QC/T 818-2009 English PDF (QCT818-2009)

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QC/T 818-2009: Spoke-wheels of motorcycles and mopeds
QC/T 818-2009
QC
ICS 43.140
T 82
Automobile Industry Standard
of the People’s Republic of China
Spoke-wheels of motorcycles and mopeds
ISSUED ON. NOVEMBER 17, 2009
IMPLEMENTED ON. APRIL 1, 2010
Issued by. Ministry of Industry and Information Technology of the
People’s Republic of China
Ministry of Industry and Information Technology of
the People’s Republic of China
Announcement
G.K. [2009] No. 63
Ministry of Industry and Information Technology has approved 139 industrial
standards (such as “Snow blower vehicle”, etc.), including 29 standards for
automobile industry, 29 for pharmaceutical equipment industry, 4 for packaging
industry, and 77 for textile industry (standard No., name, main contents, and
implementation date are shown in Appendix 1). The Ministry of Industry and
Information Technology has approved and published the modification sheet for the
textile industry standard — FZ/T 73001-2008 “Hosiery” (refer to Appendix 2). The
modification sheet shall come into force since issuing date. Automobile industry
standards will come into force since April 1, 2010.
The above standards in the areas of automobile, pharmaceutical equipment, and
packaging industries are published by China Planning Press. Textile industry
standards are published by China Standardization Press.
Appendix. Numbers and Names of 29 Automobile Industry Standards
Ministry of Industry and Information Technology of
the People’s Republic of China
November 17, 2009
Table of Contents
Foreword ... 6 
1 Scope ... 7 
2 Normative references ... 7 
3 Terms and definitions ... 8 
4 Requirements ... 9 
5 Test methods ... 12 
6 Inspection rules ... 21 
7 Label, package, transportation, and storage ... 23 
Foreword
This Standard was proposed by National Technical Committee of Auto
Standardization.
This Standard shall be under the jurisdiction of National Technical Committee of Auto
Standardization.
Responsible drafting organizations of this Standard. Nanchang Motorcycle Quality
Supervision Inspection Institute, Jiangsu Yuantong Auto Components Co., Ltd., and
Asimco-ST (Sichuan) Components Co., Ltd.
Participating drafting organizations of this Standard. Yongkang Junjian Industrial Co.,
Ltd., and Shanghai Baiqiang Auto and Motorcycle Components Co., Ltd.
Main drafters of this Standard. Chen Jianfa, Ma Zhenxin, Liu Chengtong, Xu Kangjun,
and Wang Youfang.
Spoke-wheels of motorcycles and mopeds
1 Scope
This Standard specifies the terms and definition, requirements, test methods,
inspection rules, label, package, transportation, and storage of spoke-wheels of
motorcycles and mopeds.
This Standard is applicable to the spoke-wheels of motorcycles and mopeds
(hereinafter referred as wheel).
2 Normative references
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrections) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB/T 228 Metallic materials — Tensile testing at ambient temperature (GB/T
228-2002, ISO 6892.1998(E), EQV)
GB/T 1173 Casting aluminium alloys (GB/T 1173-1995, ASTM B26.1992, NEQ)
GB/T 2828.1 Sampling procedures for inspection by attributes — Part 1. Sampling
schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (GB/T
2828.1-2003, ISO 2859-1.1999, IDT)
GB/T 2933 Wheels/rims for pneumatic tyres — Nomenclature, designation and
marking (GB/T 2933-1995, ISO/DIS 3911. 1993, EQV)
GB/T 20975.1~GB/T 20975.24 Methods for chemical analysis of aluminium and
aluminium alloys
GB/T 7999 Optical emission spectrometric analysis method of aluminum and
aluminum alloys
GB/T 9438 Aluminium alloy castings (GB/T 9438-1999, ASTM B26/B26M.1992,
NEQ)
GB/T 13202 Series of motorcycle rims (GB/T 13202-2007, ISO 4249-3.2004, ISO
5995-2.1988, ISO 6054-2.1990, MOD)
GB/T 13822 Test specimens for non ferrous diecasting alloys
GB/T 15115 Die casting aluminum alloys
GB/T 22435-2008 Light-alloy wheels for motorcycles and mopeds
QC/T 725 Test method for calibrated diameter of motorcycles and mopeds rims
using sphere-string ruler
QC/T 726 Test method for calibrated diameter of motorcycles and mopeds rims
using even strap ruler
HG/T 2443 Test method of static loaded performance for tyres
3 Terms and definitions
The terms and definitions defined in GB/T 2933 AND the following terms and
definitions apply to this Standard.
