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1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 50-2.5c:1996 Tyres and wheels Part 2: Wheels and rims Section 5c: Specification for road wheels manufactured wholly or partly of cast light alloy for passenger cars Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:47
2、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-2.5c:1996 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 April 1996 BSI 07-1999 First published July 1976 Second
3、 edition April 1996 The following BSI references relate to the work on this standard: Committee reference AUE/4 Draft for comment 94/713765 DC ISBN 0 580 25366 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee AUE/4, Tyre
4、s and wheels for road vehicles, upon which the following bodies were represented: Agricultural Engineers Association Automobile Association British Industrial Truck Association British Pressure Gauge Manufacturers Association British Rubber Manufacturers Association Confederation of Passenger Transp
5、ort UK Department of Transport Freight Transport Association Institute of Road Transport Engineers (Inc) Motor Cycle Industrys Association of Great Britain Ltd. Motor Industry Research Association National Tyre Distributors Association Retread Manufacturers Association Road Haulage Association Ltd.
6、Society of Motor Manufacturers and Traders Ltd. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-2.5c:1996 BSI 07-1999i Contents Page Committees
7、responsibleInside front cover Forewordii 5.1Scope1 5.2References1 5.3Definitions1 5.4Materials1 5.5Protection of magnesium alloy castings and finished wheels2 5.6Tests on completed wheels2 5.7Documentation2 5.8Marking2 5.9Valve holes3 Annex A (normative) Quality control/test schedule6 Annex B (norma
8、tive) Validation procedure6 Annex C (normative) Conformity of production7 Annex D (normative) Tyre fitting test. Procedure for the introduction of new or modified rim profiles7 Annex E (normative) Dynamic cornering fatigue test 7 Annex F (normative) Dynamic radial fatigue test8 Annex G (normative) I
9、mpact test8 Annex H (normative) Testing of finishing systems9 Annex J (informative) Guidance on certain aspects of wheel attachment systems11 Figure 1 Typical wheels3 Figure 2 Wheel nomenclature4 Figure 3 Valve holes5 Figure G.1 Wheel impact machine10 Figure G.2 Machine calibration method11 List of
10、referencesInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-2.5c:1996 ii BSI 07-1999 Foreword This Section of BS AU 50 has been prepared by Technical Committee AUE/4. It supersedes BS A
11、U 50-2.5:1976, which is withdrawn. The increased performance of passenger cars led in the 1970s to the use for the road wheels of light alloys, generally of aluminium or magnesium, which offer a favourable strength to weight ratio. The first edition of BS AU 50-2.5 was published in 1976 to ensure th
12、at the quality of design and production was adequately controlled. This new edition incorporates Amendment 1 and Amendment 2 to BS AU 50-2.5:1976, and introduces technical changes as follows: in E.1 a maximum length of moment arm is specified; in E.3 the value for and the expression for R have been
13、changed; in G.3 an additional option for the tyre has been allowed for original equipment wheels. References to other standards have also been reviewed and, where possible, are now undated. This new edition does not, however, constitute a full revision of the standard. Tyre, wheel, rim and valve req
14、uirements are given in the following Parts and Sections of BS AU 50: Part 1: Tyres; Section 0: General; Section 1: Car tyres; Section 2: Commercial vehicle tyres; Section 3: Off-the-road tyres; Section 4: Agricultural tractor and machine tyres; Section 5: Industrial vehicle tyres; Section 6: Motorcy
15、cle tyres; Section 7: Moped tyres; Section 8: Code of practice for the storage of tyres, inner tubes and flaps; Part 2: Wheels and rims; Section 0: General (including terms and definitions, and construction and workmanship); Section 1: (Withdrawn); Section 2: Specification for dimensions of wheel na
16、ves and hub centres for commercial vehicles; Section 3: Specification for road-wheel nuts, studs and bolts for commercial vehicles; Section 5: Specification for road wheels manufactured wholly or partly of cast light alloy for passenger cars; Section 6: Specification for road wheels manufactured who
17、lly or partly of light alloy for mopeds and motor cycles; Section 7: Code of practice for the selection and care of tyres and wheels for commercial vehicles; Section 8: Code of practice for the selection and care of wheels for passenger cars (including caravans and light trailers); Part 3: Valves; S
