QC/T 991-2015 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| QC/T 991-2015 | English | 150 |
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Passenger cars - Light alloy wheels - 90 impact test procedure
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QC/T 991-2015: Passenger cars - Light alloy wheels - 90 impact test procedure---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/QCT991-2015
QC
AUTOMOBILE INDUSTRY STANDARD
ICS 43.040.50
T 22
Passenger cars - Light alloy wheels -
90° impact test procedure
Issued on. APRIL 30, 2015
Implemented on. OCTOBER 01, 2015
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Announcement of Ministry of Industry and Information Technology of the
People's Republic of China... 3
Foreword... 7
1 Scope... 8
2 Normative references... 8
3 Terms and definitions... 8
4 Test samples... 8
5 Method I... 8
6 Method II... 13
Appendix A (Normative) Measurement method of rim deformation... 17
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009
Directives for standardization - Part 1.Structure and drafting of standards.
This standard was proposed by and shall be under the jurisdiction of the
National Automotive Standardization Technical Committee (SAC/TC 114).
Drafting organizations of this standard. CITIC Daika Co., Ltd., Zhejiang
Wanfeng Aowei Steam Turbine Co., Ltd.
The main drafters of this standard. Liu Chunhai, Li Shide, Yin Zhigao, Mao
Qiuxian.
Passenger cars - Light alloy wheels -
90° impact test procedure
1 Scope
This standard specifies two laboratory test methods, I and II, to assess the
strength and safety performance of the wheel when the wheel is subjected to
the impact perpendicular to the axis. It may select either of the two methods to
carry out test.
This standard applies to light alloy wheels of passenger cars.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 2933 Wheels and rims for pneumatic tires - Vocabulary, designation
and marking, (GB/T 2933-2009, ISO 3911.2004 IDT)
3 Terms and definitions
The terms and definitions as defined in GB/T 2933 apply to this standard.
4 Test samples
The representative new wheel which has undergone all processing steps, is
equipped with tires, is applicable to the vehicles.
5 Method I
5.1 Test equipment
Figure 1 shows a schematic diagram of a typical test equipment for Method I. It
consists mainly of a hammer that can move in the vertical direction and a wheel
& tire assembly mounting bracket. The main requirements are as follows.
5.2 Test methods
Figure 1 -- Schematic diagram of a typical test equipment
5.2.3.1 Install the wheel & tire assembly on the test machine. Ensure that the
size of the fixing device of the wheel on the test machine is appropriate to that
of the fixing device which is used on the vehicle. Adjust the axial position of the
wheel, so that the centerline of the tire’s section is aligned with the centerline of
the hammerhead (see Figure 1), then lock the axial adjustment mechanism.
Adjust the position of the wheel in the circumferential direction, so that the
impacted portion is directly under the hammerhead.
5.2.3.4 Release the hammer to carry out the impact.
5.2.3.5 Measure the deformation or cracking of the rim. The measurement
method of rim’s deformation is as shown in Appendix A.
5.3 Qualification criteria
The wheel shall, after being impacted, comply with the following requirements.
When E1 = 1.15 x Fr, there is no crack in the wheel, the inner rim’s deformation
shall be ≤ 2.5 mm;
6 Method II
6.1 Test equipment
Impact energy, J Falling height, mm Impact velocity, m/s Hammer’s weight, kg
Figure 2 shows a schematic diagram of a typical test equipment for Method II.
It is mainly composed of a hammer that can move in the vertical direction and
a wheel & tire assembly mounting bracket. The main requirements are as
follows.
6.2 Test methods
6.2.1 Test preparation.
The tires selected for the test shall be tires specified by the wheel or vehicle
manufacturer. If not specified, it is recommended to use the tubeless radial tires
6.2.3.2 Manually tighten the nut or bolt to the specified torque value, or use the
methods as recommended by the vehicle or wheel manufacturer to tighten it. If
there is no torque requirement, it is recommended to use the torque of (110 ±
10) N • m.
6.2.3.5 Check the deformation or crack of the rim. The measurement method
of rim deformation is as shown in Appendix A.
