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QC/T 648-2015

Chinese Standard: 'QC/T 648-2015'
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Detail Information of QC/T 648-2015; QC/T648-2015
Description (Translated English): Performance requirements and bench test methods of automotive steering tie rod assy
Sector / Industry: Automobile & Vehicle Industry Standard (Recommended)
Classification of Chinese Standard: T23
Classification of International Standard: 43.040.50
Word Count Estimation: 14,117
Date of Issue: 2015-10-10
Date of Implementation: 2016-03-01
Older Standard (superseded by this standard): QC/T 304-1999; QC/T 648-2000; QC/T 650-2000
Drafting Organization: Somyke Auto Parts Co., Ltd
Administrative Organization: National Automotive Standardization Technical Committee
Regulation (derived from): PRC MIIT Announcement 2015 No.63

QC/T 648-2015
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.50
T 23
Replacing QC/T 304-1999, QC/T 648-2000, QC/T 650-2000
Performance requirements and bench
test methods of automotive steering tie rod assy
汽车转向拉杆总成性能要求及台架试验方法
ISSUED ON. OCTOBER 10, 2015
IMPLEMENTED ON. MARCH 01, 2016
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Appendix.
Number, name, and date of implementation of 13 automotive industry
standards
No. Standard number Standard name Number of standard replaced
Date of
implementation
649 QC/T 1014-2015 The starting motor commutator for automobile and motorcycle March 01, 2016
650 QC/T 1015-2015 Automotive air conditioner controller March 01, 2016
651 QC/T 501-2015 Automotive signal flasher QC/T 501-1999 March 01, 2016
652 QC/T 1016-2015 Door trim panel assembly for passenger cars March 01, 2016
653 QC/T 1017-2015 Headlamp cleaning nozzle assembly March 01, 2016
654 QC/T 1018-2015 Step plate for automotive March 01, 2016
655 QC/T 1019-2015
Performance requirements and
bench test methods of
automotive shift gears
March 01, 2016
656 QC/T 1020-2015
Test method for automotive
constant velocity cardan and
assemblies
March 01, 2016
657 QC/T 1021-2015
Performance requirements and
bench test methods of
automotive independent
suspension ball pin assembly
March 01, 2016
658 QC/T 648-2015
Performance requirements and
bench test methods of
automotive steering tie rod assy
QC/T 304-1999
QC/T 648-2000
QC/T 650-2000
March 01, 2016
659 QC/T 1022-2015
Technical specification for
reduction gearbox of battery
electric passenger cars
March 01, 2016
660 QC/T 1023-2015
General requirements for power
battery systems for electric
vehicles
March 01, 2016
661 QC/T 1024-2015 One-part polyurethane sealant for automobiles March 01, 2016
Table of contents
Foreword ... 5 
1 Scope ... 6 
2 Normative references ... 6 
3 Terms and definitions ... 6 
4 Performance requirements ... 7 
5 Test method ... 8 
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 replaces QC/T 304-1999 “Bench test methods of automotive
steering tie rod assy”, QC/T 648-2000 “Performance requirements and test of
automotive steering tie rod assy”, and QC/T 650-2000 “Performance
requirements and test methods of automotive steering tie rod ball pin”. As
compared with QC/T 304-1999, QC/T 648-2000, and QC/T 650-2000, the main
technical changes of this standard are as follows.
- INTEGRATE the performance, strength, and durability test methods and
performance requirements for the steering tie rod assembly and its
components;
- ADD and DETAIL some terms and definitions;
- ADD the environmental durability test of ball joint assembly;
- MODIFY the ball joint assembly clearance test;
- MODIFY the relevant test of the tie rod assembly;
- DELETE the bending fatigue test of the ball pin;
- ADD the static strength test of the ball pin.
This standard was proposed by AND shall be under the jurisdiction of the
National Automotive Standardization Technical Committee (SAC/TC 114).
The drafting organization of this standard. SOMIC Auto Parts Co., Ltd.
The participating drafting organizations of this standard. First Automobile
Group Technology Center, Shanghai ZF Chassis Technology Co., Ltd.,
Chongqing Kafu Automobile Brake Steering System Co.,
The main drafters of this standard. Shen Baiqing, Zhu Huiquan, Li Hong, Xi
Chuansen, Yang Kaiqu, Qi Jianliang, Shen Yongxiang, Pan Zhiqiang, Yu
Jinlong.
Performance requirements and bench
test methods of automotive steering tie rod assy
