ASME B94 52M-1999 Specifications for Hacksaw Blades《弓锯条规范》.pdf

1、A N A M E R I C A N N A T I O N A L S T A N D A R DSPECIFICATIONS FOR HACKSAWBLADESASME B94.52M-1999(Revision of ASME B94.52M-1994)ASME B94.52M-1999 5/10/00 2:32 PM Page 3p. 1 12-21-99 14:57:23 Unit: ucp Textfile: b9452m$cpe p. 1Date of Issuance: January 28, 2000This Standard will be revised when th

2、e Society approves the issuance ofa new edition. There will be no addenda or written interpretations of therequirements of this Standard issued to this edition.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accred

3、ited as meeting the criteria forAmerican National Standards. The Standards Committee that approved the code or standardwas balanced to assure that individuals from competent and concerned interests have had anopportunity to participate. The proposed code or standard was made available for public rev

4、iewand comment that provides an opportunity for additional public input from industry, academia,regulatory agencies, and the public-at-large.ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device,or activity.ASME does not take any position with respect to the validi

5、ty of any patent rights asserted inconnection with any items mentioned in this document, and does not undertake to insure anyoneutilizing a standard against liability for infringement of any applicable letters patent, nor assumeany such liability. Users of a code or standard are expressly advised th

6、at determination of thevalidity of any such patent rights, and the risk of infringement of such rights, is entirely theirown responsibility.Participation by federal agency representative(s) or person(s) affiliated with industry is not tobe interpreted as government or industry endorsement of this co

7、de or standard.ASME accepts responsibility for only those interpretations of this document issued inaccordance with the established ASME procedures and policies, which precludes the issuanceof interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retr

8、ieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2000 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.p. 3 12-21-99 14:57:40 Unit: ufw Text

9、file: b9452m$fw p. 3FOREWORDThe first Simplified Practice Recommendation to cover hacksaws was issued by theDepartment of Commerce in 1928, in cooperation with the hacksaw industry. The changingrequirements of the marketplace were met by six subsequent revisions, the last revisionbeing in 1962.In 19

10、62, recognizing the interest of European industry in promoting an internationalstandard, the United States hacksaw industry began to work toward the approval of itsstandard under the Institutes existing standards method of procedure. The existing standard,ANSI B121.1-1970, was the result of this wor

11、k.As a result of work in the 1970s in the area of international standards, the Hack andBand Saw Manufacturers Association of America, which is a member of the committeefor the promulgation of the standard (ISO TC29 WG), felt that additional information shouldbe available to manufacturers, distributo

12、rs, and users that would enable them to produce,sell, and utilize better hacksaw blades.Added sections included:(a) suggested composition guidelines for standard, composite, alloy, and high-speed steelhacksaws;(b) hardness limits;(c) tooth form suggestions;(d) tooth form set tolerances;(e) flatness

13、tolerances.The present standard is a result of submittals by the hacksaw industry to the ASMEStandards Committee B94. This Committee achieves consensus of the standards by meansof a Subcommittee which develops standards under procedures accepted by the AmericanNational Standards Institute.The Americ

14、an Society of Mechanical Engineers is the sponsor for B94 and supervisesthe promulgation of the standard with the expertise furnished by individual members. ThisStandard was designated B94.52M and was approved as an American National Standardon April 14, 1999.iiiThis page intentionally left blank.p.

15、 5 12-21-99 15:00:22 Unit: ucr Textfile: b9452m$cr p. 5ASME STANDARDS COMMITTEE B94Cutting Tools, Holders, Drivers, and Bushings(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERSP. Bourg, ChairP. Esteban, SecretaryCOMMITTEE PERSONNELP. Bourg, Tivoly, Inc

16、.A. M. Bratkovich, The Association for Manufacturing TechnologyE. J. Czopor, E and it also sets out the determination of:Cr 3.50%(a) hacksaw blade dimensions in all types of steel;W + 1.8Mo 11.75%(b) tooth form and set;V 0.80%(c) blade straightness and minimum hardness charac-teristics.(b) minimum t