6.3 Qualification criteria
The wheel shall, after being impacted, comply with the following requirements.
Appendix A
(Normative)
Measurement method of rim deformation
QC/T 991-2015
QC
AUTOMOBILE INDUSTRY STANDARD
ICS 43.040.50
T 22
Passenger cars - Light alloy wheels -
90° impact test procedure
Issued on. APRIL 30, 2015
Implemented on. OCTOBER 01, 2015
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Announcement of Ministry of Industry and Information Technology of the
People's Republic of China... 3
Foreword... 7
1 Scope... 8
2 Normative references... 8
3 Terms and definitions... 8
4 Test samples... 8
5 Method I... 8
6 Method II... 13
Appendix A (Normative) Measurement method of rim deformation... 17
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009
Directives for standardization - Part 1.Structure and drafting of standards.
This standard was proposed by and shall be under the jurisdiction of the
National Automotive Standardization Technical Committee (SAC/TC 114).
Drafting organizations of this standard. CITIC Daika Co., Ltd., Zhejiang
Wanfeng Aowei Steam Turbine Co., Ltd.
The main drafters of this standard. Liu Chunhai, Li Shide, Yin Zhigao, Mao
Qiuxian.
Passenger cars - Light alloy wheels -
90° impact test procedure
1 Scope
This standard specifies two laboratory test methods, I and II, to assess the
strength and safety performance of the wheel when the wheel is subjected to
the impact perpendicular to the axis. It may select either of the two methods to
carry out test.
This standard applies to light alloy wheels of passenger cars.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 2933 Wheels and rims for pneumatic tires - Vocabulary, designation
and marking, (GB/T 2933-2009, ISO 3911.2004 IDT)
3 Terms and definitions
The terms and definitions as defined in GB/T 2933 apply to this standard.
4 Test samples
The representative new wheel which has undergone all processing steps, is
equipped with tires, is applicable to the vehicles.
5 Method I
5.1 Test equipment
Figure 1 shows a schematic diagram of a typical test equipment for Method I. It
consists mainly of a hammer that can move in the vertical direction and a wheel
& tire assembly mounting bracket. The main requirements are as follows.
5.2 Test methods
Figure 1 -- Schematic diagram of a typical test equipment
5.2.3.1 Install the wheel & tire assembly on the test machine. Ensure that the
size of the fixing device of the wheel on the test machine is appropriate to that
of the fixing device which is used on the vehicle. Adjust the axial position of the
wheel, so that the centerline of the tire’s section is aligned with the centerline of
the hammerhead (see Figure 1), then lock the axial adjustment mechanism.
Adjust the position of the wheel in the circumferential direction, so that the
impacted portion is directly under the hammerhead.
5.2.3.4 Release the hammer to carry out the impact.
5.2.3.5 Measure the deformation or cracking of the rim. The measurement
method of rim’s deformation is as shown in Appendix A.
5.3 Qualification criteria
The wheel shall, after being impacted, comply with the following requirements.
When E1 = 1.15 x Fr, there is no crack in the wheel, the inner rim’s deformation
shall be ≤ 2.5 mm;
6 Method II
6.1 Test equipment
Impact energy, J Falling height, mm Impact velocity, m/s Hammer’s weight, kg
Figure 2 shows a schematic diagram of a typical test equipment for Method II.
It is mainly composed of a hammer that can move in the vertical direction and
a wheel & tire assembly mounting bracket. The main requirements are as
follows.
6.2 Test methods
6.2.1 Test preparation.
The tires selected for the test shall be tires specified by the wheel or vehicle
manufacturer. If not specified, it is recommended to use the tubeless radial tires
6.2.3.2 Manually tighten the nut or bolt to the specified torque value, or use the
methods as recommended by the vehicle or wheel manufacturer to tighten it. If
there is no torque requirement, it is recommended to use the torque of (110 ±
10) N • m.
6.2.3.5 Check the deformation or crack of the rim. The measurement method
of rim deformation is as shown in Appendix A.
6.3 Qualification criteria
The wheel shall, after being impacted, comply with the following requirements.
Appendix A
(Normative)
Measurement method of rim deformation
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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