1 Scope
This standard specifies the performance requirements and bench test methods
of the steering tie rod assembly.
This standard applies to steering tie rod assembly for automotive use.
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 3730.2 Road vehicle – Masses – Vocabular and codes
GB/T 5179 Automotive steering systems – Terms and definitions
JIS Z 8901 Test powder and test particles
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Maximum oscillating angle
As shown in Figure 1, the ball pin is swung back and forth in the direction
specified by the product drawing so that the ball pin in the ball joint
assembly is moved from one extreme position to the other extreme position
through the center of the ball pin holder, AND the ball pin is at the included
angle between the two extreme positions.
When tested in accordance with 5.3, the rigidity of the ball joint assembly shall
comply with the requirements of the product drawing.
4.3 Ball joint assembly strength
When tested in accordance with 5.4, the strength of the ball joint assembly
shall comply with the requirements of the product drawing.
4.4 Ball pin static strength
When tested in accordance with 5.5, the static strength of the ball pin shall
comply with the requirements of the product drawing.
4.5 Ball joint assembly durability test
When tested in accordance with 5.6.1, after the product has been tested for 1
million times, the ball joint assembly shall be free from oil leakage, the parts
shall not have any crack or breakage, AND the basic performance of the ball
joint assembly after the durability test shall comply with the requirements of the
product drawing.
When tested in accordance with 5.6.2, after the specified durability test, the
product sample shall have penetrated sediment or water, the grease in the
sealed cavity shall be free from abnormality, AND the sealed dust cover shall
be free from damage or aging.
4.6 Tie rod assembly fatigue life
When tested in accordance with 5.7, after the product has been subjected to
the fatigue life test for over 1 million times, the tie rod assembly shall be free
from oil leakage, AND the parts shall not have any crack or breakage
5 Test method
5.1 Test equipment and conditions
5.1.1 The equipment used in the test shall comply with the requirements of the
relevant item test conditions AND shall not adversely affect the function of the
test sample. As for all the instruments used to record all parameters in the
performance test, the accuracy level shall be not less than level 0.5. As for the
instruments used to measure and indicate all parameters in the durability test,
the accuracy level shall be not less than level 1.5.
5.1.2 Unless otherwise specified, the ambient temperature of all tests shall be
5 °C ~ 35 °C.
h) Test frequency. 0.1 Hz ~ 1 Hz OR in accordance with the technical
requirements of the product drawing;
i) Number of tests. the number of oscillating cycles is more than 1 million
times;
j) Temperature conditions.
Room temperature. (20 ± 5) °C;
High and low temperature. according to product drawing requirements.
5.6.1.4 After the durability test, TEST the performance of the rotating torque,
oscillating torque, and assembly rigidity again in accordance with 5.2.2, 5.2.3,
and 5.3, and meanwhile DISASSEMBLE the ball joint holder to check the
degree of wear of the ball holder and the ball pin.
5.6.2 Muddy water environment durability test of ball joint assembly
5.6.2.1 As shown in Figure 16, INSTALL the ball joint assembly onto the test
device, at a direction same as the installation direction of the actual automobile
as far as possible; ADJUST the size and shape of the text fixture as well as the
roughness of the fitting end surface of the ball pint assembly dust cover to be
same as the actual automobile as far as possible. Meanwhile, when installing
the test fixture, it shall ensure that the muddy water is sprayed over the sealing
part of the dust cover OR the enclosure end of the ball pin holder.
5.6.2.2 PERFORM test in accordance with the test conditions as specified in
5.6.2.3. In the test process, it shall cool down the ball joint assembly, to ensure
that the surface temperature of the ball jo......
Related standard:   QC/T 647-2013  QC/T 649-2013
   
 
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