18、ection 1: Specification for valve dimensions; Section 2: Tyre valve threads 5V1, 5V2, 6V1 and 8V1; Section 3: Tyre valve threads 9V1, 10V2, 12V1 and 13V1; Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 5
19、0-2.5c:1996 BSI 07-1999iii Section 4: Tyre valve threads 8V2, 10V1, 11V1, 13V2, 15V1, 16V1, 17V1, 17V2, 17V3, 19V1 and 20V1; Section 5: Dimensions for ISO core chamber No. 1 for tyre inflation valves; Section 6: Dimensions for ISO core chamber No. 2 for tyre inflation valves; Section 7: Code of prac
20、tice for the selection and care of tyre inflation valves for passenger cars (including caravans and light trailers); Section 8: Code of practice for the selection and care of tyre inflation valves for commercial vehicles; Part 4: Rim profiles and dimensions; Section 1: Car rims; Section 2: Commercia
21、l vehicle rims; Section 3: Off-the-road rims; Section 4: Agricultural tractor and machine rims; Section 5: Industrial vehicle rims; Section 6: Motorcycle rims; Section 7: Moped rims. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards
22、 are responsible for 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, pages i to iv, pages 1 to 12, an inside back cover and a back cover. This stand
23、ard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv bl
24、ank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-2.5c:1996 BSI 07-19991 5.1 Scope This Section of BS AU 50-2 specifies performance requirements and methods of test for wheels with any structural ele
25、ment of light alloy for use on all passenger cars and three-wheeled motorcycles having an unladen weight greater than 255 kg. NOTERequirements for light alloy wheels for use on three-wheeled motor cycles having an unladen weight less than 255 kg are given in BS AU 50-2.6. 5.2 References 5.2.1 Normat
26、ive references This Section of BS AU 50 incorporates, by dated or undated reference, provisions from other publications. These normative references are made at the appropriate places in the text and the cited publications are listed on the inside back cover. For dated references, only the edition ci
27、ted applies; any subsequent amendments to or revisions of the cited publication apply to this Section of BS AU 50 only when incorporated in the reference by amendment or revision. For undated references, the latest edition of the cited publication applies, together with any amendments. 5.2.2 Informa
28、tive references This Section of BS AU 50 refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back cover, but reference should be made to the latest editions. 5.3 Definitions For the p
29、urposes of this Section of BS AU 50 the definitions given in BS AU 50-1.0 and BS AU 50-2.0 apply, together with the following. See also Figure 2. 5.3.1 centre member (disc, spider or spoked) the connection between the vehicle hub and the wheel rim 5.3.2 nave central portion of centre member, where t
30、he wheel mounting face and fixing features are usually located 5.3.3 offset the distance between the mounting face of the nave and the centre-line of the rim (see Figure 1). The distance is termed positive (inset) when the mounting face is outboard of the rim centre-line and negative (outset) when i
31、nboard of the rim centre-line 5.3.4 wheel loading the mass supported by a wheel 5.3.5 specific application wheel a wheel designed to meet the specification determined by the vehicle manufacturer 5.3.6 general application wheel a wheel designed so that one basic casting may be used for wheels to be u
32、tilized for a variety of vehicles 5.3.7 radiological standard permanent radiographic record of the basic design of wheel showing the minimum acceptance standard as agreed between the founder and the wheel manufacturer 5.4 Materials The materials used to manufacture cast light alloy road wheels shall
33、 be such that the performance requirements of this standard are met, see Annex A. NOTEThe materials used should preferably conform to either BS 1490 or BS 2970, however in order to permit the development and application of alloys not included in the above standards, other light alloys may be used. C
34、ast light alloys, whether or not included in BS 1490 or BS 2970, shall have suitably specified chemical compositions, mechanical properties and other physical requirements which shall be defined and agreed between the founder and the wheel manufacturer with particular attention being given to the in