17、otal alloy content based on tungstenequivalents:13Cr+6.2V+W+1.8Mo(1) for grades containing less than 5% cobalt,22.50;2 FIELD OF APPLICATION(2) for grades containing 5% cobalt or more, 21.00.This Standard applies to high-speed steel, composite,hardening response: ability to be austenitized andand sta

18、ndard steel hand hacksaw blades, and high-then tempered at a temperature not less than 510Cspeed steel and composite steel power hacksaw blades.(950F), to yield a fine grain structure (Snyder-Graffgrain size 8 minimum) and a minimum hardness of62 RC.3 DEFINITIONSNOTE: Requirements are from ASTM A 60

19、0-79.For the purpose of this Standard, the followingdefinitions are set forth.overall set: the total width of the extreme distanceof the opposite teeth, taking into account the set oncomposite blade: consists of a high-speed steel cuttingeither side of the blade which determines the overalledge weld

20、ed to an alloy steel back. The cutting edgewidth of cut (see Fig. 1).after heat treatment shall not be less that 62 RockwellC, and the body shall not be harder than 52 Rockwell C. pitch: the distance between the apices of adjacentteeth.hacksaw blade: a steel saw blade 250 mm (10 in.)Teeth per unit l

21、ength is the number of completeor more in length having a pinhole or pinholes nearteeth per 25 mm (1 in.) length.each end, the cutting edge or edges of which consistsNOTE: Pitch and teeth per inch are reciprocals of each other.of teeth which are set, and which is hardened orhardened and tempered by

22、any process at the cuttingedge or edges, or throughout the entire blade.standard steel: a steel with carbon content in therange 0.7% to 1.3% and with other alloying elementshardness: hardness testing of a hacksaw is a special-not to exceed a maximum of 2.5%. The hardness atized art and can be accomp

23、lished by the followingthe tip of the tooth shall be at least 62 Rockwell C.methods: Superficial Rockwell 15N, Vickers, or microhardness. Any of the readings taken from the above tooth set: the projection of the teeth from the sideof the blade to provide cutting clearance (see Fig. 1).methods can th

24、en be converted to Rockwell C equiva-1p. 2 12-21-99 15:09:14 Unit: u1 Textfile: b9452m$01 p. 2SPECIFICATIONS FOR HACKSAW BLADESASME B94.52M-1999FlankRoot radiusGulletCutting edgeFaceSetSetThicknessSideSideTooth toTooth PitchOverall setWidthFIG. 1 TOOTH FEATURESside: the flat surface between the toot

25、hed edge andthe back edge (see Fig. 1).4 TOOTH FORM AND SETFIG. 2 REGULAR OR STANDARD TOOTHFORM4.1 Tooth FormTooth form may be varied to suit the individual3.1 Tooth Nomenclaturemanufacturer, the user, and the material to be cut.Regular or standard tooth form has a zero degreecutting edge: the trans

26、verse edge formed by the inter-rake angle and full round gullets and is the most widelysection of the flank and the face (see Fig. 1).used design (see Fig. 2).face: that surface of the tooth adjacent to the cuttingedge on which the chip impinges as it is severed from4.2 Tooth Setthe work (see Fig. 1

27、).The basic types of tooth set are listed below:flank: that surface behind the cutting edge which(a) Alternate. This is a transverse setting of individualextends to the root radius (see Fig. 1).teeth, alternately to the right and the left (see Fig. 3).gullet: the space bounded by the face, root radi

28、us,(b) Raker. This is a transverse setting of individualand flank of a tooth which permits the removal of theteeth, one to the right, one to the left, and one unset,severed chip (see Fig. 1).continuing the same sequence of settings (see Fig. 4).(c) Wavy. This is a transverse setting of groups ofrake

29、 angle: the incline of the face of the nonset toothfrom the perpendicular. teeth to the left and right (see Fig. 5).2p. 3 12-21-99 15:09:14 Unit: u1 Textfile: b9452m$01 p. 3SPECIFICATIONS FOR HACKSAW BLADES ASME B94.52M-1999FIG. 5 WAVY TOOTH SETFIG. 3 ALTERNATE TOOTH SETFIG. 6 MODIFIED RAKER TOOTH S