3.1
Wheel hub
Part which is located between bearing and spoke of wheel. It usually has brake drum
or can be installed with brake plate and transmission mechanism.
3.2
Spoke
A kind of steel wire used to connect hub and rim.
3.3
Spoke nut
Nut used to fix spoke on rim.
3.4
Wire spoke-wheel
Rotating part located between tire and bearing, which is composed of rim, spoke,
spoke nut, and hub.
Figure 1 Measurement Position of Deformation of Back Wheel after Radial
Impact
4.7.2 Radial load fatigue performance. After test for more than 5×105 rotation in
accordance with 5.7.2, wheel shall be free of damage crack, breakage, and the
abnormal loosen of joint part. The radial and axial circle run-out of wheel after test
shall not be greater than 2.0mm.
4.7.3 Torsion fatigue performance. After test with more than 1×105 rotation in
accordance with 5.7.3, wheel shall be free of damage crack, breakage, and the
abnormal loosen of joint part. The radial and axial circle run-out of wheel after test
shall not be greater than 2.0mm.
4.7.4 Air tightness (only applicable to wheel without inner tire). CONDUCT test in
accordance with 5.7.4. The pressure of tire and rim shall be kept for at least 30s and
there shall have no air leakage.
5 Test methods
5.1 Measurement of the calibrated perimeter of and width of rim
5.1.1 Measurement method of the calibrated perimeter of rim
a) The diameter (perimeter) of WM-type column-type bead seat rim and
slopping-bottom-style (straight) bead seat rim shall be measured by using the
flat-tape used for the measurement of the calibrated diameter of rim in
accordance with the methods specified in QC/T 726.
b) The diameter (perimeter) of MT-type slopping-bottom-style bead seat rim,
DT-type open-style bead seat rim, and DC-type deep-groove-style bead seat
rim shall be measured by using the ball tape used for the measurement of the
calibrated diameter of rim in accordance with the methods specified in QC/T
725.
5.1.2 Measurement method of the width of rim. USE the vernier caliper to measure
the width.
5.2 Inspection of the materials used to forge hub
5.2.1 The internal quality of forged part shall be inspected in accordance with the test
methods specified in GB/T 9438.
5.2.2 The mechanical performance of materials is inspected in accordance with the
test methods specified in GB/T 228.
5.2.3 The chemical components of the materials of forged part shall be inspected in
Figure 7 Diagram of Radial Load Fatigue Test Machine
5.7.2.2 Test conditions.
a) Radial load.
Radial load Q is determined by formula (5).
Q = Sr × Fv ... (5)
Where.
Q — Radial load, N;
Sr — Intensified test coefficient, 2.25;
Fv — Refer to the definition in 5.7.1.2 c).
b) Tire pressure. the pressure of tire used in test is the pressure corresponding to
the maximum design load, kPa; deviation is ±10 kPa;
c) Radial load fluctuation tolerance. the load fluctuation tolerance during test is
±5%;
d) Tire breakdown. In case of tire breakdown, test shall be continued after tire is
replaced.
5.7.2.3 Test method. Tire shall be installed on the test machine in the same way as it
is installed on the vehicle (refer to Figure 7). Tire is inflated in accordance with the
method in 5.7.2.2 b). Then APPLY the radial load Q according to the calculated value
of Formula (5); at the same time, DRIVE the drum to rotate and then conduct test. All
the loads shall be on the connecting line between the center of wheel and the center
of drum.
5.7.2.4 CHECK cracks after test is done. For the inspection of cracks, ADOPT visual
inspection method, dye penetration method, penetration flaw detector, or X-ray fault
detector to inspect cracks.
5.7.3 Torsion fatigue test.
5.7.3.1 Test machine. Test machine shall be able to apply reciprocating torque
between hub and rim, as shown in Figure 8.
6.1.2 Exit-factory inspection shall be conducted in accordance with the double
sampling plan as specified in GB/T 2828.1. Acceptable quality level (AQL) is 4.0 and
inspection level (IL) is Class I.
6.1.3 The test items of exit-factory inspection are.
a) Dimension of rim;
b) General requirements on hub (except the tension to destroy hub spoke hole);
c) Tightening torque of spoke nut;
d) Assembly quality examined in accordance with Article 4.5;
e) Appearance quality;
f) Air tightness.
6.2 Type inspection
6.2.1 In case of...