35、fluence of age hardening and stress corrosion. Whatever the light alloys used in the manufacture of road wheels conforming to this Section of BS AU 50, the inspection and quality control for cast aluminium and cast magnesium alloys shall conform to BS 1490 or BS 2970 respectively, including the addi
36、tional inspection and test procedures for analysis, together with optional procedures as agreed between the founder and the wheel manufacturer. NOTEIn the case of BS 2970:1989 this corresponds to the classification QC/TS (quality controlled to a test schedule). In the case of BS 1490:1988 this corre
37、sponds to supplementary test code A, with other test codes as agreed in the test schedule. Materials other than cast light alloys used to make parts of a composite wheel shall conform to the appropriate British Standards (see A.3). In making use of such materials, cognizance shall be taken of the co
38、mpatibility of dissimilar materials. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-2.5c:1996 2 BSI 07-1999 If suitable British Standard specifications are not available, the requirements for the mate
39、rials shall be specified and agreed between the founder and the wheel manufacturer. 5.5 Protection of magnesium alloy castings and finished wheels The protective treatment against corrosion shall be applied by the founder and/or the wheel manufacturer. All surfaces on magnesium wheels shall be fully
40、 protected. 5.6 Tests on completed wheels 5.6.1 Design approval To conform to the requirements of this Section of this standard, wheels shall first have the design validated by test samples, which shall demonstrate conformity to 5.6.4. Any change in detail design or alloy specification shall be foll
41、owed by revalidation. Revalidation shall also follow any change in the finishing system which results in changes in the residual surface stress condition. NOTEIn the case of wheels for general application, test specimens may be selected, using the procedure described in Annex B. 5.6.2 Conformity of
42、production For sampling rates, see Annex C. The minimum rate of testing should be in accordance with the recommendations given in C.1. The results of the tests shall be interpreted, and re-examined or retesting carried out, in accordance with the criteria specified in C.2. 5.6.3 Preparation of test
43、wheels Tests shall be carried out on fully-finished wheels representative of normal production except in those cases where permanent coatings have been applied which cannot be removed by simple chemical processes without damage to the wheels, this coating removal being necessary to permit penetrant-
44、dye crack detection to be carried out. In these exceptional cases it shall be permissible to test uncoated wheels, provided that the wheels have undergone the complete heat-stoving cycle applicable to the coating process. 5.6.4 Performance requirements 5.6.4.1 General All wheels manufactured to this
45、 standard shall conform to the following performance requirements. 5.6.4.2 Tyre fitting test Wheel rim profiles not conforming to the requirements of BS AU 50-4.1 shall conform to the criteria for acceptance specified in Annex D. 5.6.4.3 Dynamic cornering fatigue test (separate wheel) Wheels shall b
46、e subjected to the dynamic cornering fatigue test described in Annex E, and shall conform to the criteria for acceptance specified in E.4 and E.5. 5.6.4.4 Dynamic radial fatigue test (separate wheel) Wheels shall be subjected to the dynamic radial fatigue test described in Annex F, and shall conform
47、 to the criteria for acceptance specified in F.4 and F.5. 5.6.4.5 Impact test (separate wheel) Wheels shall be subjected to the impact test described in Annex G, and shall conform to the criteria for acceptance specified in G.7 and G.8. 5.6.4.6 Finishing systems Inboard parts of all wheels, the rim
48、area covered by the tyre, whether polished or not, and any other unpolished areas, shall be protected to conform to the requirements of Annex H. A finished wheel (not test panels) shall be used for the salt spray test specified in H.2.1. It shall be the responsibility of the wheel manufacturer and t
49、he retailer to include with the sale of polished wheels a warning of the effects of corrosion on the polished areas, and to make recommendations regarding protection. NOTEGuidance on some aspects of the design of wheel attachment systems is given in Annex J. 5.7 Documentation Chemical analysis certificates and/or hot metal suppliers analysis certificates, chemical analysis records, mechanical test records, heat treatment furnace charts, dimensional records and records of conformity