30、ETFIG. 4 RAKER TOOTH SET(d) Modified Raker. This is a transverse setting ofindividual teeth, one to the right, one to the left, oneCunset; in the subsequent series, the setting is reversed(see Fig. 6).FIG. 7 PINHOLE LOCATIONS(e) Variable Raker. Variable Raker set is a specialset used on variable pit

31、ch teeth. Teeth are alternatelyset to the right and to the left with one unset toothin each variable pitch sequence. The number of setteeth between unset teeth varies with tooth specifications(see Fig. 8).FIG. 8 VARIABLE RAKER TOOTH SET4.3 Application6 PINHOLE LOCATIONSWavy set is used generally on

32、24 and 32 teeth/25Pinholes on hacksaws may be located on or belowmm hand hacksaw blades. Other tooth sizes generallycenter of the blade at manufacturers option (see Fig. 7).use raker, modified raker, or alternate set.7 APPLICATION CONSIDERATIONS5 DIMENSIONS AND TOLERANCESFor power hacksaw blades, ma

33、chine maker recom-mendations should be followed scrupulously. MachinesTables 1 through 5 provide the dimensions andtolerances allowed by this Standard. should be properly maintained.TABLE 1HAND HACKSAW BLADESCenter-to-Nominal Overall Center PinholeNo. of TeethLength Width Thickness Length Pinholes D

34、iameterper 25 mmmm in. (1 in.) mm in. mm in. mm in. mm in. mm in.250 10 18, 24, 32 13.0120.60 0.025 264 1038251 9784 0.156300 12 14, 18, 24, 32 13.0120.60 0.025 314 1238302 11784 0.1563p. 4 12-21-99 15:09:14 Unit: u1 Textfile: b9452m$01 p. 4SPECIFICATIONS FOR HACKSAW BLADESASME B94.52M-1999TABLE 2DI

35、MENSIONAL TOLERANCES FOR HAND HACKSAW BLADESToleranceBlade Dimension mm in.Width +0, 0.5 +0, 0.020Thickness, high-speed steel 0.08 0.003Thickness, standard steel 0.03, 0.08 +0.001, 0.003Overall length +0, 4.8 +0, 316Pinholes, center-to-center +0.4, 3.9 +164,532Pinholes diameter +0.3, 0 +0.010, 0TABL

36、E 3SOLID HIGH-SPEED POWER SAW BLADESCenter-to-Nominal Center PinholeNo. of TeethLength Width Thickness Overall Length Pinholes Diameterper 25 mmmm in. (1 in.) mm in. mm in. mm in. mm in. mm in.300 12 14, 18 16580.80 0.032 318 1212302 11784.78 0.188300 12 10, 14 25 1 1.27 0.050 324(1) 1234302 11787.1

37、4 0.281350 14 10, 14 25 1 1.27 0.050 365(1) 1438343 13127.14 0.281350 14 6, 10 32 1141.58 0.062 368 1412343 13127.14 0.281350 14 6 38 1121.91 0.075 368 1412343 13127.14 0.281425 17 14 25 1 1.27 0.050 441(1) 1738419 16127.14 0.281425 17 10 32 1141.58 0.062 445 1712419 16127.14 0.281450 18 6, 10 32 11

38、41.58 0.062 470 1812445 17127.14 0.281450 18 4, 6 38 1121.91 0.075 470 1812445 17127.14 0.281450 18 4, 6 44 1342.24 0.088 476 1834445 17127.14 0.281525 21 4, 6 44 1342.24 0.088 565 2214533 21 7.14 0.281NOTE:(1) For these sizes, alternate overall lengths of 327 mm (1278in.), 368 mm (1412in.), and 445

39、 mm (1712in.) respectively, areacceptable.4p. 5 12-21-99 15:09:14 Unit: u1 Textfile: b9452m$u1 p. 5SPECIFICATIONS FOR HACKSAW BLADES ASME B94.52M-1999TABLE 4COMPOSITE POWER SAW BLADESCenter-to-Nominal Width Center PinholeNo. of TeethLength Note (1) Thickness Overall Length Pinholes Diameterper 25 mm

40、mm in. (1 in.) mm in. mm in. mm in. mm in. mm in.300 12 14, 18 19340.80 0.032 318 1212302 11784.78 0.188300 12 10, 14 29 1181.27 0.050 324(2) 1234302 11787.14 0.281350 14 10, 14 29 1181.27 0.050 365(2) 1438343 13127.14 0.281350 14 6, 10 35 1381.58 0.062 368 1412343 13127.14 0.281350 14 6 41 1581.91

