BS 3821-4-1982 Specification for hardmetal dies and associated hardmetal tools - Dimensions and tolerances of as-sintered hardmetal pellets used in heading dies《硬质合金模具和配套硬质合金工具规范 第.pdf

1、BRITISH STANDARD BS 3821-4: 1982 ISO 5407:1981 Specification for Hardmetal dies and associated hardmetal tools Part 4: Dimensions and tolerances of as-sintered hardmetal pellets used in heading dies ISO Title: As-sintered hardmetal pellets used in heading dies Dimensions and tolerances UDC 621.778.1

2、.073:669.018.25BS3821-4:1982 This BritishStandard, having been prepared under the directionof the Mechanical Engineering Standards Committee, was published underthe authority of the BoardofBSI and comes intoeffecton 30July1982 BSI 12-1999 The following BSI references relate to the work on this stand

3、ard: Committee reference MEE/155 Draft for comment 80/75450 DC ISBN 0 580 12843 1 Cooperating organizations The Mechanical Engineering Standards Committee, under whose direction this BritishStandard was prepared, consists of representatives from the following: The organizations marked with an asteri

4、sk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this BritishStandard: Associated Offices Technical Committee Department of Transport Association of Consulting Engineers Electricity Supply Industry in England an

5、d Association of Hydraulic Equipment Wales Manufacturers Energy Industries Council Association of Mining, Electrical and Engineering Equipment Users Association Mechanical Engineers Federation of Manufacturers of Construction British Compressed Air Society Equipment and Cranes British Electrical and

6、 Allied Manufacturers Health and Safety Executive Association (BEAMA) Institution of Gas Engineers British Gas Corporation Institution of Mechanical Engineers* British Gear Manufacturers Association Institution of Plant Engineers British Internal Combustion Engine Institution of Production Engineers

7、 Manufacturers Association Lloyds Register of Shipping British Pump Manufacturers Association London Transport Executive British Steel Corporation Machine Tool Industry Research Association British Steel Industry* Ministry of Defence Chartered Institution of Building Services National Coal Board Cro

8、wn Agents for Oversea Governments and Oil Companies Materials Association Administrations Process Plant Association Department of Industry (Mechanical Society of Motor Manufacturers and Traders Engineering) Limited Department of Industry (National Engineering Telecommunication Engineering and Labora

9、tory) Manufacturing Association (TEMA) Department of the Environment (PSA) Water-tube Boilermakers Association Department of Trade (Marine Division) British Hard Metal Association British Industrial Fasteners Federation British Independent Steel Producers Electric Cable Makers Confederation Associat

10、ion International Wire and Machinery Association Amendments issued since publication Amd. No. Date of issue CommentsBS3821-4:1982 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii 1 Scope and field of application 1 2 References 1 3 Dimensions 2 4 Tolerance

11、s 3 Publications referred to Inside back coverBS3821-4:1982 ii BSI 12-1999 National foreword This Part of this BritishStandard has been prepared under the direction of the Mechanical Engineering Standards Committee and forms part of a series implementing corresponding International Standards in the

12、development of which the UK has played an active part. This Part of BS3821 is identical with ISO5407 “As-sintered hardmetal pellets used in heading dies Dimensions andtolerances”, published in1981 by the International Organization for Standardization (ISO). Terminology and conventions. The text of t

13、he International Standard has been approved as suitable for publication as a BritishStandard without deviation. Some terminology and certain conventions are not identical with those used in BritishStandards; attention is especially drawn to the following. The comma has been used throughout as a deci

14、mal marker. In BritishStandards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. Cross-references. The Technical Committee has reviewed the prov

15、isions of ISO3252:1975 and ISO5396:1977, to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible f

16、or their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (

17、see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS3821-4:1982 BSI 12-1999 1 1 Scope and field of application This International Standard lays down the dimensions and tolerances of as-sintered hardmetal pellets used

18、 in heading dies. NOTE 1As defined in ISO3252, the term “hardmetal” may be used synonymously with “cemented carbide”. NOTE 2In the United States, the term “nib” is used instead of the term “pellet”. 2 References ISO 3252, Powder metallurgy Vocabulary 1) . ISO 5396, Hardmetal heading dies Terminology

19、. 1) At present at the stage of draft. (Revision of ISO3252:1975.)BS3821-4:1982 2 BSI 12-1999 3 Dimensions NOTE d 1 is the diameter of the finished bore; d 02 is the outside diameter of as-sintered pellet; l 02 is the length of as-sintered pellet. Dimensions in millimetres Diameter of the finished b

