholedimensionstohelpdistribute thepressureevenly andpreventpinholebreakage. d) Whentighteningthe'bladeholder'.makesurethetensioningscrewiswelllubricated,thenadjust thescrewslowlyatfirst toallowpinsto'seat'. e) Properblade tension isessential andisachievedwiththepinswellseated intheirholespriortofinaltensioning. f) Sawing (cutting) fluidshould alwaysbe used,except whencuttingcast ironand bronze.Agood sawing fluidkeepsthe cuttingedge coolandaidsinclearingawaychips. g) Neverstop ahacksaw machinewhile thebladeisinthecut.Ifthe blade hastobe backed outof thecut,doso with the machine stillrunning. 2 BureauofIndianStandards BIS is a statutory institution established under the Bureau ofIndian Standards Act. 1986 to promote harmonious development ofthe activities ofstandardization, marking and quality certification ofgoods andattendingtoconnected mattersinthecountry. Copyright BIS has the copyright ofall its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, ofnecessary details, such as symbols and sizes, type or grade designations. Enquiriesrelatingtocopyright beaddressed totheDirector(Publications),BlS. ReviewofIndianStandards Amendmentsare issued tostandards astheneedarises onthebasis ofcomments. Standardsarealso reviewed periodically;astandard along with amendments isreaffirmed when such review indicates that no changes are needed; ifthe review indicates that changes areneeded, it istaken upfor revision. Users oflndian Standards shouldascertainthattheyareinpossessionofthelatestamendmentsoreditionbyreferring tothelatestissueof 'BIS Catalogue'and 'Standards:Monthly Additions'. ThisIndianStandard hasbeen developed fromDoc:No. PGDIBPD11(0502). 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