41、0.075 368 1412343 13127.14 0.281425 17 10 35 1381.58 0.062 445 1712419 16127.14 0.281450 18 6, 10 35 1381.58 0.062 470 1812445 17127.14 0.281450 18 4, 6 41 1581.91 0.075 470 1812445 17127.14 0.281450 18 4, 6 48 1782.24 0.088 476 1834445 17127.14 0.281525 21 4, 6 48 1782.24 0.088 565 2214533 21 7.14

42、0.281NOTE:(1) Actual size width is shown; however, manufacturers catalogs relate these size widths the same as solid high-speed powersaw blades.(2) For these sizes, alternate overall lengths of 327 mm (1278in.), 368 mm (1412in.), and 445 mm (1712in.), respectively, areacceptable.TABLE 5DIMENSIONAL T

43、OLERANCES FORPOWER HACKSAW BLADESToleranceBlade Dimensions mm in.Thickness 0.08 0.003Overall length 1.6 116Pinholes, center-to-center 0.8 132Pinholes diameter +0.25, 0 +0.010, 0Width 0.8 +1320.8 1325This page intentionally left blank.p. 7 12-21-99 15:21:31 Unit: uapi Textfile: b9452m$ap p. 7ASME B94

44、.52M-1999MANDATORY APPENDIX IHARDNESS CONVERSION TABLEHardness Conversion TableRC Scale R15N Scale Vickers 10KG25 72.2 26637 78.8 36338 79.4 37262 91.1 746GENERAL NOTE: Source: Machinerys Handbook, 22nd Edition.7This page intentionally left blank.p. 1 12-21-99 15:22:09 Unit: uBM Textfile: b94$cv3 p.

45、 1AMERICAN NATIONAL STANDARDS FOR CUTTING TOOLSReamers B94.2-1995Straight Cut-Off Blades for Lathes and Screw Machines .B94.3-1965(R1995)Knurling .B94.6-1984(R1995)Hobs . B94.7-1980 (R1995)Inserted Blade Milling Cutter Bodies B94.8-1967(R1998)Taps: Ground and Cut Threads (Inch and Metric Series) B94

46、.9-1999Twist Drills .B94.11M-1993Punches Basic Head Type B94.14-1968(R1995)Punches Basic Head Type (Metric). B94.14.1-1977(R1995)Retainers Basic Ball-Lock, Punch and Die Button, Light and Heavy Duty .B94.16-1987(R1995)Retainers Basic Ball-Lock, Punch and Die Button, Light and Heavy Duty (Metric) B94

47、.16.1-1978(R1995)Gages Functional, Ball-Lock Punches, Die Buttons, and Retainers .B94.17-1987(R1995)Gages Functional, Ball-Lock Punches, Die Buttons, and Retainers (Metric) . B94.17.1-1977(R1995)Punches Basic Ball-Lock Light and Heavy Duty .B94.18-1987(R1995)Punches Basic Ball-Lock Light and Heavy D

48、uty (Metric) B94.18.1-1977(R1995)Milling Cutters and End Mills.B94.19-1985Gear Shaper Cutters .B94.21-1968(R1995)Punches Variable, Head Type .B94.22-1968(R1995)Punches Variable, Head Type (Metric) . B94.22.1-1977(R1995)Punch Guide Bushings Variable, Press Fit B94.23-1969(R1995)Die Buttons Basic Tape

49、r Relief, Press Fit .B94.27-1970(R1995)Die Buttons Basic Taper Relief, Press Fit (Metric).B94.27.1M-1983(R1995)Die Buttons Basic Straight Relief, Press Fit .B94.28-1970(R1995)Die Buttons Basic Straight Relief, Press Fit (Metric).B94.28.1M-1984(R1995)Die Buttons Basic Ball-Lock.B94.29-1970(R1995)Die Buttons Basic Ball-Lock (Metric) . B94.29.1-1977(R1995)Die Buttons Variable, Press FitB94.30-1970(R1995)Steel Rotary Slitting Knives and Steel