20、ore Outside diameter of as-sintered pellet As-sintered pellet lengthl 02 d 1 d 02 over up to and including Series A Series B a 15 20 25 30 35 40 45 50 55 60 70 80 c 90 100 110 120 140 1,50 b 1,75 10 10 1,75 2,10 10 10 2,10 3,00 10 12 3,00 4,00 12 14 4,00 5,00 14 16 5,00 6,00 16 18 6,00 7,00 18 20 7,

21、00 8,00 20 22 8,00 10,00 24 26 10,00 12,00 26 28 12,00 14,00 28 32 14,00 16,00 32 36 16,00 18,00 36 40 18,00 20,00 40 45 20,00 24,00 45 50 a Series B refers to heading dies, washer faced. b Inclusive. c Only for series B.BS3821-4:1982 BSI 12-1999 3 4 Tolerances 4.1 Tolerances of the bore diameter d

22、01of as-sintered pellet 4.2 Tolerances of the outside diameter d 02of as-sintered pellet Values in millimetres Diameter of the finished bored 1 Tolerances on d 01 for as-sintered pellet lengthl 02 over up to and including 15 20 to 30 35 to 50 55 to 80 90 to 120 140 6 0,3 0,7 0,3 0,8 0,3 0,8 0,4 1,0

23、6 10 0,3 0,9 0,3 1,0 0,4 1,1 0,4 1,2 10 14 0,4 1,1 0,4 1,1 0,4 1,2 0,4 1,3 14 18 0,4 1,1 0,4 1,2 0,4 1,3 0,5 1,4 0,5 1,5 18 24 0,4 1,3 0,4 1,4 0,5 1,6 0,5 1,6 NOTEThe tolerances include a grinding allowance of0,3 to0,5mm dependent on the bore diameter and the length of as-sintered pellet. Values in

24、millimetres d 02 Tolerances on d 02 for as-sintered pellet length l 02 15 20 to 30 35 to 50 55 to 80 90 to 120 140 10 12 14 +1,0 +0,4 +1,1 +0,4 +1,1 +0,4 +1,2 +0,4 16 18 +1,1 +0,4 +1,2 +0,4 +1,3 +0,4 20 22 24 +1,3 +0,4 +1,3 +0,4 +1,4 +0,4 +1,6 +0,5 26 28 +1,4 +0,4 +1,5 +0,4 +1,5 +0,4 +1,7 +0,5 32 36

25、 40 +1,5 +0,4 +1,6 +0,4 +1,7 +0,4 +1,8 +0,5 +1,9 +0,5 45 50 +2,0 +0,5 +2,0 +0,5 +2,1 +0,5 +2,2 +0,6 NOTEThe tolerances include a grinding allowance of0,4 to0,6mm dependent on the outside diameter and the length of as-sintered pellet.BS3821-4:1982 4 BSI 12-1999 4.3 Bend of the bore and of the outside

26、 diameter of as-sintered pellet 4.4 Tolerances of the length l 02of as-sintered pellet Dimensions in millimetres As-sintered pellet length l 02 15 20 to 30 35 to 50 55 to 80 90 to 120 140 Permissible bend of the bore and of the outside diameter 0,15 0,2 0,25 0,3 0,35 0,4 Values in millimetres l 02 T

27、olerances onl 02 for as-sintered pellet outside diameterd 02 10 to 18 20 to 28 32 to 50 15 +1,1 +0,4 20 +1,2 +0,4 25 30 +1,3 +0,4 +1,4 +0,4 +1,5 +0,4 35 40 +1,5 +0,4 +1,5 +0,4 +1,6 +0,4 45 50 +1,8 +0,5 +1,9 +0,5 +2,0 +0,5 55 60 +2,2 +0,5 +2,3 +0,5 +2,3 +0,5 70 80 +2,6 +0,5 +2,7 +0,5 +2,7 +0,5 90 100

28、 +3,1 +0,5 +3,1 +0,5 110 120 +3,7 +0,6 +3,7 +0,6 140 +4,2 +0,6 NOTEThe tolerances include a grinding allowance of0,2 to0,3mm on each end dependant on the outside diameter and length of as-sintered pellet.BS3821-4:1982 BSI 12-1999 Publications referred to See national foreword.BS 3821-4: 1982 ISO 540

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